[Pympi-users] E-cell and parallel pympi extensions

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Sorry for the delay in replying. Pat Miller is better qualified to
answer this question, but I will try to outline the answer. 
 
pympi is itself a special version of the python interpreter that is mpi
aware. Most users are specifically using pympi, because it allows them
to AVOID having to write parallel programs in a low level language like
C. 
 
pympi is mpi aware, because it initialises the MPI processes at
startup. You access them through the loading of the mpi module with
this statement: 
&gt;&gt;&gt; import mpi 
 
There is an example of the other approach, where the mpi calls are made
in a compiled module here: 
 
<a class="moz-txt-link-freetext" href="http://pympi.sourceforge.net/examples.html">http://pympi.sourceforge.net/examples.html</a> 
 
See the simple extension example. This is actually a python extension
that also includes mpi calls using the MPI C api directly without going
through python, for instance it uses the C api to get it's own rank: 
 
<pre>MPI_Comm_rank(MPI_COMM_WORLD,&amp;rank);

</pre>
I have not used the C api myself from pympi, for the reasons I stated
at the beginning:<br>
<br>
regards<br>
<br>
Julian Cook<br>
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