This commit fixes a bug when using the UCT btl with the UCX memory
hooks disabled. We were misssing a call to
opal_mem_hooks_unregister_release to remove the btl memory hook
callback.
Signed-off-by: Nathan Hjelm <hjelmn@lanl.gov>
(cherry picked from commit 36c206d2d616578c97853d1d69727a1d6e165c1e)
Signed-off-by: Nathan Hjelm <hjelmn@lanl.gov>
This commit adds a new btl for one-sided and two-sided. This btl
uses the uct layer in OpenUCX. This btl makes use of multiple uct
contexts and per-thread device pinning to provide good performance
when using threads and osc/rdma. This btl has been tested extensively
with osc/rdma and passes all MTT tests on aries and IB hardware.
For now this new component disables itself but can be enabled by
setting the btl_ucx_transports MCA variable with a comma-delimited
list of supported memory domains/transport layers. For example:
--mca btl_uct_memory_domains ib/mlx5_0. The specific transports used
can be selected using --mca btl_uct_transports. The default is to use
any available transport.
Signed-off-by: Nathan Hjelm <hjelmn@lanl.gov>
