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* bench command * bench command * bench command * bench command * bench command --------- Co-authored-by: K11OntheBoat <your_email@example.com>
465 lines
17 KiB
Python
465 lines
17 KiB
Python
# SPDX-License-Identifier: Apache-2.0
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# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
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"""Benchmark offline inference throughput."""
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import argparse
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import dataclasses
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import json
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import os
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import random
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import time
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import warnings
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from typing import Any, Optional
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try:
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import torch
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TORCH_AVAILABLE = True
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except (ImportError, NameError, AttributeError, OSError):
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TORCH_AVAILABLE = False
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from tqdm import tqdm
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from transformers import AutoModelForCausalLM, AutoTokenizer, PreTrainedTokenizerBase
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from fastdeploy.benchmarks.datasets import (
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EBChatDataset,
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EBDataset,
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RandomDataset,
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SampleRequest,
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)
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from fastdeploy.benchmarks.lib.utils import (
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convert_to_pytorch_benchmark_format,
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write_to_json,
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)
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from fastdeploy.engine.args_utils import EngineArgs
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from fastdeploy.engine.request import RequestOutput
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def run_fd(
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requests: list[SampleRequest],
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n: int,
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engine_args: EngineArgs,
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disable_detokenize: bool = False,
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) -> tuple[float, Optional[list[RequestOutput]]]:
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from fastdeploy import LLM, SamplingParams
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llm = LLM(**dataclasses.asdict(engine_args))
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assert all(
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llm.llm_engine.cfg.max_model_len >= (request.prompt_len + request.expected_output_len) for request in requests
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), (
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"Please ensure that max_model_len is greater than the sum of"
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" prompt_len and expected_output_len for all requests."
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)
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# Add the requests to the engine.
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prompts = []
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sampling_params: list[SamplingParams] = []
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for request in requests:
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# 处理tokenized输入
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if "prompt_token_ids" in request.prompt:
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prompt = {
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"prompt_token_ids": request.prompt["prompt_token_ids"],
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"multi_modal_data": getattr(request, "multi_modal_data", None),
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}
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# 处理普通文本输入
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else:
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prompt = {"prompt": str(request.prompt), "multi_modal_data": getattr(request, "multi_modal_data", None)}
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prompts.append(prompt)
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sampling_params.append(
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SamplingParams(
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n=n,
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temperature=1.0,
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top_p=1.0,
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max_tokens=request.expected_output_len,
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)
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)
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outputs = None
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start = time.perf_counter()
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outputs = llm.generate(prompts, sampling_params, use_tqdm=True)
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end = time.perf_counter()
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return end - start, outputs
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def run_fd_chat(
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requests: list[SampleRequest], n: int, engine_args: EngineArgs, disable_detokenize: bool = False
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) -> tuple[float, list[RequestOutput]]:
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"""
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Run vLLM chat benchmark. This function is recommended ONLY for benchmarking
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multimodal models as it properly handles multimodal inputs and chat
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formatting. For non-multimodal models, use run_vllm() instead.
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"""
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from fastdeploy import LLM, SamplingParams
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llm = LLM(**dataclasses.asdict(engine_args))
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assert all(
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llm.llm_engine.cfg.max_model_len >= (request.prompt_len + request.expected_output_len) for request in requests
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), (
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"Please ensure that max_model_len is greater than the sum of "
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"prompt_len and expected_output_len for all requests."
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)
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prompts = []
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sampling_params: list[SamplingParams] = []
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for request in requests:
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prompts.append(request.prompt)
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sampling_params.append(
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SamplingParams(
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n=n,
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temperature=1.0,
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top_p=1.0,
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max_tokens=request.expected_output_len,
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)
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)
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start = time.perf_counter()
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outputs = llm.chat(prompts, sampling_params, use_tqdm=True)
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end = time.perf_counter()
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return end - start, outputs
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def run_hf(
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requests: list[SampleRequest],
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model: str,
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tokenizer: PreTrainedTokenizerBase,
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n: int,
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max_batch_size: int,
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trust_remote_code: bool,
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disable_detokenize: bool = False,
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) -> float:
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llm = AutoModelForCausalLM.from_pretrained(model, torch_dtype=torch.float16, trust_remote_code=trust_remote_code)
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if llm.config.model_type == "llama":
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# To enable padding in the HF backend.
