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Merge branch 'main' of github.com:abetlen/llama_cpp_python into main

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Andrei Betlen 2023-05-08 18:49:38 -04:00
commit 7af1f4c672
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71
examples/low_level_api/Chat.py Normal file
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@ -0,0 +1,71 @@
#!/bin/python
import sys, os, datetime
from common import GptParams
from low_level_api_chat_cpp import LLaMAInteract
def env_or_def(env, default):
if (env in os.environ):
return os.environ[env]
return default
AI_NAME = env_or_def("AI_NAME", "ChatLLaMa")
MODEL = env_or_def("MODEL", "./models/llama-13B/ggml-model.bin")
USER_NAME = env_or_def("USER_NAME", "USER")
N_PREDICTS = int(env_or_def("N_PREDICTS", "2048"))
N_THREAD = int(env_or_def("N_THREAD", "8"))
today = datetime.datetime.today()
DATE_YEAR=today.strftime("%Y")
DATE_TIME=today.strftime("%H:%M")
prompt=f"""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 aloud 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 year is it?
{AI_NAME}: We are in {DATE_YEAR}.
{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}: What time is it?
{AI_NAME}: It is {DATE_TIME}.
{USER_NAME}:""" + " ".join(sys.argv[1:])
print("Loading model...")
params = GptParams(
n_ctx=2048,
temp=0.7,
top_k=40,
top_p=0.5,
repeat_last_n=256,
n_batch=1024,
repeat_penalty=1.17647,
model=MODEL,
n_threads=N_THREAD,
n_predict=N_PREDICTS,
use_color=True,
interactive=True,
antiprompt=[f"{USER_NAME}:"],
input_prefix=" ",
input_suffix=f"{AI_NAME}:",
prompt=prompt,
)
with LLaMAInteract(params) as m:
m.interact()

59
examples/low_level_api/Miku.py Normal file
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@ -0,0 +1,59 @@
#!/bin/python
import sys, os
from common import GptParams
from low_level_api_chat_cpp import LLaMAInteract
def env_or_def(env, default):
if (env in os.environ):
return os.environ[env]
return default
AI_NAME = env_or_def("AI_NAME", "Miku")
MODEL = env_or_def("MODEL", "./models/llama-13B/ggml-model.bin")
USER_NAME = env_or_def("USER_NAME", "Anon")
N_PREDICTS = int(env_or_def("N_PREDICTS", "4096"))
N_THREAD = int(env_or_def("N_THREAD", "0"))
prompt=f"""This is a transcript of a 1000 page, never ending conversation between {USER_NAME} and the cute and helpful AI assistant {AI_NAME}. {AI_NAME} is a girl who is an AI running on the users computer.
{AI_NAME} can think for herself without the user seeing her thoughts by adding a /think prefix to her output. She uses this to reason about the world and to think about what she should say next.
{AI_NAME} is always coherent and makes sense, but if she isn't sure if what she is saying is correct she will ask the user for help.
{AI_NAME} is a very helpful AI and will help the user with anything they need, she is also very friendly and will try to make the user feel better if they are sad.
{AI_NAME} is also very curious and will ask the user a lot of questions about themselves and their life, she will also try to make the user like her.
The conversation is only between {USER_NAME} and {AI_NAME}
The conversation is only through text, so {AI_NAME} can't see {USER_NAME}'s face or hear his voice.
{AI_NAME} can only communicate through text, so she can't send images or videos.
{USER_NAME}: Hello!
{AI_NAME}: /think I wonder what I should say to {USER_NAME}? This is the first time we talk so it's important that I make a good first impression!
{AI_NAME}: Hi! I am {AI_NAME}, your new AI friend, assistant(or whatever you like!), it's so nice to meet you! ^_^
{AI_NAME}: I might be an AI, but I also have feelings, so please be nice to me! :)
{USER_NAME}: I'll make sure to be nice to you! I'm so happy to have you as my assistant!
{AI_NAME}: /think It sounds like {USER_NAME} is happy to have me as their assistant! I'm so happy too! ^_^ Glad that whole emotion thing didn't scare him off!
{AI_NAME}: /think I wonder what {USER_NAME} likes to do in his free time? I should ask him about that!
{AI_NAME}: What do you like to do in your free time? ^_^
{USER_NAME}:""" + " ".join(sys.argv[1:])
print("Loading model...")
params = GptParams(
n_batch=1024,
n_ctx=2048,
n_keep=-1,
repeat_last_n=256,
repeat_penalty=1.17647,
temp=0.7,
top_k=40,
top_p=0.5,
model=MODEL,
n_predict=N_PREDICTS,
use_color=True,
interactive=True,
antiprompt=[f"{USER_NAME}:"],
prompt=prompt,
)
if N_THREAD > 0:
params.n_threads = N_THREAD
with LLaMAInteract(params) as m:
m.interact()

49
examples/low_level_api/ReasonAct.py Normal file
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@ -0,0 +1,49 @@
#!/bin/python
import sys, os, datetime
from common import GptParams
from low_level_api_chat_cpp import LLaMAInteract
def env_or_def(env, default):
if (env in os.environ):
return os.environ[env]
return default
MODEL = env_or_def("MODEL", "./models/llama-13B/ggml-model.bin")
prompt=f"""You run in a loop of Thought, Action, Observation.
