UGATIT version 0.1

configs/synthesizers/UGATIT.yml

@@ -1,4 +1,4 @@
-name: selfie2anime-origin
+name: selfie2anime
 engine: UGATIT
 result_dir: ./result
 max_pairs: 1000000

engine/UGATIT.py

@@ -4,7 +4,6 @@ from math import ceil
 import torch
 import torch.nn as nn
 import torch.nn.functional as F
-from torch.utils.data import DataLoader
 
 import ignite.distributed as idist
 from ignite.engine import Events, Engine
@@ -20,11 +19,28 @@ from loss.gan import GANLoss
 from model.weight_init import generation_init_weights
 from model.GAN.residual_generator import GANImageBuffer
 from model.GAN.UGATIT import RhoClipper
-from util.image import make_2d_grid, fuse_attention_map
+from util.image import make_2d_grid, fuse_attention_map, attention_colored_map
 from util.handler import setup_common_handlers, setup_tensorboard_handler
 from util.build import build_model, build_optimizer
 
 
+def build_lr_schedulers(optimizers, config):
+    g_milestones_values = [
+        (0, config.optimizers.generator.lr),
+        (int(config.data.train.scheduler.start_proportion * config.max_iteration), config.optimizers.generator.lr),
+        (config.max_iteration, config.data.train.scheduler.target_lr)
+    ]
+    d_milestones_values = [
+        (0, config.optimizers.discriminator.lr),
+        (int(config.data.train.scheduler.start_proportion * config.max_iteration), config.optimizers.discriminator.lr),
+        (config.max_iteration, config.data.train.scheduler.target_lr)
+    ]
+    return dict(
+        g=PiecewiseLinear(optimizers["g"], param_name="lr", milestones_values=g_milestones_values),
+        d=PiecewiseLinear(optimizers["d"], param_name="lr", milestones_values=d_milestones_values)
+    )
+
+
 def get_trainer(config, logger):
     generators = dict(
         a2b=build_model(config.model.generator, config.distributed.model),
@@ -42,23 +58,14 @@ def get_trainer(config, logger):
     logger.debug(discriminators["ga"])
     logger.debug(generators["a2b"])
 
-    optimizer_g = build_optimizer(chain(*[m.parameters() for m in generators.values()]), config.optimizers.generator)
+    optimizers = dict(
-    optimizer_d = build_optimizer(chain(*[m.parameters() for m in discriminators.values()]),
+        g=build_optimizer(chain(*[m.parameters() for m in generators.values()]), config.optimizers.generator),
-                                  config.optimizers.discriminator)
+        d=build_optimizer(chain(*[m.parameters() for m in discriminators.values()]), config.optimizers.discriminator),
+    )
+    logger.info(f"build optimizers:\n{optimizers}")
 
-    milestones_values = [
+    lr_schedulers = build_lr_schedulers(optimizers, config)
-        (0, config.optimizers.generator.lr),
+    logger.info(f"build lr_schedulers:\n{lr_schedulers}")
-        (int(config.data.train.scheduler.start_proportion * config.max_iteration), config.optimizers.generator.lr),
-        (config.max_iteration, config.data.train.scheduler.target_lr)
-    ]
-    lr_scheduler_g = PiecewiseLinear(optimizer_g, param_name="lr", milestones_values=milestones_values)
-
-    milestones_values = [
-        (0, config.optimizers.discriminator.lr),
-        (int(config.data.train.scheduler.start_proportion * config.max_iteration), config.optimizers.discriminator.lr),
-        (config.max_iteration, config.data.train.scheduler.target_lr)
-    ]
-    lr_scheduler_d = PiecewiseLinear(optimizer_d, param_name="lr", milestones_values=milestones_values)
 
     gan_loss_cfg = OmegaConf.to_container(config.loss.gan)
     gan_loss_cfg.pop("weight")
@@ -116,26 +123,26 @@ def get_trainer(config, logger):
         identity["a"], cam_identity_pred["a"], heatmap["a2a"] = generators["b2a"](real["a"])
         identity["b"], cam_identity_pred["b"], heatmap["b2b"] = generators["a2b"](real["b"])
 
-        optimizer_g.zero_grad()
+        optimizers["g"].zero_grad()
         loss_g = dict()
         for n in ["a", "b"]:
             loss_g.update(criterion_generator(n, real[n], fake[n], rec[n], identity[n], cam_generator_pred[n],
                                               cam_identity_pred[n], discriminators["l" + n], discriminators["g" + n]))
         sum(loss_g.values()).backward()
-        optimizer_g.step()
+        optimizers["g"].step()
         for generator in generators.values():
             generator.apply(rho_clipper)
         for discriminator in discriminators.values():
             discriminator.requires_grad_(True)
 
