add inference benchmark script

Author: matthewdouglas

benchmarking/inference_benchmark.py

@@ -0,0 +1,134 @@
+"""
+Inference benchmarking tool.
+
+Requirements:
+    transformers
+    accelerate
+    bitsandbytes
+    optimum-benchmark
+
+Usage: python inference_benchmark.py model_id
+
+options:
+    -h, --help            show this help message and exit
+    --configs {bf16,fp16,nf4,nf4-dq,int8,int8-decomp} [{bf16,fp16,nf4,nf4-dq,int8,int8-decomp} ...]
+    --bf16
+    --fp16
+    --nf4
+    --nf4-dq
+    --int8
+    --int8-decomp
+    --batches BATCHES [BATCHES ...]
+    --input-length INPUT_LENGTH
+    --out-dir OUT_DIR
+"""
+
+import argparse
+from pathlib import Path
+
+from optimum_benchmark import Benchmark, BenchmarkConfig, InferenceConfig, ProcessConfig, PyTorchConfig
+from optimum_benchmark.logging_utils import setup_logging
+import torch
+
+BFLOAT16_SUPPORT = torch.cuda.get_device_capability()[0] >= 8
+
+WEIGHTS_CONFIGS = {
+    "fp16": {"torch_dtype": "float16", "quantization_scheme": None, "quantization_config": {}},
+    "bf16": {"torch_dtype": "bfloat16", "quantization_scheme": None, "quantization_config": {}},
+    "nf4": {
+        "torch_dtype": "bfloat16" if BFLOAT16_SUPPORT else "float16",
+        "quantization_scheme": "bnb",
+        "quantization_config": {
+            "load_in_4bit": True,
+            "bnb_4bit_quant_type": "nf4",
+            "bnb_4bit_use_double_quant": False,
+            "bnb_4bit_compute_dtype": torch.bfloat16 if BFLOAT16_SUPPORT else "float16",
+        },
+    },
+    "nf4-dq": {
+        "torch_dtype": "bfloat16" if BFLOAT16_SUPPORT else "float16",
+        "quantization_scheme": "bnb",
+        "quantization_config": {
+            "load_in_4bit": True,
+            "bnb_4bit_quant_type": "nf4",
+            "bnb_4bit_use_double_quant": True,
+            "bnb_4bit_compute_dtype": torch.bfloat16 if BFLOAT16_SUPPORT else "float16",
+        },
+    },
+    "int8-decomp": {
+        "torch_dtype": "float16",
+        "quantization_scheme": "bnb",
+        "quantization_config": {
+            "load_in_8bit": True,
+            "llm_int8_threshold": 6.0,
+        },
+    },
+    "int8": {
+        "torch_dtype": "float16",
+        "quantization_scheme": "bnb",
+        "quantization_config": {
+            "load_in_8bit": True,
+            "llm_int8_threshold": 0.0,
+        },
+    },
+}
+
+if __name__ == "__main__":
+    setup_logging(level="INFO")
+
+    parser = argparse.ArgumentParser(description="bitsandbytes inference benchmark tool")
+
+    parser.add_argument("model_id", type=str, help="The model checkpoint to use.")
+
+    parser.add_argument(
+        "--configs",
+        nargs="+",
+        choices=["bf16", "fp16", "nf4", "nf4-dq", "int8", "int8-decomp"],
+        default=["nf4", "int8", "int8-decomp"],
+    )
+    parser.add_argument("--bf16", dest="configs", action="append_const", const="bf16")
+    parser.add_argument("--fp16", dest="configs", action="append_const", const="fp16")
+    parser.add_argument("--nf4", dest="configs", action="append_const", const="nf4")
+    parser.add_argument("--nf4-dq", dest="configs", action="append_const", const="nf4-dq")
+    parser.add_argument("--int8", dest="configs", action="append_const", const="int8")
+    parser.add_argument("--int8-decomp", dest="configs", action="append_const", const="int8-decomp")
+
+    parser.add_argument("--batches", nargs="+", type=int, default=[1, 8, 16, 32])
+    parser.add_argument("--input-length", type=int, default=64)
+
+    parser.add_argument("--out-dir", type=str, default="reports")
+
+    args = parser.parse_args()
+
+    out_dir = Path(args.out_dir)
+    out_dir.mkdir(parents=True, exist_ok=True)
+
+    for batch_size in args.batches:
+        print(f"Benchmarking batch size: {batch_size}")
+        for config in args.configs:
+            launcher_config = ProcessConfig(device_isolation=True, start_method="spawn")
+            scenario_config = InferenceConfig(
+                latency=True,
+                memory=True,
+                input_shapes={"batch_size": batch_size, "sequence_length": args.input_length},
+            )
+            backend_config = PyTorchConfig(
+                device="cuda",
+                device_ids="0",
+                device_map="auto",
+                no_weights=False,
+                model=args.model_id,
+                **WEIGHTS_CONFIGS[config],
+            )
+            benchmark_config = BenchmarkConfig(
+                name=f"benchmark-{config}-bsz{batch_size}",
+                scenario=scenario_config,
+                launcher=launcher_config,
+                backend=backend_config,
+            )
+
+            out_path = out_dir / f"benchmark_{config}_bsz{batch_size}.json"
+
+            benchmark_report = Benchmark.launch(benchmark_config)
+            benchmark_report.log()
+            benchmark_report.save_json(out_path)