The ABINIT Users Mailing List ( CLOSED )

[Anglade Pierre-Matthieu <anglade@gmail.com>]

I guess that usually mpi libs don't use shared memory because it would
require machine dependant writing. Moreover I don't know of any mpi
functions which make use of shared memory.(they mostly copy/move
data).  That's why you can guess that mpich don't use it. But you can
have a look at there site if you wan't to be sure.

Would they tell that they use share memory you may then be able to
disable it by compiling your own mpi libs with appropriate options at
compilation time.

under most unices, the command whereis help you locate a file.
for instance:
"whereis libmpi"
or "whereis libmpich"
If you can't find them this way you may wan't to try to find them manualy.
For instance
"find / -name '*mpi*' " (this will take a pretty long time on some
system but you'll get all the files having mpi in their names'
alternatively, for instance, use
"find / -name '*mpi*.so'" or
"find / -name '*mpi*.a'"

As mpi usually come with a manpage you might also get some useful
information from the "man libmpi" page.




On 11/4/05, ilukacevic@fizika.unios.hr <ilukacevic@fizika.unios.hr> wrote:
> Thank You for Your fast answer
>
> There was a correction...I would like to disable it.
>
> If that is so, how can I find out if my mpi lib uses shared memory and if 
> it does how can I change that? Also, how can I find out where my mpi lib is 
> located?
>
>
> Thank You in advance
>
> I. Lukacevic
>



--
Pierre-Matthieu Anglade
"