mirror of
https://github.com/ggml-org/llama.cpp.git
synced 2025-10-31 08:51:55 +00:00
examples : add persistent chat (#1495)
* examples : add persistent chat * examples : fix whitespace --------- Co-authored-by: Georgi Gerganov <ggerganov@gmail.com>
This commit is contained in:
Evan Jones
151
examples/chat-persistent.sh
Executable file
151
examples/chat-persistent.sh
Executable file
@@ -0,0 +1,151 @@
|
||||
#!/bin/bash
|
||||
|
||||
set -euo pipefail
|
||||
|
||||
cd "$(dirname "$0")/.." || exit
|
||||
|
||||
if [[ -z "${PROMPT_CACHE_FILE+x}" || -z "${CHAT_SAVE_DIR+x}" ]]; then
|
||||
echo >&2 "error: PROMPT_CACHE_FILE and CHAT_SAVE_DIR must be provided"
|
||||
exit 1
|
||||
fi
|
||||
|
||||
MODEL="${MODEL:-./models/13B/ggml-model-q4_0.bin}"
|
||||
PROMPT_TEMPLATE="${PROMPT_TEMPLATE:-./prompts/chat.txt}"
|
||||
USER_NAME="${USER_NAME:-User}"
|
||||
AI_NAME="${AI_NAME:-ChatLLaMa}"
|
||||
DATE_TIME="$(date +%H:%M)"
|
||||
DATE_YEAR="$(date +%Y)"
|
||||
|
||||
LOG="${CHAT_SAVE_DIR}/main.log"
|
||||
LOG_BG="${CHAT_SAVE_DIR}/main-bg.log"
|
||||
CUR_PROMPT_FILE="${CHAT_SAVE_DIR}/current-prompt.txt"
|
||||
CUR_PROMPT_CACHE="${CHAT_SAVE_DIR}/current-cache.bin"
|
||||
NEXT_PROMPT_FILE="${CHAT_SAVE_DIR}/next-prompt.txt"
|
||||
NEXT_PROMPT_CACHE="${CHAT_SAVE_DIR}/next-cache.bin"
|
||||
|
||||
SESSION_SIZE_MSG_PATTERN='main: session file matches \d+ / \d+'
|
||||
SAMPLE_TIME_MSG_PATTERN='sample time =\s+\d+.\d+ ms /\s+\d+'
|
||||
SED_DELETE_MESSAGES="/^(${USER_NAME}:|${AI_NAME}:|\\.\\.\\.)/,\$d"
|
||||
|
||||
CTX_SIZE=2048
|
||||
CTX_ROTATE_POINT=$((CTX_SIZE * 3 / 5)) # REVIEW
|
||||
OPTS=(--model "$MODEL" --ctx_size "$CTX_SIZE" --repeat_last_n 256 "$@")
|
||||
|
||||
# An unbuffered `tail -c+N`
|
||||
skip_bytes() {
|
||||
LANG=C IFS= read -r -n "$1" -d '' c
|
||||
while LANG=C IFS= read -r -n 1 -d '' c; do
|
||||
printf '%s' "$c"
|
||||
done
|
||||
}
|
||||
|
||||
mkdir -p "$CHAT_SAVE_DIR"
|
||||
echo >"$LOG"
|
||||
trap "tail -n100 ${LOG}" EXIT
|
||||
|
||||
if [[ ! -e "$CUR_PROMPT_FILE" ]]; then
|
||||
sed -e "s/\[\[USER_NAME\]\]/${USER_NAME}/g" \
|
||||
-e "s/\[\[AI_NAME\]\]/${AI_NAME}/g" \
|
||||
-e "s/\[\[DATE_TIME\]\]/${DATE_TIME}/g" \
|
||||
-e "s/\[\[DATE_YEAR\]\]/${DATE_YEAR}/g" \
|
||||
"$PROMPT_TEMPLATE" >"$CUR_PROMPT_FILE"
|
||||
fi
|
||||
|
||||
if [[ ! -e "$NEXT_PROMPT_FILE" ]]; then
|
||||
sed -r "$SED_DELETE_MESSAGES" "$CUR_PROMPT_FILE" >"$NEXT_PROMPT_FILE"
|
||||
fi
|
||||
|
||||
if [[ "$(tail -c4 "$NEXT_PROMPT_FILE")" != "..." ]]; then
|
||||
echo '...' >>"$NEXT_PROMPT_FILE"
|
||||
fi
|
||||
|
||||
if [[ ! -e "$PROMPT_CACHE_FILE" ]]; then
|
||||
echo 'Prompt cache does not exist, building...'
|
||||
# Default batch_size to 8 here for better user feedback during initial prompt processing
|
||||
./main 2>>"$LOG" \
|
||||
--batch_size 8 \
|
||||
"${OPTS[@]}" \
|
||||
--prompt-cache "$PROMPT_CACHE_FILE" \
|
||||
--file "$CUR_PROMPT_FILE" \
|
||||
--n_predict 1
|
||||
echo
|
||||
echo 'Done!'