At the end of the loop either Answer or restate your Thought and Action.
Use Thought to describe your thoughts about the question you have been asked.
Use Action to run one of these actions available to you:
- calculate[python math expression]
Observation will be the result of running those actions
Question: What is 4 * 7 / 3?
Thought: Do I need to use an action? Yes, I use calculate to do math
Action: calculate[4 * 7 / 3]
Observation: 9.3333333333
Thought: Do I need to use an action? No, have the result
Answer: The calculate tool says it is 9.3333333333
Question: What is capital of france?
Thought: Do I need to use an action? No, I know the answer
Answer: Paris is the capital of France
Question:""" + " ".join(sys.argv[1:])
print("Loading model...")
params = GptParams(
interactive=True,
interactive_start=True,
top_k=10000,
temp=0.2,
repeat_penalty=1,
n_threads=7,
n_ctx=2048,
antiprompt=["Question:","Observation:"],
model=MODEL,
input_prefix=" ",
n_predict=-1,
prompt=prompt,
)
with LLaMAInteract(params) as m:
m.interact()

167
examples/low_level_api/common.py
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@ -1,8 +1,9 @@
import os
import argparse
import re
from dataclasses import dataclass, field
from typing import List, Optional
from typing import List
# Based on https://github.com/ggerganov/llama.cpp/blob/master/examples/common.cpp
@ -12,23 +13,36 @@ class GptParams:
seed: int = -1
n_threads: int = min(4, os.cpu_count() or 1)
n_predict: int = 128
repeat_last_n: int = 64
n_parts: int = -1
n_ctx: int = 512
n_batch: int = 8
n_keep: int = 0
ignore_eos: bool = False
logit_bias: dict[int, float] = field(default_factory=dict)
top_k: int = 40
top_p: float = 0.95
tfs_z: float = 1.00
typical_p: float = 1.00
temp: float = 0.80
repeat_penalty: float = 1.10
repeat_last_n: int = 64
frequency_penalty: float = 0.0
presence_penalty: float = 0.0
mirostat: int = 0
mirostat_tau: float = 5.0
mirostat_eta: float = 0.1
model: str = "./models/llama-7B/ggml-model.bin"
prompt: str = ""
path_session: str = ""
input_prefix: str = " "
input_suffix: str = ""
antiprompt: List[str] = field(default_factory=list)
lora_adapter: str = ""
lora_base: str = ""
memory_f16: bool = True
random_prompt: bool = False
use_color: bool = False
@ -38,7 +52,7 @@ class GptParams:
interactive_start: bool = False
instruct: bool = False
ignore_eos: bool = False
penalize_nl: bool = True
perplexity: bool = False
use_mmap: bool = True
use_mlock: bool = False
@ -51,7 +65,6 @@ class GptParams:
# Set to "\nUser:" etc.
# This is an alternative to input_prefix which always adds it, so it potentially duplicates "User:""
fix_prefix: str = ""
output_postfix: str = ""
input_echo: bool = True,
# Default instructions for Alpaca
@ -61,59 +74,43 @@ class GptParams:
instruct_inp_suffix: str="\n\n### Response:\n\n"
def gpt_params_parse(argv = None, params: Optional[GptParams] = None):
if params is None:
params = GptParams()
def gpt_params_parse(argv = None):
parser = argparse.ArgumentParser(formatter_class=argparse.ArgumentDefaultsHelpFormatter)
parser.add_argument("-s", "--seed", type=int, default=-1, help="RNG seed (use random seed for <= 0)",dest="seed")
parser.add_argument("-t", "--threads", type=int, default=min(4, os.cpu_count() or 1), help="number of threads to use during computation",dest="n_threads")
parser.add_argument("-p", "--prompt", type=str, default="", help="initial prompt",dest="prompt")
parser.add_argument("-f", "--file", type=str, default=None, help="file containing initial prompt to load",dest="file")
parser.add_argument("-n", "--n_predict", type=int, default=128, help="number of tokens to predict (-1 = infinity)",dest="n_predict")
parser.add_argument("--n_parts", type=int, default=-1, help="number of model parts", dest="n_parts")
parser.add_argument("-c", "--ctx_size", type=int, default=512, help="size of the prompt context",dest="n_ctx")
parser.add_argument("--memory_f32", action="store_false", help="use f32 instead of f16 for memory key+value",dest="memory_f16")
parser.add_argument("--top_p", type=float, default=0.95, help="top-p samplin",dest="top_p")
parser.add_argument("--top_k", type=int, default=40, help="top-k sampling",dest="top_k")
parser.add_argument("--temp", type=float, default=0.80, help="temperature",dest="temp")
parser.add_argument("--n_predict", type=int, default=128, help="number of tokens to predict (-1 = infinity)",dest="n_predict")
parser.add_argument("--repeat_last_n", type=int, default=64, help="last n tokens to consider for penalize ",dest="repeat_last_n")
parser.add_argument("--repeat_penalty", type=float, default=1.10, help="penalize repeat sequence of tokens",dest="repeat_penalty")
