[SCore-users] mpirun STDIN usage with Score

[Atsushi HORI]

Hi.

>Well, there is no release and documentation yet which would probably
>answer my question so: you said that for rank 0, STDIN would be
>automatically forwarded. Would that work for both mpirun and scrun, would
>it need any special flags ? 

No, you do not need any specila flags and mpirun should also work 
with STDIN in the same way with scrun. Because the SCore mpirun is a 
script and EXEC scrun eventually.

>Thank you for the explanation and the interface seems quite logical to me.
>However, CHARMM only needs to do I/O on rank 0, so we don't need 
>redirection for all ranks. But should I understand that in order to 
>support loops in CHARMM I should still use this feature which would copy 
>STDIN and then let CHARMM do rewinds on a normal file ?

Yes. Is this inconvenient ? I understand that you want to have a 
generic script to run your programs on different platfroms, but as 
you said, many MPI does not support the "redirection" and I believe 
there is no general way with this.

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Atsushi HORI
Swimmy Software, Inc.