fixup: fix an error in sync_with_other_backends

linehill · linehill · commit ca31c30eb698 · 2025-04-10T11:24:24.000+03:00
... when there is only one OpenCL device available.
diff --git a/ggml/src/ggml-opencl/ggml-opencl.cpp b/ggml/src/ggml-opencl/ggml-opencl.cpp
@@ -1238,6 +1238,9 @@ static void ggml_backend_opencl_synchronize(ggml_backend_t backend) {
 // enqueued to it won't start until commands in the other devices have
 // completed.
 static void sync_with_other_backends(ggml_backend_opencl_context * backend_ctx) {
+    if (g_ggml_backend_opencl_devices.size() < 2)
+      return; // No other devices to synchronize with.
+
     std::vector<cl_event> events;
     events.reserve(g_ggml_backend_opencl_devices.size());
 
