Commit Graph

2159 Commits

Author SHA1 Message Date
Ruben Ortlam e722ee1bf5 vulkan: fix fp16 Flash Attention on Windows AMD RDNA2 and below (llama/19921) 2026-02-27 20:57:58 +02:00
Kevin Pouget f877e1b202 ggml-virtgpu: improve the reliability of the code (llama/19846)
* ggml-virtgpu-backend: validate the consistency of the received objects

This patch adds consistency checks in the
ggml-virtgpu-backend (running on the host side) to ensure that the
data received from the guest is consistent (valid pointers, valid
sizes and offsets).

* ggml-virtgpu-backend: add fallback/skips for optional ggml backend methods

```
  1. bck->iface.synchronize(bck)
  2. buft->iface.get_alloc_size(buft, op)
  3. buft->iface.get_max_size(buft)
```

these three methods are optional in the GGML interface. `get_max_size`
was already properly defaulted, but `backend sychronize` and `butf
get_max_size` would have segfaulted the backend if not implemented.

* ggml-virtgpu-backend: fix log format missing argument

* ggml-virtgpu-backend: improve the abort message

* ggml-virtgpu-backend: more safety checks

* ggml-virtgpu-backend: new error code

* ggml-virtgpu-backend: initialize all the error codes

* ggml-virtgpu: add a missing comment generated by the code generator

* ggml-virtgpu: add the '[virtgpu]' prefix to the device/buffer names

* ggml-virtgpu: apir_device_buffer_from_ptr: improve the error message

* ggml-virtgpu: shared: make it match the latest api_remoting.h of Virglrenderer APIR

(still unmerged)

* ggml-virtgpu: update the code generator to have dispatch_command_name in a host/guest shared file

* ggml-virtgpu: REMOTE_CALL: fail if the backend returns an error

* docs/backend/VirtGPU.md: indicate that the RAM+VRAM size is limed to 64 GB with libkrun

* ggml-virtgpu: turn off clang-format header ordering for some of the files

Compilation breaks when ordered alphabetically.

* ggml-virtgpu: clang-format

* ggml-virtgpu/backend/shared/api_remoting: better comments for the APIR return codes
2026-02-27 20:57:58 +02:00
Neo Zhang 4cac408c60 support permuted, remove check s0/s10 (llama/19889)
Co-authored-by: Neo Zhang Jianyu <jianyu.zhang@intel.com>
2026-02-27 20:57:58 +02:00
Jeff Bolz fb55b2654b vulkan: check for memory overlap before doing fusion (llama/19768)
* vulkan: check for memory overlap before doing fusion

* Update ggml/src/ggml-vulkan/ggml-vulkan.cpp

* address feedback
2026-02-27 20:57:58 +02:00
Georgi Gerganov 279be33a83 ggml/gguf : prevent integer overflows (llama/19856)
* gguf : prevent integer overflow for ggml_context mem size

* ggml : fix int overflows in ggml_new_object()

* gguf : prevent string exhaustion

* gguf : prevent array elements exhaustion

* ggml : fix negative tensor type oob

* py : assert that alignment is non-zero power of 2

* ggml : check int overflow in ggml_new_tensor_impl and ggml_new_object

* gguf-py : error on duplicate keys when reading

* py : restore tensor_fields

* enforce proper alignment in add_custom_alignment

* gguf : better name

* gguf : fix ctx size for no_alloc == true

* gguf : minor print fix

* ggml : print values when overflow

* ggml : remove deprecated ggml_type_sizef()

* ggml : relax ggml_type asserts to debug-only

* gguf : add mem_size overflow test

* gguf : add file size check for arrays

* ggml : relax asseerts for ggml_get_type_traits()

* flake8 fix

---------

Co-authored-by: Sigbjørn Skjæret <sigbjorn.skjaeret@scala.com>
2026-02-27 20:57:58 +02:00
Ruben Ortlam 90800b5aa5 Vulkan Scalar Flash Attention Refactor (llama/19625)
* vulkan: allow using fp16 in scalar flash attention shader

* split rows inside of subgroups for faster synchronization

* use row_split when Br >= 4, change reductions to use shared memory if row_split == 1

* use f32 scalar FA if f16 is not supported by device

* fix amd workgroup size issue

* optimize masksh use

* add medium rows FA shader Br size

* fixes

* add padding to mask shmem buffer

* cache q values into registers for KQ

* fuse lf accumulation, pf and v accumulation into a loop

* stage K loads through shmem

* stage V loads through shmem

* only stage through shmem on Nvidia

* default to Bc 32

* also stage V through shmem when this is done for K

* dynamic subgroups for intel

* use vectorized stores

* use float_type for dequantize4 functions

* use smaller scalar rows size for smaller rows count

* relax flash attention split_k condition to allow non-gqa use

* use minimal subgroup size on Intel

* fix shmem support function

* fix rebase issues

* fixes

* Bc 4 for scalar FA is not a valid configuration

* Use wave32 on AMD RDNA for scalar FA

* add Intel shader core count lookup-table

* fix regressions

* device tuning

* tmpsh size fix

* fix editorconfig

* refactor fa tuning logic into a single place

* fix gqa opt logic

* fix block_rows with small n_rows

* amd tuning

* fix hsk=72/80 issue

* tuning

* allow condition skipping for column check

* use float16 for Of if available

* address feedback

* fix bad RDNA performance on head size <= 128 by limiting occupancy

* allow printing pipeline stats

* cleanup and fixes

* limit occupancy for GCN for small batch FA with large HSK

* disable f16 FA for GCN AMD GPUs on the proprietary driver
2026-02-27 20:57:58 +02:00
Jeff Bolz dcc877688d vulkan: fix coopmat1 without bf16 support (llama/19793) 2026-02-27 20:57:58 +02:00
Jeff Bolz 344eae3d22 vulkan: fix data race in mul_mat_id shader (llama/19790) 2026-02-27 20:57:58 +02:00
Max Krasnyansky 53b571a47e hexagon refactor all Ops to use local context struct (llama/19819)
* hexagon: refactor set/get/sum-rows ops to use local context

* hexagon: refactor ROPE and Softmax Ops to use local context

Improves performance a bit by precomputing things and saving in the context.

* hexagon: refactor activation ops to use local context struct

* hexagon: refactor unary ops to use local context struct and DMA/VTCM

* hexagon: use aligned hvx_scale function

* hexagon: remove unused fields from op_context

* hexagon: rewrite ROPE to use DMA and VTCM scratchpad

* hex-rope: keep N rows in scratchpad (instead of just two)

* hex-rope: introduce rowidx cache

* hex-rope: remove unused fields

* hex-rope: rewrite dma prefetch logic to allow for multi-row fetch/compute

also removes the need for fastdiv.

* hex-rope: minor formatting

* hex-rope: use indices and unroll the loops

* hex-rope: more updates to cleanup rope-block handling

* hexagon: cleanup supported type/dims checks

* hexagon: all reduce funcs replicated across lanes

There is no need to explicitly replicate the first value.

* snapdragon: update adb and windows scripts to use ubatch-size 256

Updated Ops support handles larger ubatches.
2026-02-27 20:57:58 +02:00
Alberto Cabrera Pérez 06fbd9c5f2 ggml-cpu: arm64: q5_K repack gemm and gemv (and generic) implementations (dotprod) (llama/19356)
* Generic GEMV and boilerplate for q5_K dotprod
* Generic GEMM and boilerplate for q5_K dotprod
* ARM64 q5_K dotprod GEMM
* ARM64 q5_K dotprod GEMV
2026-02-27 20:57:58 +02:00
Gaurav Garg 98915f889a Improve CUDA graph capture (llama/19754)
* Improve CUDA graph capture

Currently, CUDA graphs are eagerly enabled on the first call to ggml_backend_cuda_graph_compute. If the graph properties keep changing (4+ consecutive updates), the graph is permanently disabled. This is suboptimal because:

- The first call always incurs CUDA graph capture overhead even if the graph is unstable
- Once permanently disabled, CUDA graphs never re-enable even after the graph stabilizes (e.g., switching from prompt processing to decode)

The new approach delays CUDA graph activation until warmup completes: the same cgraph must be called at least twice with matching properties before CUDA graph capture begins. This avoids wasted capture overhead on volatile graphs and allows graphs to become eligible once they stabilize.
This also fixes issues such as https://github.com/ggml-org/llama.cpp/discussions/19708

* Update ggml/src/ggml-cuda/ggml-cuda.cu

Co-authored-by: Johannes Gäßler <johannesg@5d6.de>

* Remove EM dashes

* Update ggml/src/ggml-cuda/ggml-cuda.cu

Co-authored-by: Aman Gupta <amangupta052@gmail.com>

---------

Co-authored-by: Johannes Gäßler <johannesg@5d6.de>
Co-authored-by: Aman Gupta <amangupta052@gmail.com>
2026-02-27 20:57:58 +02:00
Taimur Ahmad 0c10a15447 ggml-cpu: add RVV vec dot kernels for quantization types (llama/18784)
* ggml-cpu: add rvv vec_dot for iq2_s

Co-authored-by: Rehan Qasim <rehan.qasim@10xengineers.ai>

* ggml-cpu: add rvv vec_dot for iq3_s

Co-authored-by: Rehan Qasim <rehan.qasim@10xengineers.ai>

* ggml-cpu: add rvv vec_dot for tq1_0, tq2_0

Co-authored-by: Rehan Qasim <rehan.qasim@10xengineers.ai>

ggml-cpu: add rvv vec_dot for tq1_0, tq2_0

* ggml-cpu: add rvv vec_dot for iq1_s, iq1_m

Co-authored-by: Rehan Qasim <rehan.qasim@10xengineers.ai>

* ggml-cpu: add vlen switch for rvv vec_dot

---------

Co-authored-by: Rehan Qasim <rehan.qasim@10xengineers.ai>
2026-02-27 20:57:58 +02:00
Masashi Yoshimura 0158795ebc ggml-webgpu: Add unary op (SQR, SQRT, SIN, COS) support. (llama/19700)
* ggml-webgpu: Add unary op (SQR, SQRT, SIN, COS) support.

