# Copyright (c) Microsoft Corporation.  All rights reserved.
# Copyright 2018 The HuggingFace Inc. team.
# Copyright (c) 2018, NVIDIA CORPORATION.  All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
""" Benchmarking the inference of pretrained transformer models.
    PyTorch/TorchScript benchmark is based on https://github.com/huggingface/transformers/blob/master/examples/benchmarks.py.
    One difference is that random input_ids is generated in this benchmark.

    For onnxruntime, this script will convert a pretrained model to ONNX, and optimize it when -o parameter is used.

    Example commands:
        Export all models to ONNX, optimize and validate them:
            python benchmark.py -b 0 -o -v -i 1 2 3
        Run OnnxRuntime on GPU for all models:
            python benchmark.py -g
        Run OnnxRuntime on GPU for all models with fp32 optimization:
            python benchmark.py -g -o
        Run OnnxRuntime on GPU with fp16 optimization:
            python benchmark.py -g -o -p "fp16"
        Run TorchScript on GPU for all models:
            python benchmark.py -e torchscript -g
        Run TorchScript on GPU for all models with fp16:
            python benchmark.py -e torchscript -g -p "fp16"
        Run ONNXRuntime and TorchScript on CPU for all models with quantization:
            python benchmark.py -e torchscript onnxruntime -p "int8" -o
        Run OnnxRuntime with the ROCM provider and graph optimization script:
            python benchmark.py -g -m bert-base-cased --provider rocm --optimizer_info by_script --disable_embed_layer_norm

    It is recommended to use run_benchmark.sh to launch benchmark.
"""

import argparse
import logging
import os
import timeit
from datetime import datetime
from enum import Enum

import numpy
import onnx
import psutil
from benchmark_helper import (
    ConfigModifier,
    OptimizerInfo,
    Precision,
    allocateOutputBuffers,
    create_onnxruntime_session,
    get_latency_result,
    inference_ort,
    inference_ort_with_io_binding,
    output_details,
    output_fusion_statistics,
    output_summary,
    setup_logger,
)
from fusion_options import FusionOptions
from onnx_exporter import (
    create_onnxruntime_input,
    export_onnx_model_from_pt,
    export_onnx_model_from_tf,
    load_pretrained_model,
)
from packaging import version
from quantize_helper import QuantizeHelper

logger = logging.getLogger("")

from huggingface_models import MODEL_CLASSES, MODELS

cpu_count = psutil.cpu_count(logical=False)

# Set OMP environment variable before importing onnxruntime or torch.
if "OMP_NUM_THREADS" not in os.environ:
    os.environ["OMP_NUM_THREADS"] = str(cpu_count)

import torch
from transformers import AutoConfig, AutoModel, AutoTokenizer, GPT2Model, LxmertConfig


def run_onnxruntime(
    use_gpu,
    provider,
    model_names,
    model_class,
    config_modifier,
    precision,
    num_threads,
    batch_sizes,
    sequence_lengths,
    repeat_times,
    input_counts,
    optimizer_info,
    validate_onnx,
    cache_dir,
    onnx_dir,
    verbose,
    overwrite,
    disable_ort_io_binding,
    use_raw_attention_mask,
    model_fusion_statistics,
    model_source,
    args,
):
    import onnxruntime

    results = []
    if (
        use_gpu
        and ("CUDAExecutionProvider" not in onnxruntime.get_available_providers())
        and ("ROCMExecutionProvider" not in onnxruntime.get_available_providers())
        and ("DmlExecutionProvider" not in onnxruntime.get_available_providers())
    ):
        logger.error(
            "Please install onnxruntime-gpu or onnxruntime-directml package instead of onnxruntime, and use a machine with GPU for testing gpu performance."
        )
        return results

    warm_up_repeat = 0
    if provider == "tensorrt":
        optimizer_info = OptimizerInfo.NOOPT
        warm_up_repeat = 5
        if "TensorrtExecutionProvider" not in onnxruntime.get_available_providers():
            logger.error(
                "Please install onnxruntime-gpu-tensorrt package, and use a machine with GPU for testing gpu performance."
            )
            return results

    if optimizer_info == OptimizerInfo.NOOPT:
        logger.warning(
            f"OptimizerInfo is set to {optimizer_info}, graph optimizations specified in FusionOptions are not applied."
        )

