When I fix this issue with checkpoints not functioning with the CheckerCPU I'll be posting the diff for review.
But first I need some clarification on how simobjects are handled when working with checkpoints compared to a normal run of gem5. Geoff On Mon, Oct 31, 2011 at 9:56 PM, Gabriel Michael Black <[email protected]> wrote: > This is mostly tangential to your question, but if you're working on the > CheckerCPU, be sure to get your stuff into the repository. I consider the > CheckerCPU abandoned and rotting, and I'm making no particular effort to > keep it working since it doesn't work now anyway (at least as far as I > know). If you want to make sure it stays functional, get it working in the > dev repo and put together some sort of test. > > Gabe > > Quoting Geoffrey Blake <[email protected]>: > >> Hey all, >> >> I've been working on getting the CheckerCPU functioning for the ARM >> ISA to help with debugging a potential race condition in the O3 cpu. >> I have it working in both SE and FS modes when starting simulation >> from the beginning with the O3CPU. I'm now trying to get it fully >> functional with checkpoints since one of the test cases I need to >> debug is exposed when starting from a checkpoint. >> >> The problem I'm seeing I'd like some help with is when takeOverFrom() >> is called for switching from AtomicCPU to the O3CPU. The current >> problem I'm seeing is a segfault right after the call to switch CPUs >> due to the CheckerCPU not having all its ports created properly during >> the initial configuration or when python switches the atomicCPU for >> the O3CPU. >> >> My main question is how are objects created in gem5 when using >> checkpoints? Are all the simobjects created during the initial >> configuration and just switched with takeOverFrom()? Or are they >> created on demand, for example when the AtomicCPU is about to be >> switched out does gem5 then create the O3CPU to switch in? Since this >> seems to happen partly in C++ and partly in python I'm having trouble >> following the code. Any help would be useful in figuring out a >> solution on my end. >> >> Geoff >> _______________________________________________ >> gem5-users mailing list >> [email protected] >> http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users >> > > > _______________________________________________ > gem5-users mailing list > [email protected] > http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users > _______________________________________________ gem5-users mailing list [email protected] http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users
