[mpich-discuss] Strange behavior of mpd

[Rajeev Thakur]

It is odd because mpd is not involved in the communication. Communication
takes place directly between the MPI processes.
 
Rajeev


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From: owner-mpich-discuss at mcs.anl.gov
[mailto:owner-mpich-discuss at mcs.anl.gov] On Behalf Of Bellanca Gaetano
Sent: Monday, September 29, 2008 3:48 PM
To: mpich-discuss at mcs.anl.gov
Subject: Re: [mpich-discuss] Strange behavior of mpd


Hi Gus,

I thought to something similar, and modify/increase the dimension of the
buffer for mpi. But this didn't solve the problem. Moreover, I had the same
problem on my PC at home, and on a two CPU system at the University, where
there are 16GB of memory.

Moreover, in both the configuration the simulation work once I have
restarted mpd after the boot and also using mpd not launched at boot time
(with root privileges) but started by the user before running the
simulation.
Note that also running mpd  after  the bot with root privileges results in a
correct behavior of the code.

I really don't know: it seems something relevant to the boot-time startup.
For the moment, I use the solution of mpd launched by the user, but the one
with mpd started by the root at boot time is more 'elegant'. 

Regards.

Gaetano




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Gaetano Bellanca - Department of Engineering - University of Ferrara  
Via Saragat, 1 - 44100 - Ferrara - ITALY             
Voice (VoIP):  +39 0532 974809     Fax:  +39 0532 974870
mailto:gaetano.bellanca at unife.it 

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