Darshan 1.1.12 release

March 12th, 2010


  • improved mapping of file records to mount points
  • new page in darshan-job-summary.pl output showing timelines of file access
  • bug fix to “fast” mpif90 script
  • checkpoint/restart ability in parallel fsstats script

Darshan 1.1.12 is now available on the download page.

Darshan 1.1.11 release

March 1st, 2010


  • Bug fix for lseek, pread, and pwrite when used in 32 applications without large file support
  • Improved experimental darshan-gen-cc.pl script
  • Added new experimental darshan-gen-cxx.pl script

Darshan 1.1.11 is now available on the download page.

Darshan 1.1.10 release

February 4th, 2010


  • Bug fix for files that are accessed with stat() but never opened
  • Work around zlib problems with 64 bit offsets on 32 bit architectures

Darshan 1.1.10 is now available on the download page.

Production deployment updates

January 27th, 2010

Darshan has been successfully deployed on both the Surveyor and Intrepid BG/P systems at Argonne National Laboratory as of January 14, 2010!  This means that all newly compiled applications are using Darshan by default on those systems.

Upcoming development work will be focused on how to mine the Darshan data to learn more about how users perform I/O at leadership scale.

Darshan 1.1.9 release

January 27th, 2010


  • Added “fast” version of each BG/P compiler
  • Added experimental scripts in test directory to run fsstats in parallel
  • Kevin Harms: Added experimental utilities for loading darshan results into SQL
  • Use exclusive flag when opening output file (to protect against file name collision)
  • Rob Ross: updates to allow command line tools to build on Darwin
  • Bug fix for pnetcdf configure problem reported by Rob Latham; darshan now always pulls in MPI_Wtime() symbol at link time

Darshan 1.1.9 is now available on the download page.

Darshan 1.1.8 release

December 14th, 2009


  • Added tracking of file system type and mount point for each file
  • Added tracking of file size at open time (CP_SIZE_AT_OPEN)
  • Moved sync cost to be counted in cumulative write time rather than cumulative metadata time
  • Added sync as a separate category in darshan-job-summar.pl counters
  • Bug fix to most frequent access size table in darshan-job-summary.pl
  • Converted all utilities to use darshan-logutils api for reading output files
  • Added backwards compatibility to darshan-logutils routines
  • Kevin Harms: Added darshan-analyzer utility to summarize usage of MPI-IO, pNetCDF, HDF5, and shared files across a set of output files
  • Fixed bug field listing for darshan-diff utility

Darshan 1.1.8 is now available on the download page.

Darshan 1.1.7 release

November 13th, 2009


  • Minor fix for a compile warning

Darshan 1.1.7 is now available on the download page.

Darshan 1.1.6 release

November 10th, 2009


  • Kevin Harms: bug fix for segfault in apps that use MPI_Init_thread()

Darshan 1.1.6 is now available on the download page.

Darshan 1.1.5 release

November 3rd, 2009


  • Limit PMPI usage in library to fewer functions
  • Update PMPI detection in compiler scripts to ignore functions unused by Darshan

This release is now available on the download page.

Darshan 1.1.4 release

October 30th, 2009


  • Track files opened via Parallel NetCDF
  • Track files opened via HDF5
  • Record slowest individual POSIX read and write times along with access size for those operations
  • Inspect symbols at compile time to determine whether to enable Darshan or not based on the presence of MPI and PMPI symbols
  • Use GNU and IBM compilers from path rather than hard coded location
  • Simplify warning message if unable to open log file
  • Remove unused internal benchmark routines

This release is now available on the download page.  Note that the output files generated by Darshan 1.1.4 are not compatible with the output files generated by 1.1.3.