* Fix to cast the src value to f32 before sin/cos computing.
2026-02-27 20:57:58 +02:00
Ruben Ortlam 3f68f30907 vulkan: fix MMQ shader push constants and multi-dispatch (llama/19732) 2026-02-27 20:57:58 +02:00
Johannes Gäßler ade724fced CUDA: fix kernel selection logic for tile FA (llama/19686)
* CUDA: fix kernel selection logic for tile FA

* add comment
2026-02-27 20:57:58 +02:00
shalinib-ibm cc9e5cf89d llamafile: powerpc: add FP16 MMA path for Q4/Q8 matmul (llama/19709)
Avoid xvi8ger4pp signed→unsigned bias correction by dequantizing Q4/Q8
inputs to FP16 and using FP16×FP16→FP32 MMA. This removes
post-processing overhead and improves performance.

Performance Impact:
1.5 ~ 2x improvement in PP_Speed for Q4 and Q8 Models,
measured with llama-bench and llama-batched-bench.
Q8 Model: granite-4.0-h-micro-Q8_0.gguf (from huggingface)
Q4 Model: Meta-Llama3-8b Q4 model (generated with llama-quantize from
f32 model)

llama-bench Q8 Model Results:
 model                          	       size 	     params 	 backend    	 threads 	            test 	Base t/s	Patch t/s
 granitehybrid 3B Q8_0          	   3.16 GiB 	     3.19 B 	 CPU        	      10 	             pp8 	         64.48 ± 4.72 	         73.99 ± 0.27
 granitehybrid 3B Q8_0          	   3.16 GiB 	     3.19 B 	 CPU        	      10 	            pp16 	         80.11 ± 0.32 	        112.53 ± 0.40
 granitehybrid 3B Q8_0          	   3.16 GiB 	     3.19 B 	 CPU        	      10 	            pp32 	         89.10 ± 0.27 	        152.95 ± 0.68
 granitehybrid 3B Q8_0          	   3.16 GiB 	     3.19 B 	 CPU        	      10 	            pp64 	         93.65 ± 0.25 	        187.83 ± 0.83
 granitehybrid 3B Q8_0          	   3.16 GiB 	     3.19 B 	 CPU        	      10 	           pp128 	         99.93 ± 0.02 	        201.32 ± 0.11
 granitehybrid 3B Q8_0          	   3.16 GiB 	     3.19 B 	 CPU        	      10 	           pp256 	        102.32 ± 0.40 	        208.32 ± 0.41
 granitehybrid 3B Q8_0          	   3.16 GiB 	     3.19 B 	 CPU        	      10 	           pp512 	        103.42 ± 0.40 	        209.98 ± 0.14
 granitehybrid 3B Q8_0          	   3.16 GiB 	     3.19 B 	 CPU        	      10 	           tg128 	         20.35 ± 0.01 	         19.57 ± 0.01

llama-bench Q4 Model Results:
 model                          	       size 	     params 	 backend    	 threads 	            test 	              Base    t/s 	               Patch   t/s
 llama 8B Q4_0                  	   4.33 GiB 	     8.03 B 	 CPU        	      10 	             pp8 	         34.77 ± 0.10 	         41.23 ± 0.08
 llama 8B Q4_0                  	   4.33 GiB 	     8.03 B 	 CPU        	      10 	            pp16 	         40.81 ± 0.04 	         64.55 ± 0.15
 llama 8B Q4_0                  	   4.33 GiB 	     8.03 B 	 CPU        	      10 	            pp32 	         44.65 ± 0.05 	         90.84 ± 0.22
 llama 8B Q4_0                  	   4.33 GiB 	     8.03 B 	 CPU        	      10 	            pp64 	         47.49 ± 0.03 	        114.39 ± 0.11
 llama 8B Q4_0                  	   4.33 GiB 	     8.03 B 	 CPU        	      10 	           pp128 	         49.29 ± 0.24 	        120.13 ± 0.19
 llama 8B Q4_0                  	   4.33 GiB 	     8.03 B 	 CPU        	      10 	           pp256 	         49.77 ± 0.23 	        121.51 ± 0.11
 llama 8B Q4_0                  	   4.33 GiB 	     8.03 B 	 CPU        	      10 	           pp512 	         49.89 ± 0.23 	        117.52 ± 0.10
 llama 8B Q4_0                  	   4.33 GiB 	     8.03 B 	 CPU        	      10 	           tg128 	         13.40 ± 0.01 	         13.37 ± 0.00

Llama perplexity Results:

Model	                    Base Final PPL Estimate	Patch Final PPL Estimate
granite-4.0-h-micro-Q8_0    1.3862 +/- 0.04424	        1.3868 +/- 0.04432
Meta-Llama3-8b Q4	    1.3801 +/- 0.04116	        1.3803 +/- 0.04116

Signed-off-by: Shalini.Salomi.Bodapati <Shalini.Salomi.Bodapati@ibm.com>
2026-02-27 20:57:58 +02:00
Reese Levine 8b3a52ba87 ggml webgpu: Fix bug in dispatching large matrix-vector multiplication (llama/19535)
* Fix bug in dispatching large matrix-vector multiplication
2026-02-27 20:57:58 +02:00
Reese Levine fc7a78f4d8 ggml webgpu: shader library organization (llama/19530)
* Basic JIT compilation for mul_mat, get_rows, and scale (ggml/17)

* scale jit working

* preliminary working jit for getrows and mulmat, needs refining

* simplified mul_mat preprocessing switch statement

* get_rows fixes, mul_mat refinement

* formatted + last edits

* removed some extraneous prints

* fixed get_rows, fixed workgroup dispatch in mul_mat. no gibberish

* small fix

* some changes, working

* get_rows and mul_mat jit fixed and working

* Update formatting

* formatting

* Add header

---------

Co-authored-by: Neha Abbas <nehaabbas@ReeseLevines-MacBook-Pro.local>
Co-authored-by: Reese Levine <reeselevine1@gmail.com>

* Start work on all-encompassing shader library

* refactor argmax, set_rows

* Refactor all but flashattention, mat mul

* flashattention and matrix multiplication moved to new format

* clean up preprocessing

* Formatting

* remove duplicate constants

* Split large shaders into multiple static strings

---------

Co-authored-by: neha-ha <137219201+neha-ha@users.noreply.github.com>
2026-02-27 20:57:58 +02:00
Jeff Bolz f1da0a26f5 vulkan: split mul_mat into multiple dispatches to avoid overflow (llama/19509)
* vulkan: split mul_mat into multiple dispatches to avoid overflow

The batch dimensions can be greater than the max workgroup count limit,
in which case we need to split into multiple dispatches and pass the base
index through a push constant.

Fall back for the less common p021 and nc variants.

* address feedback
2026-02-27 20:57:58 +02:00
shaofeiqi 51ce7de94c opencl: refactor expm1 and softplus (llama/19404)
* opencl: refactor expm1

* opencl: refactor softplus

* opencl: use h for half literals

---------

Co-authored-by: Li He <lih@qti.qualcomm.com>
2026-02-27 20:57:58 +02:00
shaofeiqi 6fadc749a9 opencl: optimize mean and sum_row kernels (llama/19614)
* opencl: optimize mean and sum_row kernels

* opencl: add comment for max subgroups

* opencl: format

---------

Co-authored-by: Li He <lih@qti.qualcomm.com>
2026-02-27 20:57:58 +02:00
Talha Can Havadar 58855d08c2 ggml: ggml-cpu: force-no-lto-for-cpu-feats (llama/19609)
When LTO enabled in build environments it forces all builds to have LTO
in place. But feature detection logic is fragile, and causing Illegal
instruction errors with lto. This disables LTO for the feature
detection code to prevent cross-module optimization from inlining
architecture-specific instructions into the score function. Without this,
LTO can cause SIGILL when loading backends on older CPUs (e.g., loading
power10 backend on power9 crashes before feature check runs).
2026-02-27 20:57:58 +02:00
Georgi Gerganov cf4bd07028 cuda : enable CUDA graphs for MMID 1 <= BS <= 4 (llama/19645)
* cuda : enable CUDA graphs for MMID BS <= 4

* cont : add stream capture check

Co-authored-by: Oliver Simons <osimons@nvidia.com>

* cont : add MMVQ_MMID_MAX_BATCH_SIZE

---------

Co-authored-by: Oliver Simons <osimons@nvidia.com>
2026-02-27 20:57:58 +02:00
Judd 5ee5748722 ggml : make `ggml_is_view` as API (llama/19539)
* make `ggml_is_view` as API

* introduce `ggml_aux_is_view` as inline version for internal use.

* change `ggml_aux_is_view` to  `ggml_impl_is_view`
2026-02-27 20:57:58 +02:00
Mario Limonciello 5d9d72ec12 Adjust workaround for ROCWMMA_FATTN/GFX9 to only newer ROCm veresions (llama/19591)
Avoids issues with ROCm 6.4.4.

