Support tensorboard to trace the training of Synthesizer (#98)

* add tensorborad tracing

* add log_every params

synthesizer/train.py

@@ -2,11 +2,12 @@ import torch
 import torch.nn.functional as F
 from torch import optim
 from torch.utils.data import DataLoader
+from torch.utils.tensorboard import SummaryWriter
 from synthesizer import audio
 from synthesizer.models.tacotron import Tacotron
 from synthesizer.synthesizer_dataset import SynthesizerDataset, collate_synthesizer
 from synthesizer.utils import ValueWindow, data_parallel_workaround
-from synthesizer.utils.plot import plot_spectrogram
+from synthesizer.utils.plot import plot_spectrogram, plot_spectrogram_and_trace
 from synthesizer.utils.symbols import symbols
 from synthesizer.utils.text import sequence_to_text
 from vocoder.display import *
@@ -23,7 +24,7 @@ def time_string():
     return datetime.now().strftime("%Y-%m-%d %H:%M")
 
 def train(run_id: str, syn_dir: str, models_dir: str, save_every: int,
-         backup_every: int, force_restart:bool, hparams):
+         backup_every: int, log_every:int, force_restart:bool, hparams):
 
     syn_dir = Path(syn_dir)
     models_dir = Path(models_dir)
@@ -123,6 +124,9 @@ def train(run_id: str, syn_dir: str, models_dir: str, save_every: int,
                              shuffle=True,
                              pin_memory=True)
 
+    # tracing training step
+    sw = SummaryWriter(log_dir=model_dir.joinpath("logs"))
+
     for i, session in enumerate(hparams.tts_schedule):
         current_step = model.get_step()
 
@@ -208,9 +212,13 @@ def train(run_id: str, syn_dir: str, models_dir: str, save_every: int,
                 step = model.get_step()
                 k = step // 1000
 
+                
                 msg = f"| Epoch: {epoch}/{epochs} ({i}/{steps_per_epoch}) | Loss: {loss_window.average:#.4} | {1./time_window.average:#.2} steps/s | Step: {k}k | "
                 stream(msg)
 
+                if log_every != 0 and step % log_every == 0 :
+                    sw.add_scalar("training/loss", loss_window.average, step)
+
                 # Backup or save model as appropriate
                 if backup_every != 0 and step % backup_every == 0 : 
                     backup_fpath = Path("{}/{}_{}k.pt".format(str(weights_fpath.parent), run_id, k))
@@ -220,6 +228,7 @@ def train(run_id: str, syn_dir: str, models_dir: str, save_every: int,
                     # Must save latest optimizer state to ensure that resuming training
                     # doesn't produce artifacts
                     model.save(weights_fpath, optimizer)
+                    
 
                 # Evaluate model to generate samples
                 epoch_eval = hparams.tts_eval_interval == -1 and i == steps_per_epoch  # If epoch is done
@@ -233,7 +242,8 @@ def train(run_id: str, syn_dir: str, models_dir: str, save_every: int,
                             mel_prediction = np_now(m2_hat[sample_idx]).T[:mel_length]
                             target_spectrogram = np_now(mels[sample_idx]).T[:mel_length]
                             attention_len = mel_length // model.r
-
+                            # eval_loss = F.mse_loss(mel_prediction, target_spectrogram)
+                            # sw.add_scalar("validing/loss", eval_loss.item(), step)
                             eval_model(attention=np_now(attention[sample_idx][:, :attention_len]),
                                        mel_prediction=mel_prediction,
                                        target_spectrogram=target_spectrogram,
@@ -244,7 +254,8 @@ def train(run_id: str, syn_dir: str, models_dir: str, save_every: int,
                                        wav_dir=wav_dir,
                                        sample_num=sample_idx + 1,
                                        loss=loss,
-                                       hparams=hparams)
+                                       hparams=hparams,
+                                       sw=sw)
 
                 # Break out of loop to update training schedule
                 if step >= max_step:
@@ -254,10 +265,11 @@ def train(run_id: str, syn_dir: str, models_dir: str, save_every: int,
             print("")
 
 def eval_model(attention, mel_prediction, target_spectrogram, input_seq, step,
-               plot_dir, mel_output_dir, wav_dir, sample_num, loss, hparams):
+               plot_dir, mel_output_dir, wav_dir, sample_num, loss, hparams, sw):
     # Save some results for evaluation
     attention_path = str(plot_dir.joinpath("attention_step_{}_sample_{}".format(step, sample_num)))
-    save_attention(attention, attention_path)
+    # save_attention(attention, attention_path)
+    save_and_trace_attention(attention, attention_path, sw, step)
 
