--- /dev/null
+/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
+/*
+ * (C) 2014 by Argonne National Laboratory.
+ * See COPYRIGHT in top-level directory.
+ */
+#include "mpi.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include "mpitest.h"
+
+/*
+static char MTEST_Descrip[] = "Test reading and writing ordered output";
+*/
+
+int main(int argc, char *argv[])
+{
+ int errs = 0;
+ int size, rank, i, *buf, rc;
+ MPI_File fh;
+ MPI_Comm comm;
+ MPI_Status status;
+ MPI_Request request;
+
+ MTest_Init(&argc, &argv);
+
+ comm = MPI_COMM_WORLD;
+ MPI_File_open(comm, (char *) "test.ord",
+ MPI_MODE_RDWR | MPI_MODE_CREATE | MPI_MODE_DELETE_ON_CLOSE, MPI_INFO_NULL, &fh);
+
+ MPI_Comm_size(comm, &size);
+ MPI_Comm_rank(comm, &rank);
+ buf = (int *) malloc(size * sizeof(int));
+ buf[0] = rank;
+ rc = MPI_File_write_ordered(fh, buf, 1, MPI_INT, &status);
+ if (rc != MPI_SUCCESS) {
+ MTestPrintErrorMsg("File_write_ordered", rc);
+ errs++;
+ }
+ /* make sure all writes finish before we seek/read */
+ MPI_Barrier(comm);
+
+ /* Set the individual pointer to 0, since we want to use a iread_all */
+ MPI_File_seek(fh, 0, MPI_SEEK_SET);
+ rc = MPI_File_iread_all(fh, buf, size, MPI_INT, &request);
+ if (rc != MPI_SUCCESS) {
+ MTestPrintErrorMsg("File_iread_all", rc);
+ errs++;
+ }
+ MPI_Wait(&request, &status);
+
+ for (i = 0; i < size; i++) {
+ if (buf[i] != i) {
+ errs++;
+ fprintf(stderr, "%d: buf[%d] = %d\n", rank, i, buf[i]);
+ }
+ }
+
+ MPI_File_seek_shared(fh, 0, MPI_SEEK_SET);
+ for (i = 0; i < size; i++)
+ buf[i] = -1;
+ MPI_File_read_ordered(fh, buf, 1, MPI_INT, &status);
+ if (buf[0] != rank) {
+ errs++;
+ fprintf(stderr, "%d: buf[0] = %d\n", rank, buf[0]);
+ }
+
+ free(buf);
+ MPI_File_close(&fh);
+
+ MTest_Finalize(errs);
+ MPI_Finalize();
+ return 0;
+}