Yes, per core CPU frequency scaling works on quad cores starting from the Barcelona series including your chip which is a shanghai. And the powernow_k8 driver works perfectly. I have performed some tests confirming this including runtime tests using synthetic benchmarks. > On Thu, Mar 26, 2009 at 8:27 AM, Victor Jimenez <victor.javier@xxxxxx> > wrote: >> >> Hello, >> >> we are considering to buy a system with an AMD Opteron 2384 processor. We >> want to conduct some experiments with dynamic voltage frequency scaling >> (DVFS). >> >> It seems the chips supports DVFS per core, so one core can be running at >> frequency X and the other core can do it at frequency Y. However, we are not >> sure how to access all the actuators to change frequency/voltage. >> >> Is cpufreq from Linux kernel supporting this? I could only find support >> for K8 microarchitectures and a patch to read the temperatures for K10 >> microarchitecture (e.g., Opteron 2384). However, we are not sure whether is >> it possible to perform DVFS for K10 microarchitecture using cpufreq. >> >> Does anyone know anything about this? Any plans to support K10 in cpufreq? >> >> Thanks in advance, >> Victor >> >> -- >> Víctor Jiménez >> Barcelona Supercomputing Center (BSC) >> Edifici Nexus I - Despatx 105 >> Jordi Girona, 1-3, Campus Nord >> 08034 Barcelona (SPAIN) >> Tlf. 93 401 72 95 >> >> -- >> To unsubscribe from this list: send the line "unsubscribe cpufreq" in >> the body of a message to majordomo@xxxxxxxxxxxxxxx >> More majordomo info at http://vger.kernel.org/majordomo-info.html > > > > -- > Amithash E. Prasad > ECE Department, CU > http://eces.colorado.edu/~prasadae > -- Amithash E. Prasad ECE Department, CU http://eces.colorado.edu/~prasadae -- To unsubscribe from this list: send the line "unsubscribe cpufreq" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
