Powerscale4ppc (Power and Frequency Scaling for the IBM PowerPC 970) is an IBM free-trial emerging technology power management solution that demonstrates a power management implementation for the PPC970FX and CPC925 bridge chips on the Maple-D PC970FX evaluation platform running on Linux. This technology demonstrates how to dynamically scale the system’s operating frequency from F to F/2, in order to create a cooler, more power-efficient system.
i love the ibm site… where’s the devkit-hardware?
“This technology demonstrates how to dynamically scale the system’s operating frequency from F to F/2, in order to create a cooler, more power-efficient system.”
Similiar to AMD’s “Cool & Quiet” I would think?
Yes, it is very similar.
The hardware is here:
http://www.970eval.com/
yeah, go pay $6000 and keep the change…
I think it is time for Open Desktop Workstations on ppc970
I think it is time for Open Desktop Workstations on ppc970
How much are you willing to pay? $5,000?
Nice. I wonder how much energy Amd’s cool & quite saves… (this on my s754 Sempron 3100+)
root@mcsaba# powerd -v -a adaptive -i 80 -r 65
idle time < 65%, increasing clock speed from 127 MHz to 382 MHz
idle time < 65%, increasing clock speed from 382 MHz to 636 MHz
idle time < 65%, increasing clock speed from 636 MHz to 891 MHz
idle time < 65%, increasing clock speed from 891 MHz to 1146 MHz
idle time < 65%, increasing clock speed from 1146 MHz to 1401 MHz
idle time < 65%, increasing clock speed from 1401 MHz to 1655 MHz
idle time < 65%, increasing clock speed from 1655 MHz to 1910 MHz
idle time < 65%, increasing clock speed from 1910 MHz to 2038 MHz
idle time > 80%, decreasing clock speed from 2038 MHz to 1910 MHz
idle time > 80%, decreasing clock speed from 1910 MHz to 1783 MHz
idle time > 80%, decreasing clock speed from 1783 MHz to 1655 MHz
idle time > 80%, decreasing clock speed from 1655 MHz to 1528 MHz
idle time > 80%, decreasing clock speed from 1528 MHz to 1401 MHz
idle time > 80%, decreasing clock speed from 1401 MHz to 1273 MHz
idle time > 80%, decreasing clock speed from 1273 MHz to 1146 MHz
idle time > 80%, decreasing clock speed from 1146 MHz to 1019 MHz
idle time > 80%, decreasing clock speed from 1019 MHz to 891 MHz
idle time > 80%, decreasing clock speed from 891 MHz to 764 MHz
idle time > 80%, decreasing clock speed from 764 MHz to 636 MHz
idle time > 80%, decreasing clock speed from 636 MHz to 509 MHz
idle time > 80%, decreasing clock speed from 509 MHz to 382 MHz
idle time > 80%, decreasing clock speed from 382 MHz to 254 MHz
idle time > 80%, decreasing clock speed from 254 MHz to 127 MHz
What happened here is that I started up Gimp. This is on FreeBSD though…
Isn’t the PPC970FX chip the one shipped with iBook G3s? I also remember the Linux kernel having power management for iBook G3s.
No, the 970FX is a high-end processor that is used in iMac G5s and Power Mac G5s.
The iBook G3 may have used the 750FX.
Ah thanks for the clarification.
who is the special contributor? whatever about the IBM story plants please don’t tell us that they can directly link marketing material anonymously now as well.