From 3d16f647d10c2a11080d4a7f16ab615727e11004 Mon Sep 17 00:00:00 2001 From: jaime-m-p <> Date: Sat, 20 Jul 2024 22:57:59 +0200 Subject: [PATCH] Update bruteforce test: - Compare tokenizer vocab tokens. - Bruteforce byte token generator. - Find minimal mismatched substring. --- tests/test-tokenizer-random.py | 162 +++++++++++++++++++++++++++------ 1 file changed, 136 insertions(+), 26 deletions(-) diff --git a/tests/test-tokenizer-random.py b/tests/test-tokenizer-random.py index 9ebe6c891..c17a1cfbd 100644 --- a/tests/test-tokenizer-random.py +++ b/tests/test-tokenizer-random.py @@ -116,9 +116,25 @@ class LibLlamaModel: num = self.lib.llama_detokenize(self.model, self.token_ids, len(ids), self.text_buff, len(self.text_buff), remove_special, unparse_special) return str(cast(Buffer, self.ffi.buffer(self.text_buff, num)), encoding="utf-8", errors="replace") # replace errors with '\uFFFD' + def get_vocab(self, detokenize=False) -> list[str]: + vocab: list[str] = [] + num_tokens = self.lib.llama_n_vocab(self.model) + for id in range(num_tokens): + if detokenize: + text = self.detokenize([id], remove_special=False, unparse_special=True) + else: + text = self.lib.llama_token_get_text(self.model, id) + text = self.ffi.string(text) + text = str(text, encoding="utf-8", errors="replace") # replace errors with '\uFFFD' + vocab.append(text) + return vocab + class Tokenizer: + def get_vocab(self, detokenize=False) -> list[str]: + raise NotImplementedError + def encode(self, text: str) -> list[int]: raise NotImplementedError @@ -129,7 +145,7 @@ class Tokenizer: class TokenizerGroundtruth (Tokenizer): def __init__(self, dir_tokenizer: str): - self.model: PreTrainedTokenizer = AutoTokenizer.from_pretrained(dir_tokenizer) + self.model: PreTrainedTokenizer = AutoTokenizer.from_pretrained(dir_tokenizer, trust_remote_code=False) # guess BOS and EOS ids = self.encode("a") assert 1 <= len(ids) <= 3 @@ -138,15 +154,24 @@ class TokenizerGroundtruth (Tokenizer): self.add_bos_token = getattr(self.model, "add_bos_token", add_bos_token) self.add_eos_token = getattr(self.model, "add_eos_token", add_eos_token) # build vocab - tokens = list(self.model.get_vocab().values()) - self.vocab = self.model.batch_decode(tokens, skip_special_tokens=True) - self.vocab = list(sorted(self.vocab)) + self.vocab = self.get_vocab(detokenize=True) # tokens and lists - self.special_tokens = list(self.model.all_special_tokens) - self.added_tokens = self.model.batch_decode(self.model.added_tokens_encoder.values(), skip_special_tokens=False) + self.special_tokens = [self.vocab[i] for i in sorted(self.model.all_special_ids)] + self.added_tokens = [self.vocab[i] for i in sorted(self.model.added_tokens_encoder.values())] self.bos_token = self.model.bos_token self.eos_token = self.model.eos_token + def get_vocab(self, detokenize=False) -> list[str]: + max_token_id = max(self.model.get_vocab().values()) + if detokenize: + ids = list(range(max_token_id + 1)) + vocab = self.model.batch_decode(ids, skip_special_tokens=False) + else: + vocab = [None] * (max_token_id + 1) + for text, id in self.model.get_vocab().items(): + vocab[id] = text + return vocab + def encode(self, text: str) -> list[int]: return self.model.encode(text, add_special_tokens=True) @@ -163,6 +188,9 @@ class TokenizerLlamaCpp (Tokenizer): self.libllama = LibLlama() self.model = LibLlamaModel(self.libllama, vocab_file, mparams=dict(vocab_only=True), cparams=dict(n_ctx=4096)) + def get_vocab(self, detokenize=False) -> list[str]: + return self.model.get_vocab(detokenize) + def encode(self, text: str) -> list[int]: return self.model.tokenize(text, add_special=True, parse_special=True) @@ -253,6 +281,23 @@ def generator_vocab_words(tokenizer: TokenizerGroundtruth) -> Iterator[str]: