Description of problem:
libpsm_infinipath.so.1 from infinipath-psm provides the PSM API to use TrueScale devices.
libpsm2.so.2 from libpsm2 provides the PSM2 API to use OmniPath devices.

The two APIs clash with each other when a process links to both libraries.
For instance, both libraries provide a function called "psm_init".

Version-Release number of selected component (if applicable):
libpsm2-0.7-3.el7.x86_64
infinipath-psm-3.3-0.g6f42cdb1bb8.2.el7.x86_64

How reproducible:
always

Steps to Reproduce:
1. tar -xvf test-psm-conflict.tar.gz && cd test-psm-conflict && make
2. ./test

Actual results:
./plugin0.so initialized
PSM loaded an unexpected/unsupported version (2.0)
./plugin1.so initialization failed


Expected results:
./plugin0.so initialized
./plugin1.so initialized

(The expected result would appear if the implemented solution unified the two libraries into one, usable for both TrueScale and OmniPath.
A different solution may be an new non-conflicting API for PSM2, in which case the test program would need changes to work.)

Additional info:
This affects openmpi. A workaround has been put in place in openmpi to avoid loading both PSM libraries at the same time.
I will reference this BZ from openmpi's config file with the workaround, so I do not wish to mark the BZ private.