[MPICH] heterogeneous cluster

[Philip Sydney Lavers]

Hello Irfan and folks,

>Thx Phil for the info :)
>
>What are the gotchas on getting it to work under risc
processors? If I 
>want to get mpich2 working on them.
>
>Any pointers on which code area I need to dig in :)
>
>Hmm btw bluegene/L seems to use powerpc cores for its
computation nodes 
>running mpi1x/mpi2x/mpichx? any one can confirm?
>
>Cheers,
>Irfan

I think I see where you are coming from - it seems that you
are faced with getting MPICH2 working on someone else's cluster.

I am surprised and a little concerned at Rajeev's advice that
 MPICH2 won't work on a heterogenous cluster. I used to have
accounts on AIX and SG machines and could have tried this out
- but no longer. I will install MPICH2 on a sparc 64 bit
machine that I have an account on and see if I can bring it
into the ring. I also may get access to a Mac G5. These things
will take time.

The reason that I have built my own clusters as funds permit
is that the very large cluster that is available to me is not
worth the haggle - if one requests too many nodes one goes to
 the end of a long queue. My ultimate aim is to use the
specialist application CRYSTAL03, but I do not have the
appetite to handle the third party in connection with licence
arrangements.

Sorry that I can't help in better detail

regards,

Phil Lavers