AOS-Project/utils/time-and-save.sh

#!/bin/bash

# Save path the current path that will be used to store the results.
BASE_PATH=$(pwd)

# Variable to store the name of the benchmark
BENCH_NAME=$1

# Local variable to store if cpu or gpu directed benchmark
TYPE=$2

# A bit of debug info to the user
echo "We are executing the benchmark $BENCH_NAME for $TYPE"

# Check if we need to create the directories to store the results
if [ ! -d "results" ]; then
    mkdir results
fi

if [ ! -d "results/$TYPE" ]; then
    mkdir results/$TYPE
fi


# Start power measurement
./SmartPower results/$TYPE/power-usage.csv >/dev/null & export PID_POWER=$!


# Enter in the directory of the benchmarks
cd $BENCH_NAME

# Start and time the actual benchmark and save the result in a local variable
BENCH_TIME=`(/usr/bin/time -f "%e" ./run-$TYPE) 2>&1 > /dev/zero | tail -1`

# Stop power measurement
kill -SIGUSR1 $PID_POWER

# Wait until the Smartpower utility has received the kill signal and force a sync on the disk to avoid reading the previous result from the result file

sleep 10 && sync

# A bit of debug info to the user
echo "Saving the results and preparing for the next benchmark"

# Prepare a log that contains all the info relative to a benchmark
# To retrieve the power measurement we take the third column of the last row from the file where the measurement utility has saved the results
BENCH_CONSUMPTION=`tail -1 $BASE_PATH/results/$TYPE/power-usage.csv | awk '{print $3}' | cut -d, -f2`
echo "$BENCH_NAME, $BENCH_TIME, $BENCH_CONSUMPTION" >> $BASE_PATH/results/$TYPE/total.dat


# Sleep in order to give time to the power measurement script to reset.
sleep 3

# Add an additional SIGKILL to avoid zombie processes in case of a faulty measurement, we ignore the standard output/error and we always succeed, otherwise make will complain
kill -SIGKILL $PID_POWER >/dev/null 2>&1 > /dev/null || true

# Sleep in order to give time to the power measurement script to reset and to dissipate the heat accumuled in the previous benchmark.
sleep 3