Closes: https://github.com/ggml-org/llama.cpp/issues/19580
Fixes: 6845f7f87 ("Add a workaround for compilation with ROCWMMA_FATTN and gfx9 (#19461)")

Signed-off-by: Mario Limonciello (AMD) <superm1@kernel.org>
2026-02-27 20:57:58 +02:00
abhijain1204fujitsu f8f7c1d891 ggml: aarch64: Implement SVE in Gemm q4_k 8x8 q8_k Kernel (llama/19132)
* Updated repack.cpp

* Updated repack.cpp

* Updated repack.cpp

* Added if condition to support only vector length 256.

* Changed the format removed comments and duplicate variable

* If SVE 256 not present then was using generic function to compute, hence slowing the performance.

So added code if SVE 256 is not present then use NEON code.

* Code format change suggestion

---------

Co-authored-by: Vithule, Prashant <Prashant.Vithule@fujitsu.com>
2026-02-27 20:57:58 +02:00
David Friehs 02a9f660b8 cuda: optimize iq2xxs/iq2xs/iq3xxs dequantization (llama/19624)
* cuda: optimize iq2xxs/iq2xs/iq3xxs dequantization

- load all 8 int8 for a grid position in one load
- calculate signs via popcnt instead of fetching from ksigns table
- broadcast signs to drop individual shift/mask

* cuda: iq2xxs: simplify sum scaling

express `(sum * scale + sum / 2) / 4` as `(sum * (scale * 2 + 1)) / 8`
express `((aux32 >> 28) * 2 + 1)` as `(aux32 >> 27 | 1)`

saves 3 registers for mul_mat_vec_q (152 -> 149) according to nsight
AFAICT no overflow can occur here as iq2xxs values are far too small

* uint -> uint32_t

error: identifier "uint" is undefined
2026-02-27 20:57:58 +02:00
Daniel Bevenius df2f8d3bc4 cmake : check if KleidiAI API has been fetched (llama/19640)
This commit addresses a build issue with the KleidiAI backend when
building multiple cpu backends. Commmit
3a00c98584e42a20675b6569d81beadb282b0952 ("cmake : fix KleidiAI install
target failure with EXCLUDE_FROM_ALL") introduced a change where
FetchContent_Populate is called instead of FetchContent_MakeAvailable,
where the latter does handle this case (it is idempotent but
FetchContent_Populate is not).

I missed this during my review and I should not have commited without
verifying the CI failure, sorry about that.
2026-02-27 20:57:58 +02:00
Georgi Gerganov 22f0861efc ggml : avoid UB in gemm ukernel (llama/19642) 2026-02-27 20:57:58 +02:00
Aaron Teo 7b5a1ebaa6 ggml-cpu: optimize ggml_vec_dot_bf16 for s390x (llama/19399) 2026-02-27 20:57:58 +02:00
Aman Gupta 76f769d06f ggml-cpu: FA add GEMM microkernel (llama/19422)
* ggml-cpu: FA add GEMM microkernel

* add guard for sizeless vector types

* fix case where DV % GGML_F32_EPR !=0

* move memset out of the loop

* move another memset out of the loop

* use RM=4 for arm

* simd_gemm: convert everything to int

* convert everything to size_t to avoid warnings

* fixup

* add pragma for ignoring aggressive loop optimizations
2026-02-27 20:57:58 +02:00
SamareshSingh 7ee772ab2b cmake : fix KleidiAI install target failure with EXCLUDE_FROM_ALL (llama/19581)
* cmake: fix KleidiAI install target failure with EXCLUDE_FROM_ALL

Fix for the bug #19501 by adding EXCLUDE_FROM_ALL to FetchContent_Declare. This properly excludes KleidiAI from both build and install targets, preventing install failures when GGML_CPU_KLEIDIAI=ON is used.

The KleidiAI source files are still compiled into libggml-cpu.so, preserving all functionality.

* addressed code review comments
2026-02-27 20:57:58 +02:00
Georgi Gerganov 4bea3cd329 ggml : bump version to 0.9.7 (ggml/1425) 2026-02-27 20:57:58 +02:00
Georgi Gerganov 4ac70ce791 models : optimize qwen3next graph (llama/19375)
* models : optimizing qwen3next graph

* cont

* wip

* wip

* wip

* wip

* wip

* wip

* wip

* wip

* wip

* wip

* cont : remove redundant q, g chunking

* minor

* minor

* avoid passing masks around

* avoid concats during chunking

* naming + shapes

* update names and use prefix to disable CUDA graphs
2026-02-15 21:44:37 +02:00
Adrien Gallouët 226e8c041c ggml : fix GGML_DEBUG with OpenMP (llama/19599)
last_graph is only available without OpenMP, but
ggml_graph_compute_thread() is called in both cases.

Signed-off-by: Adrien Gallouët <angt@huggingface.co>
2026-02-15 21:44:37 +02:00
Georgi Gerganov fbdac5119c metal : fix ACC op (llama/19427) 2026-02-15 21:44:37 +02:00
Jeff Bolz cc448def01 vulkan: support L2_NORM with contiguous rows (llama/19604) 2026-02-15 21:44:37 +02:00
Jeff Bolz 197e9ab6eb vulkan: support GGML_OP_SET (llama/19584) 2026-02-15 21:44:37 +02:00
Sophon fc6bbab817 vulkan: Add vendor id for Qualcomm drivers (llama/19569)
This commit allows Qualcomm native vulkan driver to be used on Windows
instead of Mesa Dozen.
2026-02-15 21:44:37 +02:00
Max Krasnyansky e6476d4c12 hexagon: further optimizations and refactoring for flash attention (llama/19583)
* ggml-hexagon: fa improvements

ggml-hexagon: optimize flash attention calculations with improved variable handling

ggml-hexagon: streamline flash attention operations by removing redundant checks for FP32

ggml-hexagon: optimize hvx_dot_f16_f16_aa_rx2 by simplifying variable handling for unused elements

ggml-hexagon: optimize flash attention by changing slope vector type to F16

* hexfa: fixed test-backend-ops failurs due to leftover element handling

* hexagon: refactor and optimize fa to use local context struct

* ggml-hexagon: optimize flash-attention using hvx_vec_expf

Use HVX for online softmax.

---------

Co-authored-by: chraac <chraac@gmail.com>
2026-02-15 21:44:37 +02:00
Jeff Bolz ec57bf407c vulkan: restore -inf check in FA shaders (llama/19582) 2026-02-15 21:44:37 +02:00
Alberto Cabrera Pérez e8a25654b2 Fix wrong memcpy length for block_interleave == 4 (llama/19575) 2026-02-15 21:44:37 +02:00
ymcki 628b545b7e fix vulkan ggml_acc only works in 3d but not 4d (llama/19426)
* fix vulkan ggml_acc only works in 3d but not 4d

* removed clamp in test_acc_block

* use the correct stride and its test case

* cuda : fix "supports op" condition

* change src0 to src1 in ggml_vk_acc. Update acc.comp with jeffbolznv\'s suggestion except to keep the boundary check

* version without boundary check

* revert back to boundary check version

---------

Co-authored-by: Georgi Gerganov <ggerganov@gmail.com>
2026-02-15 21:44:37 +02:00
Aman Gupta 58e3d5a42d CUDA: loop over ne2*ne3 in case it overflows (llama/19538)
* CUDA: loop over ne2*ne3 in case it overflows

* use fastdiv
2026-02-15 21:44:37 +02:00
Oliver Simons 3eb4905af1 CUDA: Do not mutate cgraph for fused ADDs (llama/19566)
* Do not mutate cgraph for fused ADDs

1. We should try to minimize in-place changes to the incoming
   ggml_cgraph where possible (those should happen in graph_optimize)
2. Modifying in-place leads to an additional, unnecessary graph capture
   step as we store the properties before modifying the graph in-place
   in the cuda-backend

* Assert ggml_tensor is trivially copyable

* Update ggml/src/ggml-cuda/ggml-cuda.cu

Co-authored-by: Aman Gupta <amangupta052@gmail.com>

---------

Co-authored-by: Aman Gupta <amangupta052@gmail.com>
2026-02-15 21:44:37 +02:00
Georgi Gerganov 0e94faa19c metal : improve concurrency (llama/19555) 2026-02-15 21:44:37 +02:00
Georgi Gerganov c5325e50fc metal : support GGML_OP_SET (llama/19548) 2026-02-15 21:44:37 +02:00
Shupei Fan 195af60a8b hexagon: fix typo in vtcm_needs_release (llama/19545) 2026-02-15 21:44:37 +02:00
lhez 9f87eeccdf opencl: add basic support for q4_1 (llama/19534)
* opencl: add q4_1 mv

* opencl: clean up

* opencl: add flattened q4_1 mv

* opencl: clean up

* opencl: add basic q4_1 mm

* opencl: fix whitespace

* opencl: add general q4_0 mm
2026-02-15 21:44:37 +02:00
Georgi Gerganov d8e3e2ef08 metal : update sum_rows kernel to support float4 (llama/19524) 2026-02-15 21:44:37 +02:00
Mario Limonciello 39b5f414a3 Add a workaround for compilation with ROCWMMA_FATTN and gfx9 (llama/19461)
There is an upstream problem [1] with AMD's LLVM 22 fork and
rocWMMA 2.2.0 causing compilation issues on devices without
native fp16 support (CDNA devices).

The specialized types aren't resolved properly:
```
/opt/rocm/include/rocwmma/internal/mfma_impl.hpp:2549:37: error: ambiguous partial specializations of 'amdgcn_mfma<__half, __half, __half, 16, 16, 16>'
 2549 |             using ARegsT = typename Impl::ARegsT;
```

Add a workaround to explicitly declare the types and cast when
compiling with HIP and ROCWMMA_FATTN [2].  When this is actually
fixed upstream some guards can be used to detect and wrap the
version that has the fix to only apply when necessary.