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tokenizer.pad_token = tokenizer.eos_token
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llm = llm.cuda()
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pbar = tqdm(total=len(requests))
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start = time.perf_counter()
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batch: list[str] = []
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max_prompt_len = 0
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max_output_len = 0
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for i in range(len(requests)):
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prompt = requests[i].prompt
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prompt_len = requests[i].prompt_len
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output_len = requests[i].expected_output_len
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# Add the prompt to the batch.
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batch.append(prompt)
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max_prompt_len = max(max_prompt_len, prompt_len)
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max_output_len = max(max_output_len, output_len)
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if len(batch) < max_batch_size and i != len(requests) - 1:
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# Check if we can add more requests to the batch.
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next_prompt_len = requests[i + 1].prompt_len
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next_output_len = requests[i + 1].expected_output_len
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if (max(max_prompt_len, next_prompt_len) + max(max_output_len, next_output_len)) <= 2048:
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# We can add more requests to the batch.
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continue
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# Generate the sequences.
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input_ids = tokenizer(batch, return_tensors="pt", padding=True).input_ids
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llm_outputs = llm.generate(
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input_ids=input_ids.cuda(),
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do_sample=True,
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num_return_sequences=n,
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temperature=1.0,
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top_p=1.0,
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use_cache=True,
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max_new_tokens=max_output_len,
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)
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if not disable_detokenize:
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# Include the decoding time.
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tokenizer.batch_decode(llm_outputs, skip_special_tokens=True)
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pbar.update(len(batch))
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# Clear the batch.
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batch = []
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max_prompt_len = 0
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max_output_len = 0
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end = time.perf_counter()
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return end - start
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def save_to_pytorch_benchmark_format(args: argparse.Namespace, results: dict[str, Any]) -> None:
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pt_records = convert_to_pytorch_benchmark_format(
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args=args,
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metrics={
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"requests_per_second": [results["requests_per_second"]],
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"tokens_per_second": [results["tokens_per_second"]],
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},
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extra_info={k: results[k] for k in ["elapsed_time", "num_requests", "total_num_tokens"]},
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)
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if pt_records:
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# Don't use json suffix here as we don't want CI to pick it up
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pt_file = f"{os.path.splitext(args.output_json)[0]}.pytorch.json"
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write_to_json(pt_file, pt_records)
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def get_requests(args, tokenizer):
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# Common parameters for all dataset types.
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common_kwargs = {
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"dataset_path": args.dataset_path,
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"random_seed": args.seed,
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}
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sample_kwargs = {
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# "tokenizer": tokenizer,
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"lora_path": args.lora_path,
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# "max_loras": args.max_loras,
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"num_requests": args.num_prompts,
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"input_len": args.input_len,
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"output_len": args.output_len,
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}
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if args.dataset_path is None or args.dataset_name == "random":
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sample_kwargs["range_ratio"] = args.random_range_ratio
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sample_kwargs["prefix_len"] = args.prefix_len
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sample_kwargs["tokenizer"] = tokenizer
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dataset_cls = RandomDataset
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elif args.dataset_name == "EB":
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dataset_cls = EBDataset
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elif args.dataset_name == "EBChat":
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dataset_cls = EBChatDataset
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else:
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raise ValueError(f"Unknown dataset name: {args.dataset_name}")
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# Remove None values
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sample_kwargs = {k: v for k, v in sample_kwargs.items() if v is not None}
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return dataset_cls(**common_kwargs).sample(**sample_kwargs)
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def validate_args(args):
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"""
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Validate command-line arguments.
