> Once the processor has started to evict data from the WC buffer into system > memory, it will make a bus-transaction style decision based on how much of > the > buffer contains valid data. If the buffer is full (for example, all bytes are > valid) the processor will execute a burst-write transaction on the bus that > will result in all 32 bytes (P6 family processors) or 64 bytes (Pentium 4 and > Intel Xeon processor) being transmitted on the data bus in a single burst > transaction. If one or more of the WC bufferâs bytes are invalid (for > example, > have not been written by software) then the processor will transmit the data > to > memory using âpartial writeâ transactions (one chunk at a time, where a > âchunkâ > is 8 bytes).
OK, thanks. Do you have any idea how WC works on ppc? Is the lwsync instruction necessary/sufficient to flush WC buffers? - R. _______________________________________________ general mailing list [email protected] http://lists.openfabrics.org/cgi-bin/mailman/listinfo/general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
