This is a Go port of llama2.c.

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