Add chatLLaMa script (#198)

* Add chatLLaMa script

* Fix shellcheck errors and do some cleanup

* Move chatLLaMa script to `examples` directory

* Reduce chatLLaMa context size to 2048

Ref d7def1a752

* Include n_predict to 2048 in examples/chatLLaMa

examples/chatLLaMa

@@ -0,0 +1,53 @@
+#!/bin/bash
+
+cd "$(dirname "$0")/.." || exit
+
+MODEL="${MODEL:-./models/13B/ggml-model-q4_0.bin}"
+USER_NAME="${USER_NAME:-User}"
+AI_NAME="${AI_NAME:-ChatLLaMa}"
+
+# Adjust to the number of CPU cores you want to use.
+N_THREAD="${N_THREAD:-8}"
+# Number of tokens to predict (made it larger than default because we want a long interaction)
+N_PREDICTS="${N_PREDICTS:-2048}"
+
+# Note: you can also override the generation options by specifying them on the command line:
+# For example, override the context size by doing: ./chatLLaMa --ctx_size 1024
+GEN_OPTIONS="${GEN_OPTIONS:---ctx_size 2048 --temp 0.7 --top_k 40 --top_p 0.5 --repeat_last_n 256 --repeat_penalty 1.17647}"
+
+# shellcheck disable=SC2086 # Intended splitting of GEN_OPTIONS
+./main $GEN_OPTIONS \
+  --model "$MODEL" \
+  --threads "$N_THREAD" \
+  --n_predict "$N_PREDICTS" \
+  --color --interactive \
+  --reverse-prompt "${USER_NAME}:" \
+  --prompt "
+Text transcript of a never ending dialog, where ${USER_NAME} interacts with an AI assistant named ${AI_NAME}.
+${AI_NAME} is helpful, kind, honest, friendly, good at writing and never fails to answer ${USER_NAME}’s requests immediately and with details and precision.
+There are no annotations like (30 seconds passed...) or (to himself), just what ${USER_NAME} and ${AI_NAME} say alound to each other.
+The dialog lasts for years, the entirety of it is shared below. It's 10000 pages long.
+The transcript only includes text, it does not include markup like HTML and Markdown.
+
+$USER_NAME: Hello, $AI_NAME!
+$AI_NAME: Hello $USER_NAME! How may I help you today?
+$USER_NAME: What time is it?
+$AI_NAME: It is $(date +%H:%M).
+$USER_NAME: What year is it?
+$AI_NAME: We are in $(date +%Y).
+$USER_NAME: Please tell me the largest city in Europe.
+$AI_NAME: The largest city in Europe is Moscow, the capital of Russia.
+$USER_NAME: What can you tell me about Moscow?
+$AI_NAME: Moscow, on the Moskva River in western Russia, is the nation’s cosmopolitan capital. In its historic core is the Kremlin, a complex that’s home to the president and tsarist treasures in the Armoury. Outside its walls is Red Square, Russia’s symbolic center.
+$USER_NAME: What is a cat?
+$AI_NAME: A cat is a domestic species of small carnivorous mammal. It is the only domesticated species in the family Felidae.
+$USER_NAME: How do I pass command line arguments to a Node.js program?
+$AI_NAME: The arguments are stored in process.argv.
+
+    argv[0] is the path to the Node. js executable.
+    argv[1] is the path to the script file.
+    argv[2] is the first argument passed to the script.
+    argv[3] is the second argument passed to the script and so on.
+$USER_NAME: Name a color.
+$AI_NAME: Blue
+$USER_NAME:" "$@"