William Stein wrote: > On Tue, Dec 22, 2009 at 5:08 PM, Dr. David Kirkby > <[email protected]> wrote: >> I've just set this Sage 4.2.1 server up. >> >> It's on my home computer, on a slow network, so performance wont be great. >> The >> machine is also 8 years old, so don't expect miracles from it! > > It seems to work well. Is it a 4-core box? > > Calling get_memory_usage() goes nuts with: > > sh: top: not found > sh: top: not found > sh: top: not found > ... > > since I guess we never rewrote that command to not rely on top.
No, it is not quad core. It is a Sun Blade 2000 with 2 x 1200 MHz UltraSPARC III+ CPUs. This Blade 2000 was made in 2002 - probably before the days of CPUs with multiple cores. But only one processor is available in this zone, so the zone will not know how many there are. I assume there must be 4 calls to top. My quad core (8 thread) machine is the Sun Ultra 27, which runs Open Solaris on a 3.33 GHz Xeon. I'd like to get Sage running on that, as that machine will be considerably faster than this, and has a bit more memory (12 GB vs the 8 in the Sun Blade 2000). I might postulate that the fact the Sage code does not know how much RAM is being used, would make it quite easy to exhaust the 6 GB of RAM allocated to the zone. I assume the limit I applied starting the notebook will not actually do anything. Anyway, feel free to crash it if you want. As I say, it wont cause me any problems, as it is in a zone. Dave -- To post to this group, send an email to [email protected] To unsubscribe from this group, send an email to [email protected] For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
