[mpich-discuss] Using MPICH2 windows binary with PETSc

[Ben Tay]

Hi Jayesh,

I have tested compiling the example fpi. It ran successfully when I use 
mpiexec in command prompt. However, if I use winmpiexec, after inputting 
a number, it just hang there. I wonder why. I modify the code to let 
n=100 and then it ran w/o any problems.

Also, I found that using processes=1,2,4 gave me slightly different 
results. Is this something like emulating 2 or 4 processors? So I can 
use that to test whether my mpi code is working properly on 4 or 8 
processors?

Lastly, I tried to run the modified fpi.exe in a microsoft windows 
cluster environment but it failed. Do you have any experience with it?

The PETSc developers have also emailed me regarding the corrections 
required to make MPICH2 work with PETSc. I'll give it a try when I'm free

Thank you very much.

Regards.

Jayesh Krishna wrote:
>  Hi,
>
>   
>>> I am not sure MPICH2 for Windows supports Fortran. Did you check?
>>>       
> 	MPICH2 on windows supports fortran. You must use the right fortran
> library (See the windows developer's guide for details - available at
> http://www.mcs.anl.gov/research/projects/mpich2/) to link your programs.
>
>   
>>> Even if it does, since you installed binaries, it may not support ifort.
>>>       
> 	MPICH2 supports the Intel fortran compiler. You must link your
> application (PETSc) with fmpich2.lib (available at MPICH2\lib) for fortran
> support.
>
>    What is the error that you get when you compile PETSc+MPICH2 ?
>    Are you able to compile the sample application fpi.f available in the
> MPICH2\examples directory ?
>
> (PS: I will also check with the PETSc developers regarding this issue.)
>
> Regards,
> Jayesh
> -----Original Message-----
> From: owner-mpich-discuss at mcs.anl.gov
> [mailto:owner-mpich-discuss at mcs.anl.gov] On Behalf Of Tay Wee Beng
> Sent: Thursday, April 24, 2008 7:25 PM
> To: mpich-discuss at mcs.anl.gov
> Subject: [mpich-discuss] Using MPICH2 windows binary with PETSc
>
> Hi,
>
> I'm trying to compile PETSc with MPICH2 in windows cygwin environment. 
> May I know if it's possible?
>
> I was initially using MPICH1 mpich.nt.1.2.5 and there's no problem. 
> However I can't get it to work with MPICH2. I emailed the developers at
> PETSc and they asked:
>
> 1) I am not sure MPICH2 for Windows supports Fortran. Did you check?
>
> 2) Even if it does, since you installed binaries, it may not support ifort.
>
> Can you help to answer these questions?
>
> Hope you can help.
>
> Thank you very much.
>
> Regards.
>
>
>
>
>