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Ed Hill

I'm a Fedora Extras volunteer mostly interested in scientific computing, data acquisition and analysis, parallel computing and clusters, and related topics. I think Fedora is a good platform for these activities and would like to see it improve with the addition of more easy-to-use packages. For further discussion, please see the Fedora ["Extras/SIGs/SciTech"] .

Contact info:

Things I currently maintain include:

People I've sponsored:

  • KevinCole
  • RolandDreier
  • DawidGajownik
  • SergioPascual
  • SimonPerreault
  • GarrickStaples
  • MatthewTruch

Things that I'd like to improve are:

  • the availability of various C/C++/Fortran numerical libs
  • the MPI situation
  • overall, package more of the bits that I frequently use

Proposal for Improving MPI support in Fedora


People are increasingly using MPI to solve scientific and engineering problems. While its still a niche market, its steadily growing. Networks of workstations and small clusters have become quite common. And cheaper computers is only making it more common.


It would be nice to provide, through Fedora Extras, a few different MPI implementations which can be installed with a single command

yum install mpich2 openmpi ...

and then operate them side-by-side without worries about conflicts. In my opinion, there are no good reasons why Fedora users should be "stuck" with LAM and forced to fight with from-source builds for other MPI implementations. We easily can and therefor should do better!


On a large number sites (ranging from "supercomputing centers" right through through medium and small cluster installs), admins have adopted the "modules" or environment-modules software to easily and gracefully handle situations with multiple simultaneous installs of various compilers and/or libraries. The environment-modules system has proven itself to be a solid, general, workable, and extensible framework. While I don't suggest that Fedora (or even Fedora Extras) adopt environment-modules wholesale for all sorts of problems, the simultaneus installation of multiple MPI implementatons is a situation that just begs for an environment-modules solution.

The alternatives approach suggested by others is, in my opionion, clearly inferior to environment-modules since:

  • where does one put the man pages for each implementaton?
  • the alternatives setup is NOT easily extended to multiple different compilers
  • alternatives has the concept of one implementation being preferred to all others and this is unnecessary/pointless in the context of multiple MPI implemations

With the recent addition of environment-modules to Fedora Extras, I'd like to see it used to solve the current multiple-MPI-implementations deadlock.