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"""
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# === Deprecation and Defaulting ===
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if args.dataset is not None:
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warnings.warn(
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"The '--dataset' argument will be deprecated in the next release. "
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"Please use '--dataset-name' and '--dataset-path' instead.",
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stacklevel=2,
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)
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args.dataset_path = args.dataset
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if not getattr(args, "tokenizer", None):
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args.tokenizer = args.model
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# === Backend Validation ===
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valid_backends = {"fastdeploy", "hf", "fastdeploy-chat"}
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if args.backend not in valid_backends:
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raise ValueError(f"Unsupported backend: {args.backend}")
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# === Dataset Configuration ===
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if not args.dataset and not args.dataset_path:
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print("When dataset path is not set, it will default to random dataset")
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args.dataset_name = "random"
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if args.input_len is None:
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raise ValueError("input_len must be provided for a random dataset")
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# === Dataset Name Specific Checks ===
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# --hf-subset and --hf-split: only used
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# when dataset_name is 'hf'
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if args.dataset_name != "hf" and (
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getattr(args, "hf_subset", None) is not None or getattr(args, "hf_split", None) is not None
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):
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warnings.warn(
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"--hf-subset and --hf-split will be ignored \
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since --dataset-name is not 'hf'.",
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stacklevel=2,
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)
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# elif args.dataset_name == "hf":
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# if args.dataset_path in (
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# VisionArenaDataset.SUPPORTED_DATASET_PATHS.keys()
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# | ConversationDataset.SUPPORTED_DATASET_PATHS):
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# assert args.backend == "vllm-chat", f"{args.dataset_path} needs to use vllm-chat as the backend." #noqa: E501
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# elif args.dataset_path in (InstructCoderDataset.SUPPORTED_DATASET_PATHS
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# | AIMODataset.SUPPORTED_DATASET_PATHS):
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# assert args.backend == "vllm", f"{args.dataset_path} needs to use vllm as the backend." #noqa: E501
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# else:
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# raise ValueError(
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# f"{args.dataset_path} is not supported by hf dataset.")
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# --random-range-ratio: only used when dataset_name is 'random'
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if args.dataset_name != "random" and args.random_range_ratio is not None:
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warnings.warn(
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"--random-range-ratio will be ignored since \
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--dataset-name is not 'random'.",
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stacklevel=2,
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)
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# --prefix-len: only used when dataset_name is 'random', 'sonnet', or not
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# set.
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if args.dataset_name not in {"random", "sonnet", None} and args.prefix_len is not None:
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warnings.warn(
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"--prefix-len will be ignored since --dataset-name\
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is not 'random', 'sonnet', or not set.",
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stacklevel=2,
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)
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# === LoRA Settings ===
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if getattr(args, "enable_lora", False) and args.lora_path is None:
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raise ValueError("LoRA path must be provided when enable_lora is True")
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# === Backend-specific Validations ===
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if args.backend == "hf" and args.hf_max_batch_size is None:
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raise ValueError("HF max batch size is required for HF backend")
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if args.backend != "hf" and args.hf_max_batch_size is not None:
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raise ValueError("HF max batch size is only for HF backend.")
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if args.backend in {"hf", "mii"} and getattr(args, "quantization", None) is not None:
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raise ValueError("Quantization is only for vLLM backend.")
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def add_cli_args(parser: argparse.ArgumentParser):
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parser.add_argument("--backend", type=str, choices=["fastdeploy", "hf", "fastdeploy-chat"], default="fastdeploy")
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parser.add_argument(
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"--dataset-name",
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type=str,
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choices=["EBChat", "random", "EB"],
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help="Name of the dataset to benchmark on.",
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default="random",
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)
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parser.add_argument(
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"--dataset",
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type=str,
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default=None,
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help="Path to the ShareGPT dataset, will be deprecated in\
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the next release. The dataset is expected to "
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"be a json in form of list[dict[..., conversations: "
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"list[dict[..., value: <prompt_or_response>]]]]",
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)
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parser.add_argument("--dataset-path", type=str, default=None, help="Path to the dataset")
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parser.add_argument("--input-len", type=int, default=None, help="Input prompt length for each request")
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parser.add_argument(
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"--output-len",
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type=int,
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default=None,
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help="Output length for each request. Overrides the " "output length from the dataset.",
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)
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parser.add_argument("--n", type=int, default=1, help="Number of generated sequences per prompt.")
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parser.add_argument("--num-prompts", type=int, default=50, help="Number of prompts to process.")
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parser.add_argument("--hf-max-batch-size", type=int, default=None, help="Maximum batch size for HF backend.")
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parser.add_argument(
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"--output-json", type=str, default=None, help="Path to save the throughput results in JSON format."
