Tag Matching

Tag Matching and Rendezvous Offload is a technology employed by NVIDIA to offload the processing of MPI messages from the host machine onto the network card. Employing this technology enables a zero copy of MPI messages, i.e. messages are scattered directly to the user’s buffer without intermediate buffering and copies. It also provides a complete rendezvous progress by NVIDIA devices. Such overlap capability enables the CPU to perform the application’s computational tasks while the remote data is gathered by the adapter.

ibv_exp_create_dct

• IB_EXP_SRQT_TAG_MATCHING

• MLX5_DCTC_OFFLOAD_TYPE_RNDV

• IBV_EXP_DEVICE_ATTR_TM_CAPS

• IBV_EXP_TM_CAP_DC