Date: | Fri, 11 Jul 2008 00:19:22 -0400 |
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From: | "wei wang" <apollo.mobility@xxxxxxxxx> |
Subject: | [Gems-users] What kind of state will be if the data is in IGS/IGM state and receives an INV message from dir? |
i spotted the following state transitions related to handling an INV message in MOESI_CMP_directory transition({IGM, IGS}, Inv) transition({I,NP}, Inv) transition(S, Inv, I) all the transitions will send an ACK message to global directory, which is simply ignored in the directory. While I -> I, NP -> NP and S->I set the data in one of the stable state, IGM -> IGM and IGS ->IGS will leave data in a transient states. Is this right? should we set IGM and IGS to I as well? thanks. |
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