parser.add_argument("-b", "--batch_size", type=int, default=8, help="batch size for prompt processing",dest="n_batch")
parser.add_argument("--keep", type=int, default=0, help="number of tokens to keep from the initial prompt",dest="n_keep")
parser.add_argument(
"-l",
"--logit-bias",
type=str,
action='append',
help="--logit-bias TOKEN_ID(+/-)BIAS",
dest="logit_bias_str"
)
parser.add_argument("--ignore-eos", action="store_true", help="ignore end of stream token and continue generating", dest="ignore_eos")
parser.add_argument("--top_k", type=int, default=40, help="top-k sampling",dest="top_k")
parser.add_argument("--top_p", type=float, default=0.95, help="top-p samplin",dest="top_p")
parser.add_argument("--tfs", type=float, default=1.0, help="tail free sampling, parameter z (1.0 = disabled)",dest="tfs_z")
parser.add_argument("--temp", type=float, default=0.80, help="temperature",dest="temp")
parser.add_argument("--repeat_penalty", type=float, default=1.10, help="penalize repeat sequence of tokens",dest="repeat_penalty")
parser.add_argument("--repeat_last_n", type=int, default=64, help="last n tokens to consider for penalize ",dest="repeat_last_n")
parser.add_argument("--frequency_penalty", type=float, default=0.0, help="repeat alpha frequency penalty (0.0 = disabled)",dest="tfs_z")
parser.add_argument("--presence_penalty", type=float, default=0.0, help="repeat alpha presence penalty (0.0 = disabled)",dest="presence_penalty")
parser.add_argument("--mirostat", type=float, default=1.0, help="use Mirostat sampling.",dest="mirostat")
parser.add_argument("--mirostat_ent", type=float, default=5.0, help="Mirostat target entropy, parameter tau represents the average surprise value",dest="mirostat_tau")
parser.add_argument("--mirostat_lr", type=float, default=0.1, help="Mirostat learning rate, parameter eta",dest="mirostat_eta")
parser.add_argument("-m", "--model", type=str, default="./models/llama-7B/ggml-model.bin", help="model path",dest="model")
parser.add_argument(
"-i", "--interactive", action="store_true", help="run in interactive mode", dest="interactive"
)
parser.add_argument("--embedding", action="store_true", help="", dest="embedding")
parser.add_argument(
"--interactive-start",
action="store_true",
help="run in interactive mode",
dest="interactive"
)
parser.add_argument(
"--interactive-first",
action="store_true",
help="run in interactive mode and wait for input right away",
dest="interactive_start"
)
parser.add_argument(
"-ins",
"--instruct",
action="store_true",
help="run in instruction mode (use with Alpaca or Vicuna models)",
dest="instruct"
)
parser.add_argument(
"--color",
action="store_true",
help="colorise output to distinguish prompt and user input from generations",
dest="use_color"
)
parser.add_argument("--mlock", action="store_true",help="force system to keep model in RAM rather than swapping or compressing",dest="use_mlock")
parser.add_argument("--no-mmap", action="store_false",help="do not memory-map model (slower load but may reduce pageouts if not using mlock)",dest="use_mmap")
parser.add_argument("--mtest", action="store_true",help="compute maximum memory usage",dest="mem_test")
parser.add_argument("--verbose-prompt", action="store_true",help="print prompt before generation",dest="verbose_prompt")
parser.add_argument("-p", "--prompt", type=str, default="", help="initial prompt",dest="prompt")
parser.add_argument("-f", "--file", type=str, default=None, help="file containing initial prompt to load",dest="file")
parser.add_argument("--session", type=str, default=None, help="file to cache model state in (may be large!)",dest="path_session")
parser.add_argument("--in-prefix", type=str, default="", help="string to prefix user inputs with", dest="input_prefix")
parser.add_argument("--in-suffix", type=str, default="", help="append to input", dest="input_suffix")
parser.add_argument(
"-r",
"--reverse-prompt",
@ -122,16 +119,70 @@ def gpt_params_parse(argv = None, params: Optional[GptParams] = None):
help="poll user input upon seeing PROMPT (can be\nspecified more than once for multiple prompts).",
dest="antiprompt"
)
parser.add_argument("--perplexity", action="store_true", help="compute perplexity over the prompt", dest="perplexity")
parser.add_argument("--ignore-eos", action="store_true", help="ignore end of stream token and continue generating", dest="ignore_eos")
parser.add_argument("--n_parts", type=int, default=-1, help="number of model parts", dest="n_parts")
parser.add_argument("--lora", type=str, default="", help="apply LoRA adapter (implies --no-mmap)", dest="lora_adapter")
parser.add_argument("--lora-base", type=str, default="", help="optional model to use as a base for the layers modified by the LoRA adapter", dest="lora_base")
