I've already noticed unstabilitty under load, but it was when using GPU (like flash or webgl). I've already built kdebase (took several hours) without any problem.
2011/8/19 Gordan Bobic <[email protected]>: > As some of you may have already heard on the IRC channel, I had my AC100 > suddenly become very unstable under load. When doing big compile jobs, the > compiler would relatively regularly segfault or detect hardware errors, or > errors it didn't think was hardware and invited me to post a bug report with > pre-processed C file. None of these were reproducible (it would error out in > a different place on different runs). So I figured I had duff hardware and > got another one. This is a lot better, but I still get spurious, > unreproducible errors like this every few hours (old one would error out up > to a few times/hour if it was being hammered with compiling jobs for a few > hours). Both of mine are the 10U models with Micron RAM. > > Now, either I am incredibly unlucky or something else is going on. What I > would like to know is: > 1) Do you use their AC100 for big compile jobs (e.g. the 2-day gcc compile)? > 2) If 1), are you seeing random errors like what I'm describing? > > On my old AC100, dropping the clock speed down to 700MHz using power > management features didn't make a difference to stability. I haven't tested > that on the new one. > > My gut feeling at the moment is that the RAM could be over-timed so I'm > going to try modifying the kernel code to relax the RAM timings by a notch. > > The only competing idea is that Tegra2 comes pre-overclocked past the stable > limits for 100% load for prolonged periods. This wouldn't surprise me either > (Nvidia chips have proven unreliable in the past even at their default clock > speeds, both the motherboard chipsets and GPUs), but I would like to think > that Toshiba would have done some due dilligence testing of their product. > For comparison, my SheevaPlug is compiling 24/7 for weeks at a time and has > never errored out. > > Any additional data points you guys can provide would be useful. > > Gordan > > _______________________________________________ > Mailing list: https://launchpad.net/~ac100 > Post to : [email protected] > Unsubscribe : https://launchpad.net/~ac100 > More help : https://help.launchpad.net/ListHelp > _______________________________________________ Mailing list: https://launchpad.net/~ac100 Post to : [email protected] Unsubscribe : https://launchpad.net/~ac100 More help : https://help.launchpad.net/ListHelp
