From 346b4116fc5d589e29e367b6c39d71272be43844 Mon Sep 17 00:00:00 2001
From: Thomas Ponweiser <thomas.ponweiser@risc-software.at>
Date: Mon, 25 Apr 2016 12:03:42 +0200
Subject: [PATCH] parallel io: added error handling for "read2shmem" example
---
read2shmem/read2shmem.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/read2shmem/read2shmem.c b/read2shmem/read2shmem.c
index 28b4324..7016393 100644
--- a/read2shmem/read2shmem.c
+++ b/read2shmem/read2shmem.c
@@ -41,6 +41,13 @@ int main(int argc, char *argv[])
MPI_Comm_size(MPI_COMM_WORLD, &world_size);
master = world_rank == 0;
+ // We want the program to stop on I/O errors
+ // -> Change the default I/O error hander from MPI_ERRORS_RETURN to MPI_ERRORS_ARE_FATAL
+ // Notes:
+ // * An individual I/O error handler can be associated to each file handle.
+ // * The default I/O error handler is associated to the null file handle, i.e. MPI_FILE_NULL.
+ MPI_File_set_errhandler(MPI_FILE_NULL, MPI_ERRORS_ARE_FATAL);
+
if(verbose) print_info_world();
// Broadcast name of file to open
--
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