Method and system for an on-chip completion cache for optimized completion building

A host communication adapter (HCA) comprising:

• transmitting processing logic configured to:
• transmit a work request issued by a software application executing on a host operatively connected to the HCA;
• and
• cache a portion of the work request in a completion cache, wherein the cached portion of the work request comprises information for building a completion for the work request;
• responder processing logic configured to:
• receive the work request from the transmitting processing logic;
• and
• generate a response to the work request;
• and
• a completion module configured to:
• receive the response to the work request from the responder processing logic;
• and
• build the completion for the work request, wherein the completion informs the software application of at least a status of the work request as executed by the HCA.

A system, comprising:

• a host executing a software application, wherein the software application is configured to issue a work request;
• and
• a host communication adapter (HCA) operatively connected to the host and configured to:
• receive the work request;
• cache a portion of the work request in a completion cache in the HCA, wherein the cached portion of the work request comprises information for building a completion for the work request;
• process the work request and generate a response to the work request;
• and
• build the completion for the work request using the cached portion of the work request, wherein the completion informs the software application of at least a status of the work request as executed by the HCA.