[Developers] palallel processing with MPI

Derek Seiple dseiple84 at gmail.com
Sun Jul 3 09:58:04 PDT 2011

Good work Dave. I be able to look into this in more detail this coming week.


On Sun, Jul 3, 2011 at 8:55 AM, dave fournier <davef at otter-rsch.com> wrote:
> Hi lazy people!
> I have implemented parallel computation of the Hessian using open mpi.
> I did it with my old code base because I have it set up better for
> debugging.
> There are only a small number of file to change however. I attached a zip.
> The slaves write their part of the Hessian into their own temporary files
> with _slavenumber appended.  This will have to be done for all the temporary
> files
> since in the simple implementation  all processes are in the same directory.
> The main work is to write all the functions to pass autodif types back and
> forth.
> I have made a beginning.
> Onced you install openmpi the makefile needs to be modified to include
> the write compile flags for openmpi.   see the openmpi docs concerning
>  the mpicxx -showme:compile and -showme:link   options
> By extending this stuff a bit we shold be able to parallelize problems like
> Mollie's pond model
> to speed it up a lot (hopefully).
> Feedback would be welcome. I'm off hiking for 4 days tomorrow.
>            Dave
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