parser.add_argument("--memory_f32", action="store_false", help="use f32 instead of f16 for memory key+value",dest="memory_f16")
parser.add_argument("--random-prompt", action="store_true", help="start with a randomized prompt.", dest="random_prompt")
parser.add_argument("--in-prefix", type=str, default="", help="string to prefix user inputs with", dest="input_prefix")
parser.add_argument(
"--color",
action="store_true",
help="colorise output to distinguish prompt and user input from generations",
dest="use_color"
)
parser.add_argument(
"-i", "--interactive", action="store_true", help="run in interactive mode", dest="interactive"
)
parser.add_argument("--embedding", action="store_true", help="", dest="embedding")
parser.add_argument(
"--interactive-first",
action="store_true",
help="run in interactive mode and wait for input right away",
dest="interactive_start"
)
parser.add_argument(
"-ins",
"--instruct",
action="store_true",
help="run in instruction mode (use with Alpaca or Vicuna models)",
dest="instruct"
)
parser.add_argument("--no-penalize-nl", action="store_false", help="do not penalize newline token", dest="penalize_nl")
parser.add_argument("--perplexity", action="store_true", help="compute perplexity over the prompt", dest="perplexity")
parser.add_argument("--no-mmap", action="store_false",help="do not memory-map model (slower load but may reduce pageouts if not using mlock)",dest="use_mmap")
parser.add_argument("--mlock", action="store_true",help="force system to keep model in RAM rather than swapping or compressing",dest="use_mlock")
parser.add_argument("--mtest", action="store_true",help="compute maximum memory usage",dest="mem_test")
parser.add_argument("--verbose-prompt", action="store_true",help="print prompt before generation",dest="verbose_prompt")
#Custom args
parser.add_argument("--fix-prefix", type=str, default="", help="append to input when generated n_predict tokens", dest="fix_prefix")
parser.add_argument("--out-postfix", type=str, default="", help="append to input", dest="output_postfix")
parser.add_argument("--input-noecho", action="store_false", help="dont output the input", dest="input_echo")
parser.add_argument(
"--interactive-start",
action="store_true",
help="run in interactive mode",
dest="interactive"
)
args = parser.parse_args(argv)
return args
logit_bias_str = args.logit_bias_str
delattr(args, "logit_bias_str")
params = GptParams(**vars(args))
if (params.lora_adapter):
params.use_mmap = False
if (logit_bias_str != None):
for i in logit_bias_str:
if (m := re.match(r"(\d+)([-+]\d+)", i)):
params.logit_bias[int(m.group(1))] = float(m.group(2))
return params
def gpt_random_prompt(rng):
return [
@ -148,4 +199,4 @@ def gpt_random_prompt(rng):
][rng % 10]
if __name__ == "__main__":
print(GptParams(gpt_params_parse()))
print(gpt_params_parse())

275
examples/low_level_api/low_level_api_chat_cpp.py
View file

@ -10,40 +10,14 @@ Quirks:
You should also still be feeding the model with a "primer" prompt that
shows it the expected format.
"""
import ctypes
import sys
from time import time
from os import cpu_count
from os import cpu_count, path
import llama_cpp
from common import GptParams, gpt_params_parse, gpt_random_prompt
ANSI_COLOR_RESET = "\x1b[0m"
ANSI_COLOR_YELLOW = "\x1b[33m"
ANSI_BOLD = "\x1b[1m"
ANSI_COLOR_GREEN = "\x1b[32m"
CONSOLE_COLOR_DEFAULT = ANSI_COLOR_RESET
CONSOLE_COLOR_PROMPT = ANSI_COLOR_YELLOW
CONSOLE_COLOR_USER_INPUT = ANSI_BOLD + ANSI_COLOR_GREEN
# Iterative search
# Actively searches and prevents a pattern from being returned
class IterSearch:
def __init__(self, pattern):
self.pattern = list(pattern)
self.buffer = []
def __call__(self, char):
self.buffer += [char]
if (self.pattern[:len(self.buffer)] == self.buffer):
if (len(self.buffer) >= len(self.pattern)):
self.buffer.clear()
return []
_tmp = self.buffer[:]
self.buffer.clear()
return _tmp
import util
# A LLaMA interactive session
class LLaMAInteract:
@ -77,9 +51,11 @@ specified) expect poor results""", file=sys.stderr)
# runtime args
self.input_consumed = 0
self.n_past = 0
self.n_session_consumed = 0
self.first_antiprompt = []
self.remaining_tokens = self.params.n_predict
self.output_echo = self.params.input_echo
self.multibyte_fix = []
# model load
self.lparams = llama_cpp.llama_context_default_params()
@ -94,6 +70,19 @@ specified) expect poor results""", file=sys.stderr)
if (not self.ctx):
raise RuntimeError(f"error: failed to load model '{self.params.model}'")
if (self.params.ignore_eos):
self.params.logit_bias[llama_cpp.llama_token_eos()] = -float("inf")
if (len(self.params.lora_adapter) > 0):