Link: https://github.com/ROCm/rocm-libraries/issues/4398 [1]
Link: https://github.com/ggml-org/llama.cpp/issues/19269 [2]

Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
2026-02-15 21:44:37 +02:00
Max Krasnyansky 304205679c hexagon: further optimization and tuning of matmul and dot kernels (llama/19407)
* ggml-hexagon: implement 2x2 matmul kernel

* hexmm: implement vec_dot_rx2x2 for Q8_0 and MXFP4

* hexagon: fix editor config failures

* hexagon: refactor matmul ops to use context struct and remove wrappers

Also implement vec_dot_f16 2x2

* hexagon: refactor dyn quantizers to use mmctx

* hexagon: remove mm fastdiv from op_ctx

* hexagon: refactor matmul entry point to reduce code duplication

---------

Co-authored-by: Trivikram Reddy <tamarnat@qti.qualcomm.com>
2026-02-15 21:44:37 +02:00
lhez 0326fd37dd opencl: add general Q6_K mm and Q4_K mv (llama/19347)
* opencl: add general q6_k mm

* opencl: refine condition for q6_K mm

* opencl: add general q4_K mv

* opencl: fix whitespace
2026-02-15 21:44:37 +02:00
Georgi Gerganov f3e78985be ggml : unary ops support non-cont src0 + metal F16 unary ops (llama/19511)
* ggml : unary ops support non-cont src0

* metal : support F16 unary ops + fix ELU
2026-02-15 21:44:37 +02:00
Georgi Gerganov 3ffa1fd84e metal : extend l2_norm support for non-cont src0 (llama/19502) 2026-02-15 21:44:37 +02:00
Max Krasnyansky 09587ceb12 hexagon: Add ARGSORT, DIV, SQR, SQRT, SUM_ROWS, GEGLU (llama/19406)
* hexagon: add ARGSORT op

Co-authored-by: Yarden Tal <yardent@qti.qualcomm.com>

* hexagon: argsort reject tensors with huge rows for now

* Adding support for DIV,SQR,SQRT,SUM_ROWS ops in hexagon backend

* hexagon : Add GEGLU op

* hexagon: fix editor config check

* hexagon: rewrite and optimize binary ops ADD/SUB/MUL/DIV/ADD_ID to use DMA

---------

Co-authored-by: Yarden Tal <yardent@qti.qualcomm.com>
Co-authored-by: Manohara Hosakoppa Krishnamurthy <mhosakop@qti.qualcomm.com>
2026-02-15 21:44:37 +02:00
Georgi Gerganov 3504358056 ggml : extend bin bcast for permuted src1 (llama/19484)
* tests : extend bin bcast for permuted src1

* cont : extend bin support

* cont : s0 is always 1

* tests : simplify
2026-02-15 21:44:37 +02:00
Georgi Gerganov de949fb1db metal : consolidate unary ops (llama/19490) 2026-02-15 21:44:37 +02:00
Oliver Simons 57c620b4b1 CUDA : Update CCCL-tag for 3.2 to final release from RC (llama/19486)
CCCL 3.2 has been released since it was added to llama.cpp as part of
the backend-sampling PR, and it makes sense to update from RC to final
released version.

https://github.com/NVIDIA/cccl/releases/tag/v3.2.0
2026-02-15 21:44:37 +02:00
Nikhil Jain 562255fd77 Plug memory leaks and free resources on shutdown (llama/19315)
* Fix memory leaks in shader lib, backend, backend_context, buffer_context, and webgpu_buf_pool

* Free pools

* Cleanup

* More cleanup

* Run clang-format

* Fix arg-parser and tokenizer test errors that free an unallocated buffer

* Fix device lost callback to not print on device teardown

* Fix include and run clang-format

* remove unused unused

* Update binary ops

---------

Co-authored-by: Reese Levine <reeselevine1@gmail.com>
2026-02-15 21:44:37 +02:00
Alberto Cabrera Pérez d77265c818 ggml-cpu: arm64: q6_K repack gemm and gemv (and generic) implementations (dotprod) (llama/19360)
* First working version of GEMM and GEMV

* interleave loads and compute

* Clang-format

* Added missing fallback. Removed tested TODO.

* Swap M and N to be consistent with the repack template convention
2026-02-15 21:44:37 +02:00
k4ss4n b0fe2e84fa ggml : use noexcept overload for is_regular_file in backend registration (llama/19452)
using noexcept std::filesystem::directory_entry::is_regular_file
overload prevents abnormal termination upon throwing an error
(as caused by symlinks to non-existent folders on linux)

Resolves: #18560
2026-02-15 21:44:37 +02:00
Raul Torres 2de2fc9270 CANN: Remove unnecessary wrapper for `gml_backend_buft_is_cann` (llama/18968) 2026-02-15 21:44:37 +02:00
hipudding 6a74f56212 CANN: implement quantized MUL_MAT_ID for MoE models (llama/19228)
Implement ggml_cann_mul_mat_id_quant function to support quantized matrix
multiplication for Mixture of Experts (MoE) architectures on CANN backend.

Key features:
- Support Q4_0 and Q8_0 quantized weight formats
- Use IndexSelect to dynamically route expert-specific weights based on indices
- Leverage WeightQuantBatchMatmulV2 for efficient quantized computation
- Handle automatic F16 type conversion for hardware compatibility
- Support both per-expert and broadcast input modes

Implementation details:
- Extract expert weights and scales using CANN IndexSelect operation
- Process each batch and expert combination independently
- Create proper tensor views with correct stride for matmul operations
- Automatic input/output type casting to/from F16 as needed

Testing: All test cases passed for supported types (F32, F16, Q4_0, Q8_0).
2026-02-15 21:44:37 +02:00
Georgi Gerganov a36210c836 cuda : extend GGML_OP_PAD to work with non-cont src0 (llama/19429)
* cuda : extend GGML_OP_PAD to work with non-cont src0

* tests : add permuted pad
2026-02-15 21:44:37 +02:00
Oliver Simons 808904277e CUDA: Fix non-contig rope (llama/19338)
* Rename variables + fix rope_neox

Seems memory layout is shared with Vulkan so we can port fix from
https://github.com/ggml-org/llama.cpp/pull/19299

* Fix rope_multi

* Fix rope_vision

* Fix rope_norm

* Rename ne* to ne0* for consistent variable naming

* cont : consistent stride names

---------

Co-authored-by: Georgi Gerganov <ggerganov@gmail.com>
2026-02-15 21:44:37 +02:00
Georgi Gerganov 55d7cb2e93 metal : consolidate bin kernels (llama/19390)
* metal : refactor bin kernels

* cont

* cont : fix cv
2026-02-08 09:29:10 +02:00
Georgi Gerganov a9a0a51fba metal : fix event synchronization in cpy_tensor_async (llama/19402) 2026-02-08 09:29:10 +02:00
Abhijit Ramesh 1739af663a ggml-webgpu: JIT compile binary operators and handle binding overlaps (llama/19310)
* ggml webgpu: port binary operators to use pre-wgsl

* Add binary.wgsl: unified shader with conditionals for all 4 ops

* Add gen_binary_shaders.cpp: build tool for using pre_wgsl preprocessor

* Remove bin_op.tmpl.wgsl and binary.wgsl (Python template)

* Update CMake to generate binary operator shaders at build time

* ggml-webgpu: migrate binary ops to JIT compilation with overlap handling

* port binary operators from AOT to pre-wgsl JIT compilation

* add src1=dst overlap handling for binary ops

* use compile-time workgroup size defines instead of runtime overrides

* ggml-webgpu: complete overlap handling for binary ops

* add support for inplace & overlap case in binding setup

* restructure conditional logic to handle all overlap cases

* ensure all buffer bindings are correctly assigned for edge cases

* ggml-webgpu: remove unused binary overlap cases

Remove src0==src1 binary overlap case that never occurs in practice.

* keep INPLACE (src0==dst), OVERLAP (src1==dst), DEFAULT

* remove unused src0==src1 and all-same variant

* refactor wgsl to eliminate duplication
2026-02-08 09:29:10 +02:00
Nechama Krashinski f2f7320817 sycl: add F16 support for GGML_OP_CEIL (llama/19306)
* Fix SYCL CEIL operator

* sycl: implement GGML_OP_CEIL
2026-02-08 09:29:10 +02:00
Jeff Bolz cea22b3075 vulkan: For coopmat2 FA, use fp16 accumulators for the final result (llama/19376)
The cpu and cuda backends use fp16 for the VKQ accumulator type, this change
does the same for vulkan. This helps particularly with large head sizes which
are very register-limited.

I tried this for the coopmat1 path and it slowed down a bit. I didn't try for
scalar.

I applied the softmax bias that the cuda backend uses to avoid overflow,
although I was not able to reproduce the original bug without it.
2026-02-08 09:29:10 +02:00
Jeff Bolz c1b63354bb vulkan: make FA mask/softcap enables spec constants (llama/19309)
* vulkan: make FA mask/softcap enables spec constants

* don't specialize for sinks

* bump timeout a little bit
2026-02-08 09:29:10 +02:00
Georgi Gerganov 776cf61857 metal : skip loading all-zero mask (llama/19337)
* metal : skip loading all-zero mask

* cont : minor
2026-02-08 09:29:10 +02:00
Georgi Gerganov 2a7d5490f1 cuda : cuda graphs now compare all node params (llama/19383) 2026-02-08 09:29:10 +02:00
Georgi Gerganov 34d332aca5 metal : adaptive CPU/GPU interleave based on number of nodes (llama/19369) 2026-02-08 09:29:10 +02:00
Jeff Bolz a567c140a3 vulkan: Preprocess FA mask to detect all-neg-inf and all-zero. (llama/19281)
Write out a 2-bit code per block and avoid loading the mask when it
matches these two common cases.

