What are the user relevant improvements in BG/L software V1R1M0 ?
- Optimized Allgather and Allgatherv in co-processor mode.
- Increased file descriptor limit in ciodb to 2048.
- Added support to allow running of multiple jobs on same partition without reboot of either I/O or compute nodes. In particular, one will be able to run a job in virtual node mode right afterrunning a job in coprocessor mode.
- Improve performance of core file generation.
MPIRUN ENHANCEMENTS
- MPIRUN default verbosity is now set to 0. Added new command line argument -kernel_options and environment variable MPIRUN_KERNEL_OPTIONS to mpirun. Either can be used to set kernel verbosity.
- Added -version and -v flag, which print the version number for mpirun.
- Enhanced mpirun to support all mpiexec command line options.
- MPIRUN will now fail when the number of requested processors is not available.
- MPIRUN scheduler interface library has been
enhanced to include all these recent additions:
- -nofree
- tells MPIRUN to leave the partition as is at the end
- -label
- tells MPIRUN to add labels to the output from the BG/L job (stdout/stderr, rank)
- -nw
- tells MPIRUN to ignore whatever exit status it gets from the BG/L job, and to use its own set of exit status
- Fixed: MPI_Alltoall performance was degraded in 202.
- Fixed: 8 byte aligned MPI_DOUBLE_COMPLEX PROD or SUM may give wrong results
last change 26.07.2006 |
Ulrike Schmidt | Print