Re: [ptp-dev] SDM scalability issue

[Leonardo Augusto Guimarães Garcia <lagarcia@xxxxxxxxxxxxxxxxxx>]

Thanks, Greg!

Leonardo Garcia
IDE Software Engineer - Linux on Cell
Linux Technology Center Brazil
Phone: +55-19-2132-2068 (T/L: 839-2068)
lagarcia@xxxxxxxxxx


Greg Watson wrote:
> Leonardo,
>
> I just found the bug causing this problem and have checked in a fix. 
> See bug #255524. I'll do a build tonight so you can test.
>
> Greg
>
> On Nov 14, 2008, at 9:35 PM, Leonardo Augusto Guimarães Garcia wrote:
>
> > Hi,
> >
> > I am having a weird problem while debugging with PTP 2.1.0.
> >
> > I have a cluster of 10 Power machines running Linux Fedora 9 and Open 
> > MPI 1.3. I can run MPI applications from command line and from within 
> > PTP on this cluster without problems, even when I use 10 processes 
> > distributed on the 10 nodes I have.
> >
> > However, when I try to debug the application (I am using the "Open 
> > MPI Pi C Project" that comes with PLDT) I am able to debug without 
> > problems using any number of processes on my cluster from 1 to 7. 
> > However, when I switch to 8 processes or more, the debug session is 
> > started and connected, SDM is started, but the processes don't 
> > suspend execution in the beginning of the debug session. After a 
> > while, some processes may get suspended, but in all cases one of two 
> > things happens: none of the process get suspended or some of the 
> > processes (usually two of them) have their debug session broken and 
> > the debug session enters an inconsistent state from which I can only 
> > get out when I cancel the debug completely.
> >
> > I've already tried to launch the 8 processes using different 
> > combinations of the machines in the cluster. I always get the same 
> > problem. On the other hand, if I try different combinations of 
> > machines with 7 processes, it always works fine.
> >
> > Does anyone already faced something similar to that?
> >
> > Best regards,
> >
> > Leonardo Garcia
> >
> > _______________________________________________
> > ptp-dev mailing list
> > ptp-dev@xxxxxxxxxxx
> > https://dev.eclipse.org/mailman/listinfo/ptp-dev
>
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--
Leonardo Garcia
Linux on Cell and Prism Focal Point - LTC Brazil
IDE Software Engineer - Linux on Cell
Linux Technology Center Brazil
Phone: +55-19-2132-2068 (T/L: 839-2068)
lagarcia@xxxxxxxxxx