[Beowulf] emulating MPI?

Rusty Lusk lusk at mcs.anl.gov
Mon Jun 28 15:24:30 EDT 2004

Most MPI implementations, including ours (MPICH and MPICH2) have always
let you run as many application processes as you can stand on a single
node.  The MPI developers are developers too. :-)

Rusty Lusk

> On Mon, 28 Jun 2004, John Wohlbier wrote:
> > Hi,
> > I'm wondering if there is a way to emulate MPI,
> > so that MPI software development may be done on a single
> > processor box and run with "virtual nodes."
> Doesn't MPI let you vary the number of tasks independent of the actual
> host list?  Or do you mean something else?
>    rgb
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