System and method for explicit communication of messages between processes running on different nodes in a clustered multiprocessor system

A clustered multiprocessor system comprising:

• an OS-bypass message transport mechanism to communicate between processor nodes that execute a process on the system, wherein said mechanism includes
• a connection that includes a send side coupled to a source processor node and a receive side coupled to a destination processor node;
• a single per-connection memory buffer comprising an update buffer and an input buffer coupled respectively to the send side and the receive side of the connection by a respective switch/network adaptor interface;
• and
• dynamic common memory read and write pointers associated with the single per-connection memory buffer and each of the send side switch/network adaptor interface and the receive side switch/network adaptor interface wherein the send side and the receive side of the connection are decoupled from each other, and
• wherein the output data buffer is coupled between the source processor node and the per-connection memory buffer and the input data buffer is coupled between the per-connection memory buffer and the destination processor node, and
• wherein the per-connection memory buffer is dedicated to the process.

A method of transferring process data from a source processor node to a destination processor node that bypasses an operating system in a clustered multiprocessor system, said method comprising the steps of:

• allocating a single per-connection memory buffer comprising an input buffer and an output buffer accessible by the source processor node and the destination processor node via a respective switch/network adaptor interface;
• providing dynamic common memory read and write pointers associated with the single per-connection memory buffer and each of the source processor node switch/network adaptor interface and the destination processor node switch/network adaptor interface wherein the source processor node and the destination processor node of the connection are decoupled from each other;
• transferring the process data from the source processor node to the output data buffer on a send side;
• transferring the process data from the output data buffer to the input data buffer on a receive side;
• and
• processing the process data from the input data buffer using the destination processor node.