Add io test in mpich testsuite.

[simgrid.git] / teshsuite / smpi / mpich3-test / io / i_rdwrord.c

diff --git a/teshsuite/smpi/mpich3-test/io/i_rdwrord.c b/teshsuite/smpi/mpich3-test/io/i_rdwrord.c
new file mode 100644 (file)
index 0000000..147edb6
--- /dev/null
+++ b/teshsuite/smpi/mpich3-test/io/i_rdwrord.c
@@ -0,0 +1,73 @@
+/* -*- 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;
+}