Re: mpich, I/O, Master node, filesystem

From: David Case <>
Date: Wed 7 Aug 2002 22:14:25 -0700

On Thu, Aug 08, 2002, Jianhui Wu wrote:
> A computer guy asked me
> whether the I/O is done by the master node (in a batch mode) or via
> the shell node (in an interactive mode).

The master node (node 0) does all I/O. The program is running in what
I think everyone would call "batch mode".

> Secondly, do MPICH
> requires a shared filesystem (instead of distributed filesystem)?

No, a shared filesystem is not required; the "slave" nodes never access
any filesystem (shared or otherwise.)


David A. Case                     |  e-mail:
Dept. of Molecular Biology, TPC15 |  fax:          +1-858-784-8896
The Scripps Research Institute    |  phone:        +1-858-784-9768
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Received on Wed Aug 07 2002 - 22:14:25 PDT
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