Apply this optimization when the mask is relatively large (i.e. prompt
processing).
2026-02-08 09:29:10 +02:00
Georgi Gerganov 0781df2518 metal : add diag (llama/19330) 2026-02-08 09:29:10 +02:00
Oleksandr Kuvshynov 932def3198 vulkan: fix GPU deduplication logic. (llama/19222)
* vulkan: fix GPU deduplication logic.

As reported in https://github.com/ggml-org/llama.cpp/issues/19221, the
(same uuid, same driver) logic is problematic for windows+intel igpu.

Let's just avoid filtering for MoltenVK which is apple-specific, and
keep the logic the  same as before 88d23ad5 - just dedup based on UUID.

Verified that MacOS + 4xVega still reports 4 GPUs with this version.

* vulkan: only skip dedup when both drivers are moltenVk
2026-02-08 09:29:10 +02:00
Jeff Bolz 5a786f7648 vulkan: Set k_load_shmem to false when K is too large (llama/19301) 2026-02-08 09:29:10 +02:00
Jeff Bolz e0a3f393ad vulkan: fix non-contig rope (llama/19299) 2026-02-08 09:29:10 +02:00
will-lms eecc9bfa69 metal : add missing includes (llama/19348) 2026-02-08 09:29:10 +02:00
Kevin Pouget 2763054f99 ggml-virtgpu: make the code thread safe (llama/19204)
* ggml-virtgpu: regenerate_remoting.py: add the ability to deprecate a function

* ggml-virtgpu: deprecate buffer_type is_host remoting

not necessary

* ggml-virtgpu: stop using static vars as cache

The static init isn't thread safe.

* ggml-virtgpu: protect the use of the shared memory to transfer data

* ggml-virtgpu: make the remote calls thread-safe

* ggml-virtgpu: backend: don't continue if couldn't allocate the tensor memory

* ggml-virtgpu: add a cleanup function for consistency

* ggml-virtgpu: backend: don't crash if buft->iface.get_max_size is missing

* fix style and ordering

* Remove the static variable in apir_device_get_count

* ggml-virtgpu: improve the logging

* fix review minor formatting changes
2026-02-08 09:29:10 +02:00
Aman Gupta 4685ec9555 ggml-cpu: use LUT for converting e8->f32 scales on x86 (llama/19288)
* ggml-cpu: use LUT for converting e8->f32 scales on x86

* add dispatch based on macro
2026-02-08 09:29:10 +02:00
Georgi Gerganov 5dda94dd2e metal : add solve_tri (llama/19302) 2026-02-08 09:29:10 +02:00
Ruben Ortlam aa34558b6f vulkan: disable coopmat1 fa on Nvidia Turing (llama/19290) 2026-02-08 09:29:10 +02:00
Aman Gupta 8eede801e3 CUDA: use mmvq for mul-mat-id for small batch sizes (llama/18958)
* CUDA: use mmvq for mul-mat-id for small batch sizes

* add mmvq too

* Fix perf issue on ampere. Use mmvf mm-id only for non-nvidia GPUs

* templatize multi_token_path
2026-02-08 09:29:10 +02:00
Georgi Gerganov ce8a2da620 metal : minor cleanup (llama/19251) 2026-02-08 09:29:10 +02:00
Oliver Simons 698265d754 CUDA: Fix loop unrolling for BW in mul_mat_q_stream_k_fixup (llama/19053)
By providing stride_* variables as size_t (i.e., 64-bit) the compiler can
correctly unroll the [two for-loops](557515be1e/ggml/src/ggml-cuda/mmq.cuh (L3789-L3816))
on BW. This gives some perf for prefill/pp phase on BW, while not affecting
other SMs:

| GPU                                                     | Model                 | Test   |   t/s master |   t/s osimons/fix_bw_mmq_fixup_kernel |   Speedup |
|:--------------------------------------------------------|:----------------------|:-------|-------------:|--------------------------------------:|----------:|
| NVIDIA RTX 6000 Ada Generation                          | gpt-oss 20B MXFP4 MoE | pp8096 |      8404.05 |                               8375.79 |      1.00 |
| NVIDIA RTX 6000 Ada Generation                          | llama 3B Q4_K_M       | pp8096 |     16148.93 |                              16019.60 |      0.99 |
| NVIDIA RTX 6000 Ada Generation                          | llama 8B Q4_0         | pp8096 |      8008.29 |                               7978.80 |      1.00 |
| NVIDIA RTX 6000 Ada Generation                          | nemotron_h 9B BF16    | pp8096 |      4263.16 |                               4248.53 |      1.00 |
| NVIDIA RTX 6000 Ada Generation                          | nemotron_h 9B Q4_K_M  | pp8096 |      5165.11 |                               5157.43 |      1.00 |
| NVIDIA RTX PRO 6000 Blackwell Max-Q Workstation Edition | gpt-oss 20B MXFP4 MoE | pp8096 |     12582.80 |                              12758.37 |      1.01 |
| NVIDIA RTX PRO 6000 Blackwell Max-Q Workstation Edition | llama 3B Q4_K_M       | pp8096 |     16879.10 |                              17619.47 |      1.04 |
| NVIDIA RTX PRO 6000 Blackwell Max-Q Workstation Edition | llama 8B Q4_0         | pp8096 |     10649.90 |                              10982.65 |      1.03 |
| NVIDIA RTX PRO 6000 Blackwell Max-Q Workstation Edition | nemotron_h 9B BF16    | pp8096 |      7717.73 |                               7716.22 |      1.00 |
| NVIDIA RTX PRO 6000 Blackwell Max-Q Workstation Edition | nemotron_h 9B Q4_K_M  | pp8096 |      7301.90 |                               7370.38 |      1.01 |
2026-02-08 09:29:10 +02:00
George 57107b2bf8 ggml: added cleanups in ggml_quantize_free (llama/19278)
Add missing cleanup calls for IQ2_S, IQ1_M quantization types and IQ3XS with 512 blocks during quantization cleanup.
2026-02-08 09:29:10 +02:00
Gaurav Garg 6ec362d2e0 cuda : revert CUDA_SCALE_LAUNCH_QUEUES override until investigated (llama/19227)
Hangs were reported on Jetson Orin AGX if we set CUDA_SCALE_LAUNCH_QUEUES=4x. Reverting the previous PR (#19042) and updating the document to consider setting CUDA_SCALE_LAUNCH_QUEUES=4x for faster throughput on multi-GPU systems.
2026-02-08 09:29:10 +02:00
lhez 591072fcc8 opencl: refactor some ops, concat, repeat, tanh and scale (llama/19226)
* opencl: refactor concat

* opencl: refactor repeat

* opencl: refactor tanh

* opencl: enable fp16 for tanh

* opencl: refactor scale

* opencl: fix unused variables
2026-02-08 09:29:10 +02:00
Aman Gupta 871063016d ggml-cpu: FA split across kv for faster TG (llama/19209)
* ggml-cpu: split across kv for faster TG

* simplify sinks application

* add ref impl
2026-02-08 09:29:10 +02:00
Neo Zhang c4003da2b8 Remove support for Nvidia & AMD GPU, because the oneAPI plugin for Nvidia & AMD GPU is unavailable: download/installation channels are out of work. (llama/19246)
User can't build up the software for Nvidia & AMD GPU.
rm the oneMath since it is only used in NV and AMD code path.
2026-02-08 09:29:10 +02:00
Tamar 74353e90a1 sycl: implement GGML_OP_TOP_K (llama/19242) 2026-02-08 09:29:10 +02:00
Georgi Gerganov 73e04555eb metal : support virtual devices (llama/18919)
* metal : support virtual devices

* cont : manage buffer type context memory

* metal : add events

* cont : implement cpy_tensor_async
2026-02-08 09:29:10 +02:00
Johannes Gäßler 625c8d863e ggml-backend: fix async set/get fallback sync (llama/19179) 2026-02-08 09:29:10 +02:00
Christian Kastner 0e219ebf89 docs : Minor cleanups (llama/19252)
* Update old URLs to github.com/ggml-org/

* Bump copyrights
2026-02-08 09:29:10 +02:00
Nikhil Jain a0256b8159 Remove pipeline cache mutexes (llama/19195)
* Remove mutex for pipeline caches, since they are now per-thread.

