[ofiwg] [libfabric-users] sockets provider, number of outstanding reads

[Hefty, Sean]

Copying ofiwg

> Tests are usually added to the fabtests repo -
> https://github.com/ofiwg/fabtests.git.
> 
> Although the reproducer is a little too complicated for fabtests (because
> of the MPI dependency), it will be good to have a trimmed down version of
> the test in fabtests.

Maybe fabtests could provide very simple implementations for a couple of the MPI calls that would be helpful in implementing these tests -- such as barrier.  The implementation could just be over sockets.

Would this be enough though?

- Sean