[FX] move example folder (#1149)

* move example folder

* change folder name to fx

* add hf example

Author: Wei

py/torch_tensorrt/fx/example/fx2trt_example.py renamed to examples/fx/fx2trt_example.py

@@ -0,0 +1,341 @@
+import argparse
+import copy
+import gc
+import time
+from functools import partial
+
+import numpy as np
+import pandas as pd
+import torch
+from transformers import AutoConfig
+from transformers import AutoModelForCausalLM, AutoModelForMaskedLM, AutoModelForSeq2SeqLM
+from transformers import BertConfig, ReformerConfig, XLNetModel, XLNetConfig
+
+import torchdynamo
+from torchdynamo.optimizations import backends
+from torchdynamo.optimizations.training import aot_autograd_debug_strategy1
+from torchdynamo.optimizations.training import aot_autograd_speedup_strategy
+from torchdynamo.testing import collect_results
+from torchdynamo.testing import same
+
+torch.backends.cuda.matmul.allow_tf32 = True
+
+
+# This example is for testing the hugging face models. Since the model can not be directly traced by acc tracer(based on torch.fx)
+# We combined our efforts together with TorchDynamo. To illustrate the performance, we tested the performance with different batch size.
+
+benchmarks = [
+    # Longformer is not suitable for torch_tensorrt-fx
+    # (
+    #     AutoConfig.from_pretrained("allenai/longformer-base-4096"),
+    #     AutoModelForMaskedLM,
+    #     (2, 1024),
+    #     [torch.bfloat16], # trilu not implemented for bfloat16
+    # ),
+    #(ReformerConfig(), AutoModelForMaskedLM, (8, 4096), []), # Reformer is not suitable for torch_tensorrt-fx
+    #(BigBirdConfig(attention_type="block_sparse"), AutoModelForMaskedLM, (2, 1024), []), # Birdbird is not suitable for torch_tensorrt-fx
+    #(AutoConfig.from_pretrained("google/fnet-base"), AutoModelForMaskedLM, (4, 512), []), #  not supported by torch_tensorrt-fx
+
+    # batch size = 1
+    (BertConfig(), AutoModelForMaskedLM, (1, 512), []),
+    (AutoConfig.from_pretrained("albert-base-v2"), AutoModelForMaskedLM, (1, 512), []),
+    (AutoConfig.from_pretrained("gpt2"), AutoModelForCausalLM, (1, 512), []),
+    (AutoConfig.from_pretrained("t5-small"), AutoModelForSeq2SeqLM, (1, 512), []),
+    (AutoConfig.from_pretrained("distilbert-base-uncased"),  AutoModelForMaskedLM, (1, 512), []),
+    (AutoConfig.from_pretrained("roberta-base"),  AutoModelForMaskedLM, (1, 512), []),
+    (AutoConfig.from_pretrained("distilgpt2"), AutoModelForCausalLM, (1, 512), []),
+    (AutoConfig.from_pretrained("google/electra-base-discriminator"), AutoModelForMaskedLM, (1, 512), []),
+    (AutoConfig.from_pretrained("YituTech/conv-bert-base"), AutoModelForMaskedLM, (1, 512), []),
+    (AutoConfig.from_pretrained("google/mobilebert-uncased"), AutoModelForMaskedLM, (1, 512), []),
+    (AutoConfig.from_pretrained("camembert-base"), AutoModelForMaskedLM, (1, 512), []),
+    (AutoConfig.from_pretrained("microsoft/layoutlm-base-uncased"), AutoModelForMaskedLM, (1, 512), []),
+    # batch size = 4
+    (BertConfig(), AutoModelForMaskedLM, (4, 512), []),
+    (AutoConfig.from_pretrained("albert-base-v2"), AutoModelForMaskedLM, (4, 512), []),
+    (AutoConfig.from_pretrained("gpt2"), AutoModelForCausalLM, (4, 512), []),
+    (AutoConfig.from_pretrained("t5-small"), AutoModelForSeq2SeqLM, (4, 512), []),
+    (AutoConfig.from_pretrained("distilbert-base-uncased"),  AutoModelForMaskedLM, (4, 512), []),
