Additionally, in FS mode if you're running benchmarks with very large memory footprints, you can mount a swap space disk to make the system more realistic (as opposed to exorbitant amounts of simulated memory). Before running the benchmark, just run: % /sbin/swapon /dev/hdc
Joel On Wed, Oct 13, 2010 at 3:20 PM, Steve Reinhardt <[email protected]> wrote: > There are bugs in the O3 model such that restoring directly from a > checkpoint into O3 doesn't work. That's why the standard-switch model > exists. I don't think it has anything to do with the memory size. > > Steve > > On Wed, Oct 13, 2010 at 11:54 AM, Lide Duan <[email protected]> wrote: > > Hi, > > > > I noticed that the default memory size set in Benchmarks.py is 128MB, > isn't > > it too small for reasonable simulations? > > > > Previously when I was using ALPHA_SE, the physmem is set to "2GB", and > the > > simulation ran well. In FS mode, however, if 2GB is used, booting up > Linux > > (with atomic CPU) becomes extremely slow; if 1GB or 512MB is used, I can > > boot up the OS, start the program and make a checkpoint successfully. > > However, restoring from the checkpoint directly with detailed CPU > > (--detailed) gives me "segmentation fault", the interesting thing is: if > I > > restore the checkpoint with atomic CPU and then switch to timing and > > detailed ones (--standard-switch), the simulation runs well. For the > default > > value 128MB, both --detailed and --standard-switch can run. I am confused > by > > this observation. Am I missing anything here? What is a reasonable memory > > size in FS mode (say, for PARSEC programs)? > > > > Thanks, > > Lide > > > > _______________________________________________ > > 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 > -- Joel Hestness PhD Student, Computer Architecture Dept. of Computer Science, University of Texas - Austin http://www.cs.utexas.edu/~hestness
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