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From: Rainer Keller (Keller_at_[hidden])
Date: 2006-02-24 09:53:21

Hello dear Benoit,
On Friday 24 February 2006 15:26, Benoit Semelin wrote:
> The configuring script fails alltogether with intel fortran. That's
> presumably because intel fortran works on opterons in 32 bits mode only.
Could You please email the config.log file?
Also, it would be interesting what version of intel-compiler You are using.

> The installation works fine with g95 and gfortran (provided I specify
> the 64 library in LD_LIBRARY_PATH in the case of gfortran)
> But then, when I compile my code with mpif90, it takes about 15 minutes.
Can You strace, on where the compiler is hanging?

> I have the same result on another (quadri dual-core) opteron workstation.
> On the other hand compilation takes only about 10 seconds on a pentium 4
> 2.6 Ghz PC ( open-mpi + ifort).
> Has anyone tried open-mpi on Opteron ? Did you have the same problem?
Yes, it is tested to compile and run user code (C and some fortran) on Opteron
with gcc, pathscale and pgi compilers, but not intel.


PS: When compiling OpenMPI are You using a combination of gcc for C/C++ and
ifort for Fortan compilation?
This will not work, as the compilers have different views on e.g. boolean
variables and values, so parameter passing from Your code into OpenMPI will
be botched up. Currently, You may only use C / Fortran Compiler from one

Dipl.-Inf. Rainer Keller       email: keller_at_[hidden]
  High Performance Computing     Tel: ++49 (0)711-685 5858
    Center Stuttgart (HLRS)        Fax: ++49 (0)711-685 5832
  POSTAL:Nobelstrasse 19   
  ACTUAL:Allmandring 30, R. O.030      AIM:rusraink
  70550 Stuttgart