yield from tokenizer.vocab +def generator_byte_tokens() -> Iterator[str]: + """Brute force check common byte encoding""" + for a, b in ["<>", "[]", "()", ("\\", "")]: + yield from [f"{a}{i}{b}" for i in range(256)] + yield from [f"{a}{i:x}{b}" for i in range(256)] + yield from [f"{a}{i:X}{b}" for i in range(256)] + yield from [f"{a}x{i:x}{b}" for i in range(256)] + yield from [f"{a}x{i:X}{b}" for i in range(256)] + yield from [f"{a}x{i:02x}{b}" for i in range(256)] + yield from [f"{a}x{i:02X}{b}" for i in range(256)] + yield from [f"{a}0x{i:x}{b}" for i in range(256)] + yield from [f"{a}0x{i:X}{b}" for i in range(256)] + yield from [f"{a}0x{i:02x}{b}" for i in range(256)] + yield from [f"{a}0x{i:02X}{b}" for i in range(256)] + yield from [f"{a}{chr(i)}{b}" for i in range(256)] + + def generator_ascii_lr_strip() -> Iterator[str]: WHITESPACES = ["", " ", " "] CHARACTERS = list(chr(i) for i in range(1, 0x80)) + [""] @@ -275,10 +320,11 @@ def generator_apostrophe() -> Iterator[str]: yield char1 + lstrip + "'" + rstrip + char2 yield char1 + char2 + lstrip + "'" + rstrip + "z" yield "a" + lstrip + "'" + rstrip + char1 + char2 + yield "a" + lstrip + "'" + char1 + char2 + rstrip + "z" def generator_added_lr_strip(tokenizer: TokenizerGroundtruth) -> Iterator[str]: - WHITESPACES = ["", " ", " ", "\n", "\r\n", "\n\n", "\t", "\t\t"] + WHITESPACES = ["", " ", " ", "\n", "\r\n", "\n\n", "\t", "\t\t", " "] all_tokens = list(sorted(set(tokenizer.special_tokens + tokenizer.added_tokens))) for token in all_tokens: for lstrip in WHITESPACES: @@ -436,6 +482,7 @@ def compare_tokenizers(tokenizer1: TokenizerGroundtruth, tokenizer2: TokenizerLl t_start = time.perf_counter() encode_errors = 0 decode_errors = 0 + total_tests = 0 MAX_ERRORS = 10 logger.info("%s: %s" % (generator.__qualname__, "ini")) @@ -455,21 +502,44 @@ def compare_tokenizers(tokenizer1: TokenizerGroundtruth, tokenizer2: TokenizerLl t_encode2 += t2 - t1 t_decode1 += t3 - t2 t_decode2 += t4 - t3 - if encode_errors < MAX_ERRORS and ids1 != ids2: - i = find_first_mismatch(ids1, ids2) - ids1 = list(ids1)[max(0, i - 2) : i + 5 + 1] - ids2 = list(ids2)[max(0, i - 2) : i + 5 + 1] + # compare + encode_ok = ids1 == ids2 + decode_ok = check_detokenizer(text, text1, text2) + encode_errors += not encode_ok + decode_errors += not decode_ok + total_tests += 1 + if (encode_errors < MAX_ERRORS and not encode_ok) or (decode_errors < MAX_ERRORS and not decode_ok): + def _compare(text: str): + ids1 = tokenizer1.encode(text) + ids2 = tokenizer2.encode(text) + text1 = tokenizer1.decode(ids1) + text2 = tokenizer2.decode(ids1) + encode_ok = ids1 == ids2 + decode_ok = check_detokenizer(text, text1, text2) + ok = encode_ok and decode_ok + return ok, ids1, ids2, text1, text2 + a, b = 0, len(text) + for step in [64, 32, 16, 8, 4, 2, 1]: + while a < b: + t = max(a, b - step) + if _compare(text[a : t])[0]: + break + b = t + for step in [64, 32, 16, 8, 4, 2, 1]: + while a < b: + t = min(a + step, b) + if _compare(text[t : b])[0]: + break + a = t + ok, ids1, ids2, text1, text2 = _compare(text[a : b]) + assert a <= b and not ok + logger.error(" Text:" + repr(text[a : b])) + logger.error(" " + " ".join(repr(x) + ":" + hex(ord(x)) for x in text[a : b])) logger.error(" Expected: " + str(ids1)) logger.error(" Result: " + str(ids2)) - encode_errors += 1 + logger.error(" Expected: " + " ".join(repr(x) + ":" + hex(ord(x)) for x in text1)) + logger.error(" Result: " + " ".join(repr(x) + ":" + hex(ord(x)) for x in text2)) logger.error(f" {encode_errors=}") - if decode_errors < MAX_ERRORS and not check_detokenizer(text, text1, text2): - i = find_first_mismatch(text1, text2) - text1 = list(text1[max(0, i - 2) : i + 5 + 1]) - text2 = list(text2[max(0, i - 2) : i + 5 + 1]) - logger.error(" Expected: " + " ".join(hex(ord(x)) for x in text1)) - logger.error(" Result: " + " ".join(hex(ord(x)) for x in text2)) - decode_errors += 1 logger.error(f" {decode_errors=}") if encode_errors >= MAX_ERRORS and decode_errors >= MAX_ERRORS: logger.error(f" EXIT: {encode_errors=} {decode_errors=}") @@ -480,6 +550,43 @@ def compare_tokenizers(tokenizer1: TokenizerGroundtruth, tokenizer2: TokenizerLl logger.info(f"{generator.