10 Mar
2011
10 Mar
'11
12:11 a.m.
According to the man page, it apparently needs a kernel driver named OpenIMPI, which it claims is installed in standard distributions. I don't find it on my system.
lm_sensors is another, and I think installs ready to use from the repos.
Failing that, you should reboot and look in the motherboard's bios/cmos. It should display all that good stuff: fan speeds, voltage levels, temps.