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authorAlbert Cheng <acheng@hdfgroup.org>1998-03-11 06:13:01 (GMT)
committerAlbert Cheng <acheng@hdfgroup.org>1998-03-11 06:13:01 (GMT)
commit2d148236d105a736afcda4af183dd92fcee0845a (patch)
tree9a5b3902fb5aa2274ab374862911f5cb0e478df8 /testpar
parent99b6282ee570e2a2d0cc3e27767c6ad243659952 (diff)
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[svn-r316] Added test for opening parallel file by communicator other than
COMM_WORLD.
Diffstat (limited to 'testpar')
-rw-r--r--testpar/testphdf5.c107
1 files changed, 98 insertions, 9 deletions
diff --git a/testpar/testphdf5.c b/testpar/testphdf5.c
index 1ec2e90..9d8e28f 100644
--- a/testpar/testphdf5.c
+++ b/testpar/testphdf5.c
@@ -23,17 +23,18 @@
/* temporary code end */
/* Constants definitions */
+char *filenames[]={
#ifdef HAVE_PARALLEL
-#define FILE1 "ufs:ParaEg1.h5"
-#define FILE2 "ufs:ParaEg2.h5"
+"ParaEg1.h5f", "ParaEg2.h5f"
#else
-#define FILE1 "Eg1.h5"
-#define FILE2 "Eg2.h5"
+"Eg1.h5f", "Eg2.h5f"
#endif
+};
+
/* 24 is a multiple of 2, 3, 4, 6, 8, 12. Neat for parallel tests. */
-#define SPACE1_DIM1 24
-#define SPACE1_DIM2 20
+#define SPACE1_DIM1 8
+#define SPACE1_DIM2 12
#define SPACE1_RANK 2
#define DATASETNAME1 "Data1"
#define DATASETNAME2 "Data2"
@@ -61,6 +62,10 @@ phdf5write()
herr_t ret; /* Generic return value */
int i, j;
int numprocs, myid;
+ char *fname;
+ int color = 0; /* used for MPI_Comm_split */
+ int mrc; /* mpi return code */
+
#ifdef HAVE_PARALLEL
MPI_Comm comm = MPI_COMM_WORLD;
MPI_Info info = MPI_INFO_NULL;
@@ -73,6 +78,13 @@ phdf5write()
myid = 0;
#endif
+#ifdef NO
+ /* split into two new communicators, one contains the originally */
+ /* odd rank processes, the other the even ones. */
+ color = myid%2;
+ mrc = MPI_Comm_split (MPI_COMM_WORLD, color, myid, &comm);
+ assert(mrc==MPI_SUCCESS);
+#endif
/* setup file access template */
acc_tpl1 = H5Pcreate (H5P_FILE_ACCESS);
@@ -86,7 +98,7 @@ phdf5write()
#endif
/* create the file collectively */
- fid1=H5Fcreate(FILE1,H5F_ACC_TRUNC,H5P_DEFAULT,acc_tpl1);
+ fid1=H5Fcreate(filenames[color],H5F_ACC_TRUNC,H5P_DEFAULT,acc_tpl1);
assert(fid1 != FAIL);
MESG("H5Fcreate succeed");
@@ -163,11 +175,13 @@ start[0], start[1], count[0], count[1], count[0]*count[1]);
/* close dataset collectively */
ret=H5Dclose(dataset1);
assert(ret != FAIL);
+ MESG("H5Dclose1 succeed");
ret=H5Dclose(dataset2);
assert(ret != FAIL);
+ MESG("H5Dclose2 succeed");
/* release all IDs created */
- H5Dclose(sid1);
+ H5Sclose(sid1);
/* close the file collectively */
H5Fclose(fid1);
@@ -217,7 +231,7 @@ phdf5read()
/* open the file collectively */
- fid1=H5Fopen(FILE1,H5F_ACC_RDWR,acc_tpl1);
+ fid1=H5Fopen(filenames[0],H5F_ACC_RDWR,acc_tpl1);
assert(fid1 != FAIL);
/* Release file-access template */
@@ -296,6 +310,75 @@ start[0], start[1], count[0], count[1], count[0]*count[1]);
H5Fclose(fid1);
}
+#ifdef HAVE_PARALLEL
+/*
+ * test file access by communicator besides COMM_WORLD.
+ * Split COMM_WORLD into two, one (even_comm) contains the original
+ * processes of even ranks. The other (odd_comm) contains the original
+ * processes of odd ranks. Processes in even_comm creates a file, then
+ * cloose it, using even_comm. Processes in old_comm just do a barrier
+ * using odd_comm. Then they all do a barrier using COMM_WORLD.
+ * If the file creation and cloose does not do correct collective action
+ * according to the communicator argument, the processes will freeze up
+ * sooner or later due to barrier mixed up.
+ */
+void
+test_split_comm_access()
+{
+ int numprocs, myrank;
+ MPI_Comm comm;
+ MPI_Info info = MPI_INFO_NULL;
+ int color, mrc;
+ int newrank, newprocs;
+ hid_t fid; /* file IDs */
+ hid_t acc_tpl; /* File access properties */
+ herr_t ret; /* generic return value */
+
+ /* set up MPI parameters */
+ MPI_Comm_size(MPI_COMM_WORLD,&numprocs);
+ MPI_Comm_rank(MPI_COMM_WORLD,&myrank);
+ color = myrank%2;
+ mrc = MPI_Comm_split (MPI_COMM_WORLD, color, myrank, &comm);
+ assert(mrc==MPI_SUCCESS);
+ MPI_Comm_size(comm,&newprocs);
+ MPI_Comm_rank(comm,&newrank);
+ printf("oldrank/oldprocs=%d/%d, newrank/newprocs=%d/%d\n",
+ myrank, numprocs, newrank, newprocs);
+
+ if (color){
+ /* odd-rank processes */
+ mrc = MPI_Barrier(comm);
+ assert(mrc==MPI_SUCCESS);
+ }else{
+ /* even-rank processes */
+ /* setup file access template */
+ acc_tpl = H5Pcreate (H5P_FILE_ACCESS);
+ assert(acc_tpl != FAIL);
+
+ /* set Independent Parallel access with communicator */
+ ret = H5Pset_mpi(acc_tpl, comm, info, H5ACC_INDEPENDENT);
+ assert(ret != FAIL);
+
+ printf("filenames[%d]=%s\n", color, filenames[color]);
+ /* create the file collectively */
+ fid=H5Fcreate(filenames[color],H5F_ACC_TRUNC,H5P_DEFAULT,acc_tpl);
+ assert(fid != FAIL);
+ MESG("H5Fcreate succeed");
+
+ /* Release file-access template */
+ ret=H5Pclose(acc_tpl);
+ assert(ret != FAIL);
+
+ ret=H5Fclose(fid);
+ assert(ret != FAIL);
+ }
+ if (myrank == 0){
+ mrc = MPI_File_delete(filenames[color], info);
+ assert(mrc==MPI_SUCCESS);
+ }
+}
+#endif
+
void
usage()
{
@@ -305,6 +388,8 @@ usage()
printf("\tdefault do write then read\n");
printf("\n");
}
+
+
main(int argc, char **argv)
{
@@ -335,7 +420,11 @@ pause_proc(MPI_COMM_WORLD, myid, processor_name, namelen, argc, argv);
}
}
+
if (dowrite){
+#ifdef HAVE_PARALLEL
+ test_split_comm_access();
+#endif
MPI_BANNER("testing PHDF5 writing dataset ...");
phdf5write();
}