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Good luck.
On Sep 2, 2005, at 7:36 AM, a17567182 wrote:
> Hello,
>
> Could anyone explain the limit of MPI processes allowed to be run?
> I have a Linux RedHat box with MPICH 1.2.6 using shmem installed. I
> cannot run
> 80 MPI processes (aborted with the message "exceeding max num of p4
> semids
> 16"), 79 processes fail to finalise and 78 processes run fine. In
> mpid/ch_shmem/p2psemop.c there is a definition
> #define P2_MAX_SYSV_SEMIDS 8
> which is used later to print out this error message:
> setnum = p2_global->sysv_next_lock / 10;
> if (setnum > P2_MAX_SYSV_SEMIDS)
> {
> p2p_error("exceeding max num of p4 semids\n",P2_MAX_SYSV_SEMIDS);
> }
> I cannot find where this p2_global->sysv_next_lock is initialised by
> 78 or 79
> and why this value is set?
>
> Thanks,
>
> Anton
>
>
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--
{+} Jeff Squyres
{+} jsquyres_at_[hidden]
{+} http://www.lam-mpi.org/
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