[mpich-discuss] How to config mpiexec use rsh as default bootstrap?

[Limin Gu]

Thanks Steven!

I tried your patch, two chunks rejected, I didn't spend time to figure out
the rej diff, but copied that two files from latest nightly build of hydra
code. The build didn't fail, but at runtime, there was a Segmentation Fault
at the end.

Then I replaced the whole hydra directory with latest build, that worked
fine. But this is a much bigger diff than your patch, I would prefer a
smaller patch to just fix this problem I have, so I might have to
hand-to-hand fix the patch as well.

Limin

On Fri, Feb 18, 2011 at 12:33 PM, Steven Sutphen <ssutphen at ualberta.ca>wrote:

> Limin,
> This sounds like a bug that I helped to track down--in my case mpiexec
> blew up in
> if I set either of the HYDRA_BOOTSTRAP environment variables.  The problem
> was that the some of the environment variable handling allocates some
> memory that is freed up in some tail code that is common to all the
> environment variables the HYDRA_BOOTSTRAP* environment parsing does
> not allocate any memory so the pointer used later to free it contains
> garbage.
> Pavan developed a patch that worked for me (after a little hand-to-hand
> combat with one chunk of the patch as the patch was not developed with
> exactly the same files as were distributed in tarball.  I have attached
> the patch, but try it at your own discretion.
>    steve.
>
> On Fri, Feb 18, 2011 at 9:47 AM, Pavan Balaji <balaji at mcs.anl.gov> wrote:
> >
> > Setting the HYDRA_BOOTSTRAP and HYDRA_BOOTSTRAP_EXEC environment
> variables
> > should work. What error are you seeing?
> >
> > Alternatively, you can reconfigure MPICH2 as with
> > --with-hydra-bss=rsh,ssh,fork,slurm,ll,lsf,sge,pbs,none,persist
> >
> > This will reprioritize the launchers to give a higher priority to rsh.
> >
> >  -- Pavan
> >
> > On 02/18/2011 10:39 AM, Limin Gu wrote:
> >>
> >> Hi,
> >>
> >> I have successfully built and run mpich 1.3.2 on our cluster. But since
> >> we rather use bprsh (rsh like) between nodes, I have to specify the
> >> bootstrap at mpiexec command line, like this:
> >>
> >> mpiexec -bootstrap rsh -bootstrap-exec /usr/bin/bprsh
> >>
> >> It works, but is there a way that I can make rsh as the default
> >> bootstrap in some config file, so I don't have to specify that on every
> >> mpiexec command?
> >>
> >> I have tried to set HYDRA_BOOTSTRAP and HYDRA_BOOTSTRAP_EXEC environment
> >> variables, that didn't work.
> >>
> >> Thank you!
> >>
> >> Limin
> >>
> >>
> >>
> >> _______________________________________________
> >> mpich-discuss mailing list
> >> mpich-discuss at mcs.anl.gov
> >> https://lists.mcs.anl.gov/mailman/listinfo/mpich-discuss
> >
> > --
> > Pavan Balaji
> > http://www.mcs.anl.gov/~balaji
> > _______________________________________________
> > mpich-discuss mailing list
> > mpich-discuss at mcs.anl.gov
> > https://lists.mcs.anl.gov/mailman/listinfo/mpich-discuss
> >
> >
>
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>
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