At 09:24 AM 2/23/2005, Owen Brazell wrote:
>We have a strange behaviour when running our code on AMD Opterons.
>
>The code is linked with lam 6.5.9 on a 32 bit RHEL 3 system and works fine
>on those system types. When we try and run it on an AMD system which is
>x86_64 RHEL 3 update 3. We obviously have to build 6.5.9 for that system.
>lamboot etc works OK as does the mpirun. However the process's never talk
>to each other. is there a special way I need to build 6.5.9 on the AMD
>systems to allow this to work ?
>
>SPAM: Spamnix identified this message as spam.
>SPAM: Score: 51
If you are running the 32-bit binary, you must build lam on the x86-64
system with consistent 32-bit options, and keep it segregated from 64-bit
builds e.g.
../configure --with-cc='gcc -m32 --with-cxx='g++ -m32' --with-fc=<your
32-bit Fortran compiler> --prefix=/usr/local/lam/32
then of course set your PATH consistent with the lam installation
prefix. In order to enable this, you must install all the "legacy" and
"compatibility" software development and library support options of EL3.
If this is not the situation you face, please explain.
I have been Googling in vain for an explanation of x86-64 32- vs 64-bit
software installation which I could furnish as an preliminary explanation
to those who are new to x86-64, and I have run into a lack of interest on
the part of my colleagues toward vetting my own effort.
Don't know what you did to taunt the spam filters. html, whatever. Best
assure that your postings aren't trapped by them.
Tim Prince
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