发明名称 |
REDUCING NUMBER OF WRITE OPERATIONS RELATIVE TO DELIVERY OF OUT-OF-ORDER RDMA SEND MESSAGES |
摘要 |
<p>An RNIC implementation that performs direct data placement to memory where all segments of a particular connection are aligned, or moves data through reassembly buffers where all segments of a particular connection are non-aligned. The type of connection that cuts-through without accessing the reassembly buffers is referred to as a "Fast" connection because it is highly likely to be aligned, while the other type is referred to as a "Slow" connection. When a consumer establishes a connection, it specifies a connection type. The connection type can change from Fast to Slow and back. The invention reduces memory bandwidth, latency, error recovery using TCP retransmit and provides for a "graceful recovery" from an empty receive queue. The implementation also may conduct CRC validation for a majority of inbound DDP segments in the Fast connection before sending a TCP acknowledgement (Ack) confirming segment reception.</p> |
申请公布号 |
EP1692582(B1) |
申请公布日期 |
2012.07.11 |
申请号 |
EP20040813117 |
申请日期 |
2004.12.07 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
BIRAN, GIORA;MACHULSKY, ZORIK;MAKHERVAKS, VADIM |
分类号 |
G06F13/00;G06F15/167;H04L29/06;H04L29/08 |
主分类号 |
G06F13/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|