Dual Zeon Intel SE7500CW2 brd (Intel E7500 chipset)
on boot up the bios indicates 4 cpus
redhat 8.0 appears to think it 4 cpus rather than 2 and it runs as if it
The user wrote a small program that takes about 18 seconds to
execute when it has a CPU all to itself. I then ran either 1, 2, 3, 4,
or 8 copies at the same time, but "timed" one of them. If I have 2
processors used to their max speed, I should see a drop off in speed for
more than 2 jobs. But I don't. Up to 4 jobs simultaneously take
essentially the same amount of time (see results below).
output from the command "time a.out" depending on number of jobs running
simultaneously. "real" time is the one that matters. "user" time,
whatever that means, scales linearly with the number of jobs.
real 0m31.030s (about 1.5 times normal. makes sense for 4 CPUs)
real 0m41.468s (about 2.0 times normal. again, looks like 4
same thing with Win XP - 4 cpus show up in task manager