1
1
Spruit, Neil R 7dc8c8ba3f MTL OFI: send/isend split into blocking/non-blocking paths
-Updated blocking send to directly call functionality and
set completion events expected to 0 initally. This allows for optimization for
providers that support fi_tinject up to larger sizes. This also reduces
latency on running the OFI mtl with smaller sizes without requiring
calls to progress given fi_tinject is required to complete the messaging
before returning and will not create any events in the Completion Queue.

-Updated non-blocking send to directly call fi_tsend and avoid calling
fi_tinject as the functionality should not wait on completions. This
resolves a bug where applications calling MPI_Isend can overrun the
TX buffer with small (inject) messages causing a deadlock. In addition
this improves performance in message rates by preventing
waiting on any size message to complete in non-blocking send messages.

-Created common ompi_mtl_ofi_ssend_recv function to post the ssend recv
which is common between isend and send code paths.

Signed-off-by: Spruit, Neil R <neil.r.spruit@intel.com>
2018-07-24 07:54:24 -07:00
..
2018-06-14 09:41:10 +09:00
2018-07-19 12:39:15 +03:00
2018-06-06 12:18:52 -07:00