+    (AutoConfig.from_pretrained("roberta-base"),  AutoModelForMaskedLM, (4, 512), []),
+    (AutoConfig.from_pretrained("distilgpt2"), AutoModelForCausalLM, (4, 512), []),
+    (AutoConfig.from_pretrained("google/electra-base-discriminator"), AutoModelForMaskedLM, (4, 512), []),
+    (AutoConfig.from_pretrained("YituTech/conv-bert-base"), AutoModelForMaskedLM, (4, 512), []),
+    (AutoConfig.from_pretrained("google/mobilebert-uncased"), AutoModelForMaskedLM, (4, 512), []),
+    (AutoConfig.from_pretrained("camembert-base"), AutoModelForMaskedLM, (4, 512), []),
+    (AutoConfig.from_pretrained("microsoft/layoutlm-base-uncased"), AutoModelForMaskedLM, (4, 512), []),
+    # batch size = 8
+    (BertConfig(), AutoModelForMaskedLM, (8, 512), []),
+    (AutoConfig.from_pretrained("albert-base-v2"), AutoModelForMaskedLM, (8, 512), []),
+    (AutoConfig.from_pretrained("gpt2"), AutoModelForCausalLM, (8, 512), []),
+    (AutoConfig.from_pretrained("t5-small"), AutoModelForSeq2SeqLM, (8, 512), []),
+    (AutoConfig.from_pretrained("distilbert-base-uncased"),  AutoModelForMaskedLM, (8, 512), []),
+    (AutoConfig.from_pretrained("roberta-base"),  AutoModelForMaskedLM, (8, 512), []),
+    (AutoConfig.from_pretrained("distilgpt2"), AutoModelForCausalLM, (8, 512), []),
+    (AutoConfig.from_pretrained("google/electra-base-discriminator"), AutoModelForMaskedLM, (8, 512), []),
+    (AutoConfig.from_pretrained("YituTech/conv-bert-base"), AutoModelForMaskedLM, (8, 512), []),
+    (AutoConfig.from_pretrained("google/mobilebert-uncased"), AutoModelForMaskedLM, (8, 512), []),
+    (AutoConfig.from_pretrained("camembert-base"), AutoModelForMaskedLM, (8, 512), []),
+    (AutoConfig.from_pretrained("microsoft/layoutlm-base-uncased"), AutoModelForMaskedLM, (8, 512), []),
+]
+
+device = "cuda"
+
+
+class NullContext:
+    def __enter__(self):
+        pass
+
+    def __exit__(self, exc_type, exc_val, exc_tb):
+        pass
+
+
+@torchdynamo.skip
+def get_cur_memory():
+    torch.cuda.synchronize()
+
+    gc.collect()
+    torch.cuda.empty_cache()
+    stats = torch.cuda.memory_stats()
+    peak_bytes_requirement = stats["allocated_bytes.all.current"]
+    # print(f"Current memory requirement: {peak_bytes_requirement / 1024 ** 3:.2f} GB")
+    return peak_bytes_requirement
+
+
+@torchdynamo.skip
+def forward_pass(mod, inputs, collect_outputs=True):
+    return mod(*inputs)
+
+# correctness function to compare with eager mode
+@torchdynamo.skip
+def check_correctness(args, mod, inputs, optimize_ctx, optimize_name):
+    torch.manual_seed(1337)
+    correct_result = forward_pass(copy.deepcopy(mod), inputs)
+
+    torch.manual_seed(1337)
+    correct_rerun_result = forward_pass(copy.deepcopy(mod), inputs)
+
+    if not same(correct_result, correct_rerun_result):
+        print("INCORRECT - Variation in Eager runs itself")
+        return False
+
+    torch.manual_seed(1337)
+    torchdynamo.reset()
+    try:
+        with optimize_ctx:
+            new_result = forward_pass(mod, inputs)
+    except Exception:
+        print("ERROR")
+        return False
+
+    if optimize_name == "dynamo_fx2trt_fp16":
+        cos_similarity = True
+    else:
+        cos_similarity = False
+
+    if not same(correct_result, new_result, cos_similarity=cos_similarity, tol=1e-2):
+        print("INCORRECT")
+        return False
+    return True
+
+
+synchronize = torch.cuda.synchronize
