Implement Power Policy based on Dynamic Duty Cycle Modulation in NRM
Need to implement Power Policy based on Dynamic Duty Cycle Modulation in NRM (See Issue #10 (closed)).
Dynamic Duty Cycle Modulation (DDCM) is core-specific and is mostly available on Intel architectures (even pre-Haswell).
DDCM based power policy is aimed to mitigate workload imbalance in parallel applications that use barrier synchronizations (E.g. MPI). It reduces the duty cycle of CPUs not on the critical path of execution thereby reducing energy with little or no adverse impact on performance.
Find below the set of tasks towards achieving this
- Implement Model Specific Register (MSR) module in Coolr directory to allow access to MSRs
- Implement Duty Cycle module using MSR module in Coolr directory to set, reset and check Duty Cycle on a CPU
- Implement DDCM Policy
- Implement Power Policy Manager to allow invocation of all power policies including DDCM Policy