720 lines
28 KiB
Python
720 lines
28 KiB
Python
import argparse
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import dataclasses
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import logging
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import sys
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from typing import Dict, List, Optional
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from sglang_router import Router
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from sglang_router_rs import PolicyType
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def setup_logger():
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logger = logging.getLogger("router")
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logger.setLevel(logging.INFO)
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formatter = logging.Formatter(
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"[Router (Python)] %(asctime)s - %(levelname)s - %(message)s",
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datefmt="%Y-%m-%d %H:%M:%S",
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)
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handler = logging.StreamHandler()
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handler.setFormatter(formatter)
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logger.addHandler(handler)
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return logger
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@dataclasses.dataclass
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class RouterArgs:
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# Worker configuration
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worker_urls: List[str] = dataclasses.field(default_factory=list)
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host: str = "127.0.0.1"
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port: int = 30000
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# PD-specific configuration
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pd_disaggregation: bool = False # Enable PD disaggregated mode
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prefill_urls: List[tuple] = dataclasses.field(
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default_factory=list
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) # List of (url, bootstrap_port)
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decode_urls: List[str] = dataclasses.field(default_factory=list)
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# Routing policy
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policy: str = "cache_aware"
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prefill_policy: Optional[str] = None # Specific policy for prefill nodes in PD mode
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decode_policy: Optional[str] = None # Specific policy for decode nodes in PD mode
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worker_startup_timeout_secs: int = 300
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worker_startup_check_interval: int = 10
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cache_threshold: float = 0.5
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balance_abs_threshold: int = 32
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balance_rel_threshold: float = 1.0001
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eviction_interval: int = 60
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max_tree_size: int = 2**24
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max_payload_size: int = 256 * 1024 * 1024 # 256MB default for large batches
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dp_aware: bool = False
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api_key: Optional[str] = None
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log_dir: Optional[str] = None
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log_level: Optional[str] = None
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# Service discovery configuration
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service_discovery: bool = False
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selector: Dict[str, str] = dataclasses.field(default_factory=dict)
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service_discovery_port: int = 80
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service_discovery_namespace: Optional[str] = None
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# PD service discovery configuration
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prefill_selector: Dict[str, str] = dataclasses.field(default_factory=dict)
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decode_selector: Dict[str, str] = dataclasses.field(default_factory=dict)
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bootstrap_port_annotation: str = "sglang.ai/bootstrap-port"
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# Prometheus configuration
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prometheus_port: Optional[int] = None
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prometheus_host: Optional[str] = None
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# Request ID headers configuration
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request_id_headers: Optional[List[str]] = None
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# Request timeout in seconds
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request_timeout_secs: int = 600
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# Max concurrent requests for rate limiting
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max_concurrent_requests: int = 64
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# CORS allowed origins
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cors_allowed_origins: List[str] = dataclasses.field(default_factory=list)
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# Retry configuration
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retry_max_retries: int = 3
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retry_initial_backoff_ms: int = 100
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retry_max_backoff_ms: int = 10_000
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retry_backoff_multiplier: float = 2.0
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retry_jitter_factor: float = 0.1
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disable_retries: bool = False
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# Circuit breaker configuration
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cb_failure_threshold: int = 5
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cb_success_threshold: int = 2
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cb_timeout_duration_secs: int = 30
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cb_window_duration_secs: int = 60
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disable_circuit_breaker: bool = False
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@staticmethod
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def add_cli_args(
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parser: argparse.ArgumentParser,
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use_router_prefix: bool = False,
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exclude_host_port: bool = False,
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):
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"""
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Add router-specific arguments to an argument parser.
