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Fix too relaxed check on CUDA "fast copy" (can_be_transposed) condition (llama/17332)

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* Fix too relaxed check on CUDA "fast copy" (can_be_transposed) condition

* Argh.

* Making CISC happy ;)

* Integrate CONT tests

* Use loopy loop

* Skip new tests for (B)F16 for now.
This commit is contained in:
Piotr Wilkin (ilintar)
2025-12-12 17:53:03 +02:00
committed by Georgi Gerganov
parent 2097a9c1bd
commit 746cbed20a
1 changed files with 2 additions and 1 deletions
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ggml/src/ggml-cuda/cpy.cu
+2 -1
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@@ -384,7 +384,8 @@ void ggml_cuda_cpy(ggml_backend_cuda_context & ctx, const ggml_tensor * src0, gg
char * src1_ddc = (char *) src1->data; char * src1_ddc = (char *) src1->data;
const bool contiguous_srcs = ggml_is_contiguous(src0) && ggml_is_contiguous(src1); const bool contiguous_srcs = ggml_is_contiguous(src0) && ggml_is_contiguous(src1);
const bool can_be_transposed = nb01 == (int64_t)ggml_element_size(src0) && src0->ne[3] == 1; const bool can_be_transposed = nb01 == (int64_t)ggml_element_size(src0) &&
src0->ne[3] == 1 && nb02 == ne00 * ne01 * (int64_t)ggml_element_size(src0);
if (src0->type == src1->type && contiguous_srcs) { if (src0->type == src1->type && contiguous_srcs) {
GGML_ASSERT(ggml_nbytes(src0) == ggml_nbytes(src1)); GGML_ASSERT(ggml_nbytes(src0) == ggml_nbytes(src1));