add reduction to check for partial flag

darshan-runtime/darshan-runtime-config.h.in

@@ -63,6 +63,9 @@
 /* Define to the one symbol short name of this package. */
 #undef PACKAGE_TARNAME
 
+/* Define to the home page for this package. */
+#undef PACKAGE_URL
+
 /* Define to the version of this package. */
 #undef PACKAGE_VERSION
 

darshan-runtime/lib/darshan-core.c

@@ -261,6 +261,7 @@ void darshan_core_shutdown()
     double header1, header2;
     double tm_end;
     uint64_t gz_fp = 0;
+    unsigned char tmp_partial_flag;
     MPI_File log_fh;
     MPI_Status status;
 
@@ -549,6 +550,13 @@ void darshan_core_shutdown()
             mod2[i] = DARSHAN_MPI_CALL(PMPI_Wtime)();
     }
 
+    /* run a reduction to determine if any application processes had to set the
+     * partial flag. this happens when a process has tracked too many records
+     * at once and cannot track new records
+     */
+    DARSHAN_MPI_CALL(PMPI_Reduce)(&(final_core->log_header.partial_flag),
+        &tmp_partial_flag, 1, MPI_UNSIGNED_CHAR, MPI_MAX, 0, MPI_COMM_WORLD);
+
     if(internal_timing_flag)
         header1 = DARSHAN_MPI_CALL(PMPI_Wtime)();
     /* rank 0 is responsible for writing the log header */
@@ -558,6 +566,7 @@ void darshan_core_shutdown()
         strcpy(final_core->log_header.version_string, DARSHAN_LOG_VERSION);
         final_core->log_header.magic_nr = DARSHAN_MAGIC_NR;
         final_core->log_header.comp_type = DARSHAN_ZLIB_COMP;
+        final_core->log_header.partial_flag = tmp_partial_flag;
 
         all_ret = DARSHAN_MPI_CALL(PMPI_File_write_at)(log_fh, 0, &(final_core->log_header),
             sizeof(struct darshan_header), MPI_BYTE, &status);