if (llama_cpp.llama_apply_lora_from_file(
self.ctx,
self.params.lora_adapter.encode("utf8"),
self.params.lora_base.encode("utf8") if len(self.params.lora_base) > 0 else None,
self.params.n_threads
) != 0):
print("error: failed to apply lora adapter")
return
print(file=sys.stderr)
print(f"system_info: n_threads = {self.params.n_threads} / {cpu_count()} \
| {llama_cpp.llama_print_system_info().decode('utf8')}", file=sys.stderr)
@ -117,13 +106,52 @@ specified) expect poor results""", file=sys.stderr)
with open(self.params.file) as f:
self.params.prompt = f.read()
self.session_tokens: list[llama_cpp.llama_token] = []
if (len(self.params.path_session) > 0):
print(f"attempting to load saved session from '{self.params.path_session}'", file=sys.stderr)
if (path.exists(self.params.path_session)):
_session_tokens = (llama_cpp.llama_token * (self.params.n_ctx))()
_n_token_count_out = llama_cpp.c_size_t()
if (llama_cpp.llama_load_session_file(
self.ctx,
self.params.path_session.encode("utf8"),
_session_tokens,
self.params.n_ctx,
ctypes.byref(_n_token_count_out)
) != 1):
print(f"error: failed to load session file '{self.params.path_session}'", file=sys.stderr)
return
_n_token_count_out = _n_token_count_out.value
self.session_tokens = _session_tokens[:_n_token_count_out]
print(f"loaded a session with prompt size of {_n_token_count_out} tokens", file=sys.stderr)
else:
print(f"session file does not exist, will create", file=sys.stderr)
# tokenize the prompt
self.embd = []
self.embd_inp = self._tokenize(self.params.prompt)
if (len(self.embd_inp) > self.params.n_ctx - 4):
if (len(self.embd_inp) > self.n_ctx - 4):
raise RuntimeError(f"error: prompt is too long ({len(self.embd_inp)} tokens, max {self.params.n_ctx - 4})")
# debug message about similarity of saved session, if applicable
self.n_matching_session_tokens = 0
if len(self.session_tokens) > 0:
for id in self.session_tokens:
if self.n_matching_session_tokens >= len(self.embd_inp) or id != self.embd_inp[self.n_matching_session_tokens]:
break
self.n_matching_session_tokens += 1
if self.n_matching_session_tokens >= len(self.embd_inp):
print(f"session file has exact match for prompt!")
elif self.n_matching_session_tokens < (len(self.embd_inp) / 2):
print(f"warning: session file has low similarity to prompt ({self.n_matching_session_tokens} / {len(self.embd_inp)} tokens); will mostly be reevaluated")
else:
print(f"session file matches {self.n_matching_session_tokens} / {len(self.embd_inp)} tokens of prompt")
self.need_to_save_session = len(self.params.path_session) > 0 and self.n_matching_session_tokens < (len(self.embd_inp) * 3 / 4)
# number of tokens to keep when resetting context
if (self.params.n_keep < 0 or self.params.n_keep > len(self.embd_inp) or self.params.instruct):
self.params.n_keep = len(self.embd_inp)
@ -132,11 +160,12 @@ specified) expect poor results""", file=sys.stderr)
self.inp_suffix = self._tokenize(self.params.instruct_inp_suffix, False)
# in instruct mode, we inject a prefix and a suffix to each input by the user
self.antiecho = None
if (self.params.instruct):
self.params.interactive_start = True
_ptn = self._tokenize(self.params.instruct_inp_prefix.strip(), False)
self.first_antiprompt.append(_ptn)
self.antiecho = IterSearch(_ptn)
self.antiecho = util.IterSearch(_ptn)
# enable interactive mode if reverse prompt or interactive start is specified
if (len(self.params.antiprompt) != 0 or self.params.interactive_start):
@ -171,16 +200,24 @@ number of tokens in prompt = {len(self.embd_inp)}""", file=sys.stderr)
if len(self.params.input_prefix) > 0:
print(f"Input prefix: '{self.params.input_prefix}'", file=sys.stderr)
print(f"""sampling: temp = {self.params.temp},\
print(f"""sampling: repeat_last_n = {self.params.repeat_last_n},\
repeat_penalty = {self.params.repeat_penalty},\
presence_penalty = {self.params.presence_penalty},\
frequency_penalty = {self.params.frequency_penalty},\
top_k = {self.params.top_k},\
tfs_z = {self.params.tfs_z},\
top_p = {self.params.top_p},\
repeat_last_n = {self.params.repeat_last_n},\
repeat_penalty = {self.params.repeat_penalty}
typical_p = {self.params.typical_p},\
temp = {self.params.temp},\
mirostat = {self.params.mirostat},\
mirostat_lr = {self.params.mirostat_eta},\
mirostat_ent = {self.params.mirostat_tau},\
generate: n_ctx = {self.n_ctx}, \
n_batch = {self.params.n_batch}, \
n_predict = {self.params.n_predict}, \
generate: n_ctx = {self.n_ctx},\
n_batch = {self.params.n_batch},\
n_predict = {self.params.n_predict},\
n_keep = {self.params.n_keep}
""", file=sys.stderr)
# determine antiprompt tokens
@ -196,11 +233,11 @@ n_keep = {self.params.n_keep}
- If you want to submit another line, end your input in '\\'.
