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Subject: [OMPI users] Infiniband requirements
From: Jim Kress (jimkress_58_at_[hidden])
Date: 2009-06-25 12:53:54


Is it correct to assume that, when one is configuring openmpi v1.3.2 and if
one leaves out the

--with-openib=/dir

from the ./configure command line, that InfiniBand support will NOT be built
into openmpi v1.3.2? Then, if an Ethernet network is present that connects
all the nodes, openmpi will use that network?

Also, is it required to add

--enable-static

to the ./configure command line to make sure Infiniband support is
available?
If I do not then the ompi_info --config command yields

Wrapper extra LIBS: -ldl -Wl,--export-dynamic -lnsl -lutil -lm -ldl

Note the absence of -lrdmacm and -libverbs which, I am told, are essential
for Infiniband support.

Whereas if --enable-static IS included, the ompi_info --config command
yields

Wrapper extra LIBS: -lrdmacm -libverbs -ldl -Wl,--export-dynamic -lnsl
-lutil -lm -ldl

And -lrdmacm and -libverbs are now present.

Thanks for your help.

Jim