Sherif Elhabbal has submitted this change and it was merged. (
https://gem5-review.googlesource.com/c/public/gem5/+/12684 )
Change subject: config, arm, power: Example to report the power for the L2
Cache
......................................................................
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 <[email protected]>
Change-Id: Idde43c8bcb10df9d44d20282eaf21ce87a9d3f58
Reviewed-on: https://gem5-review.googlesource.com/12684
Reviewed-by: Jason Lowe-Power <[email protected]>
Reviewed-by: Anouk Van Laer <[email protected]>
Maintainer: Jason Lowe-Power <[email protected]>
---
M configs/example/arm/fs_power.py
1 file changed, 27 insertions(+), 0 deletions(-)
Approvals:
Jason Lowe-Power: Looks good to me, approved; Looks good to me, approved
Anouk Van Laer: Looks good to me, approved
diff --git a/configs/example/arm/fs_power.py
b/configs/example/arm/fs_power.py
index b27455f..7b92c8d 100644
--- a/configs/example/arm/fs_power.py
+++ b/configs/example/arm/fs_power.py
@@ -69,6 +69,25 @@
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 @@
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)
--
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Gerrit-Project: public/gem5
Gerrit-Branch: master
Gerrit-Change-Id: Idde43c8bcb10df9d44d20282eaf21ce87a9d3f58
Gerrit-Change-Number: 12684
Gerrit-PatchSet: 3
Gerrit-Owner: Sherif Elhabbal <[email protected]>
Gerrit-Reviewer: Andreas Sandberg <[email protected]>
Gerrit-Reviewer: Anouk Van Laer <[email protected]>
Gerrit-Reviewer: Jason Lowe-Power <[email protected]>
Gerrit-Reviewer: Sherif Elhabbal <[email protected]>
Gerrit-CC: Matthias Jung <[email protected]>
Gerrit-MessageType: merged
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