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Argument Parser - Command line argument parsing for benchmark
"""
import argparse
from pathlib import Path
MODEL_NAME_CHOICES = [
"dream",
"sdar",
"sdar_moe",
"fast_dllm_v2",
"llada",
"llada2",
"llada2_moe",
"llada2_mini",
"llada2dot1_mini",
"llada2_mini_dmax",
]
DECODING_STRATEGY_CHOICES = ["d2f", "multi_bd", "dmax"]
TOKEN_MERGE_MODE_CHOICES = ["dmax_topk", "iter_smooth_topk"]
ATTN_IMPL_CHOICES = ["triton", "naive"]
MOE_GEMM_IMPL_CHOICES = ["triton", "vllm", "vllm_modular", "naive"]
MOE_DISPATCHER_BACKEND_CHOICES = ["standard", "naive", "deepep"]
DEEP_EP_MODE_CHOICES = ["normal", "low_latency", "auto"]
def create_argument_parser() -> argparse.ArgumentParser:
"""
Create and configure argument parser for benchmark
Returns:
Configured ArgumentParser instance
"""
parser = argparse.ArgumentParser(
description="Diffulex Benchmark using lm-evaluation-harness",
formatter_class=argparse.RawDescriptionHelpFormatter,
epilog="""
Examples:
# Using configuration file (recommended)
python -m diffulex_bench.main --config diffulex_bench/configs/example.yml
# Using command line arguments
python -m diffulex_bench.main \\
--model-path /path/to/model \\
--dataset gsm8k \\
--dataset-limit 100 \\
--output-dir ./results
# With custom model settings
python -m diffulex_bench.main \\
--model-path /path/to/model \\
--model-name dream \\
--decoding-strategy d2f \\
--dataset gsm8k \\
--temperature 0.0 \\
--max-tokens 256
""",
)
# Logging arguments
parser.add_argument(
"--log-file",
type=str,
default=None,
help="Log file path (optional)",
)
parser.add_argument(
"--log-level",
type=str,
default="INFO",
choices=["DEBUG", "INFO", "WARNING", "ERROR"],
help="Logging level",
)
# Configuration file
parser.add_argument(
"--config",
type=str,
help="Configuration file path (YAML or JSON). Default: configs/example.yml",
)
# Model arguments
parser.add_argument(
"--model-path",
type=str,
help="Model path",
)
parser.add_argument(
"--tokenizer-path",
type=str,
default=None,
help="Tokenizer path (defaults to model-path)",
)
parser.add_argument(
"--model-name",
type=str,
default="dream",
choices=MODEL_NAME_CHOICES,
help="Model name",
)
parser.add_argument(
"--decoding-strategy",
type=str,
default="d2f",
choices=DECODING_STRATEGY_CHOICES,
help="Decoding strategy (d2f, multi_bd, dmax)",
)
parser.add_argument(
"--sampling-mode",
type=str,
default=None,
choices=["naive", "edit"],
help="Sampler behavior mode",
)
parser.add_argument(
"--mask-token-id",
type=int,
default=151666,
help="Mask token ID",
)
# Inference arguments
parser.add_argument(
"--tensor-parallel-size",
type=int,
default=1,
help="Tensor parallel size",
)
parser.add_argument(
"--data-parallel-size",
type=int,
default=1,
help="Data parallel size",
)
parser.add_argument(
"--expert-parallel-size",
type=int,
default=None,
help="Expert parallel size",
)
parser.add_argument(
"--gpu-memory-utilization",
type=float,
default=0.9,
help="GPU memory utilization",
)
parser.add_argument(
"--max-model-len",
type=int,
default=2048,
help="Maximum model length",
)
parser.add_argument(
"--max-num-batched-tokens",
type=int,
default=4096,
help="Maximum number of batched tokens",
)
parser.add_argument(
"--max-num-seqs",
type=int,
default=None,
help="(Deprecated) Maximum number of sequences; use --max-num-reqs",
)
parser.add_argument(
"--max-num-reqs",
type=int,
default=None,
help="Maximum number of requests",
)
# Sampling arguments
parser.add_argument(
"--temperature",
type=float,
default=0.0,
help="Sampling temperature",
)
parser.add_argument(
"--max-tokens",
type=int,
default=256,
help="Maximum tokens to generate",
)
parser.add_argument(
"--max-nfe",
type=int,
default=None,
