Add CLI commands for compilation

python/mlc_chat/cli/compile.py

@@ -0,0 +1,141 @@
+"""Command line entrypoint of compilation."""
+import argparse
+import json
+import logging
+from pathlib import Path
+from typing import Union
+
+from mlc_chat.compiler.compile import compile  # pylint: disable=redefined-builtin
+from mlc_chat.compiler.model import MODELS
+
+from ..support.auto_config import detect_config
+from ..support.auto_target import detect_target_and_host
+
+logging.basicConfig(
+    level=logging.DEBUG,
+    style="{",
+    datefmt="%Y-%m-%d %H:%M:%S",
+    format="[{asctime}] {levelname} {filename}:{lineno}: {message}",
+)
+
+
+def _parse_config(path: Union[str, Path]) -> Path:
+    try:
+        return detect_config(Path(path))
+    except ValueError as err:
+        raise argparse.ArgumentTypeError(f"No valid config.json in: {path}. Error: {err}")
+
+
+def _parse_output(path: Union[str, Path]) -> Path:
+    path = Path(path)
+    parent = path.parent
+    if not parent.is_dir():
+        raise argparse.ArgumentTypeError(f"Directory does not exist: {parent}")
+    return path
+
+
+def _parse_model_type(model_type: str, config: Path) -> str:
+    if model_type == "auto":
+        with open(config, "r", encoding="utf-8") as config_file:
+            cfg = json.load(config_file)
+        if "model_type" not in cfg:
+            raise ValueError(
+                f"'model_type' not found in: {config}. "
+                f"Please explicitly specify `--model-type` instead"
+            )
+        model_type = cfg["model_type"]
+    if model_type not in MODELS:
+        raise ValueError(f"Unknown model type: {model_type}. Available ones: {list(MODELS.keys())}")
+    return model_type
+
+
+def main():
+    """Parse command line argumennts and call `mlc_llm.compiler.compile`."""
+    parser = argparse.ArgumentParser("MLC LLM Compiler")
+    parser.add_argument(
+        "--config",
+        type=_parse_config,
+        required=True,
+        help="Path to config.json file or to the directory that contains config.json, which is "
+        "a HuggingFace standard that defines model architecture, for example, "
+        "https://huggingface.co/codellama/CodeLlama-7b-Instruct-hf/blob/main/config.json",
+    )
+    parser.add_argument(
+        "--quantization",
+        type=str,
+        required=True,
+        choices=[
+            "q0f16",
+            "q0f32",
+            "q3f16_1",
+            "q3f32_1",
+            "q4f16_1",
+            "q4f16_ft",
+            "q4f32_1",
+        ],
+        help="The quantization format. TBD",
+    )
+    parser.add_argument(
+        "--model-type",
+        type=str,
+        default="auto",
+        choices=["auto"] + list(MODELS.keys()),
+        help="Model architecture, for example, llama. If not set, it is inferred "
+        "from the config.json file.",
+    )
+    parser.add_argument(
+        "--device",
+        type=str,
+        default="auto",
+        help="The GPU device to compile the model to. If not set, it is inferred from locally "
+        "available GPUs.",
+    )
+    parser.add_argument(
+        "--host",
+        type=str,
+        default="auto",
+        choices=[
+            "auto",
+            "arm",
+            "arm64",
+            "aarch64",
+            "x86-64",
+        ],
+        help="The host CPU ISA to compile the model to. If not set, it is inferred from the "
+        "local CPU.",
+    )
+    parser.add_argument(
+        "--opt",
+        type=str,
+        default="",
+        help="Optimization flags.",
+    )
+    parser.add_argument(
+        "--output",
+        "-o",
+        type=_parse_output,
+        required=True,
+        help="The name of the output file. The suffix determines if the output file is a "
+        "shared library or a static library. Available suffixes: "
+        "1) Linux: .so (shared), .a (static); "
+        "2) macOS: .dylib (shared), .a (static); "
+        "3) Windows: .dll (shared), .lib (static); "
+        "4) Android, iOS: .tar (static); "
+        "5) Web: .wasm (web assembly)",
+    )
+    parsed = parser.parse_args()
+    target, build_func = detect_target_and_host(parsed.device, parsed.host)
+    parsed.model_type = _parse_model_type(parsed.model_type, parsed.config)
+    compile(
+        config=parsed.config,
+        quantization=parsed.quantization,
+        model_type=parsed.model_type,
+        target=target,
+        opt=parsed.opt,
+        build_func=build_func,
+        output=parsed.output,
+    )
+
+
+if __name__ == "__main__":
+    main()

