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Subject: Re: [OMPI users] System CPU of openmpi-1.7rc1
From: Ralph Castain (rhc_at_[hidden])
Date: 2012-10-25 21:04:54


Out of curiosity, what does MUMPS finalize do? Does it send a message or do a barrier operation?

On Oct 25, 2012, at 5:53 PM, tmishima_at_[hidden] wrote:

>
>
> Hi,
>
> I find that system CPU time of openmpi-1.7rc1 is quite different with
> that of openmpi-1.6.2 as shown in the attached ganglia display.
>
> About 2 years ago, I reported a similar behavior of openmpi-1.4.3.
> The testing method is what I used at that time.
> (please see my post entitled "SYSTEM CPU with OpenMPI 1.4.3")
>
> Is this due to a pre-released version's check routine or does
> something go wrong?
>
> Best regards,
> Tetsuya Mishima
>
> ------------------
> Testing program:
> INCLUDE 'mpif.h'
> INCLUDE 'dmumps_struc.h'
> TYPE (DMUMPS_STRUC) MUMPS_PAR
> c
> MUMPS_PAR%COMM = MPI_COMM_WORLD
> MUMPS_PAR%SYM = 1
> MUMPS_PAR%PAR = 1
> MUMPS_PAR%JOB = -1 ! INITIALIZE MUMPS
> CALL MPI_INIT(IERR)
> CALL DMUMPS(MUMPS_PAR)
> c
> CALL MPI_COMM_RANK( MPI_COMM_WORLD, MYID, IERR )
> IF ( MYID .EQ. 0 ) CALL SLEEP(180) ! WAIT 180 SEC.
> c
> MUMPS_PAR%JOB = -2 ! FINALIZE MUMPS
> CALL DMUMPS(MUMPS_PAR)
> CALL MPI_FINALIZE(IERR)
> c
> END
> ( This does nothing but just calls intialize & finalize
> routine of MUMPS & MPI)
>
> command line : mpirun -host node03 -np 16 ./testrun
>
> (See attached file: openmpi17rc1-cmp.bmp)<openmpi17rc1-cmp.bmp>_______________________________________________
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