CTools:CCC:Plugins

#!/bin/bash

# Copyright (C) 2004-2010 by Grigori Fursin
#
# http://fursin.net/research
# 
# UNIDAPT Group
# http://unidapt.org

STAT_FILE=Stats/_stats__global_speedups
STAT_FILE1=${STAT_FILE}._SUMMARY.txt

# Set database variables
if [ -f "ccc--select-db.sh" ] ; then
 . ./ccc--select-db.sh
fi

# Delete previous statistic (some files are appended)
rm -rf ${STAT_FILE}.*

#export PLAT_ID=110787249241129258
#110787249241129258  AMD Opteron 2218
#708176059411291686  Intel Xeon EM64T

#export CMPLR_ID=329504539516446542
#329504539516446542  gcc 4.4.0

#export ENV_ID=198828472341129319
#198828472341129319  Debian Sid Linux v1.1

#retrieve opt cases only when execution time > TIME_THRESHOLD
#export TIME_THRESHOLD=0.3

#retrieve opt cases only with specific notes
#export NOTES=

#retrieve opt cases only when profile info is !=""
#export PG_USE=1

#retrieve opt cases only when execution output is correct (or not if =0)
#export OUTPUT_CORRECT=1

#Sort optimization case by speedup (0 - ex. time, 1 - code size, 2 - comp time)
#export SORT=012

#Produce optimization space frontier
#export DIM=01 (2D frontier)
#export DIM=02 (2D frontier)
#export DIM=12 (2D frontier)
#export DIM=012 (3D frontier)
#export DIM=012

#Cut cases when building optimization space frontier (select cases when speedup 0,1 or 2 is more than some threshold)
#export CUT=0,0,1.2
#export CUT=1,1,1
#export CUT=0,0,0

#export PROG_ID=4324827713289550
#export DS_NUM=1
#export DS_ID=

#check user or total execution time
#export RUN_TIME=RUN_TIME_USER
#export RUN_TIME=RUN_TIME

export CCC_FILE_TMP=tmp

export CCC_STATS=${STAT_FILE}
php $CCC_PLUGINS/plugins/get_global_speedups.php

The following graphs have been created using this script:

Example of complex optimization search spaces for susan_c from Collective Benchmark and MILEPOST GCC 4.4.0 after randomly selecting about 80 optimization flags:

We can automatically improve execution time of the program by nearly 2 times over the highest GCC optimization level after using CCC framework (we obtain similar results on LLVM, Open64, Intel and IBM compilers). We can also use CCC framework to perform multi-objective optimizations (selecting optimization cases on the optimization space frontier shown by red circles and blue dots) such as:

• optimize both execution time and code size (important for optimizing libraries and embedded/mobile computing systems)
• optimize just execution time (important for desktop computers and HPC servers/supercomputers)
• optimize both execution time and compilation time (important for cloud computing services and real-time systems)

You can also use MILEPOST GCC to correlate program features and behavior to predict good optimizations for unseen programs based on prior learning.

for a number of programs listed in the file list-progs.dat.

size and compilation time depending on user optimization scenarios.