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Alex Granovsky
gran@classic.chem.msu.su

That's OK. The 64-bit package contains support of both 64-bit
and 32-bit applications. Just install it and use mpiexec
to launch Firefly. You'll need to replace MPI bindings dll and
to learn how to use mpiexec :)

All the best,
Alex


On Thu Feb 16 '12 3:56pm, Vyacheslav wrote
------------------------------------------
>Hi,
>there is new interesting problem: OS refuses to install the 32-bit version of MS MPI library! We could not force to do it. The system demands 64-bit version by all means.

>Vyacheslav

>******************************************************************
>On Thu Feb 16 '12 12:29pm, Alex Granovsky wrote
>-----------------------------------------------
>>Hi Vyacheslav,

>>I searched through mpich-smp.dll and did not find any string
>>resembling "PROCESSOR_COUNT". Most likely, you will not be able
>>to use more than 32 cores with nt-mpich-smp. I'd suggest you to
>>switch to MS MPI for this purpose. It is free and can be found here:

>>http://www.microsoft.com/download/en/details.aspx?displaylang=en&id=7904

>>Regards,
>>Alex Granovsky
>>
>>
>>
>>On Thu Feb 16 '12 11:17am, Vyacheslav wrote
>>-------------------------------------------
>>>Hi,
>>>thanks very much!  I set variable value MPI_GLOBMEMSIZE=536870912  forever :-)
>>>Now FF works up to 32 cores. I found the following text:

>>>"By default, mpich limits the number of processes for the ch_shmem device to 32, unless it determines at configure time that the machine has more processors.
>>>You can override this limit by setting the environment variable PROCESSOR_COUNT to the maximum number of processes that you will want to run, and then reconfigure and remake mpich."

>>>Does it concern the given restriction? If yes, what to do? I am far from such things.

>>>Vyacheslav
>