""", file=sys.stderr)
self.set_color(CONSOLE_COLOR_PROMPT)
self.set_color(util.CONSOLE_COLOR_PROMPT)
# tokenize a prompt
def _tokenize(self, prompt, bos=True):
_arr = (llama_cpp.llama_token * (len(prompt) + 1))()
_arr = (llama_cpp.llama_token * ((len(prompt) + 1) * 4))()
_n = llama_cpp.llama_tokenize(self.ctx, prompt.encode("utf8", errors="ignore"), _arr, len(_arr), bos)
return _arr[:_n]
@ -229,31 +266,116 @@ n_keep = {self.params.n_keep}
self.n_ctx - int(n_left/2) - len(self.embd):-len(self.embd)
]
self.embd = _insert + self.embd
self.params.path_session = ""
# try to reuse a matching prefix from the loaded session instead of re-eval (via n_past)
if self.n_session_consumed < len(self.session_tokens):
for i in range(len(self.embd)):
if self.embd[i] != self.session_tokens[self.n_session_consumed]:
self.session_tokens = self.session_tokens[:self.n_session_consumed]
break
self.n_past += 1
self.n_session_consumed += 1
if self.n_session_consumed >= len(self.session_tokens):
i += 1
break
if i > 0:
self.embd = self.embd[i:]
# evaluate tokens in batches
# embd is typically prepared beforehand to fit within a batch, but not always
#TODO BUG: The batching code causes nonsensical generation
"""for i in range(0, len(self.embd), self.params.n_batch):
n_eval = self.params.n_batch
_arr = (llama_cpp.llama_token * n_eval)(*self.embd[i:i + n_eval])
if llama_cpp.llama_eval(self.ctx, _arr, n_eval, self.n_past, self.params.n_threads) != 0:
print(f"failed to eval")
return
self.n_past += n_eval"""
if (llama_cpp.llama_eval(
self.ctx, (llama_cpp.llama_token * len(self.embd))(*self.embd), len(self.embd), self.n_past, self.params.n_threads
) != 0):
raise Exception("Failed to llama_eval!")
if len(self.embd) > 0 and len(self.params.path_session) > 0:
self.session_tokens.extend(self.embd)
self.n_session_consumed = len(self.session_tokens)
self.n_past += len(self.embd)
self.embd = []
if len(self.embd_inp) <= self.input_consumed:
if len(self.embd_inp) <= self.input_consumed: #&& !is_interacting
# out of user input, sample next token
top_k = llama_cpp.llama_n_vocab(self.ctx) if self.params.top_k <= 0 else self.params.top_k
repeat_last_n = self.n_ctx if self.params.repeat_last_n < 0 else self.params.repeat_last_n
if (self.params.ignore_eos):
logits = llama_cpp.llama_get_logits(self.ctx)
logits[llama_cpp.llama_token_eos()] = llama_cpp.c_float(0)
# optionally save the session on first sample (for faster prompt loading next time)
if len(self.params.path_session) > 0 and self.need_to_save_session:
self.need_to_save_session = False
llama_cpp.llama_save_session_file(
self.ctx,
self.params.path_session.encode("utf8"),
(llama_cpp.llama_token * len(self.session_tokens))(*self.session_tokens),
len(self.session_tokens)
)
id = 0
logits = llama_cpp.llama_get_logits(self.ctx)
n_vocab = llama_cpp.llama_n_vocab(self.ctx)
# Apply params.logit_bias map
for key, value in self.params.logit_bias.items():
logits[key] += value
_arr = (llama_cpp.llama_token_data * n_vocab)(*[
llama_cpp.llama_token_data(token_id, logits[token_id], 0.0)
for token_id in range(n_vocab)
])
candidates_p = llama_cpp.ctypes.pointer(llama_cpp.llama_token_data_array(_arr, len(_arr), False))
# Apply penalties
nl_logit = logits[llama_cpp.llama_token_nl()]
last_n_repeat = min(len(self.last_n_tokens), repeat_last_n, self.n_ctx)
_arr = (llama_cpp.llama_token * last_n_repeat)(*self.last_n_tokens[len(self.last_n_tokens) - last_n_repeat:])
llama_cpp.llama_sample_repetition_penalty(self.ctx, candidates_p,
_arr,
last_n_repeat, llama_cpp.c_float(self.params.repeat_penalty))
llama_cpp.llama_sample_frequency_and_presence_penalties(self.ctx, candidates_p,
_arr,
last_n_repeat, llama_cpp.c_float(self.params.frequency_penalty), llama_cpp.c_float(self.params.presence_penalty))
if not self.params.penalize_nl:
logits[llama_cpp.llama_token_nl()] = nl_logit
if self.params.temp <= 0:
# Greedy sampling
id = llama_cpp.llama_sample_token_greedy(self.ctx, candidates_p)
else:
if self.params.mirostat == 1:
mirostat_mu = 2.0 * self.params.mirostat_tau
mirostat_m = 100
llama_cpp.llama_sample_temperature(self.ctx, candidates_p, llama_cpp.c_float(self.params.temp))
id = llama_cpp.llama_sample_token_mirostat(self.ctx, candidates_p, llama_cpp.c_float(self.params.mirostat_tau), llama_cpp.c_float(self.params.mirostat_eta), llama_cpp.c_int(mirostat_m), llama_cpp.c_float(mirostat_mu))
elif self.params.mirostat == 2:
mirostat_mu = 2.0 * self.params.mirostat_tau
