[Beowulf] Intel 64bit (emt) Fortran code and AMD Opteron

Mikhail Kuzminsky kus at free.net
Fri Oct 29 12:09:46 EDT 2004


In message from Roland Krause <rokrau at yahoo.com> (Thu, 28 Oct 2004 
12:06:40 -0700 (PDT)):
>Folks,
>does anybody here have positive or negative experiences with using 
>the
>Intel EMT-64 Fortran compiler on AMD Opteron systems? 
We have very small ifort/8.1.023 experiense on our Opteron - it's not
enough to say about compilers comparison.

But you may found comparison results at //www.polyhedron.com site.
As I remember, best results are for PathScale, which is really the 
best in a lot of tests, and ifort is on the second position.

But you should take into account that ifort 8.1.023 at some highest
optimization level compiler keys generate the codes, which check
(at the run time) the processor used and will not work on Opteron.

>
>I am at this point not so much interested in speed issues but more
>stability and correctness especially with respect to OpenMP.

According our experience w/ifc -7.1, it is realtive stable. I beleive
ifort-8.1 will be also good. But we didn't use OpenMP in our
application programs (we checked OpenMP only on some tests).

Yours
Mikhail Kuzminsky
Zelinsky Institute of Organic Chemistry
Moscow

> Or in
>other words: Is it worth trying yet? 
>
>Best regards,
>Roland
>
>
>
>
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