The official Darshan 2.2.6 release is now available on the Darshan web site (http://www.mcs.anl.gov/darshan), and the online documentation has been updated accordingly. This release includes performance enhancements as well as various minor bug fixes and compatibility improvements. darshan-2.2.6 ============= * Bug fixes: - make sure to honor user-specified hints passed in at runtime via the DARSHAN_LOGHINTS env variable. - include fread and fwrite in darshan-job-summary.pl read and write counts - fix segmentation fault on invalid arguments to darshan-parser * Performance enhancements: - collect mount point information at rank 0 and broadcast to all processes to avoid excess file system traffic on startup - change default MPI-IO hints for writing log file to romio_no_indep_rw=true and cb_nodes=4 to improve log creation performance * Install libdarshan-util and headers during installation process for darshan-util; patch contributed by Matthieu Dorier * Detect PMPI support at link time when using compiler scripts produced by the darshan-gen-* utilities. This avoids link problems when Darshan compiler wrappers are used with the ADIOS dummy MPI library; reported by Jingqing Mu * Support MPICH_{CC/CXX/F77} environment variables in compiler scripts produced by the darshan-gen-* utilities * Add instrumentation of startup time, enabled via DARSHAN_INTERNAL_TIMING environment variable * 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 * Remove deprecated --enable-st-dev-workaround configure option * Misc. documentation updates thanks, -Darshan development team