From 9432f5a8dd64035f7f80d3211dd3d8dced8b11b8 Mon Sep 17 00:00:00 2001
From: girishc <girishc>
Date: Mon, 22 Sep 2003 08:36:46 +0000
Subject: [PATCH] updating from parent branch(b_llp_hp) to b_nfsllphp

---
 lustre/tests/createmany-mpi.c | 131 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 131 insertions(+)
 create mode 100644 lustre/tests/createmany-mpi.c

diff --git a/lustre/tests/createmany-mpi.c b/lustre/tests/createmany-mpi.c
new file mode 100644
index 0000000..1474b7b
--- /dev/null
+++ b/lustre/tests/createmany-mpi.c
@@ -0,0 +1,131 @@
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <time.h>
+#include <errno.h>
+#include <string.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdarg.h>
+
+#include "mpi.h"
+
+void usage(char *prog)
+{
+	printf("usage: %s {-o|-m} filenamefmt count\n", prog);
+	printf("       %s {-o|-m} filenamefmt -seconds\n", prog);
+	printf("       %s {-o|-m} filenamefmt start count\n", prog);
+}
+
+/* Print process rank, loop count, message, and exit (i.e. a fatal error) */
+int rprintf(int rank, int loop, const char *fmt, ...)
+{
+        va_list       ap;
+
+        printf("rank %d, loop %d: ", rank, loop);
+
+        va_start(ap, fmt);
+
+        printf(fmt, ap);
+
+        MPI_Finalize();
+        exit(1);
+}
+
+int main(int argc, char ** argv)
+{
+        int i, rc = 0, do_open, rank;
+        char format[4096], *fmt;
+        char filename[4096];
+        long start, last, end;
+	long begin = 0, count;
+
+        rc = MPI_Init(&argc, &argv);
+        if (rc != MPI_SUCCESS)
+                rprintf(-1, -1, "MPI_Init failed: %d\n", rc);
+
+        if (argc < 4 || argc > 5) {
+		usage(argv[0]);
+                return 1;
+        }
+
+        if (strcmp(argv[1], "-o") == 0) {
+                do_open = 1;
+        } else if (strcmp(argv[1], "-m") == 0) {
+                do_open = 0;
+        } else {
+		usage(argv[0]);
+                return 1;
+        }
+
+        if (strlen(argv[2]) > 4080) {
+                printf("name too long\n");
+                return 1;
+        }
+
+        rc = MPI_Comm_rank(MPI_COMM_WORLD, &rank);
+        if (rc != MPI_SUCCESS)
+                rprintf(-1, -1, "MPI_Comm_rank failed: %d\n", rc);
+
+        rc = MPI_Barrier(MPI_COMM_WORLD);
+        if (rc != MPI_SUCCESS)
+                rprintf(rank, -1, "prep MPI_Barrier failed: %d\n", rc);
+
+        start = last = time(0);
+
+	if (argc == 4) {
+		end = strtol(argv[3], NULL, 0);
+		if (end > 0) {
+			count = end;
+			end = -1UL >> 1;
+		} else {
+			end = start - end;
+			count = -1UL >> 1;
+		}
+	} else {
+		end = -1UL >> 1;
+		begin = strtol(argv[3], NULL, 0);
+		count = strtol(argv[4], NULL, 0);
+	}
+
+	if (strchr(argv[2], '%'))
+		fmt = argv[2];
+	else {
+		sprintf(format, "%s%%d", argv[2]);
+		fmt = format;
+	}
+	printf("starting at %s", ctime(&start));
+        for (i = 0; i < count && time(0) < end; i++, begin++) {
+                sprintf(filename, fmt, begin);
+                if (do_open) {
+                        int fd = open(filename, O_CREAT|O_RDWR, 0644);
+                        if (fd < 0) {
+                                printf("open(%s) error: %s\n", filename,
+                                       strerror(errno));
+                                rc = errno;
+                                break;
+                        }
+                        close(fd);
+                } else {
+                        rc = mknod(filename, S_IFREG| 0444, 0);
+                        if (rc) {
+                                printf("mknod(%s) error: %s\n",
+                                       filename, strerror(errno));
+                                rc = errno;
+                                break;
+                        }
+                }
+                if ((i % 10000) == 0) {
+                        printf(" - created %d (time %ld ; total %ld ; last %ld)\n",
+                               i, time(0), time(0) - start, time(0) - last);
+                        last = time(0);
+                }
+        }
+        printf("total: %d creates in %ld seconds: %f creates/second\n", i,
+               time(0) - start, ((float)i / (time(0) - start)));
+	start = time(0);
+	printf("finish at %s", ctime(&start));
+
+        return rc;
+}
-- 
1.8.3.1