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stdlib: Added stdlib LoopPoint classes

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LoopPoint is a multithreaded workload sampling method that targets
PCs and PC execution counts.
The main idea for LoopPoint is to base the beginning and end of the
simjulation sample on the number of times a particular loop (PC) has
been executed globally across all threads in a region that partitioned
with a set length of instruction counts. This in some senses
generalizes SimPoint which use the instruction count of a single
thread.
The link to the paper: https://ieeexplore.ieee.org/document/9773236

The LoopPointCheckpoint is designed to take in LoopPoint data file
and generate the information needed to take checkpoints for LoopPoint
regions(warmup regions+simulation region)
The LoopPointRestore is designed to take in the LoopPOint data file
and generate information needed to to restore a checkpoint taken by
the LoopPOintCheckpoint.
The LoopPoint is the parent class for LoopPointCheckpoint and
LoopPointRestore.

Change-Id: I595b0ff9d350c7c496639748a9c63ecc61fbaec9
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/67195
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Bobby Bruce <bbruce@ucdavis.edu>
Maintainer: Bobby Bruce <bbruce@ucdavis.edu>
This commit is contained in:
Zhantong Qiu
2023-01-06 17:13:27 -08:00
parent 0d129a6bf2
commit 41816bf030
4 changed files with 429 additions and 2 deletions
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src/python/SConscript
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@@ -240,6 +240,7 @@ PySource('gem5.components.processors',
PySource('gem5.components.processors',
'gem5/components/processors/switchable_processor.py')
PySource('gem5.utils', 'gem5/utils/simpoint.py')
PySource('gem5.utils', 'gem5/utils/looppoint.py')
PySource('gem5.components.processors',
'gem5/components/processors/traffic_generator_core.py')
PySource('gem5.components.processors',