Hi Nilay, I'll have a look at the DRAM controller. As you mention, the switching regressions do not seem to have any issues. Did you get any further in isolating the problem?
Thanks, Andreas On 06/06/2013 05:01, "Nilay Vaish" <[email protected]> wrote: >No, this is not the bug we are looking for. I just figured how the drain >functionality works. > >-- >Nilay > >On Wed, 5 Jun 2013, Joel Hestness wrote: > >> Hey Nilay, >> I haven't experienced this bug, but it may be the same one that Mahshid >> (cc'd: [email protected]) is experiencing with her trouble >>restoring >> a checkpoint with a large-scale CMP (in this thread: >> http://www.mail-archive.com/[email protected]/msg07639.html). If she >> happens to still have that checkpoint, she might be able to test whether >> her system sees the same draining bug. >> >> Joel >> >> >> On Wed, Jun 5, 2013 at 5:51 PM, Nilay Vaish <[email protected]> wrote: >> >>> I am trying to debug some issue with switching of cpus in a >>>multiprocessor >>> system. While trying to drain the system, there is a call to >>>simulate() ins >>> function _drain() that seemingly gets stuck. To me it seems that it >>>should >>> return when the main event queue becomes empty. But simple DRAM keeps >>>on >>> posting its refresh event. It seems that once the DRAM has moved to >>>drained >>> / draining state, it should not post the refresh event. >>> >>> Can some one confirm that this is a bug in Simple DRAM? Given that >>>there >>> are switch cpu regressions that we run every week, it is hard to >>>believe >>> that Simple DRAM has a bug in its drain functionality. But I have not >>>been >>> able to come up with an alternate explanation either. >>> >>> Thanks >>> Nilay >>> ______________________________**_________________ >>> gem5-dev mailing list >>> [email protected] >>> >>>http://m5sim.org/mailman/**listinfo/gem5-dev<http://m5sim.org/mailman/li >>>stinfo/gem5-dev> >>> >> >> >> >> -- >> Joel Hestness >> PhD Student, Computer Architecture >> Dept. of Computer Science, University of Wisconsin - Madison >> http://pages.cs.wisc.edu/~hestness/ >> _______________________________________________ >> gem5-dev mailing list >> [email protected] >> http://m5sim.org/mailman/listinfo/gem5-dev >> >_______________________________________________ >gem5-dev mailing list >[email protected] >http://m5sim.org/mailman/listinfo/gem5-dev > -- IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you. _______________________________________________ gem5-dev mailing list [email protected] http://m5sim.org/mailman/listinfo/gem5-dev