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)
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parser.add_argument(
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"--disable-frontend-multiprocessing",
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action="store_true",
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default=False,
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help="Disable decoupled async engine frontend.",
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)
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parser.add_argument(
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"--disable-detokenize",
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action="store_true",
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help=("Do not detokenize the response (i.e. do not include " "detokenization time in the measurement)"),
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)
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# LoRA
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parser.add_argument(
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"--lora-path",
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type=str,
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default=None,
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help="Path to the lora adapters to use. This can be an absolute path, "
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"a relative path, or a Hugging Face model identifier.",
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)
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parser.add_argument(
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"--prefix-len",
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type=int,
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default=0,
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help="Number of fixed prefix tokens before the random " "context in a request (default: 0).",
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)
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# random dataset
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parser.add_argument(
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"--random-range-ratio",
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type=float,
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default=0.0,
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help="Range ratio for sampling input/output length, "
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"used only for RandomDataset. Must be in the range [0, 1) to define "
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"a symmetric sampling range "
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"[length * (1 - range_ratio), length * (1 + range_ratio)].",
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)
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# hf dtaset
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parser.add_argument("--hf-subset", type=str, default=None, help="Subset of the HF dataset.")
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parser.add_argument("--hf-split", type=str, default=None, help="Split of the HF dataset.")
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parser.add_argument(
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"--trust_remote_code",
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action="store_true",
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help="Sets trust_remote_code to True to execute code to create HF Datasets from the Hub",
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)
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parser = EngineArgs.add_cli_args(parser)
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parser.set_defaults(enable_prefix_caching=False)
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def main(args: argparse.Namespace):
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if args.tokenizer is None:
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args.tokenizer = args.model
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validate_args(args)
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if args.seed is None:
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args.seed = 0
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random.seed(args.seed)
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# Sample the requests.
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if args.backend == "hf":
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tokenizer = AutoTokenizer.from_pretrained(args.tokenizer, trust_remote_code=args.trust_remote_code)
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else:
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tokenizer = None
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requests = get_requests(args, tokenizer)
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# is_multi_modal = any(request.multi_modal_data is not None
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# for request in requests)
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request_outputs: Optional[list[RequestOutput]] = None
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if args.backend == "fastdeploy":
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elapsed_time, request_outputs = run_fd(
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requests, args.n, EngineArgs.from_cli_args(args), args.disable_detokenize
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)
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elif args.backend == "hf":
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if not TORCH_AVAILABLE:
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raise Exception("PyTorch is not available.")
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else:
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assert args.tensor_parallel_size == 1
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elapsed_time = run_hf(
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requests,
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args.model,
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tokenizer,
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args.n,
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args.hf_max_batch_size,
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args.trust_remote_code,
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args.disable_detokenize,
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)
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elif args.backend == "fastdeploy-chat":
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elapsed_time, request_outputs = run_fd_chat(
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requests, args.n, EngineArgs.from_cli_args(args), args.disable_detokenize
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)
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else:
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raise ValueError(f"Unknown backend: {args.backend}")
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if request_outputs:
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# Note: with the vllm and vllm-chat backends,
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# we have request_outputs, which we use to count tokens.
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total_prompt_tokens = 0
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total_output_tokens = 0
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for ro in request_outputs:
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if not isinstance(ro, RequestOutput):
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continue
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total_prompt_tokens += len(ro.prompt_token_ids) if ro.prompt_token_ids else 0
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if ro.outputs and hasattr(ro.outputs, "token_ids"):
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total_output_tokens += len(ro.outputs.token_ids)
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total_num_tokens = total_prompt_tokens + total_output_tokens
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else:
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total_num_tokens = sum(r.prompt_len + r.expected_output_len for r in requests)
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total_output_tokens = sum(r.expected_output_len for r in requests)
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total_prompt_tokens = total_num_tokens - total_output_tokens
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print(
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f"Throughput: {len(requests) / elapsed_time:.2f} requests/s, "
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f"{total_num_tokens / elapsed_time:.2f} total tokens/s, "
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f"{total_output_tokens / elapsed_time:.2f} output tokens/s"
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)
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print(f"Total num prompt tokens: {total_prompt_tokens}")
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print(f"Total num output tokens: {total_output_tokens}")
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# Output JSON results if specified
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if args.output_json:
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results = {
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"elapsed_time": elapsed_time,
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"num_requests": len(requests),
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"total_num_tokens": total_num_tokens,
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"requests_per_second": len(requests) / elapsed_time,
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"tokens_per_second": total_num_tokens / elapsed_time,
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}
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with open(args.output_json, "w") as f:
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json.dump(results, f, indent=4)
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save_to_pytorch_benchmark_format(args, results)
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