+
+# timing function to record the repeated run time
+def timed(model, model_iter_fn, train_inputs, timings=1, return_result=False):
+    synchronize()
+    torch.manual_seed(1337)
+    t0 = time.perf_counter()
+    # Dont collect outputs to correctly measure timing
+    for _ in range(timings):
+        result = model_iter_fn(model, train_inputs, collect_outputs=False)
+        synchronize()
+    t1 = time.perf_counter()
+    # print("===timed=", t1-t0)
+    return (t1 - t0, result) if return_result else t1 - t0
+
+# benchmark functions for repeated run of hugging face models after tracing by torchdynamo and lowered through torch_tensorrt-fx
+@torchdynamo.skip
+def bench_model_eval(args, name, mod, eval_inputs, optimize_ctx):
+    if type(optimize_ctx) == NullContext:
+        # Profile memory
+        m = None
+        for i in range(5):
+            out = mod(*eval_inputs)
+            if i == 4:
+                m = get_cur_memory()
+
+        # Warmup
+        iters = 5
+        for _ in range(iters):
+            timed(mod, forward_pass, eval_inputs)
+        synchronize()
+
+        # Profile time
+        iters = 50
+        synchronize()
+        timings = []
+        for _ in range(iters):
+            timings.append(timed(mod, forward_pass, eval_inputs))
+        t = np.median(timings, axis=0)
+    else:
+        # does not need recompile for torchdynamo, demo for fx2trt only
+        with torchdynamo.run():
+            # Profile memory
+            m = None
+            for i in range(5):
+                out = mod(*eval_inputs)
+                if i == 4:
+                    m = get_cur_memory()
+
+            # Warmup
+            iters = 5
+            for _ in range(iters):
+                timed(mod, forward_pass, eval_inputs)
+            synchronize()
+
+            # Profile time
+            iters = 50
+            synchronize()
+            timings = []
+            for _ in range(iters):
+                timings.append(timed(mod, forward_pass, eval_inputs))
+            t = np.median(timings, axis=0)
+
+    print(name, t, m)
+    return t, m
+
+
+model_header, dtype_header, nh, th, mh, sp, mp, acc = (
+    "model",
+    "dtype",
+    "name",
+    "time (s)",
+    "mem (GB)",
+    "speedup",
+    "mem_compression",
+    "is_accurate",
+)
+
+
+def create_record(model_name, dtype, is_accurate, name, t, m):
+    return {
+        model_header: model_name,
+        dtype_header: str(dtype),
+        acc: is_accurate,
+        nh: name,
+        th: t,
+        mh: m / 2 ** 30,
+    }
+
+
+numerical_diffs = []
+results = []
+
+
+def load_model(config, model_type, dtype, args):
+    for attr in dir(config):
+        if "drop" in attr and isinstance(getattr(config, attr), float):
+            setattr(
+                config, attr, 1e-30
+            )  # So we can check for correct gradients without eliminating the dropout computation
+    model = model_type.from_config(config).to(device, dtype=dtype)
+    model.eval()
+    return model
+
+
+class ArgsToKwargsWrapper(torch.nn.Module):
+    def __init__(self, model):
+        super(ArgsToKwargsWrapper, self).__init__()
+        self.model = model
+
+    def forward(self, input_ids, decoder_input_ids):
+        return self.model(input_ids=input_ids, decoder_input_ids=decoder_input_ids)
+
+
+def run_all_eval(args, optimize_ctx, optimize_name, dtype):
