Message Ordering from Kernel SCIF APIs

Wendy__C_ — Thu, 28 Mar 2013 16:35:28 GMT

We're working on Kernel Mode applications on MIC. It is not clear from the document whether SCIF send/recv APIs guarantee message ordering; that is: Say .. On host side: two threads send messages via scif_send() in sequential order (controlled by lock)

If the card side has only one recv thread, will scif_recv() received the two messages in the order of sends ? Will the messages interleave ?

Thanks,

Wendy

Yes, scif_recv will receive

Wei_W_2 — Fri, 29 Mar 2013 01:08:51 GMT

Yes, scif_recv will receive the message in the order of send. Actually, if you set scif_send as blocked send, the thread will be blocked until the message is received by scif_recv, so your next scif_send would be executed only after your first send.

topic Message Ordering from Kernel SCIF APIs in Software Archive

Message Ordering from Kernel SCIF APIs

Yes, scif_recv will receive