AMBER Archive (2002)

Subject: RE: parallel sander?

From: Mark Hsieh (hsieh_at_abmaxis.com)
Date: Tue Apr 23 2002 - 14:35:44 CDT


Checking my processes (ps -al), there are two sander processes but
one is stopped in some wait state (do_sel).

000 S 502 6838 6737 0 60 0 - 540 wait4 pts/2 00:00:00
mpirun
000 R 502 6928 6838 99 78 0 - 71594 - pts/2 00:06:10
sander
040 S 502 6929 6928 0 60 0 - 71584 do_sel pts/2 00:00:00
sander

Not sure what this means.

> -----Original Message-----
> From: Mark Hsieh [mailto:hsieh_at_abmaxis.com]
> Sent: Tuesday, April 23, 2002 12:32 PM
> To: amber_at_heimdal.compchem.ucsf.edu
> Subject: parallel sander?
>
>
> Hi,
>
> When I run amber 7 sander (mpich compiled) to minimize, I am able
> to utilize two processors on my dual CPU workstation but when
> I run sander to do dynamics, only one processor is utilized.
> I am using SHAKE NTC=2 at NTB=1. Are there conditions where parallel
> runs are not implemented under sander?
>
> Mark
>
>