Add quantize script for batch quantization (#92)

* Add quantize script for batch quantization

* Indentation

* README for new quantize.sh

* Fix script name

* Fix file list on Mac OS

---------

Co-authored-by: Georgi Gerganov <ggerganov@gmail.com>

README.md

@@ -145,44 +145,16 @@ python3 -m pip install torch numpy sentencepiece
 python3 convert-pth-to-ggml.py models/7B/ 1
 
 # quantize the model to 4-bits
-./quantize ./models/7B/ggml-model-f16.bin ./models/7B/ggml-model-q4_0.bin 2
+./quantize.sh 7B
 
 # run the inference
 ./main -m ./models/7B/ggml-model-q4_0.bin -t 8 -n 128
 ```
 
-For the bigger models, there are a few extra quantization steps. For example, for LLaMA-13B, converting to FP16 format
-will create 2 ggml files, instead of one:
-
-```bash
-ggml-model-f16.bin
-ggml-model-f16.bin.1
-```
-
-You need to quantize each of them separately like this:
-
-```bash
-./quantize ./models/13B/ggml-model-f16.bin   ./models/13B/ggml-model-q4_0.bin 2
-./quantize ./models/13B/ggml-model-f16.bin.1 ./models/13B/ggml-model-q4_0.bin.1 2
-```
-
-Everything else is the same. Simply run:
-
-```bash
-./main -m ./models/13B/ggml-model-q4_0.bin -t 8 -n 128
-```
-
-The number of files generated for each model is as follows:
-
-```
-7B  -> 1 file
-13B -> 2 files
-30B -> 4 files
-65B -> 8 files
-```
-
 When running the larger models, make sure you have enough disk space to store all the intermediate files.
 
+TODO: add model disk/mem requirements
+
 ### Interactive mode
 
 If you want a more ChatGPT-like experience, you can run in interactive mode by passing `-i` as a parameter.

quantize.sh

@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+
+if ! [[ "$1" =~ ^[0-9]{1,2}B$ ]]; then
+    echo
+    echo "Usage: quantize.sh 7B|13B|30B|65B [--remove-f16]"
+    echo
+    exit 1
+fi
+
+for i in `ls models/$1/ggml-model-f16.bin*`; do
+    ./quantize "$i" "${i/f16/q4_0}" 2
+    if [[ "$2" == "--remove-f16" ]]; then
+        rm "$i"
+    fi
+done