    for model_name in model_names:
        all_input_names = MODELS[model_name][0]
        for num_inputs in input_counts:
            if num_inputs > len(all_input_names):
                break

            input_names = all_input_names[:num_inputs]
            args.model_type = MODELS[model_name][3]
            fusion_options = FusionOptions.parse(args)

            if "pt" in model_source:
                with torch.no_grad():
                    (
                        onnx_model_file,
                        is_valid_onnx_model,
                        vocab_size,
                        max_sequence_length,
                    ) = export_onnx_model_from_pt(
                        model_name,
                        MODELS[model_name][1],
                        MODELS[model_name][2],
                        MODELS[model_name][3],
                        model_class,
                        config_modifier,
                        cache_dir,
                        onnx_dir,
                        input_names,
                        use_gpu,
                        precision,
                        optimizer_info,
                        validate_onnx,
                        use_raw_attention_mask,
                        overwrite,
                        model_fusion_statistics,
                        fusion_options,
                    )
            if "tf" in model_source:
                (onnx_model_file, is_valid_onnx_model, vocab_size, max_sequence_length,) = export_onnx_model_from_tf(
                    model_name,
                    MODELS[model_name][1],
                    MODELS[model_name][2],
                    MODELS[model_name][3],
                    model_class,
                    config_modifier,
                    cache_dir,
                    onnx_dir,
                    input_names,
                    use_gpu,
                    precision,
                    optimizer_info,
                    validate_onnx,
                    use_raw_attention_mask,
                    overwrite,
                    model_fusion_statistics,
                    fusion_options,
                )

            if not is_valid_onnx_model:
                continue

            ort_session = create_onnxruntime_session(
                onnx_model_file,
                use_gpu,
                provider,
                enable_all_optimization=True,
                num_threads=num_threads,
                verbose=verbose,
            )
            if ort_session is None:
                continue

            ort_output_names = [node_arg.name for node_arg in ort_session.get_outputs()]
            output_buffers = []
            device = "cuda" if use_gpu else "cpu"
            config = AutoConfig.from_pretrained(model_name, cache_dir=cache_dir)
            max_last_state_size = numpy.prod(
                [
                    max(batch_sizes),
                    max(sequence_lengths),
                    max(vocab_size, config.hidden_size),
                ]
            )
            max_pooler_size = numpy.prod([max(batch_sizes), config.hidden_size])
            for batch_size in batch_sizes:
                if batch_size <= 0:
                    continue
                for sequence_length in sequence_lengths:
                    if max_sequence_length is not None and sequence_length > max_sequence_length:
                        continue

                    input_value_type = numpy.int64 if "pt" in model_source else numpy.int32
                    ort_inputs = create_onnxruntime_input(
                        vocab_size,
                        batch_size,
                        sequence_length,
                        input_names,
                        config,
                        input_value_type,
                    )
                    result_template = {
                        "engine": "onnxruntime",
                        "version": onnxruntime.__version__,
                        "providers": provider,
                        "device": device,
                        "optimizer": optimizer_info,
                        "precision": precision,
                        "io_binding": not disable_ort_io_binding,
                        "model_name": model_name,
                        "inputs": num_inputs,
                        "threads": num_threads,
                        "batch_size": batch_size,
                        "sequence_length": sequence_length,
                        "custom_layer_num": config_modifier.get_layer_num(),
                        "datetime": str(datetime.now()),
                    }

                    logger.info(
                        "Run onnxruntime on {} with input shape {}".format(model_name, [batch_size, sequence_length])
                    )

                    if disable_ort_io_binding:
                        result = inference_ort(
                            ort_session,
                            ort_inputs,
                            result_template,
                            repeat_times,
                            batch_size,
                            warm_up_repeat,
                        )
                    else:
                        # Get output sizes from a dummy ort run
                        ort_outputs = ort_session.run(ort_output_names, ort_inputs)
                        output_buffer_max_sizes = [max_last_state_size]
                        for i in range(len(ort_outputs)):
                            if i == 2 and MODELS[model_name][3] == "gpt":
                                # past state output max size
                                output_buffer_max_sizes.append(max_pooler_size)
                            else:
                                output_buffer_max_sizes.append(max_last_state_size)

