Hello Ali thanks for the answer, you were right was an M5 bug, I was using a
little bit old version of M5 I updated and the error was gone. I was testing
DRAMsim and checkpoints and they do not work.
By the way does fastforwarding work in FS?.
Thanks a lot for the answers.
> From: [email protected]
> To: [email protected]
> Date: Wed, 18 Feb 2009 22:42:35 -0500
> Subject: Re: [m5-users] [PATCH] Beta patch for M5 2.0 DRAMsim implemention
>
>
> On Feb 18, 2009, at 9:01 PM, nathan binkert wrote:
>
> >> Hmm...it is derived from PhysicalMemory, so from that viewpoint all
> >> it
> >> needs is to be rebuilt using the same parameters and have the
> >> underlying PhysicalMemory data restored correctly. If PhysicalMemory
> >> currently works with checkpointing, I am unclear what in my DRAMsim
> >> code prevents it from working, since I do not override either
> >> serialize or unserialize. Any ideas on what to look for?
> >
> > Well, the error isn't with serialize/unserialize actually, it's with
> > the drain code that forces the memory system to drain all in flight
> > requests. We do the drain before we take a checkpoint to make sure we
> > don't lose any data.
> It's possible that it's not a bug with DRAMsim, but rather some other
> issue with M5. What other components are you simulating? Do you have a
> NIC in the simulation? I know that over the last few months I've fixed
> one or two checkpointing bugs with the Intel NIC model. A good start
> to understanding the problem is printing out the value of getCount()
> before that assert occurs. A value less than 0 means that some object
> called process() on it's drainEvent more than it should have. I don't
> think a positive value is possible.
>
> Ali
>
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