I still have one that has a DMA error, but this case has a modified M5 so I could likely be the cause. All the vanilla kernel and vanilla m5 runs check out.
Best, -Rick On Mon, Aug 22, 2011 at 4:54 PM, Ali Saidi <[email protected]> wrote: > Most? > > Ali > > On Aug 22, 2011, at 11:35 AM, Richard Strong wrote: > > Updating gem5 to the current version appears to have removed most of the > errors. Thanks for the tip. > > Best, > -Rick > > On Fri, Aug 19, 2011 at 3:33 PM, Ali Saidi <[email protected]> wrote: > >> Hi Rick, >> >> I just committed a fix that addresses an issue I found with newer kernels >> and our ide disk, but I haven't seen this one. It's possible that >> they're related, so you might want to try it. >> >> Ali >> >> >> >> >> On Fri, 19 Aug 2011 11:03:39 -0700, Richard Strong <[email protected]> >> wrote: >> >> Hi all, >> >> I was doing an experiment with the Berkeley DB benchmark ex_tpc. What I >> notice is that increasing the disk latency from 1us to 10us causes the >> following: panic in a vanilla kernel: >> >> panic: Inconsistent DMA transfer state: dmaState = 2 devState = 0 >> >> In addition, I notice that if I bind network and disk interrupts to a >> core, this error occurs in twice as many cases. The tested simulation >> featured two m5 default setting O3 cores (I have also seen the same DMA >> problem with simpler O3 models and the TimingSimpleCPU), the vanilla 2.6.27 >> m5 kernel and a 3 level cache (using the MESI express snoop protocol). I am >> currently running gem5-changeset:8339. >> >> I have also found this thread which seems to have a similar problem, but >> considers the x86 ISA and mentions that the APIC is the heart of the >> problem. >> >> http://www.mail-archive.com/[email protected]/msg03192.html >> >> If anyone happens to know how to fix the problem or efficient >> documentation on how Ide works, your thoughts and words would be greatly >> appreciated. >> >> Thanks, >> -Rick >> >> >> >> _______________________________________________ >> 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 >
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