perf-test

#!/bin/bash
make > /dev/null || exit $?
N=100000000
if [ $# -gt 1 ]; then
  echo "too many args"
  echo "usage: $0 [size-of-sort]"
  exit 2
fi
if [ $# -eq 1 ]; then
  if [[ $1 =~ ^[0-9][0-9]*$ ]]; then
    N="$1"
  else
    echo "arg not a number: $1"
    echo "usage: $0 [size-of-sort]"
    exit 2
  fi
fi
printf "%-24s" ""
for np in 1 2 4 8 12 16 20 24; do
  printf "%6d" "$np"
done
printf '\n'
for test in \
  serial_mergesort \
  mpi_mergesort \
  mpi_rma_mergesort \
  hybrid_mergesort \
  omp_mergesort \
  upc_hybrid_mergesort \
  upc_mergesort \
  upc_no_copy_mergesort
do
  printf "%-24s" $test
  for np in 1 2 4 8 12 16 20 24
  do
    case $test in
      serial_mergesort)
        cmd="./$test $N";;
      omp_mergesort)
        cmd="./$test $N $np";;
      mpi_mergesort|mpi_rma_mergesort)
        cmd="mpirun -n $np -hosts localhost ./$test $N";;
      hybrid_mergesort)
        if [ $np = 1 ]; then
          cmd="mpirun -n 1 -hosts localhost ./$test $N 1"
        elif [ $np -lt 8 ]; then
          # We use 2 processes and vary the number of OMP threads.
	  op=`expr $np / 2`
          cmd="mpirun -n 2 -hosts localhost ./$test $N $op"
	else
          # We use 4 processes and vary the number of OMP threads.
	  op=`expr $np / 4`
          cmd="mpirun -n 4 -hosts localhost ./$test $N $op"
	fi
	;;
      upc_hybrid_mergesort)
        if [ $np = 1 ]; then
          cmd="./$test -n 1 $N 1"
        elif [ $np -lt 8 ]; then
          # We use 2 processes and vary the number of OMP threads.
	  op=`expr $np / 2`
          cmd="./$test -n 2 $N $op"
	else
          # We use 4 processes and vary the number of OMP threads.
	  op=`expr $np / 4`
          cmd="./$test -n 4 $N $op"
	fi
	;;
      upc_mergesort|upc_no_copy_mergesort)
        cmd="./$test -n $np $N";;
      *)
        echo "unknown test: $test"
	exit 2 
	;;
    esac
    t_sample=
    for i in {1..5}; do
      t=`eval "$cmd" |& awk '/^Elapsed = / {printf "%6.2f\n", $3}'`
      [ -n "$t" ] || t="N/A"
      t_sample+="${tsample:+ }${t}"
    done
    median=`echo $t_sample | tr ' ' '\n' | sort -k1n | head -3 | tail -1`
    printf "%6s" "$median"
  done
  printf '\n'
done