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Args:
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parser: The argument parser to add arguments to
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use_router_prefix: If True, prefix all arguments with 'router-' to avoid conflicts
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exclude_host_port: If True, don't add host and port arguments (used when inheriting from server)
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"""
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prefix = "router-" if use_router_prefix else ""
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# Worker configuration
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if not exclude_host_port:
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parser.add_argument(
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"--host",
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type=str,
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default=RouterArgs.host,
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help="Host address to bind the router server",
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)
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parser.add_argument(
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"--port",
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type=int,
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default=RouterArgs.port,
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help="Port number to bind the router server",
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)
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parser.add_argument(
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"--worker-urls",
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type=str,
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nargs="*",
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default=[],
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help="List of worker URLs (e.g., http://worker1:8000 http://worker2:8000)",
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)
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# Routing policy configuration
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parser.add_argument(
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f"--{prefix}policy",
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type=str,
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default=RouterArgs.policy,
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choices=["random", "round_robin", "cache_aware", "power_of_two"],
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help="Load balancing policy to use. In PD mode, this is used for both prefill and decode unless overridden",
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)
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parser.add_argument(
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f"--{prefix}prefill-policy",
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type=str,
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default=None,
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choices=["random", "round_robin", "cache_aware", "power_of_two"],
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help="Specific policy for prefill nodes in PD mode. If not specified, uses the main policy",
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)
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parser.add_argument(
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f"--{prefix}decode-policy",
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type=str,
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default=None,
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choices=["random", "round_robin", "cache_aware", "power_of_two"],
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help="Specific policy for decode nodes in PD mode. If not specified, uses the main policy",
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)
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# PD-specific arguments
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parser.add_argument(
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f"--{prefix}pd-disaggregation",
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action="store_true",
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help="Enable PD (Prefill-Decode) disaggregated mode",
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)
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parser.add_argument(
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f"--{prefix}prefill",
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nargs="+",
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action="append",
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help="Prefill server URL and optional bootstrap port. Can be specified multiple times. "
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"Format: --prefill URL [BOOTSTRAP_PORT]. "
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"BOOTSTRAP_PORT can be a port number, 'none', or omitted (defaults to none).",
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)
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parser.add_argument(
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f"--{prefix}decode",
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nargs=1,
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action="append",
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metavar=("URL",),
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help="Decode server URL. Can be specified multiple times.",
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)
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parser.add_argument(
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f"--{prefix}worker-startup-timeout-secs",
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type=int,
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default=RouterArgs.worker_startup_timeout_secs,
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help="Timeout in seconds for worker startup",
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)
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parser.add_argument(
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f"--{prefix}worker-startup-check-interval",
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type=int,
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default=RouterArgs.worker_startup_check_interval,
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help="Interval in seconds between checks for worker startup",
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)
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parser.add_argument(
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f"--{prefix}cache-threshold",
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type=float,
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default=RouterArgs.cache_threshold,
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help="Cache threshold (0.0-1.0) for cache-aware routing",
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)
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parser.add_argument(
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f"--{prefix}balance-abs-threshold",
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type=int,
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default=RouterArgs.balance_abs_threshold,
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help="Load balancing is triggered when (max_load - min_load) > abs_threshold AND max_load > min_load * rel_threshold. Otherwise, use cache aware",
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)
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parser.add_argument(
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f"--{prefix}balance-rel-threshold",
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type=float,
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default=RouterArgs.balance_rel_threshold,
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help="Load balancing is triggered when (max_load - min_load) > abs_threshold AND max_load > min_load * rel_threshold. Otherwise, use cache aware",
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)
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parser.add_argument(
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f"--{prefix}eviction-interval",
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type=int,
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default=RouterArgs.eviction_interval,
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help="Interval in seconds between cache eviction operations",
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)
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parser.add_argument(
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f"--{prefix}max-tree-size",
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type=int,
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default=RouterArgs.max_tree_size,
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help="Maximum size of the approximation tree for cache-aware routing",
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)
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parser.add_argument(
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f"--{prefix}max-payload-size",
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type=int,
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default=RouterArgs.max_payload_size,
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help="Maximum payload size in bytes",
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)
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parser.add_argument(
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f"--{prefix}dp-aware",
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action="store_true",
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help="Enable data parallelism aware schedule",
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)
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parser.add_argument(
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f"--{prefix}api-key",
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type=str,
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default=None,
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help="The api key used for the authorization with the worker. Useful when the dp aware scheduling strategy is enaled.",
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)
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parser.add_argument(
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f"--{prefix}log-dir",
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type=str,
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default=None,
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help="Directory to store log files. If not specified, logs are only output to console.",
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)
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parser.add_argument(
