@hackage haskell-mpi1.4.0

Distributed parallel programming in Haskell using MPI.

Haskell-mpi, Haskell bindings to the MPI library

How to build

Use "cabal install --extra-include-dirs=/path/to/mpi/headers --extra-lib-dirs=/path/to/mpi/libs" or something similar. Make sure that you have libmpi.a and libmpi.so available.

When building against MPICH 1.4, pass extra flag "-fmpich14"

Testing

Two types of tests are provided:

  1. Unit tests.
  2. Standalone tests.

The unit tests are designed to test the functions exported by the library on an individual basis. The standalone tests are comprised of complete programs - they act as simple integration tests, and may also include regression tests.

How to enable testing

Add "-ftest" to cabal install:

cabal -ftest install

How to run the unit tests

(Assuming you have built haskell-mpi with -ftest, as described above):

Run the program "haskell-mpi-testsuite" using "mpirun" like so:

mpirun -np 2 haskell-mpi-testsuite 1>sender.log 2>receiver.log

Process with rank 0 emits the output to stdout, and every other rank reports to the stderr.

If you are using the PBS batch system to launch jobs, there is a sample job script in test/pbs/ for submitting the test case to the jobs queue.

How to run standalone tests

Standalone test programs can be found in the test/examples directory. You can test the execution of these programs using the shelltestrunner package:

http://hackage.haskell.org/package/shelltestrunner

Make sure you install shelltestrunner first, for example:

cabal install shelltestrunner

To run the tests, issue this command:

shelltest --execdir test/examples/

Bindings-MPI is distributed as open source software under the terms of the BSD License (see the file LICENSE in the top directory).

Author(s): Bernie Pope, Dmitry Astapov. Copyright 2010.

Contact information

Email Bernie Pope:

florbitous gmail com

History

Around the year 2000 Michael Weber released hMPI, a Haskell binding to MPI:

http://www.foldr.org/~michaelw/hmpi/

Development on that code appears to have stopped in about the year 2001. Hal Daumé III picked up the code and got it working with (at the time) a more recent version of GHC:

http://www.umiacs.umd.edu/~hal/software.html

In February 2010 both Michael and Hal reported that they had not worked on the code for a long time, so it was open for new maintainers.

In early 2010 Bernie Pope downloaded the above mentioned versions of hMPI and tried to get them working with a modern GHC.

A few things had changed in Haskell since hMPI was written, which suggested that it might be worth starting the binding from scratch. In particular the FFI had changed in a few ways, the C2HS tool had matured substantially, and good quality serialization libraries had emerged. So while haskell-mpi is highly inspired by hMPI (which was very good code), it is almost entirely a rewrite.

Haskell-mpi got its first main injection of effort during the inaugural AusHac Australian Haskell Hackathon, hosted at UNSW from the 16th to the 18th of July 2010. The end result was a proof of concept.

The next major injection of effort happened when Dmitry Astapov started contributing to the project in August 2010.

Contributions have also been made by:

  • Abhishek Kulkarni: support for MPI-2 intercommunicator client/server functions
  • Andres Löh: bug fixes
  • Ian Ross: updated the code to work with newer C2HS.