help="Maximum number of forward evaluations (NFE) allowed per request; omit to auto-derive from per-request avg TPF and max_tokens",
)
parser.add_argument(
"--max-repetition-run",
type=int,
default=None,
help="Kill a request when its generated suffix ends with this many identical consecutive tokens",
)
parser.add_argument(
"--ignore-eos",
action="store_true",
help="Ignore EOS token",
)
# Dataset arguments
parser.add_argument(
"--dataset",
type=str,
default="gsm8k_diffulex",
help="lm-eval task name (bundled offline: gsm8k_diffulex, math500_diffulex, humaneval_diffulex, ...)",
)
parser.add_argument(
"--include-path",
type=str,
default=None,
help="lm-eval --include_path for external tasks (default: packaged diffulex_bench/tasks). Set to empty to disable.",
)
parser.add_argument(
"--dataset-split",
type=str,
default="test",
help="Dataset split",
)
parser.add_argument(
"--dataset-limit",
type=int,
default=None,
help="Limit number of samples",
)
parser.add_argument(
"--dataset-data-files",
type=str,
default=None,
help="Override task YAML `dataset_kwargs.data_files` with this JSON path",
)
# Output arguments
parser.add_argument(
"--output-dir",
type=str,
default="benchmark_results",
help="Output base directory (each run may create a run_* subfolder; see --use-run-subdirectory)",
)
parser.add_argument(
"--use-run-subdirectory",
action=argparse.BooleanOptionalAction,
default=None,
help="Write this run under output_dir/run_<timestamp>_<task>/ (default: true; override YAML when set)",
)
parser.add_argument(
"--save-results",
action="store_true",
default=True,
help="Save results to file",
)
parser.add_argument(
"--no-save-results",
dest="save_results",
action="store_false",
help="Do not save results to file",
)
parser.add_argument(
"--confirm-run-unsafe-code",
action=argparse.BooleanOptionalAction,
default=None,
help="Allow lm-eval code tasks marked unsafe_code=true to run generated code (default: true).",
)
# LoRA arguments
parser.add_argument(
"--use-lora",
action="store_true",
help="Use LoRA",
)
parser.add_argument(
"--lora-path",
type=str,
default="",
help="LoRA path",
)
parser.add_argument(
"--pre-merge-lora",
action="store_true",
dest="pre_merge_lora",
help="Merge LoRA into base weights at load to avoid per-forward compute",
)
# Engine arguments
parser.add_argument(
"--enforce-eager",
action="store_true",
help="Enforce eager mode (disable CUDA graphs)",
)
parser.add_argument(
"--no-enforce-eager",
dest="enforce_eager",
action="store_false",
help="Disable eager mode (enable CUDA graphs when supported)",
)
parser.set_defaults(enforce_eager=None)
parser.add_argument(
"--kv-cache-layout",
type=str,
default="unified",
choices=["unified", "distinct"],
help="KV cache layout",
)
parser.add_argument(
"--enable-prefix-caching",
action=argparse.BooleanOptionalAction,
default=None,
help="Whether to enable prefix caching",
)
parser.add_argument(
"--page-size",
type=int,
default=None,
help="KV cache page size",
)
parser.add_argument(
"--token-merge-mode",
type=str,
default=None,
choices=TOKEN_MERGE_MODE_CHOICES,
help="Token merge mode for DMax/token-merge strategies",
)
parser.add_argument(
"--token-merge-top-k",
type=int,
default=None,
help="Top-k count for token merge metadata",
)
parser.add_argument(
"--token-merge-renormalize",
action=argparse.BooleanOptionalAction,
default=None,
help="Whether to renormalize token merge probabilities",
)
parser.add_argument(
"--token-merge-weight",
type=float,
default=None,
help="Interpolation weight for token merge",
)
parser.add_argument(
"--attn-impl",
type=str,
default=None,
choices=ATTN_IMPL_CHOICES,
help="Attention implementation",
)
parser.add_argument(
"--moe-dispatcher-backend",
type=str,
default=None,
