Hi Jeff
I am glad this question was asked.
Thanks to whoever did it.
Acronyms are always a pain, particularly if you don't know them,
and they are in no dictionary.
OFUD, OFED, OPENIB, MCA, BTL, SM, OOB, ... the list goes on and on.
Your answer makes a great start for another FAQ entry,
called,
On Dec 2, 2010, at 3:59 AM, 阚圣哲 wrote:
> When I use openmpi mpirun --mca btl , I find arg1 can be ofud, self,
> sm, openib, but www.open-mpi.org desn't explain those args.
"BTL" stands for "byte transfer layer" -- is the lowest networking software
layer for the "ob1" MPI transport in Open MPI