* Add comment

* Run clang-format

* Cleanup

* Run CI again

* Run CI once more

* Run clang-format
2026-02-08 09:29:10 +02:00
Max Krasnyansky aca5953d8d Bump cmake max version (needed for Windows on Snapdragon builds) (llama/19188)
* Bump max cmake version (needed for Windows on Snapdragon builds)

* cmake: move max version setting into ggml/CMakeLists
2026-02-08 09:29:10 +02:00
nullname 9b927dd849 ggml-hexagon: flash-attention and reduce-sum optimizations (llama/19141)
* wip

* ggml-hexagon: add vectorized dot product function for FP32 and FP16 accumulation

* ggml-hexagon: optimize dot product functions for FP16 and FP32 with new vectorized implementations

* wip

* ggml-hexagon: optimize hvx_vec_dump_f32_n and hvx_vec_reduce_sum_qf32x2 functions for improved performance

* ggml-hexagon: refactor dot product functions to use a common loading function for improved readability

* optimize vector dot product functions to use unified reduction for improved performance

* wip

* ggml-hexagon: add vectorized dot product function for FP32 and FP16 accumulation

* ggml-hexagon: optimize dot product functions for FP16 and FP32 with new vectorized implementations

* wip

* ggml-hexagon: optimize hvx_vec_dump_f32_n and hvx_vec_reduce_sum_qf32x2 functions for improved performance

* ggml-hexagon: refactor dot product functions to use a common loading function for improved readability

* optimize vector dot product functions to use unified reduction for improved performance

* hexagon: optimize reduce-sum for v75+

* hexagon: always keep row_sums in sf/fp32

* ggml-hexagon: enhance directory checks for HEXAGON_SDK_ROOT and HEXAGON_TOOLS_ROOT

* fix compiling error after rebase

---------

Co-authored-by: Max Krasnyansky <maxk@qti.qualcomm.com>
2026-02-08 09:29:10 +02:00
shaofeiqi db9c88744d opencl: add optimized q8_0 mm kernel for adreno (llama/18871)
* Add Q8_0 OpenCL kernel

Co-authored-by: yunjie <yunjie@qti.qualcomm.com>

* opencl: fix build for non-adreno

* opencl: refactor q8_0

* opencl: enforce subgroup size of 64 for adreno for q8_0

* For A750 and older generations, subgroup size can be 64 or 128.
  This kernel assumes subgroup size 64.

* opencl: suppress warning when adreno kernels are disabled

---------

Co-authored-by: yunjie <yunjie@qti.qualcomm.com>
Co-authored-by: Li He <lih@qti.qualcomm.com>
2026-02-08 09:29:10 +02:00
Simon Redman efd6344939 Correctly fetch q8_1 quantize pipeline in test as needed by 8a3519b (llama/19194) 2026-02-08 09:29:10 +02:00
Georgi Gerganov 06e3750407 ggml : bump version to 0.9.6 (ggml/1423) 2026-02-08 09:29:10 +02:00
Georgi Gerganov fc1a3e579e cmake : remove unused file (ggml/1419) 2026-02-08 09:29:10 +02:00
Georgi Gerganov acbace0571 cuda : fix compile warnings (#0) 2026-01-30 15:56:40 +02:00
bssrdf 5dca0db99c add tensor type checking as part of cuda graph properties (llama/19186) 2026-01-30 15:56:40 +02:00
s8322 2a16e7a67f sycl: implement GGML_UNARY_OP_SOFTPLUS (llama/19114)
* sycl: add softplus unary op implementation

* sycl: add softplus unary op implementation

* docs(ops): mark SYCL SOFTPLUS as supported

* docs: update SYCL status for SOFTPLUS
2026-01-30 15:56:40 +02:00
RachelMantel 1b3c27efae sycl: implement GGML_OP_TRI (llama/19089)
* sycl: implement GGML_OP_TRI

* docs: update ops.md for SYCL TRI

* docs: regenerate ops.md

* docs: update SYCL support for GGML_OP_TRI
2026-01-30 15:56:40 +02:00
Zheyuan Chen 829e70044b ggml-webgpu: improve flastAttention performance by software pipelining (llama/19151)
* webgpu : pipeline flash_attn Q/K loads in WGSL

* ggml-webgpu: unroll Q*K accumlation inner loop

* ggml-webgpu: vectorization

* ggml-webgpu: unrolling

* ggml-webgpu: remove redundant unrolling

* ggml-webgpu: restore the config

* ggml-webgpu: remove redundant comments

* ggml-webgpu: formatting

* ggml-webgpu: formatting and remove vectorization

* ggml-webgpu: remove unnecessary constants

* ggml-webgpu: change QKV buffer to read_write to pass validation

* ggml-webgpu: add explanation for the additional bracket around Q K accumulate

* Indentation and for -> if for tail

* Kick off CI on wgsl only commits

---------

Co-authored-by: Reese Levine <reeselevine1@gmail.com>
2026-01-30 15:56:40 +02:00
Todor Boinovski 2a89a3f35c hexagon: enable offloading to Hexagon on Windows on Snapdragon (llama/19150)
* hexagon: updates to enable offloading to HTP on WoS

* Update windows.md

* Update windows.md

* hexagon: enable -O3 optimizations

* hexagon: move all _WINDOWS conditional compilation to _WIN32

* hexagon: updates to enable offloading to HTP on WoS

* hexagon: use run-time vs load-time dynamic linking for cdsp driver interface

* refactor htp-drv

* hexagon: add run-bench.ps1 script

* hexagon: htdrv refactor

* hexagon: unify Android and Windows build readmes

* hexagon: update README.md

* hexagon: refactor htpdrv

* hexagon: drv refactor

* hexagon: more drv refactor

* hexagon: fixes for android builds

* hexagon: factor out dl into ggml-backend-dl

* hexagon: add run-tool.ps1 script

* hexagon: merge htp-utils in htp-drv and remove unused code

* wos: no need for getopt_custom.h

* wos: add missing CR in htpdrv

* hexagon: ndev enforecement applies only to the Android devices

* hexagon: add support for generating and signing .cat file

* hexagon: add .inf file

* hexagon: working auto-signing and improved windows builds

* hexagon: futher improve skel build

* hexagon: add rough WoS guide

* hexagon: updated windows guide

* hexagon: improve cmake handling of certs and logging

* hexagon: improve windows setup/build doc

* hexagon: more windows readme updates

* hexagon: windows readme updates

* hexagon: windows readme updates

* hexagon: windows readme updates

* hexagon: windows readme updates

* Update windows.md

* Update windows.md

* snapdragon: rename docs/backend/hexagon to docs/backends/snapdragon

Also added a power shell script to simplify build env setup.

* hexagon: remove trailing whitespace and move cmake requirement to user-presets

* hexagon: fix CMakeUserPresets path in workflow yaml

* hexagon: introduce local version of libdl.h

* hexagon: fix src1 reuse logic

gpt-oss needs a bigger lookahead window.
The check for src[1] itself being quantized was wrong.

---------

Co-authored-by: Max Krasnyansky <maxk@qti.qualcomm.com>
2026-01-30 15:56:40 +02:00
Georgi Gerganov b997e690ef cuda : fix nkvo, offload and cuda graph node properties matching (llama/19165)
* cuda : fix nkvo

* cont : more robust cuda graph node property matching

* cont : restore pre-leafs implementation

* cont : comments + static_assert
2026-01-30 15:56:40 +02:00
yulo 34a3e28a08 HIP: add mmf for CDNA (llama/18896)
* refactor mmf rows_per_block

* speed up compile

* pass cdna compile

* fix cuda error

* clean up mmf

* f32 mmf

* clean float mma

* fix mmf error

* faster mmf

* extend tile k

* fix compile error

* Revert "extend tile k"

This reverts commit 4d2ef3d483932659801a59a5af0b6b48f6ffd5c7.

* fix smem overflow

* speed up compiling mmf

* speed up compile for hip

* 512 block for cdna

* config pad size

* fix as comment

* update select logic

* move some code to cuh

* fix as comment

* correct cdna3 config

---------

Co-authored-by: zhang hui <you@example.com>
2026-01-30 15:56:40 +02:00
Vishal Singh e0a2182970 ggml-zendnn : resolve ZenDNN backend cross-module symbol dependency (llama/19159) 2026-01-30 15:56:40 +02:00
Aman Gupta 62ba8b537f CUDA: refactor topk-moe to enable more models (GLM 4.7, Nemotron etc.) (llama/19126) 2026-01-30 15:56:40 +02:00
Neo Zhang f0e85bb142 sycl: fix norm kernels: l2_norm, group_norm, rms_norm by remove assert to support more cases (llama/19154)
Co-authored-by: Neo Zhang Jianyu <jianyu.zhang@intel.com>
2026-01-30 15:56:40 +02:00
Ruben Ortlam 33148bb523 Vulkan Flash Attention Coopmat1 Refactor (llama/19075)
* vulkan: use coopmat for flash attention p*v matrix multiplication

* fix P loading issue

* fix barrier position

* remove reduction that is no longer needed

* move max thread reduction into loop

* remove osh padding

* add bounds checks and padding

* remove unused code

* fix shmem sizes, loop duration and accesses

* don't overwrite Qf, add new shared psh buffer instead

* add missing bounds checks

* use subgroup reductions

* optimize

* move bounds check, reduce barriers

* support other Bc values and other subgroup sizes

* remove D_split

* replace Of register array with shared memory Ofsh array

* parallelize HSV across the rowgroups

* go back to Of in registers, not shmem

* vectorize sfsh

* don't store entire K tile in shmem

* fixes

* load large k tiles to shmem on Nvidia

* adapt shared memory host check function to shader changes

* remove Bc 32 case

* remove unused variable

* fix missing mask reduction tmspsh barrier

* fix mask bounds check

* fix rowmax f16 under/overflow to inf

* fix flash_attn_cm2 BLOCK_SIZE preprocessor directives
2026-01-30 15:56:40 +02:00
Patryk Kaminski cc0c103b5d ggml-sycl: remove unused syclcompat header (llama/19140)
The syclcompat/math.hpp is not used anymore. The change that intrduced it was successfuly reverted (https://github.com/ggml-org/llama.cpp/pull/17826).
This include path will become obsolete and dropped in oneAPI 2026.0 effectively breaking ggml-sycl builds.
2026-01-30 15:56:40 +02:00
Oleksandr Kuvshynov dda7d9cd1c vulkan: handle device dedup on MacOS + Vega II Duo cards (llama/19058)
Deduplication here relied on the fact that vulkan would return unique
UUID for different physical GPUs. It is at the moment not always the case.
On Mac Pro 2019 running Mac OS, with 2 Vega II Duo cards (so, 4 GPU total),
MotlenVK would assign same UUID to pairs of GPUs, unless they
are connected with Infinity Fabric.

