Updated likwid setFrequencies (markdown) authored by Thomas Roehl's avatar Thomas Roehl
...@@ -7,7 +7,7 @@ Often systems are configured to use as little power as needed and therefore redu ...@@ -7,7 +7,7 @@ Often systems are configured to use as little power as needed and therefore redu
Starting with LIKWID version 3.1.2 we included a daemon and control script to change the frequency and scaling governor of affinity regions. All operations that require only readable access to the control files in sysfs are implemented in the script. Only the writeable access is forbidden for normal users and requires a more privileged daemon. Starting with LIKWID version 3.1.2 we included a daemon and control script to change the frequency and scaling governor of affinity regions. All operations that require only readable access to the control files in sysfs are implemented in the script. Only the writeable access is forbidden for normal users and requires a more privileged daemon.
## Notice ## Notice
likwid-setFrequencies can only be used in conjunction with the `acpi-cpufreq` kernel module. The `intel_pstate` kernel module, introduced with Linux kernel 3.10, does not allow to fix the clock frequency of cores. likwid-setFrequencies can only be used in conjunction with the `acpi-cpufreq` kernel module. The `intel_pstate` kernel module, introduced with Linux kernel 3.10, does not allow to fix the clock frequency of cores. In order to deactivate the `intel_pstate` module, add `intel_pstate=disable` to the kernel command line in GRUB.
## Options ## Options
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