[openib-general] scaling issues, was: uDAPL cma: add support for address and route retries, call disconnect when recving dreq

[Roland Dreier]

> > With 256 nodes all to all already gives you 65000 requests
> > which is the same order of magnitude as the reported 130000.

I think the only advantage of caching is if you start your app twice.

But maybe you can fill the cache more efficiently by doing a single
get table to find all the paths at once, rather than having to let the
cma query each path after arping for the GID...

 - R.