diff --git a/apps/gpu/LBM/MusselOyster/MusselOyster.cpp b/apps/gpu/LBM/MusselOyster/MusselOyster.cpp
index f5aaf7b92abab3bce426e8759c49a045be77e407..5327147f3fe6ea9c6c5c12d59490669c608f92db 100644
--- a/apps/gpu/LBM/MusselOyster/MusselOyster.cpp
+++ b/apps/gpu/LBM/MusselOyster/MusselOyster.cpp
@@ -579,7 +579,7 @@ void multipleLevel(const std::string& configPath)
             if (para->getKernelNeedsFluidNodeIndicesToRun())
                 gridBuilder->findFluidNodes(useStreams);
 
-            gridBuilder->writeGridsToVtk(outPath +  bivalveType + "/grid/part" + std::to_string(generatePart) + "_"); 
+            //gridBuilder->writeGridsToVtk(outPath +  bivalveType + "/grid/part" + std::to_string(generatePart) + "_"); 
             //gridBuilder->writeGridsToVtk(outPath + bivalveType + "/" + std::to_string(generatePart) + "/grid/"); 
             // gridBuilder->writeArrows(outPath + bivalveType + "/" + std::to_string(generatePart) + " /arrow");