Remove memory allocation on GPU from MPI worker nodes (espressomd#3911)

Fixes espressomd#3910 Description of changes: - create an asynchronous stream on the GPU only for the head node
jngrad · Oct 13, 2020 · 402cc66 · 402cc66
1 parent 39522f5
commit 402cc66
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/src/core/event.cpp b/src/core/event.cpp
@@ -89,7 +89,9 @@ static int reinit_particle_comm_gpu = true;
 void on_program_start() {
 
 #ifdef CUDA
-  cuda_init();
+  if (this_node == 0) {
+    cuda_init();
+  }
 #endif
 
   /*