AMBER Archive (2000)

Subject: Amber6/Compaq

From: jim caldwell (caldwell_at_heimdal.compchem.ucsf.edu)
Date: Fri Sep 15 2000 - 16:27:16 CDT

Hi,

I've determined (with the help of Compaq) that it is NOT
safe to use the -O5 flag for compiling Amber6 in a Tru64 5.x
environment (it works under 4.OD/F) for MPI use on 21264 procesors
(the current ES40 in particular).

The Machine.axp_f90_mpi file doesn't use O5 but just in case you're
desperate to squeeze a bit more speed out of the code -O5 is not the
way to go.

jim

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James W. Caldwell (voice) 415-476-8603
Department of Pharmaceutical Chemistry (fax) 415-502-1411
Mail Stop 0446 (email) caldwell_at_heimdal.ucsf.edu
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University of California
San Francisco, CA 94143-0446
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