|
||||
fi
|
||||
|
||||
if [[ ! -e "$CUR_PROMPT_CACHE" ]]; then
|
||||
cp "$PROMPT_CACHE_FILE" "$CUR_PROMPT_CACHE"
|
||||
fi
|
||||
if [[ ! -e "$NEXT_PROMPT_CACHE" ]]; then
|
||||
cp "$PROMPT_CACHE_FILE" "$NEXT_PROMPT_CACHE"
|
||||
fi
|
||||
|
||||
printf '%s ' "$(< "$CUR_PROMPT_FILE")"
|
||||
n_tokens=0
|
||||
|
||||
while read -e line; do
|
||||
# Limit generation to remaining context, with a buffer and estimating 2 chars/token for input
|
||||
n_predict=$((CTX_SIZE - n_tokens - ${#line} / 2 - 32))
|
||||
|
||||
# Swap prompts when we're about to run out of context
|
||||
if ((n_predict <= 0)); then
|
||||
wait # for background main (below) to finish with next prompt
|
||||
mv "$NEXT_PROMPT_FILE" "$CUR_PROMPT_FILE"
|
||||
mv "$NEXT_PROMPT_CACHE" "$CUR_PROMPT_CACHE"
|
||||
|
||||
sed -r "$SED_DELETE_MESSAGES" "$CUR_PROMPT_FILE" >"$NEXT_PROMPT_FILE"
|
||||
echo '...' >>"$NEXT_PROMPT_FILE"
|
||||
cp "$PROMPT_CACHE_FILE" "$NEXT_PROMPT_CACHE"
|
||||
|
||||
n_tokens=0
|
||||
n_predict=$((CTX_SIZE / 2))
|
||||
fi
|
||||
|
||||
echo " ${line}" >>"$CUR_PROMPT_FILE"
|
||||
if ((n_tokens > CTX_ROTATE_POINT)); then
|
||||
echo " ${line}" >>"$NEXT_PROMPT_FILE"
|
||||
fi
|
||||
|
||||
n_prompt_len_pre=$(($(wc -c <"$CUR_PROMPT_FILE")))
|
||||
|
||||
printf '%s: ' "$AI_NAME" >>"$CUR_PROMPT_FILE"
|
||||
|
||||
./main 2>>"$LOG" "${OPTS[@]}" \
|
||||
--prompt-cache "$CUR_PROMPT_CACHE" \
|
||||
--prompt-cache-all \
|
||||
--file "$CUR_PROMPT_FILE" \
|
||||
--reverse-prompt "${USER_NAME}:" \
|
||||
--n_predict "$n_predict" |
|
||||
skip_bytes 1 | # skip BOS token added by ./main
|
||||
tee "$CUR_PROMPT_FILE.tmp" | # save prompt + generation to tmp file
|
||||
skip_bytes "$n_prompt_len_pre" # print generation
|
||||
|
||||
mv "$CUR_PROMPT_FILE.tmp" "$CUR_PROMPT_FILE"
|
||||
|
||||
# if we hit n_predict instead of reverse-prompt, we need to add the prompt
|
||||
if [[ "$(tail -n1 "$CUR_PROMPT_FILE")" != "${USER_NAME}:" ]]; then
|
||||
printf '\n%s:' "$USER_NAME"
|
||||
printf '\n%s:' "$USER_NAME" >> "$CUR_PROMPT_FILE"
|
||||
fi
|
||||
|
||||
printf ' '
|
||||
|
||||
# HACK get num tokens from debug message
|
||||
# TODO get both messages in one go
|
||||
if ! session_size_msg="$(tail -n30 "$LOG" | grep -oE "$SESSION_SIZE_MSG_PATTERN")" ||
|
||||
! sample_time_msg="$( tail -n10 "$LOG" | grep -oE "$SAMPLE_TIME_MSG_PATTERN")"; then
|
||||
echo >&2 "Couldn't get number of tokens from ./main output!"
|
||||
exit 1
|
||||
fi
|
||||
|
||||
n_tokens=$(($(cut -d/ -f2 <<<"$session_size_msg") + $(cut -d/ -f2 <<<"$sample_time_msg")))
|
||||
|
||||
if ((n_tokens > CTX_ROTATE_POINT)); then
|
||||
tail -c+$((n_prompt_len_pre + 1)) "$CUR_PROMPT_FILE" >>"$NEXT_PROMPT_FILE"
|
||||
fi
|
||||
|
||||
# Update cache for next prompt in background, ideally during user input
|
||||
./main >>"$LOG_BG" 2>&1 "${OPTS[@]}" \
|
||||
--prompt-cache "$NEXT_PROMPT_CACHE" \
|
||||
--file "$NEXT_PROMPT_FILE" \
|
||||
--n_predict 1 &
|
||||
done
|
||||
Reference in New Issue
Block a user