hello_world: Add call to clFinish()

1 files changed, 8 insertions, 0 deletions

diff --git a/hello_world.c b/hello_world.c
index b1b12be..dd8f7d9 100644
--- a/hello_world.c
+++ b/hello_world.c
@@ -186,6 +186,14 @@ int main(int argc, char ** argv)
 
    fprintf(stderr, "clEnqueueNDRangeKernel() suceeded.\n");
 
+   error = clFinish(command_queue);
+   if (error != CL_SUCCESS) {
+      fprintf(stderr, "clFinish() failed: %s\n", clUtilErrorString(error));
+      return EXIT_FAILURE;
+   }
+
+   fprintf(stderr, "clFinish() succeeded.\n");
+
    error = clEnqueueReadBuffer(command_queue,
                                 out_buffer,
                                 CL_TRUE, /* TRUE means it is a blocking read. */