-        optimizer_d.zero_grad()
+        optimizers["d"].zero_grad()
         loss_d = dict()
         for k in discriminators.keys():
             n = k[-1]  # "a" or "b"
             loss_d.update(
                 criterion_discriminator(k, discriminators[k], real[n], image_buffers[k].query(fake[n].detach())))
         sum(loss_d.values()).backward()
-        optimizer_d.step()
+        optimizers["d"].step()
 
         for h in heatmap:
             heatmap[h] = heatmap[h].detach()
@@ -157,19 +164,19 @@ def get_trainer(config, logger):
 
     trainer = Engine(_step)
     trainer.logger = logger
-    trainer.add_event_handler(Events.ITERATION_COMPLETED, lr_scheduler_g)
+    for lr_shd in lr_schedulers.values():
-    trainer.add_event_handler(Events.ITERATION_COMPLETED, lr_scheduler_d)
+        trainer.add_event_handler(Events.ITERATION_COMPLETED, lr_shd)
 
     RunningAverage(output_transform=lambda x: sum(x["loss"]["g"].values())).attach(trainer, "loss_g")
     RunningAverage(output_transform=lambda x: sum(x["loss"]["d"].values())).attach(trainer, "loss_d")
 
-    to_save = dict(optimizer_d=optimizer_d, optimizer_g=optimizer_g, trainer=trainer, lr_scheduler_d=lr_scheduler_d,
+    to_save = dict(trainer=trainer)
-                   lr_scheduler_g=lr_scheduler_g)
+    to_save.update({f"lr_scheduler_{k}": lr_schedulers[k] for k in lr_schedulers})
+    to_save.update({f"optimizer_{k}": optimizers[k] for k in optimizers})
     to_save.update({f"generator_{k}": generators[k] for k in generators})
     to_save.update({f"discriminator_{k}": discriminators[k] for k in discriminators})
-
+    setup_common_handlers(trainer, config, to_save=to_save, clear_cuda_cache=True,
-    setup_common_handlers(trainer, config, to_save=to_save, metrics_to_print=["loss_g", "loss_d"],
+                          end_event=Events.ITERATION_COMPLETED(once=config.max_iteration))
-                          clear_cuda_cache=False, end_event=Events.ITERATION_COMPLETED(once=config.max_iteration))
 
     def output_transform(output):
         loss = dict()
@@ -185,46 +192,36 @@ def get_trainer(config, logger):
     if tensorboard_handler is not None:
         tensorboard_handler.attach(
             trainer,
-            log_handler=OptimizerParamsHandler(optimizer_g, tag="optimizer_g"),
+            log_handler=OptimizerParamsHandler(optimizers["g"], tag="optimizer_g"),
             event_name=Events.ITERATION_STARTED(every=config.interval.tensorboard.scalar)
         )
 
         @trainer.on(Events.ITERATION_COMPLETED(every=config.interval.tensorboard.image))
         def show_images(engine):
             output = engine.state.output
-            image_a_order = ["real_a", "fake_b", "rec_a", "id_a"]
+            image_order = dict(
-            image_b_order = ["real_b", "fake_a", "rec_b", "id_b"]
+                a=["real_a", "fake_b", "rec_a", "id_a"],
-
+                b=["real_b", "fake_a", "rec_b", "id_b"]
+            )
             output["img"]["generated"]["real_a"] = fuse_attention_map(
                 output["img"]["generated"]["real_a"], output["img"]["heatmap"]["a2b"])
             output["img"]["generated"]["real_b"] = fuse_attention_map(
                 output["img"]["generated"]["real_b"], output["img"]["heatmap"]["b2a"])
-
+            for k in "ab":
-            tensorboard_handler.writer.add_image(
+                tensorboard_handler.writer.add_image(
-                "train/a",
+                    f"train/{k}",
-                make_2d_grid([output["img"]["generated"][o] for o in image_a_order]),
+                    make_2d_grid([output["img"]["generated"][o] for o in image_order[k]]),
-                engine.state.iteration
+                    engine.state.iteration
-            )
+                )
-            tensorboard_handler.writer.add_image(
-                "train/b",
-                make_2d_grid([output["img"]["generated"][o] for o in image_b_order]),
-                engine.state.iteration
-            )
 