     # save predicted mel spectrogram to disk (debug)
     mel_output_fpath = mel_output_dir.joinpath("mel-prediction-step-{}_sample_{}.npy".format(step, sample_num))
@@ -271,7 +283,15 @@ def eval_model(attention, mel_prediction, target_spectrogram, input_seq, step,
     # save real and predicted mel-spectrogram plot to disk (control purposes)
     spec_fpath = plot_dir.joinpath("step-{}-mel-spectrogram_sample_{}.png".format(step, sample_num))
     title_str = "{}, {}, step={}, loss={:.5f}".format("Tacotron", time_string(), step, loss)
-    plot_spectrogram(mel_prediction, str(spec_fpath), title=title_str,
-                     target_spectrogram=target_spectrogram,
-                     max_len=target_spectrogram.size // hparams.num_mels)
+    # plot_spectrogram(mel_prediction, str(spec_fpath), title=title_str,
+    #                  target_spectrogram=target_spectrogram,
+    #                  max_len=target_spectrogram.size // hparams.num_mels)
+    plot_spectrogram_and_trace(
+        mel_prediction, 
+        str(spec_fpath), 
+        title=title_str,
+        target_spectrogram=target_spectrogram,
+        max_len=target_spectrogram.size // hparams.num_mels,
+        sw=sw,
+        step=step)
     print("Input at step {}: {}".format(step, sequence_to_text(input_seq)))

synthesizer/utils/plot.py

@@ -74,3 +74,42 @@ def plot_spectrogram(pred_spectrogram, path, title=None, split_title=False, targ
 	plt.tight_layout()
 	plt.savefig(path, format="png")
 	plt.close()
+
+
+def plot_spectrogram_and_trace(pred_spectrogram, path, title=None, split_title=False, target_spectrogram=None, max_len=None, auto_aspect=False, sw=None, step=0):
+	if max_len is not None:
+		target_spectrogram = target_spectrogram[:max_len]
+		pred_spectrogram = pred_spectrogram[:max_len]
+
+	if split_title:
+		title = split_title_line(title)
+
+	fig = plt.figure(figsize=(10, 8))
+	# Set common labels
+	fig.text(0.5, 0.18, title, horizontalalignment="center", fontsize=16)
+
+	#target spectrogram subplot
+	if target_spectrogram is not None:
+		ax1 = fig.add_subplot(311)
+		ax2 = fig.add_subplot(312)
+
+		if auto_aspect:
+			im = ax1.imshow(np.rot90(target_spectrogram), aspect="auto", interpolation="none")
+		else:
+			im = ax1.imshow(np.rot90(target_spectrogram), interpolation="none")
+		ax1.set_title("Target Mel-Spectrogram")
+		fig.colorbar(mappable=im, shrink=0.65, orientation="horizontal", ax=ax1)
+		ax2.set_title("Predicted Mel-Spectrogram")
+	else:
+		ax2 = fig.add_subplot(211)
+
+	if auto_aspect:
+		im = ax2.imshow(np.rot90(pred_spectrogram), aspect="auto", interpolation="none")
+	else:
+		im = ax2.imshow(np.rot90(pred_spectrogram), interpolation="none")
+	fig.colorbar(mappable=im, shrink=0.65, orientation="horizontal", ax=ax2)
+
+	plt.tight_layout()
+	plt.savefig(path, format="png")
+	sw.add_figure("spectrogram", fig, step)
+	plt.close()

synthesizer_train.py

@@ -21,6 +21,8 @@ if __name__ == "__main__":
     parser.add_argument("-b", "--backup_every", type=int, default=25000, help= \
         "Number of steps between backups of the model. Set to 0 to never make backups of the "
         "model.")
+    parser.add_argument("-l", "--log_every", type=int, default=200, help= \
+        "Number of steps between summary the training info in tensorboard")
     parser.add_argument("-f", "--force_restart", action="store_true", help= \
         "Do not load any saved model and restart from scratch.")
     parser.add_argument("--hparams", default="",

vocoder/display.py

@@ -91,6 +91,14 @@ def save_attention(attn, path) :
     plt.close(fig)
 
 
+def save_and_trace_attention(attn, path, sw, step):
+    fig = plt.figure(figsize=(12, 6))
+    plt.imshow(attn.T, interpolation='nearest', aspect='auto')
+    fig.savefig(f'{path}.png', bbox_inches='tight')
+    sw.add_figure('attention', fig, step)
+    plt.close(fig)
+
+
 def save_spectrogram(M, path, length=None) :
     M = np.flip(M, axis=0)
     if length : M = M[:, :length]