run_stream

run.sh

#!/bin/bash

# Thread counts to test
THREAD_COUNTS=(8 16 32 64 72)

# Clone STREAM repo if not already present
if [ ! -d "STREAM" ]; then
    git clone https://github.com/rajesh-s/STREAM.git
fi

cd STREAM || exit 1

# Compile STREAM binary
gcc -O stream.c -o stream -O2 -mcmodel=large -fopenmp -fno-PIC \
    -DSTREAM_ARRAY_SIZE=400000000 -DNTIMES=100 -DSTREAM_TYPE=double \
    -mno-outline-atomics -mcpu=native

# Create a directory for logs
mkdir -p ../stream_logs

# Run STREAM for each thread count and save full output
for threads in "${THREAD_COUNTS[@]}"; do
    echo "Running with OMP_NUM_THREADS=$threads..."

    export OMP_SCHEDULE=static
    export OMP_PROC_BIND=TRUE
    export OMP_DYNAMIC=FALSE
    export OMP_NUM_THREADS="$threads"

    LOGFILE="../stream_logs/stream_output_${threads}.log"
    ./stream > "$LOGFILE" 2>&1

    echo "Output saved to $LOGFILE"
done

echo "✅ All runs complete. Logs saved in ./stream_logs/"