                        data_type = numpy.longlong if "pt" in model_source else numpy.intc
                        result = inference_ort_with_io_binding(
                            ort_session,
                            ort_inputs,
                            result_template,
                            repeat_times,
                            ort_output_names,
                            ort_outputs,
                            output_buffers,
                            output_buffer_max_sizes,
                            batch_size,
                            device,
                            data_type,
                            warm_up_repeat,
                        )
                    logger.info(result)
                    results.append(result)

    return results


def run_pytorch(
    use_gpu,
    model_names,
    model_class,
    config_modifier,
    precision,
    num_threads,
    batch_sizes,
    sequence_lengths,
    repeat_times,
    torchscript,
    torch2,
    cache_dir,
    verbose,
):
    results = []
    if use_gpu and not torch.cuda.is_available():
        logger.error("Please install PyTorch with Cuda, and use a machine with GPU for testing gpu performance.")
        return results

    torch.set_grad_enabled(False)

    for model_name in model_names:
        config = AutoConfig.from_pretrained(model_name, torchscript=torchscript, cache_dir=cache_dir)
        config_modifier.modify(config)
        model = load_pretrained_model(
            model_name,
            config=config,
            cache_dir=cache_dir,
            custom_model_class=model_class,
        )
        tokenizer = AutoTokenizer.from_pretrained(model_name, cache_dir=cache_dir)

        max_input_size = (
            tokenizer.max_model_input_sizes[model_name] if model_name in tokenizer.max_model_input_sizes else 1024
        )

        logger.debug(f"Model {model}")
        logger.debug(f"Number of parameters {model.num_parameters()}")

        if precision == Precision.FLOAT16:
            model.half()

        device = torch.device("cuda:0" if use_gpu else "cpu")
        model.to(device)

        if precision == Precision.INT8:
            model = QuantizeHelper.quantize_torch_model(model)

        for batch_size in batch_sizes:
            if batch_size <= 0:
                continue

            for sequence_length in sequence_lengths:
                if max_input_size is not None and sequence_length > max_input_size:
                    continue

                logger.info("Run PyTorch on {} with input shape {}".format(model_name, [batch_size, sequence_length]))
                input_ids = torch.randint(
                    low=0,
                    high=config.vocab_size - 1,
                    size=(batch_size, sequence_length),
                    dtype=torch.long,
                    device=device,
                )
                try:
                    inference = (
                        torch.jit.trace(model, input_ids) if torchscript else torch.compile(model) if torch2 else model
                    )
                    inference(input_ids)

                    runtimes = timeit.repeat(lambda: inference(input_ids), repeat=repeat_times, number=1)

                    result = {
                        "engine": "torchscript" if torchscript else "torch2" if torch2 else "torch",
                        "version": torch.__version__,
                        "providers": "NA",
                        "device": "cuda" if use_gpu else "cpu",
                        "optimizer": "",
                        "precision": precision,
                        "io_binding": "",
                        "model_name": model_name,
                        "inputs": 1,
                        "threads": num_threads,
                        "batch_size": batch_size,
                        "sequence_length": sequence_length,
                        "custom_layer_num": config_modifier.get_layer_num(),
                        "datetime": str(datetime.now()),
                    }
                    result.update(get_latency_result(runtimes, batch_size))
                    logger.info(result)
                    results.append(result)
                except RuntimeError as e:
                    logger.exception(e)
                    torch.cuda.empty_cache()

    return results


def run_with_tf_optimizations(do_eager_mode: bool, use_xla: bool):
    from functools import wraps

    import tensorflow as tf

    def run_func(func):
        @wraps(func)
        def run_in_eager_mode(*args, **kwargs):
            return func(*args, **kwargs)

