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On Jan 1, 2014, at 3:17 PM, Pavan Balaji <[email protected]> wrote:
Most often, this is not a problem on “well setup” clusters that have a resource manager installed on them. While not exclusive, 99% of the time, we see this problem when someone is trying to run mpich between their laptop and some remote server.
It comes up often enough on the list to justify detecting the broken case. Jeff
— Pavan
On Jan 1, 2014, at 2:00 PM, Reuti <[email protected]> wrote:
Am 01.01.2014 um 20:25 schrieb Jeff Hammond:
Isn't the process manager infrastructure hetero-safe? At the very least, ssh-ing "uname -a" around the ring of procs can identify the problem on O(1) cost.
As there are clusters without `ssh` availability (i.e. MPICH is running tightly integrated in a queuing system), I would put this in the initial startup call to the slave daemons: `hydra_pmi_proxy` could get an additional parameter about the architecture of the machine where `mpiexec` was issued. It could then return instantly with an error code for something like "refuse to participate".
-- Reuti
Jeff
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On Jan 1, 2014, at 11:33 AM, Pavan Balaji <[email protected]> wrote:
If we detect what the local architecture is, how will we communicate it to other processes without having some infrastructure that is hetergeneous-architecture safe?
— Pavan
On Jan 1, 2014, at 9:50 AM, Jeff Hammond <[email protected]> wrote:
One wonders if MPICH could verify the system was sufficiently homogeneous to function properly during initialization rather than defer detection to an error during communication calls.
Jeff
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On Jan 1, 2014, at 8:07 AM, Matthias Neuer <[email protected]> wrote:
Am 31.12.2013 18:44, schrieb Pavan Balaji:
On Dec 31, 2013, at 10:11 AM, Matthias Neuer <[email protected]> wrote:
On 12/31/2013 04:34 PM, Pavan Balaji wrote:
Are matze-debian and notebook of the same architecture (x86_64 and running the same OS/configuration)?
No, notebook is x86_32 on debian stable and matze-debian is x86_64 on debian testing, but I compiled the program for each system separately.
Such heterogeneous configurations are not supported in mpich.
Ok, thats the problem then. I didn't find that information in the FAQ or in the installation manual.
Thanks for your help. Matthias _______________________________________________ discuss mailing list [email protected] To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss
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-- Pavan Balaji http://www.mcs.anl.gov/~balaji
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-- Pavan Balaji http://www.mcs.anl.gov/~balaji
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