8f1a44e60e
Background: In order to support atomics each btl needs to provide support for communicating with self unless the btl module can guarantee global atomicity. Before this commit bml/r2 discarded any BTL with lower exclusivity than an existing send btl. This would cause the BML to discard any btl other than self. The new behavior is as follows: - If an exisiting send btl has higher exclusivity then the btl will not be added to the send btl list for the endpoint. - If a btl provides RDMA support then it is always added to the rdma btl list. - bml_btl weight for send btls is now calculated across all send btls. - bml_btl weight for rdma btls is now calculated across all rdma btls. With this change self should still win as the only send btl for loopback without disqualifying other btls (ugni, openib) for atomic operations. |
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| .. | ||
| base | ||
| r2 | ||
| bml.h | ||
| Makefile.am | ||