AMBER Archive (2003)

Subject: Re: Info request: Amber on 64-bit CPUs

From: Chuck Schneider (schneider_at_overdo.mro.cpqcorp.net)
Date: Tue Feb 25 2003 - 09:02:49 CST


Dr. Svozil asked about compilability of AMBER 7 on 64-bit architectures.
My vested interest in the subject is obvious, but I think I can offer
some objective information:

For Alpha, there will be no trouble on Tru64. I expect the same for
Linux, assuming Compaq Fortran is used - I have done this build, though
not recently. I would be very surprised if any trouble were found on
OpenVMS, but I don't speak from experience in that case.

For Itanium 2, running Linux with Intel compilers, I and others have
encountered trouble (run-time errors) using -O3 optimization, but
success using -O2.

One option not specifically mentioned by Dr. Svozil is Itanium 2
running HP-UX. The HP compilers are 64-bit, and will build AMBER
with no trouble.

Regards,

-- 
Chuck Schneider    chuck.schneider_at_hp.com
Hewlett-Packard Company
High Performance Computing Expertise Center
Marlboro, Massachusetts  508-467-7343