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f"--{prefix}log-level",
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type=str,
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default="info",
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choices=["debug", "info", "warning", "error", "critical"],
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help="Set the logging level. If not specified, defaults to INFO.",
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)
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parser.add_argument(
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f"--{prefix}service-discovery",
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action="store_true",
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help="Enable Kubernetes service discovery",
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)
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parser.add_argument(
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f"--{prefix}selector",
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type=str,
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nargs="+",
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help="Label selector for Kubernetes service discovery (format: key1=value1 key2=value2)",
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)
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parser.add_argument(
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f"--{prefix}service-discovery-port",
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type=int,
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default=RouterArgs.service_discovery_port,
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help="Port to use for discovered worker pods",
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)
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parser.add_argument(
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f"--{prefix}service-discovery-namespace",
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type=str,
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help="Kubernetes namespace to watch for pods. If not provided, watches all namespaces (requires cluster-wide permissions)",
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)
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parser.add_argument(
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f"--{prefix}prefill-selector",
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type=str,
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nargs="+",
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help="Label selector for prefill server pods in PD mode (format: key1=value1 key2=value2)",
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)
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parser.add_argument(
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f"--{prefix}decode-selector",
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type=str,
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nargs="+",
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help="Label selector for decode server pods in PD mode (format: key1=value1 key2=value2)",
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)
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# Prometheus configuration
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parser.add_argument(
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f"--{prefix}prometheus-port",
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type=int,
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default=29000,
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help="Port to expose Prometheus metrics. If not specified, Prometheus metrics are disabled",
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)
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parser.add_argument(
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f"--{prefix}prometheus-host",
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type=str,
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default="127.0.0.1",
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help="Host address to bind the Prometheus metrics server",
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)
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parser.add_argument(
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f"--{prefix}request-id-headers",
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type=str,
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nargs="*",
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help="Custom HTTP headers to check for request IDs (e.g., x-request-id x-trace-id). If not specified, uses common defaults.",
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)
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parser.add_argument(
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f"--{prefix}request-timeout-secs",
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type=int,
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default=RouterArgs.request_timeout_secs,
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help="Request timeout in seconds",
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)
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# Retry configuration
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parser.add_argument(
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f"--{prefix}retry-max-retries",
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type=int,
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default=RouterArgs.retry_max_retries,
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)
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parser.add_argument(
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f"--{prefix}retry-initial-backoff-ms",
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type=int,
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default=RouterArgs.retry_initial_backoff_ms,
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)
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parser.add_argument(
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f"--{prefix}retry-max-backoff-ms",
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type=int,
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default=RouterArgs.retry_max_backoff_ms,
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)
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parser.add_argument(
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f"--{prefix}retry-backoff-multiplier",
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type=float,
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default=RouterArgs.retry_backoff_multiplier,
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)
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parser.add_argument(
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f"--{prefix}retry-jitter-factor",
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type=float,
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default=RouterArgs.retry_jitter_factor,
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)
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parser.add_argument(
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f"--{prefix}disable-retries",
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action="store_true",
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help="Disable retries (equivalent to setting retry_max_retries=1)",
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)
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# Circuit breaker configuration
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parser.add_argument(
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f"--{prefix}cb-failure-threshold",
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type=int,
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default=RouterArgs.cb_failure_threshold,
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)
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parser.add_argument(
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f"--{prefix}cb-success-threshold",
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type=int,
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default=RouterArgs.cb_success_threshold,
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)
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parser.add_argument(
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f"--{prefix}cb-timeout-duration-secs",
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type=int,
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default=RouterArgs.cb_timeout_duration_secs,
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)
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parser.add_argument(
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f"--{prefix}cb-window-duration-secs",
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type=int,
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default=RouterArgs.cb_window_duration_secs,
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)
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parser.add_argument(
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f"--{prefix}disable-circuit-breaker",
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action="store_true",
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help="Disable circuit breaker (equivalent to setting cb_failure_threshold to u32::MAX)",
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)
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parser.add_argument(
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f"--{prefix}max-concurrent-requests",
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type=int,
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default=RouterArgs.max_concurrent_requests,
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help="Maximum number of concurrent requests allowed (for rate limiting)",
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)
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parser.add_argument(
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f"--{prefix}cors-allowed-origins",
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type=str,
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nargs="*",
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default=[],
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help="CORS allowed origins (e.g., http://localhost:3000 https://example.com)",
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)
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@classmethod
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def from_cli_args(
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cls, args: argparse.Namespace, use_router_prefix: bool = False
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) -> "RouterArgs":
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"""
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Create RouterArgs instance from parsed command line arguments.
