Hi Brad,
On Thu, 3 Feb 2011, Beckmann, Brad wrote:
Hi Nilay,
Yes, you could make such an optimization, but you want to be careful not
to introduce starvation. You want to make sure that newly arriving
messages are not always prioritized over previously stalled messages.
Could you avoid looping through all message buffers by creating a list
of ready messages and simply scanning that instead? You still want to
store the messages in the message buffers because they model the virtual
channel storage. However, the list can be what the wakeup function
actually scans.
I think we should maintain a MessageBuffer with in the PerfectSwitch which
would be scanned on wakeup. That way priorities of messages can be taken
care of in the same fashion as currently done in message buffers. We would
also need to store in the message the identity of message buffer (link,
virtual network) it actually belongs to. This would required for popping
the message when it gets routed.
--
Nilay
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