The ABINIT Users Mailing List ( CLOSED )

[Yann Pouillon <yann.pouillon@ehu.es>]

Hi,

Le Fri, 6 Jul 2007 09:17:16 +0200, maurosgroi@yahoo.it a écrit :

> I've a cluster composed by 2 pentium IV and 1 AMD Athlon64.
> Should I optimize the abinit code for a generic architecture and use
> exactly the same excutable on all CPus (for example supplying
> -march=generic to gfortran) or I can optimise the code for each
> architecture and use excutables optimised on each PC?

Here we have a very similar cluster (well ... with many more processors,
but still the same kind), and we use two optimised versions of the code, each
of them located in a directory which can be seen only from one type of
processor. The directories are mounted so that they appear with the same path
to the running jobs, then the users do not have to care about where they are
performing their calculations.

I don't know if this is the best solution, but it is working pretty well.

Best regards,

Yann.

-- 
Yann Pouillon               European Theoretical Spectroscopy Facility (ETSF)
Tel: (+34) 943 01 83 94     Centro Joxe Mari Korta, Avenida de Tolosa, 72
Fax: (+34) 943 01 83 90     20018 Donostia-San Sebastián (Gipuzkoa)
Web: http://www.etsf.es/    España