[ofiwg] Question about endpoints and passive endpoints

[Graham, Nathaniel Richard]

Hello,


I have been working on a project to get some performance numbers for libfabric when run with Java bindings and have gotten to a point where I need to understand how the different end points are related, and what functionality they share.  I am primarily interested in plain endpoints, and passive endpoints.


>From what I can tell from fi_endpoint.h and fi_cm.h, fid_pep and fid_ep share the method groups fi_ops_ep and fi_ops_cm.  It appears that in those methods, if fid_t is used, any endpoint can be used and if fid_pep is used, a passive endpoint must be used.


If fid_ep is used, could a passive endpoint use it, or does it have to be a normal endpoint?


Ive also noticed in methods like rx_ctx there are variables such as: fid_ep *sep.  Does this indicate only a scalable endpoint should be used?


Thanks for any clarifications!


-Nathan

--
Nathaniel Graham
HPC-DES
Los Alamos National Laboratory
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