        @wraps(func)
        @tf.function(experimental_compile=use_xla)
        def run_in_graph_mode(*args, **kwargs):
            return func(*args, **kwargs)

        if do_eager_mode is True:
            assert (
                use_xla is False
            ), "Cannot run model in XLA, if `args.eager_mode` is set to `True`. Please set `args.eager_mode=False`."
            return run_in_eager_mode
        else:
            return run_in_graph_mode

    return run_func


def run_tensorflow(
    use_gpu,
    model_names,
    model_class,
    config_modifier,
    precision,
    num_threads,
    batch_sizes,
    sequence_lengths,
    repeat_times,
    cache_dir,
    verbose,
):
    results = []

    import tensorflow as tf

    tf.config.threading.set_intra_op_parallelism_threads(num_threads)

    if not use_gpu:
        tf.config.set_visible_devices([], "GPU")

    if use_gpu and not tf.test.is_built_with_cuda():
        logger.error("Please install Tensorflow-gpu, and use a machine with GPU for testing gpu performance.")
        return results

    if use_gpu:  # Restrict TensorFlow to only use the first GPU
        physical_devices = tf.config.list_physical_devices("GPU")
        try:
            tf.config.set_visible_devices(physical_devices[0], "GPU")
            tf.config.experimental.set_memory_growth(physical_devices[0], True)
            tf.distribute.OneDeviceStrategy(device="/gpu:0")
        except RuntimeError as e:
            logger.exception(e)

    if precision == Precision.FLOAT16 or precision == Precision.INT8:
        raise NotImplementedError("Mixed precision is currently not supported.")

    for model_name in model_names:
        config = AutoConfig.from_pretrained(model_name, cache_dir=cache_dir)
        config_modifier.modify(config)

        model = load_pretrained_model(
            model_name,
            config=config,
            cache_dir=cache_dir,
            custom_model_class=model_class,
            is_tf_model=True,
        )

        tokenizer = AutoTokenizer.from_pretrained(model_name, cache_dir=cache_dir)

        max_input_size = (
            tokenizer.max_model_input_sizes[model_name] if model_name in tokenizer.max_model_input_sizes else 1024
        )

        for batch_size in batch_sizes:
            if batch_size <= 0:
                continue

            for sequence_length in sequence_lengths:
                if max_input_size is not None and sequence_length > max_input_size:
                    continue

                logger.info(
                    "Run Tensorflow on {} with input shape {}".format(model_name, [batch_size, sequence_length])
                )

                import random

                rng = random.Random()
                values = [rng.randint(0, config.vocab_size - 1) for i in range(batch_size * sequence_length)]
                input_ids = tf.constant(values, shape=(batch_size, sequence_length), dtype=tf.int32)

                try:
                    # Disable both for better inference perf
                    @run_with_tf_optimizations(do_eager_mode=False, use_xla=False)
                    def encoder_forward():
                        return model(input_ids, training=False)

                    @run_with_tf_optimizations(do_eager_mode=False, use_xla=False)
                    def encoder_decoder_forward():
                        return model(input_ids, decoder_input_ids=input_ids, training=False)

                    @run_with_tf_optimizations(do_eager_mode=False, use_xla=False)
                    def lxmert_forward():
                        feats = tf.random.normal([1, 1, config.visual_feat_dim])
                        pos = tf.random.normal([1, 1, config.visual_pos_dim])
                        return model(
                            input_ids,
                            visual_feats=feats,
                            visual_pos=pos,
                            training=False,
                        )

                    inference = encoder_forward
                    if config.is_encoder_decoder:
                        inference = encoder_decoder_forward
                    elif isinstance(config, LxmertConfig):
                        inference = lxmert_forward

                    inference()

                    runtimes = timeit.repeat(lambda: inference(), repeat=repeat_times, number=1)

                    result = {
                        "engine": "tensorflow",
                        "version": tf.__version__,
                        "providers": "NA",
                        "device": "cuda" if use_gpu else "cpu",
                        "optimizer": "",
                        "precision": precision,
                        "io_binding": "",
                        "model_name": model_name,
                        "inputs": 1,
                        "threads": num_threads,
                        "batch_size": batch_size,
                        "sequence_length": sequence_length,
                        "custom_layer_num": config_modifier.get_layer_num(),
                        "datetime": str(datetime.now()),
                    }
                    result.update(get_latency_result(runtimes, batch_size))
                    logger.info(result)
                    results.append(result)
                except RuntimeError as e:
                    logger.exception(e)
                    from numba import cuda

                    device = cuda.get_current_device()
                    device.reset()

    return results


def parse_arguments():
    parser = argparse.ArgumentParser()

    parser.add_argument(
        "-m",
        "--models",
        required=False,
        nargs="+",
        type=str,
        default=["bert-base-cased", "roberta-base", "gpt2"],
        choices=list(MODELS.keys()),
        help="Pre-trained models in the list: " + ", ".join(MODELS.keys()),
    )

