<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
</head>
<body bgcolor="#FFFFFF" text="#000000">
<p>Darshan 2.3.1-pre2 is now available on the <a title="Download"
href="http://press3.mcs.anl.gov/darshan/download/">download</a>
page for testing and feedback. The most significant changes since
2.3.1-pre1 are better support for recent MPICH releases, examples
and documentation for the -profile hooks in MPICH, and the
addition of a regression testing framework. Our plan is to
feature freeze at this point and focus on platform testing for the
final 2.3.1 release.</p>
<p>The full changelog since 2.3.0 is as follows:<br>
</p>
<p>darshan-2.3.1-pre2<br>
=============<br>
* added documentation and example configuration files for using
the -profile<br>
or $MPICC_PROFILE hooks to add instrumentation to MPICH-based
MPI<br>
implementations without generating custom wrapper scripts<br>
* Add wrappers for mkstemp(), mkostemp(), mkstemps(), and
mkostemps()<br>
(reported by Tom Peterka)<br>
* Change OPEN_TIMESTAMP field to report timestamp right before
open() is<br>
invoked rather than after timestamp after open is completed.<br>
NOTE: updated log format version to 2.06 to reflect this change.<br>
* Change start_time and end_time fields in job record to use min
and max<br>
(respectively) across all ranks<br>
* Fix bug in write volume data reported in file system table in<br>
darshan-job-summary.pl (reported by Matthieu Dorier)<br>
* Clean up autoconf test for zlib and make zlib mandatory
(reported by Kalyana<br>
Chadalavada)<br>
* add --start-group and --end-group notation to Darshan libraries
for Cray PE<br>
2.x environment to fix link-time corner cases (Yushu Yao)<br>
* improve y axis labels on time interval graphs in
darshan-job-summary.pl<br>
(reported by Tom Peterka)<br>
* misc. improvements to darshan-parser --perf output (reported by
Shane<br>
Snyder)<br>
- indicate which rank was slowest in unique file results<br>
- label I/O vs. meta time more clearly<br>
- include unique file meta time in agg_perf_by_slowest
calculation<br>
* added regression test script framework in
darshan-test/regression/<br>
- workstation-static and workstation-dynamic test environments
supported<br>
* update darshan-gen-fortran.pl and darshan-gen-cxx.pl to support
new library<br>
naming conventions in MPICH 3.1.1 and higher<br>
* update documentation to reflect known issues with some versions
of MPICH<br>
</p>
<p>thanks,<br>
-Darshan development team<br>
</p>
</body>
</html>