diff --git a/configs/synthesizers/UGATIT.yml b/configs/synthesizers/UGATIT.yml
index 55214b1..a92a541 100644
--- a/configs/synthesizers/UGATIT.yml
+++ b/configs/synthesizers/UGATIT.yml
@@ -97,7 +97,7 @@ data:
             std: [0.5, 0.5, 0.5]
   test:
     dataloader:
-      batch_size: 4
+      batch_size: 8
       shuffle: False
       num_workers: 1
       pin_memory: False
diff --git a/engine/UGATIT.py b/engine/UGATIT.py
index 568758d..518cbfe 100644
--- a/engine/UGATIT.py
+++ b/engine/UGATIT.py
@@ -4,6 +4,7 @@ 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
@@ -168,7 +169,7 @@ def get_trainer(config, logger):
     to_save.update({f"discriminator_{k}": discriminators[k] for k in discriminators})
 
     setup_common_handlers(trainer, config, to_save=to_save, metrics_to_print=["loss_g", "loss_d"],
-                          clear_cuda_cache=True, 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()
@@ -210,6 +211,51 @@ def get_trainer(config, logger):
                 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]
+
+                empty_grid = torch.zeros(0, config.model.generator.in_channels, config.model.generator.img_size,
+                                         config.model.generator.img_size)
+                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())
+
+                    real_a, real_b = batch["a"].view(1, *batch["a"].size()), batch["b"].view(1, *batch["a"].size())
+                    fake_b, _, heatmap_a2b = generators["a2b"](real_a)
+                    fake_a, _, heatmap_b2a = generators["b2a"](real_b)
+                    rec_a = generators["b2a"](fake_b)[0]
+                    rec_b = generators["a2b"](fake_a)[0]
+
+                    fake["a"] = torch.cat([fake["a"], fake_a.cpu()])
+                    fake["b"] = torch.cat([fake["b"], fake_b.cpu()])
+                    real["a"] = torch.cat([real["a"], real_a.cpu()])
+                    real["b"] = torch.cat([real["b"], real_b.cpu()])
+                    rec["a"] = torch.cat([rec["a"], rec_a.cpu()])
+                    rec["b"] = torch.cat([rec["b"], rec_b.cpu()])
+
+                    heatmap["a2b"] = torch.cat(
+                        [heatmap["a2b"], torch.nn.functional.interpolate(heatmap_a2b, real_a.size()[-2:]).cpu()])
+                    heatmap["b2a"] = torch.cat(
+                        [heatmap["b2a"], torch.nn.functional.interpolate(heatmap_b2a, real_a.size()[-2:]).cpu()])
+                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
 
 
@@ -225,6 +271,9 @@ def run(task, config, logger):
         logger.info(f"train with dataset:\n{train_dataset}")
         train_data_loader = idist.auto_dataloader(train_dataset, **config.data.train.dataloader)
         trainer = get_trainer(config, logger)
+        if idist.get_rank() == 0:
+            test_dataset = data.DATASET.build_with(config.data.test.dataset)
+            trainer.state.test_dataset = test_dataset
         try:
             trainer.run(train_data_loader, max_epochs=ceil(config.max_iteration / len(train_data_loader)))
         except Exception:
diff --git a/main.py b/main.py
index 9dff274..eeba793 100644
--- a/main.py
+++ b/main.py
@@ -16,6 +16,9 @@ def log_basic_info(logger, config):
     logger.info(f"Train {config.name}")
     logger.info(f"- PyTorch version: {torch.__version__}")
     logger.info(f"- Ignite version: {ignite.__version__}")
+    logger.info(f"- CUDA version: {torch.version.cuda}")
+    logger.info(f"- cuDNN version: {torch.backends.cudnn.version()}")
+    logger.info(f"- GPU type: {torch.cuda.get_device_name(0)}")
     if idist.get_world_size() > 1:
         logger.info("Distributed setting:\n")
         idist.show_config()