MOESI_CMP_directory uses "3-phase" writebacks. A control message is
issued (PUTX, PUTO) to the directory to order the writeback with other
request messages. The directory responds, and then the L2 controller
sends the data. This avoids a race in which the L2 sends the data while a
request is being forwarded to it.
--Mike
> I am working on MOESI_CMP_directory protocol
> (especially tweaking network message size and
> latency). I noticed that some of the data messages in
> L2Cache_Controller.C (b_issuePUTX, b_issuePUTO,
> b_issuePUT_ls) were consided as control messages that
> are 8 bytes. Arnt these messages are Data messages?
> Please let me know if I am missing any point.
> Thank you
> --naveen
>
>
>
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