-machinefile support

[Chris Samuel]

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On Thu, 30 Oct 2003 05:49 am, Pete Wyckoff wrote:

[about mpiexec having a -machinefile option]

> My main complaint is the potential for confusion.  PBS generates a list
> of hosts and mpiexec can only run on those hosts, no matter what is in
> the machinefile.  I'm afraid that this option will tempt users to try to
> use mpiexec outside of PBS, or with hosts not provided in a given PBS
> allocation.

Hmm, but doesn't mpirun in the current MPICH from ANL use -machinefile 
already, and is open to similar abuse ?

Not saying that it makes it right for mpiexec to have it, but it does mean 
that it's slightly easier to port people to using it if they only need to 
change a name.

You could even replace the mpirun program they use with mpiexec, but I suspect 
that's just asking for trouble when they see different behaviour.

- -- 
 Christopher Samuel - (03)9925 4751 - VPAC Systems & Network Admin
 Victorian Partnership for Advanced Computing http://www.vpac.org/
 Bldg 91, 110 Victoria Street, Carlton South, VIC 3053, Australia

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