             with torch.no_grad():
                 g = torch.Generator()
                 g.manual_seed(config.misc.random_seed)
                 indices = torch.randperm(len(engine.state.test_dataset), generator=g).tolist()[:10]
-
+                test_images = dict(
-                empty_grid = torch.zeros(0, config.model.generator.in_channels, config.model.generator.img_size,
+                    a=[[], [], [], []],
-                                         config.model.generator.img_size)
+                    b=[[], [], [], []]
-                fake = dict(a=empty_grid.clone(), b=empty_grid.clone())
+                )
-                rec = dict(a=empty_grid.clone(), b=empty_grid.clone())
-                heatmap = dict(a2b=torch.zeros(0, 1, config.model.generator.img_size,
-                                               config.model.generator.img_size),
-                               b2a=torch.zeros(0, 1, config.model.generator.img_size,
-                                               config.model.generator.img_size))
-                real = dict(a=empty_grid.clone(), b=empty_grid.clone())
                 for i in indices:
                     batch = convert_tensor(engine.state.test_dataset[i], idist.device())
 
@@ -234,27 +231,18 @@ def get_trainer(config, logger):
                     rec_a = generators["b2a"](fake_b)[0]
                     rec_b = generators["a2b"](fake_a)[0]
 
-                    fake["a"] = torch.cat([fake["a"], fake_a.cpu()])
+                    for idx, im in enumerate(
-                    fake["b"] = torch.cat([fake["b"], fake_b.cpu()])
+                            [attention_colored_map(heatmap_a2b, real_a.size()[-2:]), real_a, fake_b, rec_a]):
-                    real["a"] = torch.cat([real["a"], real_a.cpu()])
+                        test_images["a"][idx].append(im.cpu())
-                    real["b"] = torch.cat([real["b"], real_b.cpu()])
+                    for idx, im in enumerate(
-                    rec["a"] = torch.cat([rec["a"], rec_a.cpu()])
+                            [attention_colored_map(heatmap_b2a, real_b.size()[-2:]), real_b, fake_a, rec_b]):
-                    rec["b"] = torch.cat([rec["b"], rec_b.cpu()])
+                        test_images["b"][idx].append(im.cpu())
-
+                for n in "ab":
-                    heatmap["a2b"] = torch.cat(
+                    tensorboard_handler.writer.add_image(
-                        [heatmap["a2b"], torch.nn.functional.interpolate(heatmap_a2b, real_a.size()[-2:]).cpu()])
+                        f"test/{n}",
-                    heatmap["b2a"] = torch.cat(
+                        make_2d_grid([torch.cat(ti) for ti in test_images[n]]),
-                        [heatmap["b2a"], torch.nn.functional.interpolate(heatmap_b2a, real_a.size()[-2:]).cpu()])
+                        engine.state.iteration
-                tensorboard_handler.writer.add_image(
+                    )
-                    "test/a",
-                    make_2d_grid([heatmap["a2b"].expand_as(real["a"]), real["a"], fake["b"], rec["a"]]),
-                    engine.state.iteration
-                )
-                tensorboard_handler.writer.add_image(
-                    "test/b",
-                    make_2d_grid([heatmap["b2a"].expand_as(real["a"]), real["b"], fake["a"], rec["b"]]),
-                    engine.state.iteration
-                )
 
     return trainer
 

util/handler.py

@@ -17,7 +17,7 @@ def empty_cuda_cache(_):
 
 
 def setup_common_handlers(trainer: Engine, config, stop_on_nan=True, clear_cuda_cache=False, use_profiler=True,
-                          to_save=None, metrics_to_print=None, end_event=None):
+                          to_save=None, end_event=None, set_epoch_for_dist_sampler=True):
     """
     Helper method to setup trainer with common handlers.
     1. TerminateOnNan
@@ -30,21 +30,21 @@ def setup_common_handlers(trainer: Engine, config, stop_on_nan=True, clear_cuda_
     :param clear_cuda_cache:
     :param use_profiler:
     :param to_save:
-    :param metrics_to_print:
     :param end_event:
+    :param set_epoch_for_dist_sampler:
     :return:
     """
-
+    if set_epoch_for_dist_sampler:
-    if isinstance(trainer.state.dataloader.sampler, DistributedSampler):
         @trainer.on(Events.EPOCH_STARTED)
         def distrib_set_epoch(engine):
-            trainer.logger.debug(f"set_epoch {engine.state.epoch - 1} for DistributedSampler")
+            if isinstance(trainer.state.dataloader.sampler, DistributedSampler):
-            trainer.state.dataloader.sampler.set_epoch(engine.state.epoch - 1)
+                trainer.logger.debug(f"set_epoch {engine.state.epoch - 1} for DistributedSampler")
+                trainer.state.dataloader.sampler.set_epoch(engine.state.epoch - 1)
 
