Charm++ parallel programming system

["Bennion, Brian" <Bennion1 AT llnl.gov>]

Hello,

Compilation of all the suggested versions of charm++ have been completed.
They were:
mpi-linux-x86_64
mpi-linux-x86_64 smp
net-linux-x86_64 ivberbs
net-linux-x86_64 ibverbs smp

It appears that the first charmm build is the best for namd2.8.  I saw a 25% 
speedup on my regular jobs using the same processor counts.  No extra tricks 
were employed in compiling charm++ or namd2.8.

The ibverbs version did compile for charm++ and namd2.8 and was even able to 
start.  however, sockets closed prematurely on some node and the whole things 
burns to the ground.

Two quick thoughts here.  First, looking at the charm.XXXXX files that are 
created, they look for some /tmp/charm.XXXX directories that are not going to 
be available.  The tmp filesystem goes by username it /tmp/bennion1/XXXXX
Second, I will check with our admins to see if using ib layer is even 
permissible.

Brian