Being someone who uses older systems, I'll just mention that I still use
Intel because -- for better or worse -- I get more trouble-free building of
code on old Intel vs. old gcc (I have not used gnu5).
If gnu5 really is about the same performance as Intel and others, then I
suppose there is no reason why I can't invest effort into laying new gcc
beside old gcc -- hopefully this isn't more work than laying Intel next to
old gcc. But to bring up Ross's point from awhile ago, there are people
stuck using old systems so we do need to make some effort to continue to
support old systems in some manner, I think.
Cheers,
Brent
On Thu, Mar 10, 2016 at 7:42 AM, David A Case <david.case.rutgers.edu>
wrote:
> On Thu, Mar 10, 2016, Gerald Monard wrote:
> >
> > Could there be a way to have (decide on?) a list of OS + compilers for
> > which Amber _should_ compile correctly and all tests pass. I wouldn't
> > mind of course for a list of OS+compilers for which it would be "nice"
> > that it works also well.
>
> If you have not yet done so, please visit the Amber wiki page:
>
> http://ambermd.org/pmwiki/pmwiki.php/Main/Amber16Test
>
> I suspect that we (and our users) get relatively little benefit from all
> the
> work that goes into supporting the Intel and PGI compilers, especially the
> former, which has a different set of bugs in every release.
>
> It would be nice if some kind soul with some free time could run a pmemd
> benchmark (say jac) comparing Intel vs gnu5 on a somewhat modern chip.
> Also, is cpptraj time-constrained enough to warrant the extra optimizations
> that might come from a proprietary compiler? Do we know anything about
> clang
> vs gnu for cpptraj?
>
> I'm willing to be persuaded: almost all my simulations are on GPUs now,
> where
> there is little need for proprietary compilers.
>
> ...dac
>
>
> _______________________________________________
> AMBER-Developers mailing list
> AMBER-Developers.ambermd.org
> http://lists.ambermd.org/mailman/listinfo/amber-developers
>
--
_______________________________________________
Brent P. Krueger.....................phone: 616 395 7629
Professor.................................fax: 616 395 7118
Hope College..........................Schaap Hall 2120
Department of Chemistry
Holland, MI 49423
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Received on Thu Mar 10 2016 - 05:00:08 PST
