[mvapich-discuss] xcbrd tests

[Bas van der Vlies]

On Apr 10, 2007, at 9:14 PM, Shaun Rowland wrote:

> Bas van der Vlies wrote:
>
> First, thank you for mentioning that you were using BLAS instead of
> ATLAS. That is much easier to build and deal with :-) I had not tried
> this previously.
>
>> I have done some more tests only with mvapich2 0.9.8 and build  
>> BLACS/SCALAPACK without any optimization (-O0 -g) for gcc version  
>> 3.4.6 and 4.1.1. For fortran gfortran 4.1.1 is used
>> I can run all tests with gcc version 3.4.6 ;-)
>> With gcc version 4.1.1: 2 tests do not finish:
>>  1) xzgsep
>>  2) xzllt
>> We want to use MVAPICH2 so i did not test MVAPICH1 today,
>
> I am not sure what is going on with your gcc 4.1.1 attempts. Since you
> sent this, I built gcc 4.1.1 and 4.1.2 on the systems I am using. I  
> just
> built MVAPICH2 0.9.8, BLACS, BLAS, and ScaLAPACK using the gcc 4.1.1
> build, since that matches the default version you were trying to  
> use. I
> ran all 102 ScaLAPACK tests from my build, and there were no hangs or
> errors.
>
That is good to hear.  You used the gcc 3.4.6 compiler for your  
tests. That is why i tried this version.

> Could you give me some more details about how you are running these:
>
> - which architecture (IA32, EM64T, X86_64 [Opteron])?
IA32

> - how many processes per node?
2 CPU's per node

> - are you setting any specific MVAPICH2 runtime environment variables?
>
No only one for GFORTRAN  as you suggested

> I've been testing with 4 processes on 2 nodes.  Each node has dual
> dual-core Opteron 270 processors. I have not tried MVAPICH with  
> BLAS in
> place of ATLAS yet. I did not change any of the default optimization
> levels, so this should be a mix of -O3 and -O4.
>
> Also, the version of MVAPICH2 I am using has now been made into a new
> "p1" release tarball, which you can get from our download page for
> MVAPICH2. There were some updates in the 0.9.8 release branch, and the
> new tarball has those - and this corresponds to the SVN repository
> version I mentioned previously. This would be the latest MVAPICH2
> release available.

I will try that version tomorrow. It is now evening here (10 pm)



--
Bas van der Vlies
basv at sara.nl