Compiles a program with a particular set of inputs, runs multiple times, and then outputs the average of each run. The program should submit a single integer to stdout. In this example, the outer loop passes the values 1, 2, 4, 8, etc. (as WORKGROUPSIZE) and the inner loop passes the values 1024, 2048, 4096, etc. (as ARRAYSIZE). The data is aver…

Bash script average with double loop

#!/bin/bash

# Create or clear output file
> data.csv

# Run for multiple tries and compute average
TRIES=10
WORKGROUPCOUNTER=1
while [ $WORKGROUPCOUNTER -le 256 ]
do
    WORKGROUPSIZE=$(( WORKGROUPCOUNTER * 1 ))
    ARRAYCOUNTER=1
    while [ $ARRAYCOUNTER -le 8192 ]
    do
        SUM=0
        ARRAYSIZE=$(( $ARRAYCOUNTER * 1024 ))
        g++ main.cpp -DGLOBAL=${ARRAYSIZE} -DLOCAL=${WORKGROUPSIZE} -o main -lm -fopenmp
        for TRY in $(seq ${TRIES})
        do
            OUTPUT=$(./main)
            SUM=$(( (SUM + OUTPUT) ))
        done
        AVG=$(( SUM / TRIES ))
        printf "$AVG" >> data.csv
        printf ',' >> data.csv
        ARRAYCOUNTER=$(( $ARRAYCOUNTER * 2 ))
    done
    echo >> data.csv
    WORKGROUPCOUNTER=$(( $WORKGROUPCOUNTER * 2 ))
done