Disable per MPI process log output to files for scalability

The test suite created by default one detailed log file per MPI process.
When running the test suite with many MPI processes this becomes an issue
for file systems. Therefore, this change disables the per MPI process log
output by lowering its level to TST_REPORT_NONE. The output stream is set
to stderr, just in case.

Signed-off-by: Christoph Niethammer <[email protected]>

Author: cniethammer

Diff for: mpi_test_suite.c

@@ -142,7 +142,7 @@ int main (int argc, char * argv[])
   MPI_Comm_rank (MPI_COMM_WORLD, &tst_global_rank);
   MPI_Comm_size (MPI_COMM_WORLD, &tst_global_size);
 
-  tst_output_init (DEBUG_LOG, TST_OUTPUT_RANK_SELF, TST_REPORT_MAX, TST_OUTPUT_TYPE_LOGFILE, "tst.log");
+  tst_output_init (DEBUG_LOG, TST_OUTPUT_RANK_SELF, TST_REPORT_NONE, TST_OUTPUT_TYPE_STDERR);
 
   char info_str[MAX_INFO_STRING_LENGTH];
   get_compiler_info(info_str);