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Protocol Versions
Jianxin Xiong edited this page Mar 6, 2024
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1 revision
Provider protocols are versioned so that runtime check can be performed to see if the wire protocol used by multiple instances of the same provider are compatible. The protocol name and version are specified in struct fi_ep_attr.
The following table lists the protocol version history of some providers:
| provider | EP type | protocol | protocol version | libfabric versions |
|---|---|---|---|---|
| shm | RDM | FI_PROTO_SHM | 1 | since 1.6 |
| tcp | MSG | FI_PROTO_SOCK_TCP | 0 | since 1.6 |
| tcp | RDM | FI_PROTO_XNET | 1 | since 1.18 |
| rxm/tcp | RDM | FI_PROTO_RXM | 1 | since 1.6 |
| rxm/tcp | RDM | FI_PROTO_RXM_TCP | 1 | since 1.15 |
| verbs | MSG | FI_PROTO_UNSPEC | 1 | since 1.1 |
| verbs | MSG | FI_PROTO_RDMA_CM_IB_RC | 1 | since 1.1 |
| verbs | MSG | FI_PROTO_RDMA_CM_IB_XRC | 1 | since 1.7 |
| verbs | MSG | FI_PROTO_RDMA_CM_IWARP | 1 | since 1.1 |
| verbs | DGRAM | FI_PROTO_IB_UD | 1 | since 1.1 |
| verbs | RDM | FI_PROTO_IB_RDM | 1 | 1.2 ~ 1.6 |
| verbs | RDM | FI_PROTO_IWARP_RDM | 1 | 1.2 ~ 1.6 |
| rxm/verbs | RDM | FI_PROTO_RXM | 1 | since 1.4 |