On Wed, 2006-08-23 at 14:00 -0500, Tang, Changqing wrote: > Thanks for all your replies. So my general question is, why only 4bytes > immediate data can > Generate completion event on B side, Why RDMA-write with any data size > does not generate > A completion event on B side? basic there are the same thing, the only > different is, one > Copy 4bytes to completion structure, the other copy all data to provided > dest buffer. > > --CQ
This is just the way IB was defined. Both RDMA write and RDMA write with immediate transfer up to 2 Gigabytes of data to the destination address. The latter just signals node B that the operation is complete and the former doesn't. Node B can use the immediate data as a hint to which RDMA operation just completed. _______________________________________________ openib-general mailing list [email protected] http://openib.org/mailman/listinfo/openib-general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
