Add --fuser arg to train/validate/benchmark scripts to select jit fuser type

benchmark.py

@@ -21,7 +21,7 @@ from functools import partial
 from timm.models import create_model, is_model, list_models
 from timm.optim import create_optimizer_v2
 from timm.data import resolve_data_config
-from timm.utils import AverageMeter, setup_default_logging
+from timm.utils import setup_default_logging, set_jit_fuser
 
 
 has_apex = False
@@ -95,7 +95,8 @@ parser.add_argument('--precision', default='float32', type=str,
                     help='Numeric precision. One of (amp, float32, float16, bfloat16, tf32)')
 parser.add_argument('--torchscript', dest='torchscript', action='store_true',
                     help='convert model torchscript for inference')
-
+parser.add_argument('--fuser', default='', type=str,
+                    help="Select jit fuser. One of ('', 'te', 'old', 'nvfuser')")
 
 
 # train optimizer parameters
@@ -186,7 +187,7 @@ def profile_fvcore(model, input_size=(3, 224, 224), batch_size=1, detailed=False
 class BenchmarkRunner:
     def __init__(
             self, model_name, detail=False, device='cuda', torchscript=False, precision='float32',
-            num_warm_iter=10, num_bench_iter=50, use_train_size=False, **kwargs):
+            fuser='', num_warm_iter=10, num_bench_iter=50, use_train_size=False, **kwargs):
         self.model_name = model_name
         self.detail = detail
         self.device = device
@@ -194,6 +195,8 @@ class BenchmarkRunner:
         self.channels_last = kwargs.pop('channels_last', False)
         self.amp_autocast = torch.cuda.amp.autocast if self.use_amp else suppress
 
+        if fuser:
+            set_jit_fuser(fuser)
         self.model = create_model(
             model_name,
             num_classes=kwargs.pop('num_classes', None),

timm/utils/__init__.py

@@ -3,7 +3,7 @@ from .checkpoint_saver import CheckpointSaver
 from .clip_grad import dispatch_clip_grad
 from .cuda import ApexScaler, NativeScaler
 from .distributed import distribute_bn, reduce_tensor
-from .jit import set_jit_legacy
+from .jit import set_jit_legacy, set_jit_fuser
 from .log import setup_default_logging, FormatterNoInfo
 from .metrics import AverageMeter, accuracy
 from .misc import natural_key, add_bool_arg

timm/utils/jit.py

@@ -2,6 +2,8 @@
 
 Hacked together by / Copyright 2020 Ross Wightman
 """
+import os
+
 import torch
 
 
@@ -16,3 +18,33 @@ def set_jit_legacy():
     torch._C._jit_set_profiling_mode(False)
     torch._C._jit_override_can_fuse_on_gpu(True)
     #torch._C._jit_set_texpr_fuser_enabled(True)
+
+
+def set_jit_fuser(fuser):
+    if fuser == "te":
+        # default fuser should be == 'te'
+        torch._C._jit_set_profiling_executor(True)
+        torch._C._jit_set_profiling_mode(True)
+        torch._C._jit_override_can_fuse_on_cpu(False)
+        torch._C._jit_override_can_fuse_on_gpu(True)
+        torch._C._jit_set_texpr_fuser_enabled(True)
+    elif fuser == "old" or fuser == "legacy":
+        torch._C._jit_set_profiling_executor(False)
+        torch._C._jit_set_profiling_mode(False)
+        torch._C._jit_override_can_fuse_on_gpu(True)
+        torch._C._jit_set_texpr_fuser_enabled(False)
+    elif fuser == "nvfuser" or fuser == "nvf":
+        os.environ['PYTORCH_CUDA_FUSER_DISABLE_FALLBACK'] = '1'
+        os.environ['PYTORCH_CUDA_FUSER_DISABLE_FMA'] = '1'
+        os.environ['PYTORCH_CUDA_FUSER_JIT_OPT_LEVEL'] = '0'
+        torch._C._jit_set_texpr_fuser_enabled(False)
+        torch._C._jit_set_profiling_executor(True)
+        torch._C._jit_set_profiling_mode(True)
+        torch._C._jit_can_fuse_on_cpu()
+        torch._C._jit_can_fuse_on_gpu()
+        torch._C._jit_override_can_fuse_on_cpu(False)
+        torch._C._jit_override_can_fuse_on_gpu(False)
+        torch._C._jit_set_nvfuser_guard_mode(True)
+        torch._C._jit_set_nvfuser_enabled(True)
+    else:
+        assert False, f"Invalid jit fuser ({fuser})"

train.py

@@ -295,6 +295,8 @@ parser.add_argument('--use-multi-epochs-loader', action='store_true', default=Fa
                     help='use the multi-epochs-loader to save time at the beginning of every epoch')
 parser.add_argument('--torchscript', dest='torchscript', action='store_true',
                     help='convert model torchscript for inference')
+parser.add_argument('--fuser', default='', type=str,
+                    help="Select jit fuser. One of ('', 'te', 'old', 'nvfuser')")
 parser.add_argument('--log-wandb', action='store_true', default=False,
                     help='log training and validation metrics to wandb')
 
@@ -364,6 +366,9 @@ def main():
 
     random_seed(args.seed, args.rank)
 
+    if args.fuser:
+        set_jit_fuser(args.fuser)
+
     model = create_model(
         args.model,
         pretrained=args.pretrained,

validate.py

@@ -21,7 +21,7 @@ from contextlib import suppress
 
 from timm.models import create_model, apply_test_time_pool, load_checkpoint, is_model, list_models
 from timm.data import create_dataset, create_loader, resolve_data_config, RealLabelsImagenet
-from timm.utils import accuracy, AverageMeter, natural_key, setup_default_logging, set_jit_legacy
+from timm.utils import accuracy, AverageMeter, natural_key, setup_default_logging, set_jit_fuser
 
 has_apex = False
 try:
@@ -102,8 +102,8 @@ parser.add_argument('--use-ema', dest='use_ema', action='store_true',
                     help='use ema version of weights if present')
 parser.add_argument('--torchscript', dest='torchscript', action='store_true',
                     help='convert model torchscript for inference')
-parser.add_argument('--legacy-jit', dest='legacy_jit', action='store_true',
-                    help='use legacy jit mode for pytorch 1.5/1.5.1/1.6 to get back fusion performance')
+parser.add_argument('--fuser', default='', type=str,
+                    help="Select jit fuser. One of ('', 'te', 'old', 'nvfuser')")
 parser.add_argument('--results-file', default='', type=str, metavar='FILENAME',
                     help='Output csv file for validation results (summary)')
 parser.add_argument('--real-labels', default='', type=str, metavar='FILENAME',
@@ -133,8 +133,8 @@ def validate(args):
     else:
         _logger.info('Validating in float32. AMP not enabled.')
 
-    if args.legacy_jit:
-        set_jit_legacy()
+    if args.fuser:
+        set_jit_fuser(args.fuser)
 
     # create model
     model = create_model(