Insert barrier after each GPU halo test

diff --git a/src/gromacs/domdec/tests/haloexchange_mpi.cpp b/src/gromacs/domdec/tests/haloexchange_mpi.cpp
index 63659998efe79bd3fb26e9ea20cf628a09623584..45b8364f8087a5a81373f9748ceb95d53baa446e 100644 (file)
--- a/src/gromacs/domdec/tests/haloexchange_mpi.cpp
+++ b/src/gromacs/domdec/tests/haloexchange_mpi.cpp
@@ -164,6 +164,7 @@ void gpuHalo(gmx_domdec_t* dd, matrix box, HostVector<RVec>* h_x, int numAtomsTo
             gpuHaloExchange[d][pulse].communicateHaloCoordinates(box, &coordinatesReadyOnDeviceEvent);
         }
     }
+    MPI_Barrier(MPI_COMM_WORLD);
 
     GpuEventSynchronizer haloCompletedEvent;
     haloCompletedEvent.markEvent(deviceStream);