From 34ba7b5a2f5cd88f99629a3bd68d003fbd5bc2cf Mon Sep 17 00:00:00 2001
From: Georgi Gerganov <ggerganov@gmail.com>
Date: Sat, 7 Feb 2026 07:37:15 +0200
Subject: [PATCH] metal : fix event synchronization in cpy_tensor_async
 (#19402)

---
 ggml/src/ggml-metal/ggml-metal-context.m | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ggml/src/ggml-metal/ggml-metal-context.m b/ggml/src/ggml-metal/ggml-metal-context.m
index c7e8ebd3f3..5d3a8ce412 100644
--- a/ggml/src/ggml-metal/ggml-metal-context.m
+++ b/ggml/src/ggml-metal/ggml-metal-context.m
@@ -394,7 +394,7 @@ bool ggml_metal_cpy_tensor_async(ggml_metal_t ctx_src, ggml_metal_t ctx_dst, con
         [encoder endEncoding];
 
         ggml_metal_event_t ev_cpy = ggml_metal_get_ev_cpy(ctx_src);
-        ggml_metal_event_record(ctx_src, ev_cpy);
+        ggml_metal_event_encode_signal(ev_cpy, cmd_buf);
 
         [cmd_buf commit];