nanoBench Cache Analyzer

2026-01-05 03:50:06 +01:00 · 2019-09-24 14:48:08 +02:00
parent 5d651050da
commit 9c075f04a5
12 changed files with 2258 additions and 0 deletions
--- a/tools/CacheAnalyzer/permPolicy.py
+++ b/tools/CacheAnalyzer/permPolicy.py
@@ -0,0 +1,104 @@
+#!/usr/bin/python
+from itertools import count
+from collections import namedtuple, OrderedDict
+
+import argparse
+import math
+import os
+import re
+import subprocess
+import sys
+
+from plotly.offline import plot
+import plotly.graph_objects as go
+
+from cacheLib import *
+from cacheGraph import *
+
+import logging
+log = logging.getLogger(__name__)
+
+
+def getPermutations(level, html, cacheSets=None, getInitialAges=True, maxAge=None, cBox=1):
+   assoc = getCacheInfo(level).assoc
+   if not maxAge:
+      maxAge=2*assoc
+
+   hitEvent = 'L' + str(level) + '_HIT'
+   missEvent = 'L' + str(level) + '_MISS'
+
+   if getInitialAges:
+      initBlocks = ['I' + str(i) for i in range(0, assoc)]
+      seq = ' '.join(initBlocks)
+
+      initAges, nbDict = getAgesOfBlocks(initBlocks, level, seq, cacheSets=cacheSets, clearHL=True, wbinvd=True, returnNbResults=True, maxAge=maxAge, cBox=cBox)
+
+      accSeqStr = 'Access sequence: <wbinvd> ' + seq
+      print accSeqStr
+      print 'Ages: {' + ', '.join(b + ': ' + str(initAges[b]) for b in initBlocks) + '}'
+
+      event = (hitEvent if hitEvent in next(iter(nbDict.items()))[1][0] else missEvent)
+      traces = [(b, [nb[event] for nb in nbDict[b]]) for b in initBlocks]
+      html.append(getPlotlyGraphDiv(accSeqStr + ' <n fresh blocks> <block>?', '# of fresh blocks', hitEvent, traces))
+   else:
+      initBlocks = []
+
+   blocks = ['B' + str(i) for i in range(0, assoc)]
+   baseSeq = ' '.join(initBlocks + blocks)
+
+   ages, nbDict = getAgesOfBlocks(blocks, level, baseSeq, cacheSets=cacheSets, clearHL=True, wbinvd=True, returnNbResults=True, maxAge=maxAge, cBox=cBox)
+
+   accSeqStr = 'Access sequence: <wbinvd> ' + baseSeq
+   print accSeqStr
+   print 'Ages: {' + ', '.join(b + ': ' + str(ages[b]) for b in blocks) + '}'
+
+   event = (hitEvent if hitEvent in next(iter(nbDict.items()))[1][0] else missEvent)
+   traces = [(b, [nb[event] for nb in nbDict[b]]) for b in blocks]
+   html.append(getPlotlyGraphDiv(accSeqStr + ' <n fresh blocks> <block>?', '# of fresh blocks', hitEvent, traces))
+
+   blocksSortedByAge = [a[0] for a in sorted(ages.items(), key=lambda x: -x[1])] # most recent block first
+
+   for permI, permBlock in enumerate(blocksSortedByAge):
+      seq = baseSeq + ' ' + permBlock
+      permAges, nbDict = getAgesOfBlocks(blocks, level, seq, cacheSets=cacheSets, clearHL=True, wbinvd=True, returnNbResults=True, maxAge=maxAge, cBox=cBox)
+
+      accSeqStr = 'Access sequence: <wbinvd> ' + seq
+      traces = [(b, [nb[event] for nb in nbDict[b]]) for b in blocks]
+      html.append(getPlotlyGraphDiv(accSeqStr + ' <n fresh blocks> <block>?', '# of fresh blocks', hitEvent, traces))
+
+      perm = [-1] * assoc
+      for bi, b in enumerate(blocksSortedByAge):
+         permAge = permAges[b]
+         if permAge < 1 or permAge > assoc:
+            break
+         perm[assoc-permAge] = bi
+
+      print u'\u03A0_' + str(permI) + ' = ' + str(tuple(perm))
+
+
+def main():
+   parser = argparse.ArgumentParser(description='Replacement Policies')
+   parser.add_argument("-level", help="Cache level (Default: 1)", type=int, default=1)
+   parser.add_argument("-sets", help="Cache sets (if not specified, all cache sets are used)")
+   parser.add_argument("-noInit", help="Do not fill sets with associativity many elements first", action='store_true')
+   parser.add_argument("-maxAge", help="Maximum age", type=int)
+   parser.add_argument("-cBox", help="cBox (default: 1)", type=int, default=1)
+   parser.add_argument("-logLevel", help="Log level (DEBUG, INFO, WARNING, ERROR, CRITICAL)", default='WARNING')
+   parser.add_argument("-output", help="Output file name", default='permPolicy.html')
+   args = parser.parse_args()
+
+   logging.basicConfig(stream=sys.stdout, format='%(message)s', level=logging.getLevelName(args.logLevel))
+
+   title = cpuid.cpu_name(cpuid.CPUID()) + ', Level: ' + str(args.level)
+
+   html = ['<html>', '<head>',  '<title>' + title + '</title>', '<script src="https://cdn.plot.ly/plotly-latest.min.js"></script>', '</head>', '<body>']
+   html += ['<h3>' + title + '</h3>']
+   getPermutations(args.level, html, cacheSets=args.sets, getInitialAges=(not args.noInit), maxAge=args.maxAge, cBox=args.cBox)
+   html += ['</body>', '</html>']
+
+   with open(args.output ,'w') as f:
+      f.write('\n'.join(html))
+
+
+if __name__ == "__main__":
+    main()