[Beowulf] pvm freezes

Eduardo Nobuhiro Asada asada at dsee.fee.unicamp.br
Mon Aug 1 19:11:29 EDT 2005


Hi Reuti,
Indeed, its a strange behavior. It happens with the nntime program. This
program sends packages with larger sizes to test the communication speed.
In the first run it is
fast, however if it is executed again rapidly, it freezes, then I give
ctrl-c. I think it is
related to the initialization of the network card, or to the pvm daemon.
If I wait a while for another run, it works fine. Do you have any
idea about it? I haven't restarted the daemon.

Eduardo

On Tue, 2 Aug 2005, Reuti wrote:

> Hi,
>
> so the daemons continue to operate? And this also happens with the
> hello/hello_other program from the PVM documentation? And after you
> restart the program it works again, or do you have to restart the
> damons? For me I never saw this behavior.
>
> Cheers - Reuti
>
>
> Am 28.07.2005 um 20:11 schrieb Eduardo N. Asada:
>
> > Hi ,
> >
> > I have noticed in my pvm programs and also with the examples
> > provided with the
> > package that when I run it several times, generally the program
> > freezes in
> > the third time (or in the second time). Then I have to interrupt it
> > and run
> > it again and this behavior repeats.
> >
> > What is the reason for this ? Is it related to the network card ?
> > Does it
> > happen with mpi also ?
> >
> > Regards.
> >
> >
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>
>

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