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Args:
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args: Parsed command line arguments
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use_router_prefix: If True, look for arguments with 'router-' prefix
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"""
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prefix = "router_" if use_router_prefix else ""
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worker_urls = getattr(args, "worker_urls", [])
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# Parse PD URLs
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prefill_urls = cls._parse_prefill_urls(getattr(args, f"{prefix}prefill", None))
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decode_urls = cls._parse_decode_urls(getattr(args, f"{prefix}decode", None))
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return cls(
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worker_urls=worker_urls,
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host=args.host,
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port=args.port,
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pd_disaggregation=getattr(args, f"{prefix}pd_disaggregation", False),
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prefill_urls=prefill_urls,
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decode_urls=decode_urls,
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policy=getattr(args, f"{prefix}policy"),
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prefill_policy=getattr(args, f"{prefix}prefill_policy", None),
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decode_policy=getattr(args, f"{prefix}decode_policy", None),
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worker_startup_timeout_secs=getattr(
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args, f"{prefix}worker_startup_timeout_secs"
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),
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worker_startup_check_interval=getattr(
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args, f"{prefix}worker_startup_check_interval"
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),
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cache_threshold=getattr(args, f"{prefix}cache_threshold"),
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balance_abs_threshold=getattr(args, f"{prefix}balance_abs_threshold"),
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balance_rel_threshold=getattr(args, f"{prefix}balance_rel_threshold"),
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eviction_interval=getattr(args, f"{prefix}eviction_interval"),
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max_tree_size=getattr(args, f"{prefix}max_tree_size"),
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max_payload_size=getattr(args, f"{prefix}max_payload_size"),
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dp_aware=getattr(args, f"{prefix}dp_aware", False),
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api_key=getattr(args, f"{prefix}api_key", None),
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log_dir=getattr(args, f"{prefix}log_dir", None),
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log_level=getattr(args, f"{prefix}log_level", None),
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service_discovery=getattr(args, f"{prefix}service_discovery", False),
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selector=cls._parse_selector(getattr(args, f"{prefix}selector", None)),
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service_discovery_port=getattr(args, f"{prefix}service_discovery_port"),
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service_discovery_namespace=getattr(
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args, f"{prefix}service_discovery_namespace", None
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),
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prefill_selector=cls._parse_selector(
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getattr(args, f"{prefix}prefill_selector", None)
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),
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decode_selector=cls._parse_selector(
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getattr(args, f"{prefix}decode_selector", None)
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),
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bootstrap_port_annotation="sglang.ai/bootstrap-port", # Mooncake-specific annotation
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prometheus_port=getattr(args, f"{prefix}prometheus_port", None),
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prometheus_host=getattr(args, f"{prefix}prometheus_host", None),
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request_id_headers=getattr(args, f"{prefix}request_id_headers", None),
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request_timeout_secs=getattr(
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args, f"{prefix}request_timeout_secs", RouterArgs.request_timeout_secs
