From 537d6874c89da93d9e415ca135dbe0ec3f132669 Mon Sep 17 00:00:00 2001 From: Sherif Elhabbal Date: Fri, 14 Sep 2018 17:10:24 +0200 Subject: [PATCH] config, arm, power: Example to report the power for the L2 Cache This patch add an example to demonstrate how to report the power for the L2 Cache of the big cluster separately ,it decouples the L2 contributions from the CPU power equation Signed-off-by: Sherif Elhabbal Change-Id: Idde43c8bcb10df9d44d20282eaf21ce87a9d3f58 Reviewed-on: https://gem5-review.googlesource.com/12684 Reviewed-by: Jason Lowe-Power Reviewed-by: Anouk Van Laer Maintainer: Jason Lowe-Power --- configs/example/arm/fs_power.py | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/configs/example/arm/fs_power.py b/configs/example/arm/fs_power.py index b27455f13..7b92c8db8 100644 --- a/configs/example/arm/fs_power.py +++ b/configs/example/arm/fs_power.py @@ -69,6 +69,25 @@ class CpuPowerModel(PowerModel): CpuPowerOff(), # OFF ] +class L2PowerOn(MathExprPowerModel): + # Example to report l2 Cache overall_accesses + # The estimated power is converted to Watt and will vary based on the size of the cache + dyn = "overall_accesses*0.000018000" + st = "(voltage * 3)/10" + +class L2PowerOff(MathExprPowerModel): + dyn = "0" + st = "0" + +class L2PowerModel(PowerModel): + # Choose a power model for every power state + pm = [ + L2PowerOn(), # ON + L2PowerOff(), # CLK_GATED + L2PowerOff(), # SRAM_RETENTION + L2PowerOff(), # OFF + ] + def main(): parser = argparse.ArgumentParser( @@ -90,6 +109,14 @@ def main(): cpu.default_p_state = "ON" cpu.power_model = CpuPowerModel() + # Example power model for the L2 Cache of the bigCluster + for l2 in root.system.bigCluster.l2.descendants(): + if not isinstance(l2, m5.objects.Cache): + continue + + l2.default_p_state = "ON" + l2.power_model = L2PowerModel() + bL.instantiate(options) print("*" * 70) -- 2.30.2