[mpich-discuss] regarding parallel proramming error

[Mahesh Doijade]

Can you attached your machinefile, your code and detailed error output.


On Tue, Aug 20, 2013 at 4:11 PM, urmila pol <urmilec at gmail.com> wrote:

> Dear sir,
>
> I was given following command it will give floating point error .
> #mpirun -f mfile -np 2  hello4
> Floating point exception
>
> if I give following it will execute for single node
>
> [root at masternode ~]# mpirun -np 2 hello4
> Hello world from processor masternode.csd.com, rank 0 out of 2 processors
> Hello world from processor masternode.csd.com, rank 1 out of 2 processors
> [root at masternode ~]#
>
> Please guide me for above error .waiting for ur reply.
>
>
>
>
>
>
>
> On 8/20/13, urmila pol <urmilec at gmail.com> wrote:
> > I do everything now i have one error flaoting point exception i am
> > running my program now
> > waiting for ur reply
> >
> > With regards,
> >
> > Dr.Urmila R. Pol
> > Assistant Professor,
> > Department of computer Science,
> > Shivaji University, Kolhapur.
> >
> >
> > On Tue, Aug 20, 2013 at 10:44 AM, Mahesh Doijade
> > <maheshdoijade at gmail.com>wrote:
> >
> >>
> >>      The issue seems to be that you have probably not created a
> >> machinefile which consists of node name to number of processes mapping
> >> and
> >> this file should be present in the same dir. of the other nodes on which
> >> you are launching other MPI processes, this is required in case you want
> >> to
> >> run the MPI program across the two or more nodes, you can find more
> >> details
> >> of the format in which this information has to be in the machinefile and
> >> the other requisite steps need for running your MPI program across
> >> multiple
> >> nodes from this link
> >> http://wiki.mpich.org/mpich/index.php/Using_the_Hydra_Process_Manager
> >>        Also, in order to launch the processes across multiple nodes you
> >> need to do ssh passwordless login among those nodes, in case you are
> >> using
> >> ssh as the connection mechanism, you can find more details about the
> >> procedure for ssh passwordless login over here
> >> http://www.techlitic.com/ssh-passwordless-login.html
> >>
> >>
> >> Regards,
> >> Mahesh Doijade,
> >> http://www.techdarting.com/
> >>
> >>
> >> On Tue, Aug 20, 2013 at 8:34 AM, Pavan Balaji <balaji at mcs.anl.gov>
> wrote:
> >>
> >>>
> >>> I'm pasting the error inline, for others' information.
> >>>
> >>> FYI, the error is "unable to open host file: machinefile".
> >>>
> >>> ----8<----
> >>> mpirun -f machinefile -n 2 /home/urp/mpich-install/hello
> >>> [mpiexec at masternode.csd.com] HYDU_parse_hostfile
> >>> (./utils/args/args.c:323): unable to open host file: machinefile
> >>> [mpiexec at masternode.csd.com] mfile_fn (./ui/mpich/utils.c:341): error
> >>> parsing hostfile
> >>> [mpiexec at masternode.csd.com] match_arg (./utils/args/args.c:153):
> match
> >>> handler returned error
> >>> [mpiexec at masternode.csd.com] HYDU_parse_array
> (./utils/args/args.c:175):
> >>> argument matching returned error
> >>> [mpiexec at masternode.csd.com] parse_args (./ui/mpich/utils.c:1609):
> error
> >>> parsing input array
> >>> [mpiexec at masternode.csd.com] HYD_uii_mpx_get_parameters
> >>> (./ui/mpich/utils.c:1660): unable to parse user arguments
> >>> [mpiexec at masternode.csd.com] main (./ui/mpich/mpiexec.c:153): error
> >>> parsing parameters
> >>> [root at masternode ~]#
> >>> ----8<----
> >>>
> >>> On 08/19/2013 01:27 AM, urmila pol wrote:
> >>>
> >>>> Dear sir,
> >>>>
> >>>> I have attaching the screenshots of my errors please guide me .waiting
> >>>> for reply.
> >>>>
> >>>>
> >>>> With regards,
> >>>>
> >>>> Dr.Urmila R. Pol
> >>>> Assistant Professor,
> >>>> Department of computer Science,
> >>>> Shivaji University, Kolhapur.
> >>>>
> >>>>
> >>> --
> >>> Pavan Balaji
> >>> http://www.mcs.anl.gov/~balaji
> >>> ______________________________**_________________
> >>> discuss mailing list     discuss at mpich.org
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> https://lists.mpich.org/mailman/listinfo/discuss>
> >>>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >
>
>
> --
> With regards,
>
> Dr.Urmila R. Pol
> Assistant Professor,
> Department of computer Science,
> Shivaji University, Kolhapur.
>



-- 

Regards,
-- Mahesh Doijade
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