From: ren <redacted>
Date: Fri, 27 Mar 2026 07:05:21 +0000 (-0700)
Subject: metal : Fix dimension constraint violation in matmul2d descriptor (llama/21048)
X-Git-Tag: v0.9.9~6
X-Git-Url: https://git.djapps.eu/?a=commitdiff_plain;h=ce3a3c97e0d6b5a0c1f848119291e597222f5b2a;p=pkg%2Fggml%2Fsources%2Fggml

metal : Fix dimension constraint violation in matmul2d descriptor (llama/21048)

Updates Metal tensor API test probe to fix the dimension constraint violation in the matmul2d descriptor (at least one value must be a multiple of 16).
---

diff --git a/src/ggml-metal/ggml-metal-device.m b/src/ggml-metal/ggml-metal-device.m
index cbef2fb4..17d51b11 100644
--- a/src/ggml-metal/ggml-metal-device.m
+++ b/src/ggml-metal/ggml-metal-device.m
@@ -690,7 +690,7 @@ ggml_metal_device_t ggml_metal_device_init(int device) {
                     "    auto tB = B.slice((int)tgid.x, 0); \n"
                     " \n"
                     "    matmul2d< \n"
-                    "        matmul2d_descriptor(8, 8, dynamic_extent), \n"
+                    "        matmul2d_descriptor(16, 16, dynamic_extent), \n"
                     "        execution_simdgroups<4>> mm; \n"
                     " \n"
                     "    auto cT = mm.get_destination_cooperative_tensor<decltype(tA), decltype(tB), float>(); \n"
@@ -740,7 +740,7 @@ ggml_metal_device_t ggml_metal_device_init(int device) {
                     "    auto tB = B.slice((int)tgid.x, 0); \n"
                     " \n"
                     "    matmul2d< \n"
-                    "        matmul2d_descriptor(8, 8, dynamic_extent), \n"
+                    "        matmul2d_descriptor(16, 16, dynamic_extent), \n"
                     "        execution_simdgroups<4>> mm; \n"
                     " \n"
                     "    auto cT = mm.get_destination_cooperative_tensor<decltype(tA), decltype(tB), float>(); \n"