============= * improved error handling when writing log files. If a write fails then the log file will be deleted and a warning will be printed to stderr.
2.1.1
============= * new darshan-convert command line utility for converting existing log files, with optional anonymization and optional bzip2 compression * bzip2 support in command line utilities (but not in the darshan library itself) * updated log file format that allows for string key/value pairs to be stored in the header * added ability to set MPI-IO hints when writing darshan log at configure time: --with-log-hints at run time: DARSHAN_LOGHINTS environment variable * bug fix contributed by Sandra Schröder: use case-insensitive search for MPI symbols in Fortran wrapper script * performance bug fix: remove unecessary call to MPI_File_set_size when writing log * added --with-logpath-by-env configure option to allow absolute log path to be specified via environment variable
2.1.0
============= * additinoal environment variables to control log, jobid and alignment parameters * additional configure tests to improve portability * bug fixes for darshan-parser --perf calucations * support for MPI1.x * support for OpenMPI * support for PGI, Intel compilers * new libdarshan.so dynamic library for use with LD_PRELOAD
2.0.2
============= * added a random identifier to job logs (to avoid collisions from multiple application instances within a single scheduler job) * improved installation and library path management for darshan-job-summary.pl * improved error handling in darshan-job-summary.pl * additional derived statistics categories for darshan-parser output: --all : all sub-options are enabled --base : darshan log field data [default] --file : total file counts --perf : derived perf data --total : aggregated darshan field data
2.0.1
============= * bug fix to variance/minimum calculations on shared files * switch to automatic generation of all MPI compiler scripts using darshan-gen-* tools * new run time environment variable: DARSHAN_INTERNAL_TIMING. If set at job execution time, it will cause Darshan to time its own internal data aggregation routines and print the results to stdout at rank 0.
2.0.0
============= * new output file format that is portable across architectures NOTE: Darshan 1.x output files are incompatible with the tools in this release unless they were generated on a ppc32 architecture (Blue Gene) * 8 new counters that record the rank of the fastest and slowest process that opened each shared file, along with the number of seconds and number of bytes consumed by those processes. It also reports the variance in both time and amount of data. * new --with-jobid-env configure argument to support recording job identifiers from different schedulers * job ID is now recorded within the Darshan log in addition to in the file name * darshan-job-summary.pl: * opens output files directly without using intermediate darshan-parser output * table showing data usage per file system * table showing I/O variance in shared files * Fixes for bugs reported by Noah Watkins: * avoid name collision in hashing function * divide by zero error in darshan-job-summary.pl