From 2092adc0f6bc1137b4bc2f0a8f36ee8657e85c93 Mon Sep 17 00:00:00 2001
From: jpekkila <johannes.pekkila@aalto.fi>
Date: Fri, 5 Jul 2019 15:44:30 +0300
Subject: [PATCH] Preparations for multi-GPU optimizations

---
 src/core/astaroth.cu | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/core/astaroth.cu b/src/core/astaroth.cu
index 749111c..5d16b31 100644
--- a/src/core/astaroth.cu
+++ b/src/core/astaroth.cu
@@ -386,7 +386,7 @@ acSynchronize(void)
 AcResult
 acBoundcondStep(void)
 {
-    acSynchronize();
+    acSynchronizeStream(STREAM_ALL);
     if (num_devices == 1) {
         boundcondStep(devices[0], STREAM_PRIMARY, (int3){0, 0, 0}, subgrid.m);
     }
@@ -445,6 +445,8 @@ acBoundcondStep(void)
         <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
         */
     }
+    // TODO, better to use acSynchronizeStream here and let the user call acSynchronizeHalos when
+    // needed
     acSynchronize();
     return AC_SUCCESS;
 }