python/mlc_chat/compiler/compile.py

@@ -0,0 +1,51 @@
+"""Python entrypoint of compilation."""
+import dataclasses
+import logging
+from io import StringIO
+from pathlib import Path
+from typing import Callable
+
+from tvm import IRModule
+from tvm.target import Target
+
+from ..support.style import bold
+
+logger = logging.getLogger(__name__)
+
+
+@dataclasses.dataclass
+class CompileArgs:
+    """Arguments to MLC LLM's compiler."""
+
+    config: Path
+    quantization: str
+    model_type: str
+    target: Target
+    opt: str
+    build_func: Callable[[IRModule, "CompileArgs"], None]
+    output: Path
+
+
+def _echo_args(args: CompileArgs) -> None:
+    out = StringIO()
+    print(f"{bold('Compiling with arguments:')}", file=out)
+    print(f"  {bold('--config'):<25} {args.config}", file=out)
+    print(f"  {bold('--quantization'):<25} {args.quantization}", file=out)
+    print(f"  {bold('--model-type'):<25} {args.model_type}", file=out)
+    print(f"  {bold('--target'):<25} {args.target.export()}", file=out)
+    print(f"  {bold('--opt'):<25} {args.opt}", file=out)
+    print(f"  {bold('--output'):<25} {args.output}", file=out)
+    print(out.getvalue().rstrip())
+
+
+def compile(  # pylint: disable=too-many-arguments,redefined-builtin
+    config: Path,
+    quantization,
+    model_type: str,
+    target: Target,
+    opt,
+    build_func: Callable[[IRModule, CompileArgs], None],
+    output: Path,
+):
+    args = CompileArgs(config, quantization, model_type, target, opt, build_func, output)
+    _echo_args(args)

python/mlc_chat/compiler/model/__init__.py

@@ -1,2 +1,2 @@
 """Model definition for the compiler."""
-from . import llama, llama_config, llama_parameter
+from .model import MODELS, Model

python/mlc_chat/compiler/model/llama.py → python/mlc_chat/compiler/model/llama_model.py

@@ -156,11 +156,11 @@ def forward(self, inputs: Tensor, total_seq_len: tir.Var, attention_mask: Tensor
 
 
 class LlamaForCasualLM(nn.Module):
-    def __init__(self, config: LlamaConfig, dtype: str = "float32"):
+    def __init__(self, config: LlamaConfig):
         self.model = LlamaModel(config)
         self.lm_head = nn.Linear(config.hidden_size, config.vocab_size, bias=False)
         self.vocab_size = config.vocab_size
-        self.dtype = dtype
+        self.dtype = "float32"
 
     def to(self, dtype: Optional[str] = None):
         super().to(dtype=dtype)

python/mlc_chat/compiler/model/llama_parameter.py

@@ -7,10 +7,11 @@
 import numpy as np
 
 from ..parameter import ExternMapping
-from .llama import LlamaConfig, LlamaForCasualLM
+from .llama_config import LlamaConfig
+from .llama_model import LlamaForCasualLM
 
 
-def hf_torch(model_config: LlamaConfig) -> ExternMapping:
+def huggingface(model_config: LlamaConfig, _) -> ExternMapping:
     """Returns a parameter mapping that maps from the names of MLC LLM parameters to
     the names of HuggingFace PyTorch parameters.
 

python/mlc_chat/compiler/model/model.py

@@ -0,0 +1,37 @@
+"""A centralized registry of all existing model architures and their configurations."""
+import dataclasses
+from pathlib import Path
+from typing import Any, Callable, Dict, Optional
+
+from tvm.relax.frontend import nn
+
+from ..parameter import ExternMapping, QuantizeMapping
+from . import llama_config, llama_model, llama_parameter
+
+ModelConfig = Any
+QuantizeConfig = Any
+
+LoaderType = Callable[[ModelConfig, QuantizeConfig], ExternMapping]
+QuantizerType = Callable[[ModelConfig, QuantizeConfig], QuantizeMapping]
+
+
+@dataclasses.dataclass
+class Model:
+    """All about a model architecture: its configuration, its parameter loader and quantization."""
+
+    model: Callable[[ModelConfig], nn.Module]
+    config: Callable[[Path], ModelConfig]
+    source_loader_huggingface: Optional[LoaderType] = None
+    source_loader_awq: Optional[LoaderType] = None
+    quantizer_group_quant: Optional[QuantizerType] = None
+
+
+MODELS: Dict[str, Model] = {
+    "llama": Model(
+        model=llama_model.LlamaForCasualLM,
+        config=llama_config.LlamaConfig.from_file,
+        source_loader_huggingface=llama_parameter.huggingface,
+        source_loader_awq=None,
+        quantizer_group_quant=None,
+    )
+}

python/mlc_chat/support/auto_config.py

@@ -2,8 +2,12 @@
 import logging
 from pathlib import Path
 
+from .style import green, red
+
 logger = logging.getLogger(__name__)
 
+FOUND = green("Found")
+
 
 def detect_config(config_path: Path) -> Path:
     """Detect and return the path that points to config.json. If config_path is a directory,
@@ -30,5 +34,5 @@ def detect_config(config_path: Path) -> Path:
     else:
         config_json_path = config_path
 
-    logger.info("Found config.json: %s", config_json_path)
+    logger.info("%s model configuration: %s", FOUND, config_json_path)
     return config_json_path