As I recall there was some known reason why it wouldn't work - I remember us saying at a tutorial that "in theory" you could do something SMARTS-like but that we didn't have the capability to return back to an old cpu yet. I don't remember what the reason was, I was assuming Kevin would remember....Kevin?
Lisa On Tue, Nov 4, 2008 at 11:53 AM, Steve Reinhardt <[EMAIL PROTECTED]> wrote: > As far as I know there's no reason why switching back to the original > CPU shouldn't work. If it's not working I'd say that's a bug. If the > symptom is that nothing happens, it sounds like the tick events on the > CPUs aren't getting scheduled, or maybe the thread context is not > properly transitioning to the active state. The first thing I'd check > is what state the thread context of an old CPU is left in after you do > a takeOverFrom() on it... if that's not the same state as a newly > created idle CPU then that's probably at least part of the problem. > > Steve > > On Mon, Nov 3, 2008 at 2:18 PM, Clint Smullen <[EMAIL PROTECTED]> > wrote: > > I ran a test that tried to switch back to a a set of timing simple > > CPUs after running with the O3 cpus for a while, but the simulator > > just goes off into space. Using a fresh set of simple CPUs solves the > > problem, but I was curious if someone might know of an inherent reason > > why switching back did not work. If a user wanted to switch back and > > forth multiple times (perhaps executing a set of simpoints with O3, > > and the rest with simple timing to get accurate cache modeling), > > having to have all new sets of cores for each part would be annoying > > (though still doable). For a scheme where the switching is more > > dynamic, this solution would not be feasible. > > > > - Clint Smullen > > _______________________________________________ > > m5-users mailing list > > [email protected] > > http://m5sim.org/cgi-bin/mailman/listinfo/m5-users > > > _______________________________________________ > m5-users mailing list > [email protected] > http://m5sim.org/cgi-bin/mailman/listinfo/m5-users > >
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