    parser.add_argument(
        "--model_source",
        required=False,
        nargs=1,
        type=str,
        default="pt",
        choices=["pt", "tf"],
        help="Export onnx from pt or tf",
    )

    parser.add_argument(
        "--model_class",
        required=False,
        type=str,
        default=None,
        choices=list(MODEL_CLASSES),
        help="Model type selected in the list: " + ", ".join(MODEL_CLASSES),
    )

    parser.add_argument(
        "-e",
        "--engines",
        required=False,
        nargs="+",
        type=str,
        default=["onnxruntime"],
        choices=["onnxruntime", "torch", "torch2", "torchscript", "tensorflow"],
        help="Engines to benchmark",
    )

    parser.add_argument(
        "-c",
        "--cache_dir",
        required=False,
        type=str,
        default=os.path.join(".", "cache_models"),
        help="Directory to cache pre-trained models",
    )

    parser.add_argument(
        "--onnx_dir",
        required=False,
        type=str,
        default=os.path.join(".", "onnx_models"),
        help="Directory to store onnx models",
    )

    parser.add_argument("-g", "--use_gpu", required=False, action="store_true", help="Run on gpu device")

    parser.add_argument(
        "--provider",
        required=False,
        type=str,
        default=None,
        help="Execution provider to use",
    )

    parser.add_argument(
        "-p",
        "--precision",
        type=Precision,
        default=Precision.FLOAT32,
        choices=list(Precision),
        help="Precision of model to run. fp32 for full precision, fp16 for half precision, and int8 for quantization",
    )

    parser.add_argument("--verbose", required=False, action="store_true", help="Print more information")

    parser.add_argument(
        "--overwrite",
        required=False,
        action="store_true",
        help="Overwrite existing models",
    )

    parser.add_argument(
        "-o",
        "--optimizer_info",
        type=OptimizerInfo,
        default=OptimizerInfo.BYSCRIPT,
        choices=list(OptimizerInfo),
        help="Optimizer info: Use optimizer.py to optimize onnx model as default. Can also choose from by_ort and no_opt",
    )

    parser.add_argument(
        "-v",
        "--validate_onnx",
        required=False,
        action="store_true",
        help="Validate ONNX model",
    )

    parser.add_argument(
        "-f",
        "--fusion_csv",
        required=False,
        default=None,
        help="CSV file for saving summary results of graph optimization.",
    )

    parser.add_argument(
        "-d",
        "--detail_csv",
        required=False,
        default=None,
        help="CSV file for saving detail results.",
    )

    parser.add_argument(
        "-r",
        "--result_csv",
        required=False,
        default=None,
        help="CSV file for saving summary results.",
    )

    parser.add_argument(
        "-i",
        "--input_counts",
        required=False,
        nargs="+",
        default=[1],
        type=int,
        choices=[1, 2, 3],
        help="Number of ONNX model inputs. Please use 1 for fair comparison with Torch or TorchScript.",
    )

    parser.add_argument(
        "-t",
        "--test_times",
        required=False,
        default=100,
        type=int,
        help="Number of repeat times to get average inference latency.",
    )

    parser.add_argument("-b", "--batch_sizes", nargs="+", type=int, default=[1])

    parser.add_argument(
        "-s",
        "--sequence_lengths",
        nargs="+",
        type=int,
        default=[4, 8, 16, 32, 64, 128, 256],
    )

    parser.add_argument(
        "--disable_ort_io_binding",
        required=False,
        action="store_true",
        help="Disable running ONNX Runtime with binded inputs and outputs. ",
    )
    parser.set_defaults(disable_ort_io_binding=False)

    parser.add_argument(
        "-n",
        "--num_threads",
        required=False,
        nargs="+",
        type=int,
        default=[0],
        help="Threads to use",
    )

    parser.add_argument(
        "--force_num_layers",
        required=False,
        type=int,
        default=None,
        help="Manually set the model's layer number",
    )

