Re: [mpi-21] ABI - call for working group

[Greg Lindahl <lindahl@xxxxxxx>]

On Sun, Jan 13, 2008 at 01:37:50PM -0800, Greg Bronevetsky wrote:

> Is it actually necessary for the user to compile the morph layer for 
> their own MPI? It should be possible to write a morph layer that gets 
> automatically compiled for any MPI you throw at

... on diskless cluster nodes with no compiler installed? This is
incompatible with the way lots of clusters are administered. And when
it broke, it would probably be not very user-friendly to fix.

> Also, if morph layers are used, what would it mean to have an
> unqualified MPI?

It means the combination was never tested. Commercial vendors of
MPI-using programs generally don't support something they haven't
tested.

-- greg