crunch-unrolling.sh

#!/bin/bash

set -e

matrix=$1
[ -z $matrix ] && exit 1

perf_output_file=perf_output.tmp
events="branches,branch-misses,bus-cycles,cache-misses,cache-references,cpu-cycles,instructions,duration_time"

declare -A crunched_data
declare -A crunched_data_avg

# Iterate over each block size (0 == Naive)
for unroll in 1 2 4 8 16 32; do
    echo "#"
    echo "# UNROLL = $unroll (${matrix}x${matrix})"
    echo "#"
    echo "#define UNROLL $unroll" > unroll.h
    make

    for event in $events; do
        repeat=10
        if [ $unroll -eq 0 ]; then
            perf stat --repeat $repeat -x ";" -o $perf_output_file -e "$event" ../Naive/benchmark $matrix
        else
            perf stat --repeat $repeat -x ";" -o $perf_output_file -e "$event" ./benchmark $matrix
        fi

        OLDIFS=$IFS
        IFS=$'\n'
        perf_output=$(cat $perf_output_file | grep -v "\#")
        for line in $perf_output; do
            event="$(echo $line | cut -d ';' -f 3)"
            event_average="$(echo $line | cut -d ';' -f 1)"
            event_desv="$(echo $line | cut -d ';' -f 4)"

            if [[ "$event" == "duration_time" ]]; then
                event_average=$(python3 -c "print(round(${event_average} / 1e9, 4))")
            fi

            crunched_data[$event]="${crunched_data[$event]};$event_average±$event_desv"
            crunched_data_avg[$event]="${crunched_data_avg[$event]};$event_average"
        done
        IFS=$OLDIFS
    done
done

events=$(echo $events | sed 's/,/\ /g')

echo "Data with deviation: "
for event in $events; do
    echo -e "$event${crunched_data[$event]}"
done

echo "Bare data average"
for event in $events; do
    echo -e "$event${crunched_data_avg[$event]}" | sed 's/\./,/g'
done