    FusionOptions.add_arguments(parser)

    args = parser.parse_args()
    return args


def main():
    args = parse_arguments()

    setup_logger(args.verbose)

    if args.precision == Precision.FLOAT16 and not args.use_gpu:
        logger.error("fp16 is for GPU only")
        return

    if args.precision == Precision.INT8 and args.use_gpu:
        logger.error("int8 is for CPU only")
        return

    args.num_threads = sorted(set(cpu_count if x <= 0 else x for x in args.num_threads))

    logger.info(f"Arguments: {args}")

    if not os.path.exists(args.cache_dir):
        try:
            os.mkdir(args.cache_dir)
        except OSError:
            logger.error("Creation of the directory %s failed" % args.cache_dir)

    enable_torch = "torch" in args.engines
    enable_torch2 = "torch2" in args.engines
    enable_torchscript = "torchscript" in args.engines
    enable_onnxruntime = "onnxruntime" in args.engines
    enable_tensorflow = "tensorflow" in args.engines

    if enable_torch2 and version.parse(torch.__version__) < version.parse("2.0.0"):
        logger.error(f"PyTorch version must be >=2.0.0 and you are using {torch.__version__}")
        return

    config_modifier = ConfigModifier(args.force_num_layers)

    results = []

    for num_threads in args.num_threads:
        torch.set_num_threads(num_threads)
        logger.debug(torch.__config__.parallel_info())
        if enable_torch or enable_torch2 or enable_torchscript:
            if args.input_counts != [1]:
                logger.warning("--input_counts is not implemented for torch or torchscript engine.")

            if enable_torchscript:
                results += run_pytorch(
                    args.use_gpu,
                    args.models,
                    args.model_class,
                    config_modifier,
                    args.precision,
                    num_threads,
                    args.batch_sizes,
                    args.sequence_lengths,
                    args.test_times,
                    True,
                    False,
                    args.cache_dir,
                    args.verbose,
                )

            if enable_torch:
                results += run_pytorch(
                    args.use_gpu,
                    args.models,
                    args.model_class,
                    config_modifier,
                    args.precision,
                    num_threads,
                    args.batch_sizes,
                    args.sequence_lengths,
                    args.test_times,
                    False,
                    False,
                    args.cache_dir,
                    args.verbose,
                )

            if enable_torch2:
                results += run_pytorch(
                    args.use_gpu,
                    args.models,
                    args.model_class,
                    config_modifier,
                    args.precision,
                    num_threads,
                    args.batch_sizes,
                    args.sequence_lengths,
                    args.test_times,
                    False,
                    True,
                    args.cache_dir,
                    args.verbose,
                )

        if enable_tensorflow:
            results += run_tensorflow(
                args.use_gpu,
                args.models,
                args.model_class,
                config_modifier,
                args.precision,
                num_threads,
                args.batch_sizes,
                args.sequence_lengths,
                args.test_times,
                args.cache_dir,
                args.verbose,
            )

        model_fusion_statistics = {}
        if enable_onnxruntime:
            try:
                use_raw_attention_mask = not args.use_mask_index
                results += run_onnxruntime(
                    args.use_gpu,
                    args.provider,
                    args.models,
                    args.model_class,
                    config_modifier,
                    args.precision,
                    num_threads,
                    args.batch_sizes,
                    args.sequence_lengths,
                    args.test_times,
                    args.input_counts,
                    args.optimizer_info,
                    args.validate_onnx,
                    args.cache_dir,
                    args.onnx_dir,
                    args.verbose,
                    args.overwrite,
                    args.disable_ort_io_binding,
                    use_raw_attention_mask,
                    model_fusion_statistics,
                    args.model_source,
                    args,
                )
            except:
                logger.error(f"Exception", exc_info=True)

    time_stamp = datetime.now().strftime("%Y%m%d-%H%M%S")
    if model_fusion_statistics:
        csv_filename = args.fusion_csv or f"benchmark_fusion_{time_stamp}.csv"
        output_fusion_statistics(model_fusion_statistics, csv_filename)

    if len(results) == 0:
        if args.batch_sizes != [0]:
            logger.warning("No any result avaiable.")
        return

    csv_filename = args.detail_csv or f"benchmark_detail_{time_stamp}.csv"
    output_details(results, csv_filename)

    csv_filename = args.result_csv or f"benchmark_summary_{time_stamp}.csv"
    output_summary(results, csv_filename, args)


if __name__ == "__main__":
    main()