I see, thanks a lot!
Jiayuan
----- Original Message -----
From: Geoffrey Blake
To: 'M5 users mailing list'
Sent: 2007年12月13日 11:15 AM
Subject: RE: [m5-users] what's UpgradeReq for?
As UpgradeReq is used when a cache wants to transistion its shared line to
modified. An UpgradeReq will force the other caches to invalidate in this
case, so no response is sent. Using a ReadExReq would get you the same result,
but would cause the previous owner of the line to send a response with the
data. So an Upgrade is an optimization to reduce interconnect traffic.
Geoff
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jiayuan
Sent: Wednesday, December 12, 2007 10:00 PM
To: 'M5 users mailing list'
Subject: [m5-users] what's UpgradeReq for?
Hey all,
I was trying to modify the memory system to allow multiple responses for
interconnection modeling (in SE mode). However, it came to a “limit reached”
(running out of events).
The last packet that my interconnection dealt with is an UpgradeReq, which
doesn’t trigger any responses. However, I’m not able to tell what it does. Can
some one shed light on it?
Thanks!
Jiayuan
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