+    for config, model_type, input_size, not_supported_dtypes in benchmarks:
+        if dtype in not_supported_dtypes:
+            continue
+
+        model = load_model(config, model_type, dtype, args)
+
+        model_name = type(model).__name__
+
+        # Prepare inputs
+        input_ids = torch.randint(0, config.vocab_size, input_size).to(device)
+
+        if model_type.__name__ == "AutoModelForSeq2SeqLM":
+            model = ArgsToKwargsWrapper(model)
+            eval_inputs = (input_ids, input_ids, )
+        else:
+            eval_inputs = (input_ids,)
+
+        # Correctness check
+        is_accurate = check_correctness(args, model, eval_inputs, optimize_ctx, optimize_name)
+        # Profile eager
+        t, m = bench_model_eval(args, "eager", model, eval_inputs, NullContext())
+        results.append(create_record(model_name, dtype, is_accurate, "eager", t, m))
+
+        # Profile Dynamo nvfuser
+        t, m = bench_model_eval(args, optimize_name, model, eval_inputs, optimize_ctx)
+        results.append(create_record(model_name, dtype, is_accurate, optimize_name, t, m))
+
+        # calculate relative improvements
+        base_r = results[-2]
+        for r in results[-2:]:
+            r[sp] = round(base_r[th] / r[th], 3)
+            r[mp] = round(base_r[mh] / r[mh], 3)
+        print(pd.DataFrame(results[-2:]).to_markdown(index=False, floatfmt=".3f"))
+
+    print("=== Final results ===")
+    print(pd.DataFrame(results).to_markdown(index=False, floatfmt=".3f"))
+
+
+def main():
+    parser = argparse.ArgumentParser()
+    group = parser.add_mutually_exclusive_group()
+    group.add_argument(
+        "--run-dynamo-eager",
+        action="store_true",
+        help="Use Dynamo eager",
+    )
+    group.add_argument(
+        "--run-dynamo-fx2trt-fp16",
+        action="store_true",
+        help="Use Dynamo with fx2trt fp16",
+    )
+    group.add_argument(
+        "--run-dynamo-fx2trt-fp32",
+        action="store_true",
+        help="Use Dynamo with fx2trt fp32",
+    )
+    args = parser.parse_args()
+    optimize_ctx = NullContext()
+    optimize_name = "eager"
+
+    if args.run_dynamo_eager:
+        optimize_ctx = torchdynamo.optimize("eager")
+        optimize_name = "dynamo_eager"
+    elif args.run_dynamo_fx2trt_fp16:
+        optimize_ctx = torchdynamo.optimize(
+            backends.fx2trt_compiler_fp16
+        )
+        optimize_name = "dynamo_fx2trt_fp16"
+    elif args.run_dynamo_fx2trt_fp32:
+        optimize_ctx = torchdynamo.optimize(
+            backends.fx2trt_compiler
+        )
+        optimize_name = "dynamo_fx2trt_fp32"
+
+    experiment = run_all_eval
+    # fp16
+    if optimize_name == "dynamo_fx2trt_fp16":
+        experiment = partial(experiment, dtype=torch.float16)
+    if optimize_name == "dynamo_fx2trt_fp32":
+        experiment = partial(experiment, dtype=torch.float32)
+
+    experiment = partial(experiment, optimize_ctx=optimize_ctx, optimize_name=optimize_name)
+    experiment(args)
+
+
+if __name__ == "__main__":
+    main()

examples/fx/hugging_face_torchdynamo_example.py

@@ -0,0 +1,4 @@
+FX2TRT is merged as FX module in Torch-TensorRT
+  
+- The user guide is in [link](https://github.com/pytorch/TensorRT/blob/master/docsrc/tutorials/getting_started_with_fx_path.rst#installation)
+- The examples are moved to [link](https://github.com/pytorch/TensorRT/tree/master/examples/fx_example)