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#!/usr/bin/env bash
# Benchmark using ollama gives rate of tokens per second
# idea taken from https://taoofmac.com/space/blog/2024/01/20/1800

set -e

usage() {
echo „Usage: $0 [OPTIONS]“
echo „Options:“
echo “ -h, –help Display this help message“
echo “ -d, –default Run a benchmark using some default small models“
echo “ -m, –model Specify a model to use“
echo “ -c, –count Number of times to run the benchmark“
echo “ –ollama-bin Point to ollama executable or command (e.g if using Docker)“
echo “ –markdown Format output as markdown“
}

# Parse flags passed to program
while [[ $# -gt 0 ]]; do
case $1 in
-h|–help)
usage
exit 0
;;
–ollama-bin)
ollama_bin=“$2″
shift
shift
;;
-d|–default)
default_flag=true
shift
;;
–markdown)
markdown=true
shift
;;
-m|–model)
model=“$2″
shift
shift
;;
-c|–count)
benchmark=“$2″
shift
shift
;;
*)
echo „Unknown option: $1“
usage
exit 1
;;
esac
done

if [ -z „$ollama_bin“ ]; then
ollama_bin=“ollama“
fi

base_cmd=$(echo „$ollama_bin“ | awk ‚{print $1}‘)
if ! command -v „$base_cmd“ &> /dev/null; then
echo „Error: $base_cmd could not be found. Please check the path or install it.“
exit 1
fi

# Original comment about defaults mentions running multiple models that fit
# into memory, but for simplicity and ease of replication I just picked one.
if [ „$default_flag“ = true ]; then
benchmark=3
model=“llama3.2:3b“
fi

if [ -z „$benchmark“ ]; then
echo „How many times to run the benchmark?“
read -r benchmark
fi

if [ -z „$model“ ]; then
echo „Current models available locally“
echo „“
$ollama_bin list
echo „“
echo „Enter model you’d like to run (e.g. llama3.2)“
echo „“
read -r model
fi

echo -e „Running benchmark $benchmark times using model: $model“
echo „“
if [ „$markdown“ = true ]; then
echo „| Run | Eval Rate (Tokens/Second) |“
echo „|—–|—————————–|“
fi

total_eval_rate=0
for run in $(seq 1 „$benchmark“); do
result=$($ollama_bin run „$model“ –verbose „Why is the blue sky blue?“ 2>&1 >/dev/null | grep „^eval rate:“)
# With this we could clean up the non-Markdown results a bit more, but leaving it as is for compatibility.
eval_rate=$(echo „$result“ | awk ‚{print $3}‘)
total_eval_rate=$(echo „$total_eval_rate + $eval_rate“ | bc -l)
if [ „$markdown“ = true ]; then
echo „| $run | $eval_rate tokens/s |“
else
echo „$result“
fi
done

average_eval_rate=$(echo „scale=2; $total_eval_rate / $benchmark“ | bc)
if [ „$markdown“ = true ]; then
echo „|**Average Eval Rate**| $average_eval_rate tokens/second |“
else
echo „Average Eval Rate: $average_eval_rate tokens/second“
fi

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