[Darshan-users] Darshan 2.3.1-pre1 release

[Phil Carns]

Darshan 2.3.1-pre1 is now available for download on the Darshan web 
site, and the release changelog is listed below.  Please let us know if 
you have any feedback or suggestions.  We'll be working to turn this 
into a stable release in the coming weeks.

thanks
-Darshan development team

darshan-2.3.1-pre1
=============
* Add wrappers for mkstemp(), mkostemp(), mkstemps(), and mkostemps()
   (reported by Tom Peterka)
* Change OPEN_TIMESTAMP field to report timestamp right before open() is
   invoked rather than after timestamp after open is completed.
   NOTE: updated log format version to 2.06 to reflect this change.
* Change start_time and end_time fields in job record to use min and max
   (respectively) across all ranks
* Fix bug in write volume data reported in file system table in
   darshan-job-summary.pl (reported by Matthieu Dorier)
* Clean up autoconf test for zlib and make zlib mandatory (reported by 
Kalyana
   Chadalavada)
* add --start-group and --end-group notation to Darshan libraries for 
Cray PE
   2.x environment to fix link-time corner cases (Yushu Yao)
* improve y axis labels on time interval graphs in darshan-job-summary.pl
   (reported by Tom Peterka)
* misc. improvements to darshan-parser --perf output (reported by Shane
   Snyder)
   - indicate which rank was slowest in unique file results
   - label I/O vs. meta time more clearly
   - include unique file meta time in agg_perf_by_slowest calculation