python support

[AJ Friend]

Hi,

I'm having trouble getting the python support to work. Here's the list of commands i'm running:

hg clone https://elemental.googlecode.com/hg elemental

mkdir build

cd build

cmake -D USE_SWIG=ON ..

make

sudo make install

Then, in the build directory, I open the python interpreter and type

import elem

but I get the error

ImportError: No module named elem

(Should I make sure to remove older installations of elemental in /usr/local, or will the installer automatically take care of that?)

Thanks,

AJ

[AJ Friend]

Ah, it looks like I need numpy 1.7. I'll try that.

AJ

[Jack Poulson]

Hi AJ,

The Python libraries aren't currently installed by CMake (though this would be easy to fix). You should be able to use the Python interface directly from the build directory for now.

Jack

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[AJ Friend]

Thanks. I've got it working now.

My next question: How would I get the python bindings working with
mpi? Is there a command similar to

mpirun -np 6 ./test

AJ

[Jack Poulson]

Yes, you can use exactly that command as long as test is a Python script which calls Elemental appropriately.

Jack

[Jack Poulson]

This is a good point.

As for interactive parallel sessions, I'm surprised that their isn't a modified Python interpreter which broadcasts each command from the root process.

Jack

On Wed, Jun 26, 2013 at 3:52 PM, Michael C. Grant <m...@cvxr.com> wrote:

Obviously that means you can't use MPI in an interactive session. But of course, you can always debug your DistMatrix code in single-processor mode; i.e., without mpirun.

[Jack Poulson]

It looks like it does. Good to know!

Jack

On Wed, Jun 26, 2013 at 3:56 PM, Michael C. Grant <m...@cvxr.com> wrote:

IPython might make this possible:

http://ipython.org/ipython-doc/dev/parallel/parallel_mpi.html