AMBER: mdfil: Error unknown flag: -p4pg

From: Aaron Greenwood <>
Date: Mon, 29 Oct 2007 13:38:44 -0600

I tried to run amber 9 in parallel mode using mpich and submitting the
job with qsub. I get a strange, at least to me, error.

 mdfil: Error unknown flag: -p4pg

     usage: sander [-O|A] -i mdin -o mdout -p prmtop -c inpcrd -r restrt
                   [-ref refc -x mdcrd -v mdvel -e mden -idip inpdip
-rdip rstdip -mdip mddip -ng numgroup -remlog remlog -rem [0|1|2] -inf
mdinfo -radii radii]
Consult the manual for additional options.

I noted that someone had previously submitted a similar error to the
list but I was unable to find the answer in the achieve.

Best regards,


Aaron Greenwood
Systems Administrator
McPherson/Poulos Groups
University of California
Irvine, CA 92697
Office: 9327 Battle Creek Street NW
Albuquerque, NM 87114
Home Tele: 505.890.8218
Cell: 951.818.0594
The AMBER Mail Reflector
To post, send mail to
To unsubscribe, send "unsubscribe amber" to
Received on Wed Oct 31 2007 - 06:07:37 PDT
Custom Search