llama2.go

This is a Go port of llama2.c.

Setup

1. Download a model:

2. Download tokenizer.bin

3. go install github.com/saracen/llama2.go/cmd/llama2go@latest

4. Do things:

   ./llama2go --help
   llama2go: <checkpoint>
     -cpuprofile string
            write cpu profile to file
     -prompt string
            prompt
     -steps int
            max number of steps to run for, 0: use seq_len (default 256)
     -temperature float
            temperature for sampling (default 0.9)
   
   ./llama2go -prompt "Cute llamas are" -steps 38 --temperature 0 stories110M.bin
   <s>
   Cute llamas are two friends who love to play together. They have a special game that they play every day. They pretend to be superheroes and save the world.
   achieved tok/s: 43.268528

Performance

Tokens per second:

system	model	llama2.c	llama2.go (no cgo)	llama2.go (cgo)
M1 Max, 10-Core, 32 GB	stories15M	676.392573	246.885611	473.840849
M1 Max, 10-Core, 32 GB	stories42M	267.295597	98.165245	151.396638
M1 Max, 10-Core, 32 GB	stories110M	100.671141	42.592345	69.804907