I also have question whether -icount 0 or -icount auto can make a simulation more deterministic and whether qemu is affected by the load on the host (i.e. how many processes are running?) I would be grateful for a reply. Thanks and Regards Sparsh Mittal
On Thu, Dec 8, 2011 at 8:36 AM, sparsh mittal <sparsh0mit...@gmail.com>wrote: > > > > > On Thu, Dec 8, 2011 at 8:18 AM, Stefan Hajnoczi <stefa...@gmail.com>wrote: > >> On Thu, Dec 8, 2011 at 1:57 PM, sparsh mittal <sparsh0mit...@gmail.com> >> wrote: >> > I am using qemu as a part of Marss cycle-accurate simulator. >> > http://marss86.org/~marss86/index.php/Home >> > >> > $ qemu/qemu-system-x86_64 -m 4G -snapshot -loadvm ffnn -vnc :3 -icount 0 >> > -drive cache=unsafe,file=/local/sparsh/specimage_sftn3.qcow2 -simconfig >> > MyConfigs/ffnn_100M.cfg >> >> I wonder if the image loads in vanilla QEMU. Try dropping the -icount >> 0 and -simconfig options just to see whether vanilla QEMU gets the >> same error or not. >> >> I have tried dropping all these: snapshot, icount, vnc, cache=unsafe, but > still the error comes. I deleted this checkpoint and made another one (with > different name, but same benchmarks), still error comes. > I will also ask marss-forum. > Surprisingly, with other checkpoints, error does not come. > > >> Also, have you asked on the Marss mailing list? Please try that first >> because the bug may be due to changes that were made to vanilla QEMU. >> https://www.cs.binghamton.edu/mailman/listinfo/marss86-devel >> >> Stefan >> > >