__qualname__}: end, {t_encode1=:.3f} {t_encode2=:.3f} {t_decode1=:.3f} {t_decode2=:.3f} {t_total=:.3f}") +def compare_vocabs(tokenizer1: TokenizerGroundtruth, tokenizer2: TokenizerLlamaCpp): + + MAX_PRINT_ERRORS = 10 + + logger.info("compare_vocabs: ini") + + t_start = time.perf_counter() + + for detokenize in (False, True): + vocab1 = tokenizer1.get_vocab(detokenize) + vocab2 = tokenizer2.get_vocab(detokenize) + if vocab1 != vocab2: + num_errors = 0 + for i in range(max(len(vocab1), len(vocab2))): + text1 = vocab1[i] if i < len(vocab1) else None + text2 = vocab2[i] if i < len(vocab2) else None + if text1 != text2: + # is "[UNUSED_TOKEN_" and "[PAD" valid for all models ? #TODO: use toktypes + if text1 is not None: + text1 = text1.replace("[UNUSED_TOKEN_", "[PAD") + if text2 is not None: + text2 = text2.replace("[UNUSED_TOKEN_", "[PAD") + if text1 is None and (text2 or "").startswith('[PAD'): + text2 = None + if text2 is None and (text1 or "").startswith('[PAD'): + text1 = None + if text1 != text2: + num_errors += 1 + if num_errors < MAX_PRINT_ERRORS: + logger.error(f" {detokenize=} id={i} expected={repr(text1)} result={repr(text2)}") + if num_errors: + logger.error(f" {num_errors=}") + + t_total = time.perf_counter() - t_start + logger.info(f"compare_vocabs: end, {t_total=:.3f}") + + def main(argv: list[str] | None = None): parser = argparse.ArgumentParser() parser.add_argument("vocab_file", type=str, help="path to vocab 'gguf' file") @@ -493,18 +600,21 @@ def main(argv: list[str] | None = None): tokenizer1 = TokenizerGroundtruth(args.dir_tokenizer) tokenizer2 = TokenizerLlamaCpp(args.vocab_file) - # compare_tokenizers(tokenizer1, tokenizer2, generator_custom_text()) - # compare_tokenizers(tokenizer1, tokenizer2, generator_custom_text_edge_cases()) + compare_vocabs(tokenizer1, tokenizer2) + + compare_tokenizers(tokenizer1, tokenizer2, generator_custom_text()) + compare_tokenizers(tokenizer1, tokenizer2, generator_custom_text_edge_cases()) + compare_tokenizers(tokenizer1, tokenizer2, generator_byte_tokens()) compare_tokenizers(tokenizer1, tokenizer2, generator_ascii_lr_strip()) compare_tokenizers(tokenizer1, tokenizer2, generator_apostrophe()) compare_tokenizers(tokenizer1, tokenizer2, generator_unicodes()) compare_tokenizers(tokenizer1, tokenizer2, generator_vocab_words(tokenizer1)) compare_tokenizers(tokenizer1, tokenizer2, generator_added_lr_strip(tokenizer1)) - # compare_tokenizers(tokenizer1, tokenizer2, generator_random_added_tokens(tokenizer1, 10_000)) - # compare_tokenizers(tokenizer1, tokenizer2, generator_random_chars(10_000)) - # compare_tokenizers(tokenizer1, tokenizer2, generator_random_unicodes(10_000)) - # compare_tokenizers(tokenizer1, tokenizer2, generator_random_vocab_chars(tokenizer1, 10_000)) - # compare_tokenizers(tokenizer1, tokenizer2, generator_random_vocab_words(tokenizer1, 5_000)) + compare_tokenizers(tokenizer1, tokenizer2, generator_random_added_tokens(tokenizer1, 10_000)) + compare_tokenizers(tokenizer1, tokenizer2, generator_random_chars(10_000)) + compare_tokenizers(tokenizer1, tokenizer2, generator_random_unicodes(10_000)) + compare_tokenizers(tokenizer1, tokenizer2, generator_random_vocab_chars(tokenizer1, 10_000)) + compare_tokenizers(tokenizer1, tokenizer2, generator_random_vocab_words(tokenizer1, 5_000)) tokenizer2.model.free()