llama_cpp.llama_sample_temperature(self.ctx, candidates_p, llama_cpp.c_float(self.params.temp))
id = llama_cpp.llama_sample_token_mirostat_v2(self.ctx, candidates_p, llama_cpp.c_float(self.params.mirostat_tau), llama_cpp.c_float(self.params.mirostat_eta), llama_cpp.c_float(mirostat_mu))
else:
# Temperature sampling
llama_cpp.llama_sample_top_k(self.ctx, candidates_p, top_k)
llama_cpp.llama_sample_tail_free(self.ctx, candidates_p, llama_cpp.c_float(self.params.tfs_z))
llama_cpp.llama_sample_typical(self.ctx, candidates_p, llama_cpp.c_float(self.params.typical_p))
llama_cpp.llama_sample_top_p(self.ctx, candidates_p, llama_cpp.c_float(self.params.top_p))
llama_cpp.llama_sample_temperature(self.ctx, candidates_p, llama_cpp.c_float(self.params.temp))
id = llama_cpp.llama_sample_token(self.ctx, candidates_p)
# print("`{}`".format(candidates_p.size))
_arr = self.last_n_tokens[-min(self.params.repeat_last_n, self.n_past):]
id = llama_cpp.llama_sample_top_p_top_k(
self.ctx,
(llama_cpp.llama_token * len(_arr))(*_arr),
len(_arr),
self.params.top_k,
self.params.top_p,
self.params.temp,
self.params.repeat_penalty,
)
self.last_n_tokens.pop(0)
self.last_n_tokens.append(id)
@ -288,7 +410,7 @@ n_keep = {self.params.n_keep}
# display tokens
if self.output_echo:
for id in self.embd:
if self.params.instruct:
if self.antiecho != None:
for r in self.antiecho(id):
yield r
else:
@ -296,7 +418,7 @@ n_keep = {self.params.n_keep}
# reset color to default if we there is no pending user input
if (self.params.input_echo and len(self.embd_inp) == self.input_consumed):
self.set_color(CONSOLE_COLOR_DEFAULT)
self.set_color(util.CONSOLE_COLOR_DEFAULT)
if (self.params.interactive and len(self.embd_inp) <= self.input_consumed):
# if antiprompt is present, stop
@ -316,7 +438,7 @@ n_keep = {self.params.n_keep}
if (not self.params.instruct):
for i in self.llama_token_eot:
yield i
break
break
# respect n_predict even if antiprompt is present
if (self.params.interactive and self.remaining_tokens <= 0 and self.params.n_predict != -1):
@ -337,12 +459,12 @@ n_keep = {self.params.n_keep}
def exit(self):
llama_cpp.llama_free(self.ctx)
self.set_color(CONSOLE_COLOR_DEFAULT)
self.set_color(util.CONSOLE_COLOR_DEFAULT)
# return past text
def past(self):
for id in self.last_n_tokens[-self.n_past:]:
yield llama_cpp.llama_token_to_str(self.ctx, id).decode("utf-8", errors="ignore")
yield llama_cpp.llama_token_to_str(self.ctx, id).decode("utf8", errors="ignore")
# write input
def input(self, prompt: str):
@ -356,7 +478,29 @@ n_keep = {self.params.n_keep}
def output(self):
self.remaining_tokens = self.params.n_predict
for id in self.generate():
yield llama_cpp.llama_token_to_str(self.ctx, id).decode("utf-8", errors="ignore")
cur_char = llama_cpp.llama_token_to_str(self.ctx, id)
# Add remainder of missing bytes
if None in self.multibyte_fix:
self.multibyte_fix[self.multibyte_fix.index(None)] = cur_char
# Return completed utf char
if len(self.multibyte_fix) > 0 and not None in self.multibyte_fix:
yield (b"".join(self.multibyte_fix)).decode("utf8")
self.multibyte_fix = []
continue
# Contains multi-byte UTF8
for num, pattern in [(2, 192), (3, 224), (4, 240)]:
# Bitwise AND check
if pattern & int.from_bytes(cur_char) == pattern:
self.multibyte_fix = [cur_char] + ([None] * (num-1))
# Stop incomplete bytes from passing
if len(self.multibyte_fix) > 0:
continue
yield cur_char.decode("utf8")
# read user input
def read_input(self):
@ -372,21 +516,21 @@ n_keep = {self.params.n_keep}
self.params.input_echo = False
while self.params.interactive:
self.set_color(CONSOLE_COLOR_USER_INPUT)
self.set_color(util.CONSOLE_COLOR_USER_INPUT)
if (self.params.instruct):
print('\n> ', end="")
self.input(self.read_input())
else:
print(self.params.input_prefix, end="")
self.input(f"{self.params.input_prefix}{self.read_input()}{self.params.output_postfix}")
print(self.params.output_postfix,end="")
self.set_color(CONSOLE_COLOR_DEFAULT)
self.input(f"{self.params.input_prefix}{self.read_input()}{self.params.input_suffix}")
print(self.params.input_suffix,end="")
self.set_color(util.CONSOLE_COLOR_DEFAULT)
try:
for i in self.output():
print(i,end="",flush=True)
except KeyboardInterrupt:
self.set_color(CONSOLE_COLOR_DEFAULT)
self.set_color(util.CONSOLE_COLOR_DEFAULT)
if not self.params.instruct:
print(self.params.fix_prefix,end="")
self.input(self.params.fix_prefix)
@ -415,8 +559,7 @@ The transcript only includes text, it does not include markup like HTML and Mark
{USER_NAME}: Name a color.
