[mpich-discuss] code from different version of LINUX

Junchao Zhang jczhang at mcs.anl.gov
Wed Nov 26 12:45:51 CST 2014


I guess it is not an MPI problem. When you say "every CPU works on all the
data", you need a clear idea of what is the data decomposition in your code.


--Junchao Zhang

On Wed, Nov 26, 2014 at 11:28 AM, Shuchi Yang <yang.shuchi at gmail.com> wrote:

> Thanks for your reply. I am trying it in the way you mentioned.
> But I met one problem is that on my original machine, I can run the code
> with 20 CPUs so that each CPU works on part of the job. But at the new
> machine, it starts the process with 20 CPUS, but every CPU works on all the
> data, so that it looks like it is running 20 times the job at same time. Is
> that because of MPI problem?
> Thanks,
>
> Shuchi
>
> On Wed, Nov 26, 2014 at 9:50 AM, Junchao Zhang <jczhang at mcs.anl.gov>
> wrote:
>
>> You can copy MPI libraries installed on the Ubuntu machine to the Suse
>> machine, then add that path to LD_LIBRARY_PATH on the Suse.
>>
>> --Junchao Zhang
>>
>> On Wed, Nov 26, 2014 at 9:55 AM, Shuchi Yang <yang.shuchi at gmail.com>
>> wrote:
>>
>>> I met some problem.
>>> The question is that
>>> I compile a fortran code at ubuntu, but I need run the code at Suse
>>> Linux, I was always told
>>> *    error while loading shared libraries: libmpifort.so.12: cannot open
>>> shared object file: No such file or directory*
>>>
>>> Furthermore, will this be a problem, I mean, if I compile the code with
>>> mpich-gcc and run the code at another type of Linux?
>>>
>>> Thanks,
>>>
>>> Shuchi
>>>
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