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),
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max_concurrent_requests=getattr(
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args,
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f"{prefix}max_concurrent_requests",
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RouterArgs.max_concurrent_requests,
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),
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cors_allowed_origins=getattr(args, f"{prefix}cors_allowed_origins", []),
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retry_max_retries=getattr(args, f"{prefix}retry_max_retries"),
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retry_initial_backoff_ms=getattr(args, f"{prefix}retry_initial_backoff_ms"),
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retry_max_backoff_ms=getattr(args, f"{prefix}retry_max_backoff_ms"),
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retry_backoff_multiplier=getattr(args, f"{prefix}retry_backoff_multiplier"),
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retry_jitter_factor=getattr(args, f"{prefix}retry_jitter_factor"),
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cb_failure_threshold=getattr(args, f"{prefix}cb_failure_threshold"),
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cb_success_threshold=getattr(args, f"{prefix}cb_success_threshold"),
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cb_timeout_duration_secs=getattr(args, f"{prefix}cb_timeout_duration_secs"),
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cb_window_duration_secs=getattr(args, f"{prefix}cb_window_duration_secs"),
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disable_retries=getattr(args, f"{prefix}disable_retries", False),
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disable_circuit_breaker=getattr(
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args, f"{prefix}disable_circuit_breaker", False
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),
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)
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@staticmethod
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def _parse_selector(selector_list):
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if not selector_list:
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return {}
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selector = {}
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for item in selector_list:
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if "=" in item:
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key, value = item.split("=", 1)
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selector[key] = value
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return selector
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|
|
@staticmethod
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|
def _parse_prefill_urls(prefill_list):
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"""Parse prefill URLs from --prefill arguments.
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|
Format: --prefill URL [BOOTSTRAP_PORT]
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Example:
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--prefill http://prefill1:8080 9000 # With bootstrap port
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--prefill http://prefill2:8080 none # Explicitly no bootstrap port
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|
--prefill http://prefill3:8080 # Defaults to no bootstrap port
|
|
"""
|
|
if not prefill_list:
|
|
return []
|
|
|
|
prefill_urls = []
|
|
for prefill_args in prefill_list:
|
|
|
|
url = prefill_args[0]
|
|
|
|
# Handle optional bootstrap port
|
|
if len(prefill_args) >= 2:
|
|
bootstrap_port_str = prefill_args[1]
|
|
# Handle 'none' as None
|
|
if bootstrap_port_str.lower() == "none":
|
|
bootstrap_port = None
|
|
else:
|
|
try:
|
|
bootstrap_port = int(bootstrap_port_str)
|
|
except ValueError:
|
|
raise ValueError(
|
|
f"Invalid bootstrap port: {bootstrap_port_str}. Must be a number or 'none'"
|
|
)
|
|
else:
|
|
# No bootstrap port specified, default to None
|
|
bootstrap_port = None
|
|
|
|
prefill_urls.append((url, bootstrap_port))
|
|
|
|
return prefill_urls
|
|
|
|
@staticmethod
|
|
def _parse_decode_urls(decode_list):
|
|
"""Parse decode URLs from --decode arguments.
|
|
|
|
Format: --decode URL
|
|
Example: --decode http://decode1:8081 --decode http://decode2:8081
|
|
"""
|
|
if not decode_list:
|
|
return []
|
|
|
|
# decode_list is a list of single-element lists due to nargs=1
|
|
return [url[0] for url in decode_list]
|
|
|
|
|
|
def policy_from_str(policy_str: str) -> PolicyType:
|
|
"""Convert policy string to PolicyType enum."""
|
|
policy_map = {
|
|
"random": PolicyType.Random,
|
|
"round_robin": PolicyType.RoundRobin,
|
|
"cache_aware": PolicyType.CacheAware,
|
|
"power_of_two": PolicyType.PowerOfTwo,
|
|
}
|
|
return policy_map[policy_str]
|
|
|
|
|
|
def launch_router(args: argparse.Namespace) -> Optional[Router]:
|
|
"""
|
|
Launch the SGLang router with the configuration from parsed arguments.