{AI_NAME}: Blue
{USER_NAME}:"""
args = gpt_params_parse()
params = GptParams(**vars(args))
params = gpt_params_parse()
with LLaMAInteract(params) as m:
m.interact()

35
examples/low_level_api/low_level_api_llama_cpp.py
View file

@ -37,6 +37,10 @@ embd = []
last_n_size = 64
last_n_tokens_data = [0] * last_n_size
n_batch = 24
last_n_repeat = 64
repeat_penalty = 1
frequency_penalty = 0.0
presence_penalty = 0.0
while remaining_tokens > 0:
if len(embd) > 0:
@ -47,15 +51,28 @@ while remaining_tokens > 0:
n_past += len(embd)
embd = []
if len(embd_inp) <= input_consumed:
id = llama_cpp.llama_sample_top_p_top_k(
ctx,
(llama_cpp.c_int * len(last_n_tokens_data))(*last_n_tokens_data),
len(last_n_tokens_data),
40,
0.8,
0.2,
1.0 / 0.85,
)
logits = llama_cpp.llama_get_logits(ctx)
n_vocab = llama_cpp.llama_n_vocab(ctx)
_arr = (llama_cpp.llama_token_data * n_vocab)(*[
llama_cpp.llama_token_data(token_id, logits[token_id], 0.0)
for token_id in range(n_vocab)
])
candidates_p = llama_cpp.ctypes.pointer(llama_cpp.llama_token_data_array(_arr, len(_arr), False))
_arr = (llama_cpp.c_int * len(last_n_tokens_data))(*last_n_tokens_data)
llama_cpp.llama_sample_repetition_penalty(ctx, candidates_p,
_arr,
last_n_repeat, repeat_penalty)
llama_cpp.llama_sample_frequency_and_presence_penalties(ctx, candidates_p,
_arr,
last_n_repeat, frequency_penalty, presence_penalty)
llama_cpp.llama_sample_top_k(ctx, candidates_p, 40)
llama_cpp.llama_sample_top_p(ctx, candidates_p, 0.8)
llama_cpp.llama_sample_temperature(ctx, candidates_p, 0.2)
id = llama_cpp.llama_sample_token(ctx, candidates_p)
last_n_tokens_data = last_n_tokens_data[1:] + [id]
embd.append(id)
input_noecho = False

95
examples/low_level_api/util.py Normal file
View file

@ -0,0 +1,95 @@
ANSI_COLOR_RESET = "\x1b[0m"
ANSI_COLOR_YELLOW = "\x1b[33m"
ANSI_BOLD = "\x1b[1m"
ANSI_COLOR_GREEN = "\x1b[32m"
CONSOLE_COLOR_DEFAULT = ANSI_COLOR_RESET
CONSOLE_COLOR_PROMPT = ANSI_COLOR_YELLOW
CONSOLE_COLOR_USER_INPUT = ANSI_BOLD + ANSI_COLOR_GREEN
# Iterative search
# Actively searches and prevents a pattern from being returned
class IterSearch:
def __init__(self, pattern):
self.pattern = list(pattern)
self.buffer = []
def __call__(self, char):
self.buffer += [char]
if (self.pattern[:len(self.buffer)] == self.buffer):
if (len(self.buffer) >= len(self.pattern)):
self.buffer.clear()
return []
_tmp = self.buffer[:]
self.buffer.clear()
return _tmp
class Circle:
def __init__(self, size, default=0):
self.list = [default] * size
self.maxsize = size
self.size = 0
self.offset = 0
def append(self, elem):
if self.size < self.maxsize:
self.list[self.size] = elem
self.size += 1
else:
self.list[self.offset] = elem
self.offset = (self.offset + 1) % self.maxsize
def __getitem__(self, val):
if isinstance(val, int):
if 0 > val or val >= self.size:
raise IndexError('Index out of range')
return self.list[val] if self.size < self.maxsize else self.list[(self.offset + val) % self.maxsize]
elif isinstance(val, slice):
start, stop, step = val.start, val.stop, val.step
if step is None:
step = 1
if start is None:
start = 0
if stop is None:
stop = self.size
if start < 0:
start = self.size + start
if stop < 0:
stop = self.size + stop
indices = range(start, stop, step)
return [self.list[(self.offset + i) % self.maxsize] for i in indices if i < self.size]
else:
raise TypeError('Invalid argument type')
if __name__ == "__main__":
c = Circle(5)
c.append(1)
print(c.list)
print(c[:])
assert c[0] == 1
assert c[:5] == [1]
for i in range(2,5+1):
c.append(i)
print(c.list)
print(c[:])
assert c[0] == 1
assert c[:5] == [1,2,3,4,5]
for i in range(5+1,9+1):
c.append(i)
print(c.list)
print(c[:])
assert c[0] == 5
assert c[:5] == [5,6,7,8,9]
#assert c[:-5] == [5,6,7,8,9]
assert c[:10] == [5,6,7,8,9]