[ewg] how to use Intel MPI with dapl2?

[Scott Weitzenkamp (sweitzen)]

I am using Intel MPI 3.1 build 26 with OFED 1.3 beta2 on RHEL4 x86_64.
Intel MPI works as before with dapl1, but I see very slow performance
with dapl2.  Are there extra command-line params I need to use dapl2?
 
For example:
 
$ /data/software/qa/MPI/intel_mpi/intelmpi-3.1-`uname -m`/bin/mpiexec
-genv I_MPI_DEBUG 3 -n 2  osu_latency.x
[1] MPI startup(): DAPL provider <NULL on rank 0:svbu-qa1850-1 differs
from <NUL
L string> on rank 1:svbu-qa1850-2
[0] MPI startup(): socket data transfer mode
[0] MPI Startup(): process is pinned to CPU00 on node svbu-qa1850-1
[1] MPI startup(): socket data transfer mode
[1] MPI Startup(): process is pinned to CPU00 on node svbu-qa1850-2
[0] Rank    Pid     Node name
[0] 0       9605    svbu-qa1850-1
[0] 1       8547    svbu-qa1850-2
# OSU MPI Latency Test (Version 2.1)
# Size          Latency (us)
0               124.96
1               124.98
2               99.62
4               63.04
8               62.98

 
Scott Weitzenkamp
SQA and Release Manager
Server Virtualization Business Unit
Cisco Systems

 
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