choices=MOE_DISPATCHER_BACKEND_CHOICES,
help="MoE token dispatcher backend",
)
parser.add_argument(
"--moe-gemm-impl",
type=str,
default=None,
choices=MOE_GEMM_IMPL_CHOICES,
help="MoE GEMM implementation",
)
parser.add_argument(
"--deepep-mode",
type=str,
default=None,
choices=DEEP_EP_MODE_CHOICES,
help="DeepEP dispatcher mode",
)
parser.add_argument(
"--deepep-num-max-dispatch-tokens-per-rank",
type=int,
default=None,
help="DeepEP max dispatch tokens per rank",
)
# D2F-specific arguments
parser.add_argument(
"--add-block-threshold",
type=float,
default=0.1,
help="Add block threshold for D2F",
)
parser.add_argument(
"--semi-complete-threshold",
type=float,
default=0.9,
help="Semi-complete threshold for D2F",
)
parser.add_argument(
"--accept-threshold",
type=float,
default=0.9,
help="Accept threshold for D2F",
)
parser.add_argument(
"--remask-threshold",
type=float,
default=0.4,
help="Remask threshold for DMax-style edit decode",
)
parser.add_argument(
"--token-stability-threshold",
type=float,
default=0.0,
help="Minimum non-mask token stability ratio required before adding the next DMax edit block",
)
parser.add_argument(
"--edit-threshold",
type=float,
default=0.0,
help="Confidence threshold for T2T token edits in JointThreshold edit sampler",
)
parser.add_argument(
"--max-post-edit-steps",
type=int,
default=16,
help="Maximum refinement steps after all masks are filled (JointThreshold)",
)
parser.add_argument(
"--block-size",
type=int,
default=None,
dest="block_size",
help="Diffusion block size (aligned with diffulex Config.block_size, default 32)",
)
parser.add_argument(
"--buffer-size",
type=int,
default=None,
help="Number of active diffusion blocks in buffer",
)
parser.add_argument(
"--enable-prefill-cudagraph",
action=argparse.BooleanOptionalAction,
default=None,
help="Enable lazy CUDA graph capture for block-aligned prefill buckets",
)
parser.add_argument(
"--enable-full-static-runner",
action=argparse.BooleanOptionalAction,
default=None,
help="Use the full-static CUDA graph runner for supported multi-block forward passes",
)
parser.add_argument(
"--prefill-cudagraph-max-len",
type=int,
default=None,
help="Maximum prefill bucket length to capture; 0 uses max_model_len",
)
parser.add_argument(
"--enable-torch-compile",
action=argparse.BooleanOptionalAction,
default=None,
help="Enable torch.compile where supported by the engine",
)
parser.add_argument(
"--enable-cudagraph-torch-compile",
action=argparse.BooleanOptionalAction,
default=None,
help="Experimental: allow torch.compile inside decode CUDA graph capture",
)
parser.add_argument(
"--torch-compile-mode",
type=str,
default=None,
help="torch.compile mode",
)
parser.add_argument(
"--auto-max-nfe-warmup-steps",
type=int,
default=None,
help="Warmup steps before deriving max_nfe from the request's average TPF when max_nfe is unset",
)
parser.add_argument(
"--auto-max-nfe-tpf-floor",
type=float,
default=None,
help="Minimum per-request average TPF used when deriving max_nfe from max_tokens",
)
parser.add_argument(
"--multi-block-prefix-full",
action=argparse.BooleanOptionalAction,
default=None,
help="Whether multi_bd should treat the prefix region as fully visible",
)
parser.add_argument(
"--engine-arg",
dest="engine_args",
action="append",
default=[],
metavar="KEY=VALUE",
help="Extra Diffulex engine override. May be repeated; values are parsed with YAML semantics.",
)
return parser
def get_default_config_path() -> Path:
"""
Get default configuration file path
Returns:
Path to default config file
"""
config_dir = Path(__file__).parent / "configs"
default_config = config_dir / "example.yml"
return default_config
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