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Subject: Re: [OMPI users] System CPU of openmpi-1.7rc1
From: tmishima_at_[hidden]
Date: 2012-10-25 21:43:58


Hi Ralph,

do you really mean "MUMPS finalize"? I don't think it has much relation
with
this behavior?

Anyway, I'm just a mumps user. I have to ask mumps developers about what
MUMPS
initailize and finalize does.

Regartds,
tmishima

> 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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