From 5bc0c8525445045d35e013dcc26d57d20f6283e6 Mon Sep 17 00:00:00 2001
From: Mendy Berger <12537668+MendyBerger@users.noreply.github.com>
Date: Fri, 14 Aug 2026 02:16:20 -0400
Subject: [PATCH] ggml: force single thread on wasi (llama/25686)

---
 ggml/src/ggml-cpu/ggml-cpu.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/ggml/src/ggml-cpu/ggml-cpu.c b/ggml/src/ggml-cpu/ggml-cpu.c
index 7918845cc..87ac0a702 100644
--- a/ggml/src/ggml-cpu/ggml-cpu.c
+++ b/ggml/src/ggml-cpu/ggml-cpu.c
@@ -2795,6 +2795,11 @@ struct ggml_cplan ggml_graph_plan(
     n_threads = 1;
 #endif
 
+#if defined(__wasi__)
+    // WASI doesn't support parallelism yet
+    n_threads = 1;
+#endif
+
     size_t work_size = 0;
 
     struct ggml_cplan cplan;