HP-UX Reference (11i v1 00/12) - 5 Miscellaneous Topics, 7 Device (Special) Files, 9 General Information, Index (vol 9)
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STANDARD Printed by: Nora Chuang [nchuang] STANDARD
/build/1111/BRICK/man7/!!!intro.7
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g
gang_sched(7) gang_sched(7)
• Gang scheduling is completely shut down when Process Resource Manager (PRM) is enabled.
• If a gang-scheduled process is selected to be swapped out, the process will not be gang-scheduled
when it is swapped back in.
• Realtime processes are not gang-scheduled.
• Gang scheduling is only supported for processes with timeshare scheduling policies.
• When a gang-scheduled process contains the maximum number of threads (or the maximum
number of processes, for MPI applications), threads or processes created after this point are not
scheduled as part of the gang. For details see the BEHAVIOR section of this man page.
• Multiprocess applicationsthat do not use MPI are not supported by the gang scheduler.
FILES
The following are libraries used in providing gang scheduling:
/usr/lib/libpthread.1 The pthread library.
/opt/mpi The directory containing MPI libraries and MPI software. HP MPI is an optional product.
SEE ALSO
fork(2), exec(2).
HP-UX Release 11i: December 2000 − 3 − Section 7−−39
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