|
|
|
|
Args:
|
|
args: Namespace object containing router configuration
|
|
Can be either raw argparse.Namespace or converted RouterArgs
|
|
|
|
Returns:
|
|
Router instance if successful, None if failed
|
|
"""
|
|
logger = logging.getLogger("router")
|
|
try:
|
|
# Convert to RouterArgs if needed
|
|
if not isinstance(args, RouterArgs):
|
|
router_args = RouterArgs.from_cli_args(args)
|
|
else:
|
|
router_args = args
|
|
|
|
# Validate configuration based on mode
|
|
if router_args.pd_disaggregation:
|
|
# Validate PD configuration - skip URL requirements if using service discovery
|
|
if not router_args.service_discovery:
|
|
if not router_args.prefill_urls:
|
|
raise ValueError("PD disaggregation mode requires --prefill")
|
|
if not router_args.decode_urls:
|
|
raise ValueError("PD disaggregation mode requires --decode")
|
|
|
|
# Warn about policy usage in PD mode
|
|
if (
|
|
router_args.prefill_policy
|
|
and router_args.decode_policy
|
|
and router_args.policy
|
|
):
|
|
logger.warning(
|
|
"Both --prefill-policy and --decode-policy are specified. "
|
|
"The main --policy flag will be ignored for PD mode."
|
|
)
|
|
elif (
|
|
router_args.prefill_policy
|
|
and not router_args.decode_policy
|
|
and router_args.policy
|
|
):
|
|
logger.info(
|
|
f"Using --prefill-policy '{router_args.prefill_policy}' for prefill nodes "
|
|
f"and --policy '{router_args.policy}' for decode nodes."
|
|
)
|
|
elif (
|
|
router_args.decode_policy
|
|
and not router_args.prefill_policy
|
|
and router_args.policy
|
|
):
|
|
logger.info(
|
|
f"Using --policy '{router_args.policy}' for prefill nodes "
|
|
f"and --decode-policy '{router_args.decode_policy}' for decode nodes."
|
|
)
|
|
|
|
# Create router with unified constructor
|
|
router = Router(
|
|
worker_urls=(
|
|
[]
|
|
if router_args.service_discovery or router_args.pd_disaggregation
|
|
else router_args.worker_urls
|
|
),
|
|
host=router_args.host,
|
|
port=router_args.port,
|
|
policy=policy_from_str(router_args.policy),
|
|
worker_startup_timeout_secs=router_args.worker_startup_timeout_secs,
|
|
worker_startup_check_interval=router_args.worker_startup_check_interval,
|
|
cache_threshold=router_args.cache_threshold,
|
|
balance_abs_threshold=router_args.balance_abs_threshold,
|
|
balance_rel_threshold=router_args.balance_rel_threshold,
|
|
eviction_interval_secs=router_args.eviction_interval,
|
|
max_tree_size=router_args.max_tree_size,
|
|
max_payload_size=router_args.max_payload_size,
|
|
dp_aware=router_args.dp_aware,
|
|
api_key=router_args.api_key,
|
|
log_dir=router_args.log_dir,
|
|
log_level=router_args.log_level,
|
|
service_discovery=router_args.service_discovery,
|
|
selector=router_args.selector,
|
|
service_discovery_port=router_args.service_discovery_port,
|
|
service_discovery_namespace=router_args.service_discovery_namespace,
|
|
prefill_selector=router_args.prefill_selector,
|
|
decode_selector=router_args.decode_selector,
|
|
prometheus_port=router_args.prometheus_port,
|
|
prometheus_host=router_args.prometheus_host,
|
|
request_timeout_secs=router_args.request_timeout_secs,
|
|
pd_disaggregation=router_args.pd_disaggregation,
|
|
prefill_urls=(
|
|
router_args.prefill_urls if router_args.pd_disaggregation else None
|
|
),
|
|
decode_urls=(
|
|
router_args.decode_urls if router_args.pd_disaggregation else None
|
|
),
|
|
prefill_policy=(
|
|
