![Implementation
EnergyProfiler new profile: [ …]
EnergyProfiler new
profile: [ (Delay forSeconds: 2) wait ]
Can export to CSV, Roassal
Low level measurement using Intel Power Gadget
& OSSubProcess](https://image.slidesharecdn.com/09-2016-energyprofilingpharo-160901145244/85/Power-and-Energy-Code-Profiling-in-Pharo-22-320.jpg)
Power and Energy Code Profiling in Pharo
- 1. Power and Energy Code Profiling in Pharo Alexandre Bergel University of Chile http://bergel.eu
- 4. Joule (J) is a unit of energy Lifting 100g by one meter = 1 J1 meter
- 5. Watt (W) is a unit of power defined as Joule / second 1 W = 1 J / s
- 7. PkgPower for the whole processor (5 <= PkgPower <= 40W) IAPower for the cores (2 <= IAPower <= 35 W)
- 8. PkgPower for the whole processor (5 <= PkgPower <= 40W) IAPower for the cores (2 <= IAPower <= 35 W)
- 9. PkgPower for the whole processor (5 <= PkgPower <= 40W) IAPower for the cores (2 <= IAPower <= 35 W) PkgTemp graphic & cores (between 40 and 60 C)
- 10. PkgPower for the whole processor (5 <= PkgPower <= 40W) IAPower for the cores (2 <= IAPower <= 35 W) PkgTemp graphic & cores (between 40 and 60 C) IAFreq CPU frequency (1.7 Ghz <= 3.2Ghz I5 <= 3.6)
- 11. Software & Hardware Pharo 5 image & Cog OS X El Capitan, version 10.11.4 Studied Intel Core i5 on an iMac (3.2Ghz) Experiments have been made at 22 C Network and screen disabled
- 12. Virtual Machine Launch & Being Idle Operating system PkgPower = 6W IAPower = 2.5W PkgTemp = 42C IAFreq = 1.78Ghz VM Launch Opening a 47Mb image consumes 3mWh Pharo open and doing nothing PkgPower = 6W (despite the few % of CPU consumption)
- 13. 5/13/16, 5:22 PM 0.620.460.310.150.0 28.0 24.0 20.0 16.0 12.0 8.0 4.0 0.0 PkgPower(Watt) Elapsed Time (sec) 0.620.460.310.150.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 CuPakPower(mWh) Elapsed Time (sec)
- 16. Benchmark execution Wait 10 seconds between each run, to make sure that the CPU cools down
- 18. 96420 30 22 15 7 0 PkgPower (W) Time (s) GC4 Micro-Benchmark execution Creation, filling, destruction of 10 kb memory blocks
- 20. Macro-Benchmark execution 1410730 30 22 15 7 0 PkgPower (W) Time (s) FB Computing a force based layout on a graph made of 5,000 nodes and 5,000 edges
- 21. PkgPower x PkgTemp Plot BenchmarkFB Benchmark 23.619.014.39.75.0 56 52 48 44 40 PkgTemp PkgPower 23.021.520.018.517.0 65 60 55 PkgTemp PkgPower (plotting 30K values) (force based layout on 5K nodes & 5K edges)
- 22. Implementation EnergyProfiler new profile: [ …] EnergyProfiler new profile: [ (Delay forSeconds: 2) wait ] Can export to CSV, Roassal Low level measurement using Intel Power Gadget & OSSubProcess
- 23. Future work New, challenging, exciting area Many possible future works replication across processors page swapping processor and VM intern caches