Updating.

This commit is contained in:
Daniel Lemire 2018-12-24 16:02:53 -05:00
parent d975fc7543
commit 2afff77567
6 changed files with 90 additions and 1 deletions

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loading modeltable.txt
chosenpredictors= ['integer_count', 'float_count', 'string_count', 'backslash_count', 'nonasciibyte_count', 'object_count', 'array_count', 'null_count', 'true_count', 'false_count', 'byte_count', 'structural_indexes_count']
target = stage1_cycle_count
0.55 cycles per byte_count
R2 = 0.9952005292028262
target = stage2_cycle_count
2 cycles per structural_indexes_count
0.11 cycles per byte_count
R2 = 0.9941606366930587
target = stage3_cycle_count
14 cycles per float_count
11 cycles per structural_indexes_count
0.31 cycles per byte_count
R2 = 0.9824350906350493
target = total_cycles
17 cycles per float_count
13 cycles per structural_indexes_count
0.96 cycles per byte_count
R2 = 0.991605569037089

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import os
import pandas as pd
import numpy as np
import matplotlib.pyplot as plt
from sklearn.model_selection import train_test_split
from sklearn.linear_model import LinearRegression
from sklearn.linear_model import Ridge
from sklearn.linear_model import Lasso
from sklearn.preprocessing import normalize
from sklearn import metrics
def displaycoefs(coef_name):
coef_name.sort()
coef_name.reverse()
for c,n in coef_name:
print("\t%0.2g cycles per %s "%(c,n))
datafile = "modeltable.txt" ## from ./scripts/statisticalmodel.sh
predictors = ["integer_count", "float_count", "string_count", "backslash_count", "nonasciibyte_count", "object_count", "array_count", "null_count", "true_count", "false_count", "byte_count", "structural_indexes_count"]
targets = ["stage1_cycle_count", "stage1_instruction_count", "stage2_cycle_count", "stage2_instruction_count", "stage3_cycle_count", "stage3_instruction_count"]
print("loading", datafile)
dataset = pd.read_csv(datafile, delim_whitespace=True, skip_blank_lines=True, comment="#", header=None, names = predictors + targets)
dataset.columns = predictors + targets
dataset['total_cycles']=dataset['stage1_cycle_count']+dataset['stage2_cycle_count']+dataset['stage3_cycle_count']
dataset['ratio']=dataset['total_cycles']/dataset['byte_count']
#print(dataset[['ratio']])
chosenpredictors = predictors #["integer_count", "float_count", "string_count", "backslash_count", "nonasciibyte_count", "byte_count", "structural_indexes_count"]
print("chosenpredictors=",chosenpredictors)
print()
chosentargets=["stage1_cycle_count", "stage2_cycle_count", "stage3_cycle_count","total_cycles"]
for t in chosentargets:
print("target = ", t)
howmany = 1 # we want at most one predictors
if(t.startswith("stage2")):
howmany = 2 # we allow for less
if(t.startswith("stage3")):
howmany = 3 # we allow for more
if(t.startswith("total")):
howmany = 3 # we allow for more
A=10000000.0
while(True):
regressor = Lasso(max_iter=100000, alpha=A, positive = True, normalize=False, fit_intercept=False) #LinearRegression(normalize=False, fit_intercept=False)
x = dataset[chosenpredictors]
y = dataset[[t]]
regressor.fit(x, y)
rest = list(filter(lambda z: z[0] != 0, zip(regressor.coef_,chosenpredictors) ))
nonzero = len(rest)
if(nonzero > howmany):
A *= 1.2
else:
#print(rest)
displaycoefs(rest)
print("R2 = ", regressor.score(x,y))
Y_pred = regressor.predict(x)
break
print()

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python learn.py > analysis.txt

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SCRIPTPATH="$( cd "$(dirname "$0")" ; pwd -P )"
gnuplot -e "filename='plots/skylake/parselinuxtable.txt';name='plots/skylake/stackedperf.pdf'" $SCRIPTPATH/stackbar.gnuplot
gnuplot -e "filename='plots/nuc/parselinuxtable.txt';name='plots/nuc/stackedperf.pdf'" $SCRIPTPATH/stackbar.gnuplot
echo "plots/skylake/stackedperf.pdf"
echo "plots/nuc/stackedperf.pdf"