change default MPI-IO hints for writing log file

git-svn-id: https://svn.mcs.anl.gov/repos/darshan/trunk@677 3b7491f3-a168-0410-bf4b-c445ed680a29

ChangeLog

@@ -11,6 +11,8 @@ darshan-2.2.6-pre1
 * Rename cp-shutdown-bench test utility to darshan-shutdown-bench and enable
   benchmarking hooks in library by default so that darshan-shutdown-bench 
   can be used with any Darshan installation.
+* Change default MPI-IO hints for writing log file to
+  romio_no_indep_rw=true and cb_nodes=4 to improve log creation performance
 
 darshan-2.2.5
 =============

darshan-runtime/configure.in

@@ -132,8 +132,7 @@ fi
 if test x$GOT_JOBID != x1; then
     AC_MSG_ERROR(must provide --with-jobid-env=<name> argument to configure.)
 fi
-#__CP_LOG_HINTS_DEFAULT="romio_no_indep_rw=true;cb_nodes=8"
-__CP_LOG_HINTS_DEFAULT=""
+__CP_LOG_HINTS_DEFAULT="romio_no_indep_rw=true;cb_nodes=4"
 if test x$GOT_LOG_HINTS != x1; then
 dnl use default hints
     AC_DEFINE_UNQUOTED(__CP_LOG_HINTS, "$__CP_LOG_HINTS_DEFAULT", Comma-separated list of MPI-IO hints for log file write)

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

@@ -60,6 +60,9 @@
 /* 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