GpuSynchronize() to prevent cudaStreams over-writing shared arrays for positions

1 files changed, 3 insertions, 0 deletions

diff --git a/Source/Particles/PhysicalParticleContainer.cpp b/Source/Particles/PhysicalParticleContainer.cpp
index 7ac887b85..c0960b141 100644
--- a/Source/Particles/PhysicalParticleContainer.cpp
+++ b/Source/Particles/PhysicalParticleContainer.cpp
@@ -1112,6 +1112,9 @@ PhysicalParticleContainer::FieldGather (int lev,
                                        costarr(i,j,k) += wt;
                                    });
             }
+            // synchronize avoids cudaStreams from over-writing the temporary arrays used to 
+            // store positions
+            Gpu::synchronize();
         }
     }
 }