See more details here: KhronosGroup/MoltenVK#2683.

The right way is to fix that in MoltenVK, but until it is fixed,
llama.cpp would only recognize 2 of 4 GPUs in such configuration.

The deduplication logic here is changed to only filter GPUs if UUID is
same but driver is different.
2026-01-30 15:56:40 +02:00
Kevin Pouget 531d7b6781 ggml: new backend for Virglrenderer API Remoting acceleration (v2) (llama/18718) 2026-01-30 15:56:40 +02:00
Alberto Cabrera Pérez 3701413a71 ggml-cpu: arm64: Q4_K scale unroll and vectorization (llama/19108) 2026-01-30 15:56:40 +02:00
Georgi Gerganov 7fb0f823de cuda : fix "V is K view" check for non-unified KV cache (llama/19145) 2026-01-30 15:56:40 +02:00
Georgi Gerganov f28a733025 CUDA: tune GLM 4.7 Flash FA kernel selection logic (DGX Spark) (llama/19142) 2026-01-30 15:56:40 +02:00
Nikhil Jain dfdd2fee83 ggml webgpu: Split shared state (webgpu_context) into global state and per-thread state (llama/18976)
* Squashed commit of the following:

commit b3c6bf4b0450d8d452b934df27a0fb7cb53cd755
Author: Abhijit Ramesh <abhijitramesh2k@gmail.com>
Date:   Mon Dec 1 18:29:00 2025 -0800

    ggml webgpu: fix xielu parameter passing (llama/11)

    The XIELU operation was incorrectly using static_cast to convert
    float parameters to uint32_t, which converted numeric values instead
    of preserving IEEE 754 bit patterns. This caused incorrect values
    to be interpreted by the GPU shader.

    * Use reinterpret_cast to preserve float bit patterns when passing
      through uint32_t params buffer
    * Update WGSL shader parameter types from u32 to f32
    * Re-enable XIELU support (was disabled due to numerical issues)

    Fixes NMSE test failures for XIELU operation on WebGPU backend.

commit 5ca9b5e49ea7cddc9ab7c8b43a11a9c76a4dff4a
Author: neha-ha <137219201+neha-ha@users.noreply.github.com>
Date:   Tue Nov 18 12:17:00 2025 -0800

    Refactored pipelines and workgroup calculations (llama/10)

    * refactored pipelines

    * refactored workgroup calculation

    * removed commented out block of prior maps

    * Clean up ceiling division pattern

    ---------

    Co-authored-by: Neha Abbas <nehaabbas@eduroam-169-233-141-223.ucsc.edu>
    Co-authored-by: Reese Levine <reeselevine1@gmail.com>

Author: James Contini <jamescontini@gmail.com>
Date:   Wed Oct 29 23:13:06 2025 -0700

    formatted embed wgsl and ggml-webgpu.cpp

commit e1f6baea31645e5d96ad53664acae856f74b96f4
Author: James Contini <jamescontini@gmail.com>
Date:   Wed Oct 29 23:08:37 2025 -0700

    implemented REPL_Template support and removed bug in unary operators kernel

commit 8c70b8fece445cdc9a8c660dbddbf201e52da2bb
Author: James Contini <jamescontini@gmail.com>
Date:   Wed Oct 15 16:14:20 2025 -0700

    responded and dealt with PR comments

commit f9282c660c10dec4487d434549bdb707a9cd9f37
Author: James Contini <jamescontini@gmail.com>
Date:   Sun Oct 12 13:41:41 2025 -0700

    removed unnecesarry checking if node->src[1] exists for unary operators

commit 4cf28d7dec41c29186d66152735b244c5699f9dc
Author: James Contini <jamescontini@gmail.com>
Date:   Sun Oct 12 13:32:45 2025 -0700

    All operators (inlcluding xielu) working

commit 74c6add1761a59d2c2ff60b60e8ad3c8300f6d3e
Author: James Contini <jamescontini@gmail.com>
Date:   Fri Oct 10 13:16:48 2025 -0700

    fixed autoconfig

commit 362749910be4f0120c8ffb21ceddeb7d2c088e51
Author: James Contini <jamescontini@gmail.com>
Date:   Fri Oct 10 13:10:46 2025 -0700

    removed vestigial files

commit cb0858333785757804c5104e59c4981843207c16
Author: James Contini <jamescontini@gmail.com>
Date:   Fri Oct 10 12:59:32 2025 -0700

    abides by editor-config

commit 5360e2852a4b51197d7d67d0a5d42e908b02d7ed
Author: James Contini <jamescontini@gmail.com>
Date:   Fri Oct 10 12:45:57 2025 -0700

    rms_norm double declaration bug atoned

commit 7b09baa4aa53711be5a126043670cc182c78bfcd
Merge: 8a6ec843 74b8fc17
Author: James Contini <jamescontini@gmail.com>
Date:   Fri Oct 10 11:50:03 2025 -0700

    resolving merge conflicts

commit 8a6ec843a50ab82f8cef59b4558eb63f318ba02d
Author: James Contini <jamescontini@gmail.com>
Date:   Wed Oct 8 18:06:47 2025 -0700

    unary operators pass ggml tests

commit c3ae38278a2db236adc5912c9140e4f0d63f2c19
Author: James Contini <jamescontini@gmail.com>
Date:   Wed Oct 1 16:22:40 2025 -0700

    neg passes backend test

commit aa1c9b2f8877a405470ca56709c42a1fd43713de
Author: James Contini <jamescontini@gmail.com>
Date:   Tue Sep 30 23:55:27 2025 -0700

    neg f16xf32xip builds and runs, havent actually ran a model that uses neg kernel yet though

Co-authored-by: James Contini <jamescontini@gmail.com>
Co-authored-by: Neha Abbas <neabbas@ucsc.edu>
Co-authored-by: Abhijit Ramesh <abhijitramesh2k@gmail.com>

* Remove extra code and format

* Add ops documentation (finally)

* ggml webgpu: add SOFTPLUS unary operator

Implements SOFTPLUS (log(1 + exp(x))) with f16/f32 support. Uses f32
precision for intermediate calculations to prevent f16 overflow.

* Add shader implementation and 4 variants (f32/f16, inplace/non-inplace)
* Register pipelines and device support
* Follow Vulkan backend numerical stability pattern

* ggml webgpu: add EXPM1 unary operator

Implements EXPM1 (exp(x) - 1) with f16/f32 support.

* Add shader implementation and 4 variants (f32/f16, inplace/non-inplace)
* Register pipelines and device support

* ggml webgpu: add FLOOR unary operator

Implements FLOOR (rounds down to nearest integer) with f16/f32 support.

* Add shader implementation and 4 variants (f32/f16, inplace/non-inplace)
* Register pipelines and device support

* ggml webgpu: add CEIL unary operator

Implements CEIL (rounds up to nearest integer) with f16/f32 support.

* Add shader implementation and 4 variants (f32/f16, inplace/non-inplace)
* Register pipelines and device support

* ggml webgpu: add ROUND unary operator

Implements ROUND (rounds to nearest integer) with f16/f32 support.

* Add shader implementation and 4 variants (f32/f16, inplace/non-inplace)
* Register pipelines and device support

* ggml webgpu: add TRUNC unary operator

Implements TRUNC (truncates towards zero) with f16/f32 support.

* Add shader implementation and 4 variants (f32/f16, inplace/non-inplace)
* Register pipelines and device support

* docs : update WebGPU support for unary operators (FLOOR, CEIL, ROUND, TRUNC, EXPM1, SOFTPLUS)

* Updates to webgpu get_memory

* Move shared state (webgpu_context) and device creation out of registration context, device context, and buffer context, and move into backend context

* Small cleanup

* Move Instance, Device, Adapter, Device creation, and capabilities to global state while moving Queue, pipelines, and buffers to per-thread state.

* Cleanups

* More cleanup

* Move staging_buf mutex to global context

* Resolve merge

* Resolve merge

* Resolve merge

* Clean up merge errors, delete forward declaration, and run clang-format

* Rename device_init to backend_init

* Move webgpu_context to backend_context

* Move buffer context members into global context and refactor function calls

* Run clang-format

* Remove commends

* Move parameter buffers to per-thread, add single memset_tensor param buf

* Fix CI compilation issue

* Fix builds for emscripten not supporting subgroups

* cleanup

* cleanup

---------

Co-authored-by: Reese Levine <reeselevine1@gmail.com>
2026-01-30 15:56:40 +02:00
Vishal Singh 9c75c793a6 ggml-zendnn : update ZenDNN git tag to main branch (llama/19133) 2026-01-30 15:56:40 +02:00
Johannes Gäßler 9d94d0f782 CUDA: tune GLM 4.7 Flash FA kernel selection logic (llama/19097) 2026-01-30 15:56:40 +02:00
Alberto Cabrera Pérez 00885e08e2 ggml-cpu: aarm64: q6_K repack gemm and gemv (and generic) implementations (i8mm) #18860 (llama/18888)
* Boilerplate for q6_K repack

* q6_K repack to q6_Kx8 implementation

Signed-off-by: Alberto Cabrera <alberto.cabrera@liquid.ai>

* q6_K generic gemv and gemm

* wip, gemm_q6_K 8x8

* Still WIP: loading of q8s, q6h and q6l

* first working version of q6_K gemm

* Moved q6 loads outside of sb block, Unrolled inner loop

* Replaced modulo with mask

* First implementation of GEMV

* ggml_vdotq_s32 -> vdotq_s32

* Reduce width of accumulators in q6_K gemv

* Bsums instead of calc bias. Preload scales to use vget_lane. Unroll.

