From dadbed99e65252d79f81101a392d0d6497b86caa Mon Sep 17 00:00:00 2001 From: Shouzheng Liu Date: Mon, 21 Aug 2023 06:59:29 -0400 Subject: [PATCH] metal : fix synchronization in new matrix multiplication kernel (#2686) --- ggml-metal.metal | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/ggml-metal.metal b/ggml-metal.metal index 3f31252..88d48f6 100644 --- a/ggml-metal.metal +++ b/ggml-metal.metal @@ -1898,10 +1898,11 @@ kernel void kernel_mul_mm(device const uchar * src0, threadgroup float *temp_str = ((threadgroup float *)shared_memory) \ + 32 * (sgitg&1) + (16 * (sgitg>>1)) * BLOCK_SIZE_M; for (int i = 0; i < 8; i++) { + threadgroup_barrier(mem_flags::mem_device); simdgroup_store(c_res[i], temp_str + 8 * (i%4) + 8 * BLOCK_SIZE_M * (i/4), BLOCK_SIZE_M); } - threadgroup_barrier(mem_flags::mem_threadgroup); + threadgroup_barrier(mem_flags::mem_device); device float *C = dst + BLOCK_SIZE_M * r0 + (BLOCK_SIZE_N * r1) * ne0 + im*ne1*ne0; if (sgitg==0) { for (int i = 0; i < n_rows; i++) { -- 2.41.0