-    @trainer.on(Events.STARTED)
+    @trainer.on(Events.STARTED | Events.EPOCH_COMPLETED(once=1))
-    @idist.one_rank_only()
+    def print_info(engine):
-    def print_dataloader_size(engine):
         engine.logger.info(f"data loader length: {len(engine.state.dataloader)}")
+        engine.logger.info(f"- GPU util: \n{torch.cuda.memory_summary(0)}")
 
     if stop_on_nan:
         trainer.add_event_handler(Events.ITERATION_COMPLETED, TerminateOnNan())
@@ -62,20 +62,8 @@ def setup_common_handlers(trainer: Engine, config, stop_on_nan=True, clear_cuda_
         def log_intermediate_results():
             profiler.print_results(profiler.get_results())
 
-    print_interval_event = Events.ITERATION_COMPLETED(every=config.interval.print_per_iteration) | Events.COMPLETED
-
     ProgressBar(ncols=0).attach(trainer, "all")
 
-    if metrics_to_print is not None:
-        @trainer.on(print_interval_event)
-        def print_interval(engine):
-            print_str = f"epoch:{engine.state.epoch} iter:{engine.state.iteration}\t"
-            for m in metrics_to_print:
-                if m not in engine.state.metrics:
-                    continue
-                print_str += f"{m}={engine.state.metrics[m]:.3f} "
-            engine.logger.debug(print_str)
-
     if to_save is not None:
         checkpoint_handler = Checkpoint(to_save, DiskSaver(dirname=config.output_dir, require_empty=False),
                                         n_saved=config.checkpoint.n_saved, filename_prefix=config.name)
@@ -86,6 +74,7 @@ def setup_common_handlers(trainer: Engine, config, stop_on_nan=True, clear_cuda_
                 if not checkpoint_path.exists():
                     raise FileNotFoundError(f"Checkpoint '{checkpoint_path}' is not found")
                 ckp = torch.load(checkpoint_path.as_posix(), map_location="cpu")
+                trainer.logger.info(f"load state_dict for {ckp.keys()}")
                 Checkpoint.load_objects(to_load=to_save, checkpoint=ckp)
                 engine.logger.info(f"resume from a checkpoint {checkpoint_path}")
         trainer.add_event_handler(Events.EPOCH_COMPLETED(every=config.checkpoint.epoch_interval) | Events.COMPLETED,

util/image.py

@@ -5,6 +5,21 @@ import warnings
 from torch.nn.functional import interpolate
 
 
+def attention_colored_map(attentions, size=None, cmap_name="jet"):
+    assert attentions.dim() == 4 and attentions.size(1) == 1
+
+    min_attentions = attentions.view(attentions.size(0), -1).min(1, keepdim=True)[0].view(attentions.size(0), 1, 1, 1)
+    attentions -= min_attentions
+    attentions /= attentions.view(attentions.size(0), -1).max(1, keepdim=True)[0].view(attentions.size(0), 1, 1, 1)
+
+    if size is not None and attentions.size()[-2:] != size:
+        assert len(size) == 2, "for interpolate, size must be (x, y), have two dim"
+        attentions = interpolate(attentions, size, mode="bilinear", align_corners=False)
+    cmap = get_cmap(cmap_name)
+    ca = cmap(attentions.squeeze(1).cpu())[:, :, :, :3]
+    return torch.from_numpy(ca).permute(0, 3, 1, 2).contiguous()
+
+
 def fuse_attention_map(images, attentions, cmap_name="jet", alpha=0.5):
     """
 
@@ -20,18 +35,7 @@ def fuse_attention_map(images, attentions, cmap_name="jet", alpha=0.5):
     if attentions.size(1) != 1:
         warnings.warn(f"attentions's channels should be 1 but got {attentions.size(1)}")
         return images
-
+    colored_attentions = attention_colored_map(attentions, images.size()[-2:], cmap_name).to(images.device)
-    min_attentions = attentions.view(attentions.size(0), -1).min(1, keepdim=True)[0].view(attentions.size(0), 1, 1, 1)
-    attentions -= min_attentions
-    attentions /= attentions.view(attentions.size(0), -1).max(1, keepdim=True)[0].view(attentions.size(0), 1, 1, 1)
-
-    if images.size() != attentions.size():
-        attentions = interpolate(attentions, images.size()[-2:])
-    colored_attentions = torch.zeros_like(images)
-    cmap = get_cmap(cmap_name)
-    for i, at in enumerate(attentions):
-        ca = cmap(at[0].cpu().numpy())[:, :, :3]
-        colored_attentions[i] = torch.from_numpy(ca).permute(2, 0, 1).view(colored_attentions[i].size())
     return images * alpha + colored_attentions * (1 - alpha)