The problem is that, when running HPL, he sees failed residuals. When
running HPL under MPICH-GM, he does not.
I have tried running HPCC (HPL plus other benchmarks) using OMPI with
GM on 32-bit Xeons and 64-bit Opterons. I do not see any failed
residuals. I am trying to get access to a couple of OSX machines to
replicate Brock's setup.
I wonder if we can narrow this down a bit to perhaps a PML protocol
issue.
Start by disabling RDMA by using:
-mca btl_gm_flags 1
Let's see if that helps things out at all.
- Galen
Scott
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