* Reuse scales in GEMM (same GEMV opt)

* Added todos for bsum and different qh repack

* Arch fallback

* VSLIQ for merging qh adn ql

* Removed TODO, already tested

* Apply suggestions

Co-authored-by: Georgi Gerganov <ggerganov@gmail.com>

* Removed unused import

---------

Signed-off-by: Alberto Cabrera <alberto.cabrera@liquid.ai>
Co-authored-by: Georgi Gerganov <ggerganov@gmail.com>
2026-01-30 15:56:40 +02:00
Gaurav Garg 5fcbbdc0dd Reduce CPU-side stalls due to the CUDA command buffer being full (llama/19042)
* [CUDA] Reduce CPU-side stalls due to the CUDA command buffer being full

With pipeline parallelism, during prompt processing, the CPU-side CUDA command buffer gets full, stalling the CPU. Due to this, enough work doesn't get submitted to the GPU, causing bubbles in the GPU timeline.
Fix this by setting the CUDA environment variable CUDA_SCALE_LAUNCH_QUEUES to 4x to increase the command buffer size.

* Set the env variable in the CUDA backend registry allocation

* Add link to PR in code comment

* Remove warning logs and update documentation
2026-01-30 15:56:40 +02:00
shalinib-ibm b2e2032856 ggml-cpu: Enable FP16 MMA kernels on PPC (llama/19060) 2026-01-30 15:56:40 +02:00
lhez 56f82a9f33 opencl: add flattened q6_K mv (llama/19054) 2026-01-30 15:56:40 +02:00
Johannes Gäßler 41d5d7bb0e CUDA: fix padding of GQA to power of 2 in FA (llama/19115) 2026-01-30 15:56:40 +02:00
Johannes Gäßler f63848eada CUDA: faster FA for GQA > 1 but not power of 2 (llama/19092) 2026-01-30 15:56:40 +02:00
ccbinn 4372b87b8e metal : fix recommendedMaxWorkingSetSize availability on legacy iOS/macOS (llama/19088)
Co-authored-by: chenbin11 <chenbin11@kuaishou.com>
2026-01-30 15:56:40 +02:00
Aman Gupta 1642a4fb60 ggml-cpu: Use tiled FA for prompt-processing (llama/19012)
* ggml-cpu: Use tiled FA for prompt-processing

the FA performance is gimped on CPU on long contexts because it essentially uses a vector kernel. This PR adds a tiled FA for PP. Perf tuning for tile sizes done on a AMD EPYC single-socket 64-c machine.

* fix out of bounds for mask

* skip rows where there are all masks

* skip tile if mask is inf

* store mask in worksize

* check inf tile earlier
2026-01-30 15:56:40 +02:00
Georgi Gerganov d2b51404e4 kv-cache : support V-less cache (llama/19067)
* kv-cache : support V-less cache

* cuda : better check for V_is_K_view

* cuda : improve V_is_K_view check

* graph : add comments

* hparams : refactor
2026-01-30 15:56:40 +02:00
Johannes Gäßler f53eafd745 CUDA: re-use MLA K data for V in MMA FA (llama/19057) 2026-01-30 15:56:40 +02:00
Aman Gupta 13577a6ce4 ggml-cuda: enable cuda-graphs for `n-cpu-moe` (llama/18934)
* ggml-cuda: add split-wise cuda graph

* add n-cpu-moe compare_llama_bench.py

* fix hip/musa builds
2026-01-30 15:56:40 +02:00
nullname 79f1bb3d35 ggml-hexagon: flash-attn opt (llama/19025)
* optimize flash attention kernel by improving score computation and online softmax update

* wip

* Refactor online softmax update in flash attention kernel for improved performance

* Optimize flash attention kernel by replacing float array with HVX_Vector for score computation

* wip
2026-01-30 15:56:40 +02:00
Neo Zhang 0d9dda5a99 use malloc to support both iGPU and dGPU in same time (llama/18992)
* use malloc to support both iGPU and dGPU in same time

* support windows

---------

Co-authored-by: Neo Zhang Jianyu <jianyu.zhang@intel.com>
2026-01-30 15:56:40 +02:00
Alberto Cabrera Pérez e090d91f5e ggml-cpu: aarm64: q5_K repack gemm and gemv (and generic) implementations (i8mm) (llama/18860)
* Boilerplate for q5_Kx8 REPACK on ARM and fallback

Signed-off-by: Alberto Cabrera <alberto.cabrera@liquid.ai>

* Implements make_block_q5_Kx8 by extending make_block_q4_Kx8

Signed-off-by: Alberto Cabrera <alberto.cabrera@liquid.ai>

* q5_K repack gemm and gemv generics

* Gemm and Gemv ARM implementations (i8mm)

* Improved qh manipulation looking at non-repack vec_dot implementation

* Full unroll

* Apply Q5_K Gemv vand and vshl optimizations to gemm. Improve comments.

Signed-off-by: Alberto Cabrera <alberto.cabrera@liquid.ai>

* Fix wrong fallback definitions of Q5_K

Signed-off-by: Alberto Cabrera <alberto.cabrera@liquid.ai>

* Fixed comments. Reverted unnecessary formatting

Signed-off-by: Alberto Cabrera <alberto.cabrera@liquid.ai>

* Fixed typo in generic definitions

* Switching AND + Shift with Shift Insert. Better op interleaving.

* Vectorize + unroll the block scales

* Apply gemm optimizations to gemv

* Improve bias calculation

---------

Signed-off-by: Alberto Cabrera <alberto.cabrera@liquid.ai>
2026-01-30 15:56:40 +02:00
Georgi Gerganov 3f96a1da0e mla : make the V tensor a view of K (llama/18986)
* mla : pass V as a view of K to the FA op

* cuda : adjust mla logic to new layout

* kv-cache : fix rope shift

* tests : remove comment

* cuda : fix reusable_cutoff

Co-authored-by: Johannes Gäßler <johannesg@5d6.de>

---------

Co-authored-by: Johannes Gäßler <johannesg@5d6.de>
2026-01-30 15:56:40 +02:00
Johannes Gäßler f21d0cbb1a CUDA: fix alignment check for FA (llama/19023) 2026-01-30 15:56:40 +02:00
lhez 0e030b852a opencl: enable the general fp mm for non-cont input and as a fallback for specialized kqv kernel for adreno (llama/18970)
* opencl: add `copy_to_contiguous` and utilize mm kernels

* opencl: only copy to cont for f32 and f16 tensors

* opencl: use cont mm for fallback when dst is large

* opencl: use nb local to copy-to-cont

* opencl: use local offset as well
2026-01-30 15:56:40 +02:00
Aman Gupta d4fafcfc6f CUDA: add gqa_ratio 4 for GLM 4.7 flash (llama/18953) 2026-01-30 15:56:40 +02:00
shaofeiqi 167fec69d5 opencl: add TRI op support (llama/18979) 2026-01-30 15:56:40 +02:00
Aleksei Nikiforov 55927d42ef ggml-zdnn : mark zDNN buffers as non-host (llama/18967)
While buffers reside in host memory,
additional transformation is needed to use buffers with zDNN.

Fixes #18848
2026-01-30 15:56:40 +02:00
Jeff Bolz b7e323f40b vulkan: Remove transfer_ctx, do everything in compute_ctx. (llama/18945)
* vulkan: Remove transfer_ctx, do everything in compute_ctx.

We had a bug where a set_tensor_async (using transfer_ctx) didn't get
submitted before the graph_compute (using compute_ctx) that came after
it. To avoid this sort of issue, just do everything in compute_ctx.

Remove transfer_cmd_pool, which was already unused.

* fix crash with perf logger
2026-01-30 15:56:40 +02:00
Jeff Bolz b2bc4d810b vulkan: support flash attention GQA/split_k with small batches (llama/18938) 2026-01-30 15:56:40 +02:00
Masato Nakasaka 3bbf4ced47 Revert "vulkan: force full subgroups for flash attention to fix intel subgroup crash (#17356)" (llama/18831)
This reverts commit 980b7cd17e055c8c587f79ffda7eb4fddf405566.
2026-01-30 15:56:40 +02:00
Jeff Bolz 660d943ff8 vulkan: Use mul_mat_vec_id for small values of n (llama/18918)
Change ggml_vk_mul_mat_vec_id_q_f16 to loop over the batch dimension and
update the indexing calculations in get_offsets.

Mat-vec is faster than mat-mat for small values of n. We don't get the same
reuse of the weights as in the non-ID path, but with this the cost is linear
in n rather than n>1 being far slower than n==1.
2026-01-30 15:56:40 +02:00
Oliver Simons 924a9e292c CUDA: Fix builds for older CCCL versions by ifdefing strided_iterator (llama/18964)
* CUDA: Fix builds for older CCCL versions by ifdefing strided_iterator

Strided iterator was added in [CCCL
3.1](https://github.com/NVIDIA/cccl/releases/tag/v3.1.0), which is packaged into
[CTK
13.1](https://docs.nvidia.com/cuda/cuda-toolkit-release-notes/index.html#id5)

* Unindent as per code review request
2026-01-30 15:56:40 +02:00