autogenerate an example epilog script

darshan-runtime/Makefile.in

@@ -154,6 +154,7 @@ endif
 	install -m 755 share/mpi-profile/darshan-bg-cc.conf $(datarootdir)/mpi-profile/darshan-bg-cc.conf
 	install -m 755 share/mpi-profile/darshan-bg-cxx.conf $(datarootdir)/mpi-profile/darshan-bg-cxx.conf
 	install -m 755 share/mpi-profile/darshan-bg-f.conf $(datarootdir)/mpi-profile/darshan-bg-f.conf
+	install -m 755 share/darshan-mmap-epilog.sh $(datarootdir)/darshan-mmap-epilog.sh
 	install -m 644 darshan-base-ld-opts $(datarootdir)/darshan-base-ld-opts
 	install -m 644 $(srcdir)/darshan-posix-ld-opts $(datarootdir)/darshan-posix-ld-opts
 	install -m 644 $(srcdir)/darshan-hdf5-ld-opts $(datarootdir)/darshan-hdf5-ld-opts

darshan-runtime/configure

@@ -4322,7 +4322,7 @@ DARSHAN_VERSION="3.0.0-pre3"
 
 
 
-ac_config_files="$ac_config_files Makefile darshan-mk-log-dirs.pl darshan-gen-cc.pl darshan-gen-cxx.pl darshan-gen-fortran.pl darshan-base-ld-opts darshan-config share/craype-1.x/darshan-module share/craype-2.x/darshan-module lib/pkgconfig/darshan-runtime.pc share/mpi-profile/darshan-cc.conf share/mpi-profile/darshan-cxx.conf share/mpi-profile/darshan-f.conf share/mpi-profile/darshan-bg-cc.conf share/mpi-profile/darshan-bg-cxx.conf share/mpi-profile/darshan-bg-f.conf"
+ac_config_files="$ac_config_files Makefile darshan-mk-log-dirs.pl darshan-gen-cc.pl darshan-gen-cxx.pl darshan-gen-fortran.pl darshan-base-ld-opts darshan-config share/craype-1.x/darshan-module share/craype-2.x/darshan-module lib/pkgconfig/darshan-runtime.pc share/mpi-profile/darshan-cc.conf share/mpi-profile/darshan-cxx.conf share/mpi-profile/darshan-f.conf share/mpi-profile/darshan-bg-cc.conf share/mpi-profile/darshan-bg-cxx.conf share/mpi-profile/darshan-bg-f.conf share/darshan-mmap-epilog.sh"
 
 cat >confcache <<\_ACEOF
 # This file is a shell script that caches the results of configure
@@ -5032,6 +5032,7 @@ do
     "share/mpi-profile/darshan-bg-cc.conf") CONFIG_FILES="$CONFIG_FILES share/mpi-profile/darshan-bg-cc.conf" ;;
     "share/mpi-profile/darshan-bg-cxx.conf") CONFIG_FILES="$CONFIG_FILES share/mpi-profile/darshan-bg-cxx.conf" ;;
     "share/mpi-profile/darshan-bg-f.conf") CONFIG_FILES="$CONFIG_FILES share/mpi-profile/darshan-bg-f.conf" ;;
+    "share/darshan-mmap-epilog.sh") CONFIG_FILES="$CONFIG_FILES share/darshan-mmap-epilog.sh" ;;
 
   *) as_fn_error $? "invalid argument: \`$ac_config_target'" "$LINENO" 5;;
   esac

darshan-runtime/configure.in

@@ -345,4 +345,5 @@ share/mpi-profile/darshan-f.conf
 share/mpi-profile/darshan-bg-cc.conf
 share/mpi-profile/darshan-bg-cxx.conf
 share/mpi-profile/darshan-bg-f.conf
+share/darshan-mmap-epilog.sh
 )

darshan-runtime/share/darshan-mmap-epilog.sh.in

+#!/bin/bash
+
+#
+# Copyright (C) 2015 University of Chicago.
+# See COPYRIGHT notice in top-level directory.
+#
+
+# grab the prefix of the darshan install directory
+DARSHAN_INSTALL_DIR=@prefix@
+
+# use the log dir specified at configure time
+DARSHAN_LOG_DIR=@__DARSHAN_LOG_PATH@
+
+NODE_NAME=$(uname -n)
+
+# use the default mmap log directory (/tmp), unless the 
+# env variable is set to something
+if [ -z "$DARSHAN_MMAP_LOGPATH" ]; then
+    DARSHAN_MMAP_LOG_DIR=/tmp
+else
+    DARSHAN_MMAP_LOG_DIR=$DARSHAN_MMAP_LOGPATH
+fi
+
+DARSHAN_MMAP_LOG_GLOB=${DARSHAN_MMAP_LOG_DIR}/*id${SLURM_JOB_ID}*.darshan
+
+# if no mmap logs found for this job, we have nothing to do
+DARSHAN_TEST_LOG=$(ls $DARSHAN_MMAP_LOG_GLOB 2>/dev/null | head -n 1)
+if [ -z $DARSHAN_TEST_LOG ]; then
+    exit 0
+fi
+
+# get the job start time from the first log file
+JOB_START_DATE=$(${DARSHAN_INSTALL_DIR}/bin/darshan-parser $DARSHAN_TEST_LOG |
+    grep "# start_time_asci" | cut -d':' -f 2- | cut -d' ' -f 2-)
+OUTLOG_YEAR=$(date --date="$(printf "$JOB_START_DATE")" +"%Y")
+OUTLOG_MON=$(date --date="$(printf "$JOB_START_DATE")" +"%-m")
+OUTLOG_DAY=$(date --date="$(printf "$JOB_START_DATE")" +"%-d")
+OUTLOG_SECS=$((
+    ($(date --date="$(printf "$JOB_START_DATE")" +"%-H") * 60 * 60) +
+    ($(date --date="$(printf "$JOB_START_DATE")" +"%-M") * 60) +
+    ($(date --date="$(printf "$JOB_START_DATE")" +"%-S"))
+))
+
+MMAP_LOG_PRE=$(basename $DARSHAN_TEST_LOG | cut -d'_' -f 1-3)
+
+# construct full output log directory name
+OUTLOG_DIR=${DARSHAN_LOG_DIR}/${OUTLOG_YEAR}/${OUTLOG_MON}/${OUTLOG_DAY}/
+OUTLOG_DIR=$OUTLOG_DIR/${MMAP_LOG_PRE}_${OUTLOG_MON}-${OUTLOG_DAY}-${OUTLOG_SECS}
+
+# create the output directory for this job
+mkdir -p $OUTLOG_DIR
+
+# construct the per-node log files and store in the output directory
+$DARSHAN_INSTALL_DIR/bin/darshan-merge --output ${OUTLOG_DIR}/${MMAP_LOG_PRE}_${NODE_NAME}.darshan \
+    $DARSHAN_MMAP_LOG_GLOB
+
+exit 0