policy_from_str(router_args.prefill_policy)
|
|
if router_args.prefill_policy
|
|
else None
|
|
),
|
|
decode_policy=(
|
|
policy_from_str(router_args.decode_policy)
|
|
if router_args.decode_policy
|
|
else None
|
|
),
|
|
request_id_headers=router_args.request_id_headers,
|
|
max_concurrent_requests=router_args.max_concurrent_requests,
|
|
cors_allowed_origins=router_args.cors_allowed_origins,
|
|
retry_max_retries=router_args.retry_max_retries,
|
|
retry_initial_backoff_ms=router_args.retry_initial_backoff_ms,
|
|
retry_max_backoff_ms=router_args.retry_max_backoff_ms,
|
|
retry_backoff_multiplier=router_args.retry_backoff_multiplier,
|
|
retry_jitter_factor=router_args.retry_jitter_factor,
|
|
cb_failure_threshold=router_args.cb_failure_threshold,
|
|
cb_success_threshold=router_args.cb_success_threshold,
|
|
cb_timeout_duration_secs=router_args.cb_timeout_duration_secs,
|
|
cb_window_duration_secs=router_args.cb_window_duration_secs,
|
|
disable_retries=router_args.disable_retries,
|
|
disable_circuit_breaker=router_args.disable_circuit_breaker,
|
|
)
|
|
|
|
router.start()
|
|
return router
|
|
|
|
except Exception as e:
|
|
logger.error(f"Error starting router: {e}")
|
|
raise e
|
|
|
|
|
|
class CustomHelpFormatter(
|
|
argparse.RawDescriptionHelpFormatter, argparse.ArgumentDefaultsHelpFormatter
|
|
):
|
|
"""Custom formatter that preserves both description formatting and shows defaults"""
|
|
|
|
pass
|
|
|
|
|
|
def parse_router_args(args: List[str]) -> RouterArgs:
|
|
"""Parse command line arguments and return RouterArgs instance."""
|
|
parser = argparse.ArgumentParser(
|
|
description="""SGLang Router - High-performance request distribution across worker nodes
|
|
|
|
Usage:
|
|
This launcher enables starting a router with individual worker instances. It is useful for
|
|
multi-node setups or when you want to start workers and router separately.
|
|
|
|
Examples:
|
|
# Regular mode
|
|
python -m sglang_router.launch_router --worker-urls http://worker1:8000 http://worker2:8000
|
|
|
|
# PD disaggregated mode with same policy for both
|
|
python -m sglang_router.launch_router --pd-disaggregation \\
|
|
--prefill http://prefill1:8000 9000 --prefill http://prefill2:8000 \\
|
|
--decode http://decode1:8001 --decode http://decode2:8001 \\
|
|
--policy cache_aware
|
|
|
|
# PD mode with optional bootstrap ports
|
|
python -m sglang_router.launch_router --pd-disaggregation \\
|
|
--prefill http://prefill1:8000 9000 \\ # With bootstrap port
|
|
--prefill http://prefill2:8000 none \\ # Explicitly no bootstrap port
|
|
--prefill http://prefill3:8000 \\ # Defaults to no bootstrap port
|
|
--decode http://decode1:8001 --decode http://decode2:8001
|
|
|
|
# PD mode with different policies for prefill and decode
|
|
python -m sglang_router.launch_router --pd-disaggregation \\
|
|
--prefill http://prefill1:8000 --prefill http://prefill2:8000 \\
|
|
--decode http://decode1:8001 --decode http://decode2:8001 \\
|
|
--prefill-policy cache_aware --decode-policy power_of_two
|
|
|
|
""",
|
|
formatter_class=CustomHelpFormatter,
|
|
)
|
|
|
|
RouterArgs.add_cli_args(parser, use_router_prefix=False)
|
|
return RouterArgs.from_cli_args(parser.parse_args(args), use_router_prefix=False)
|
|
|
|
|
|
def main() -> None:
|
|
router_args = parse_router_args(sys.argv[1:])
|
|
launch_router(router_args)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
main()
|