High performance computing center RDMA implementation technology

Catalog

RDMA Basic communication flow of

RDMA Support the following 4 Communication operation ：

1. SEND/RECV：SEND The operation allows data to be sent to a remote location OP Receive queue for . The receiver must publish a receive buffer before it can receive data . The sender cannot control the location of the data in the remote host .
2. WRITE/READ： The system will read a section of memory from the remote host . The caller specifies the remote virtual address and local memory address to copy to . In execution RDMA Before the operation , The meta process host must provide active permissions to access its memory . I set these permissions , Will execute RDMA Read operation &#x