Hello,
I would like to build OMPI V1.4.2 and make it available to our users at the
Supercomputing Center at TAMU. Our system is a 2-socket, 4-core Nehalem
@2.8GHz, 24GiB DRAM / node, 324 nodes connected to 4xQDR Voltaire fabric,
CentOS/RHEL 5.4.
I have been trying to find the following information :
1) high-resolution timers: how do I specify the HRT linux timers in the
--with-timer=TYPE
line of ./configure ?
2) I have installed blcr V0.8.2 but when I try to built OMPI and I point to the
full installation it complains it cannot find it. Note that I build BLCR with
GCC but I am building OMPI with Intel compilers (V11.1)
3) Does OMPI by default use SHM for intra-node message IPC but revert to IB for
inter-node ?
4) How could I select the high-speed transport, say DAPL or OFED IB verbs ? Is
there any preference as to the specific high-speed transport over QDR IB?
5) When we launch MPI jobs via PBS/TORQUE do we have control on the task and
thread placement on nodes/cores ?
6) Can we suspend/restart cleanly OMPI jobs with the above scheduler ? Any
caveats on suspension / resumption of OMPI jobs ?
7) Do you have any performance data comparing OMPI vs say MVAPICVHv2 and
IntelMPI ? This is not a political issue since I am groing to be providing all
these MPI stacks to our users.
Thank you so much for the great s/w ...
best
Michael
% -------------------------------------------------------------------- \
% Michael E. Thomadakis, Ph.D. Senior Lead Supercomputer Engineer/Res \
% E-mail: miket AT tamu DOT edu Texas A&M University \
% web: http://alphamike.tamu.edu Supercomputing Center \
% Voice: 979-862-3931 Teague Research Center, 104B \
% FAX: 979-847-8643 College Station, TX 77843, USA \
% -------------------------------------------------------------------- \
