Add early returns in clearDeviceBuffer(...) in OpenCL and CUDA

[alexxy/gromacs.git] / src / gromacs / gpu_utils / devicebuffer_ocl.h

diff --git a/src/gromacs/gpu_utils/devicebuffer_ocl.h b/src/gromacs/gpu_utils/devicebuffer_ocl.h
index fe489926c8c48ed591ebfd912050b34e521ab946..a6d9e6813461f9d01287ab252424017c29cf5a51 100644 (file)
--- a/src/gromacs/gpu_utils/devicebuffer_ocl.h
+++ b/src/gromacs/gpu_utils/devicebuffer_ocl.h
@@ -259,6 +259,10 @@ void clearDeviceBufferAsync(DeviceBuffer<ValueType>* buffer,
                             size_t                   numValues,
                             const DeviceStream&      deviceStream)
 {
+    if (numValues == 0)
+    {
+        return;
+    }
     GMX_ASSERT(buffer, "needs a buffer pointer");
     const size_t    offset        = startingOffset * sizeof(ValueType);
     const size_t    bytes         = numValues * sizeof(ValueType);