Save a csv containing the loss while training

modules/hypernetworks/hypernetwork.py

@@ -5,6 +5,7 @@ import os
 import sys
 import traceback
 import tqdm
+import csv
 
 import torch
 
@@ -174,7 +175,7 @@ def attention_CrossAttention_forward(self, x, context=None, mask=None):
     return self.to_out(out)
 
 
-def train_hypernetwork(hypernetwork_name, learn_rate, data_root, log_directory, steps, create_image_every, save_hypernetwork_every, template_file, preview_image_prompt):
+def train_hypernetwork(hypernetwork_name, learn_rate, data_root, log_directory, steps, create_image_every, save_hypernetwork_every, write_csv_every, template_file, preview_image_prompt):
     assert hypernetwork_name, 'hypernetwork not selected'
 
     path = shared.hypernetworks.get(hypernetwork_name, None)
@@ -256,6 +257,20 @@ def train_hypernetwork(hypernetwork_name, learn_rate, data_root, log_directory,
             last_saved_file = os.path.join(hypernetwork_dir, f'{hypernetwork_name}-{hypernetwork.step}.pt')
             hypernetwork.save(last_saved_file)
 
+        print(f"{write_csv_every} > {hypernetwork.step % write_csv_every == 0}, {write_csv_every}")
+        if write_csv_every > 0 and hypernetwork_dir is not None and hypernetwork.step % write_csv_every == 0:
+            write_csv_header = False if os.path.exists(os.path.join(hypernetwork_dir, "hypernetwork_loss.csv")) else True
+            
+            with open(os.path.join(hypernetwork_dir, "hypernetwork_loss.csv"), "a+") as fout:
+
+                csv_writer = csv.DictWriter(fout, fieldnames=["step", "loss"])
+                
+                if write_csv_header:
+                    csv_writer.writeheader()
+
+                csv_writer.writerow({"step": hypernetwork.step, 
+                    "loss": f"{losses.mean():.7f}"})
+
         if hypernetwork.step > 0 and images_dir is not None and hypernetwork.step % create_image_every == 0:
             last_saved_image = os.path.join(images_dir, f'{hypernetwork_name}-{hypernetwork.step}.png')
 

modules/textual_inversion/textual_inversion.py

@@ -6,6 +6,7 @@ import torch
 import tqdm
 import html
 import datetime
+import csv
 
 from PIL import Image, PngImagePlugin
 
@@ -172,7 +173,7 @@ def create_embedding(name, num_vectors_per_token, init_text='*'):
     return fn
 
 
-def train_embedding(embedding_name, learn_rate, data_root, log_directory, training_width, training_height, steps, create_image_every, save_embedding_every, template_file, save_image_with_stored_embedding, preview_image_prompt):
+def train_embedding(embedding_name, learn_rate, data_root, log_directory, training_width, training_height, steps, create_image_every, save_embedding_every, write_csv_every, template_file, save_image_with_stored_embedding, preview_image_prompt):
     assert embedding_name, 'embedding not selected'
 
     shared.state.textinfo = "Initializing textual inversion training..."
@@ -256,6 +257,20 @@ def train_embedding(embedding_name, learn_rate, data_root, log_directory, traini
             last_saved_file = os.path.join(embedding_dir, f'{embedding_name}-{embedding.step}.pt')
             embedding.save(last_saved_file)
 
+        if write_csv_every > 0 and log_directory is not None and embedding.step % write_csv_every == 0:
+            write_csv_header = False if os.path.exists(os.path.join(log_directory, "textual_inversion_loss.csv")) else True
+
+            with open(os.path.join(log_directory, "textual_inversion_loss.csv"), "a+") as fout:
+
+                csv_writer = csv.DictWriter(fout, fieldnames=["epoch", "epoch_step", "loss"])
+                
+                if write_csv_header:
+                    csv_writer.writeheader()
+
+                csv_writer.writerow({"epoch": epoch_num + 1, 
+                    "epoch_step": epoch_step - 1, 
+                    "loss": f"{losses.mean():.7f}"})
+
         if embedding.step > 0 and images_dir is not None and embedding.step % create_image_every == 0:
             last_saved_image = os.path.join(images_dir, f'{embedding_name}-{embedding.step}.png')
 

modules/ui.py

@@ -1096,6 +1096,7 @@ def create_ui(wrap_gradio_gpu_call):
                     training_height = gr.Slider(minimum=64, maximum=2048, step=64, label="Height", value=512)
                     steps = gr.Number(label='Max steps', value=100000, precision=0)
                     create_image_every = gr.Number(label='Save an image to log directory every N steps, 0 to disable', value=500, precision=0)
+                    write_csv_every = gr.Number(label='Save an csv containing the loss to log directory every N steps, 0 to disable', value=500, precision=0)
                     save_embedding_every = gr.Number(label='Save a copy of embedding to log directory every N steps, 0 to disable', value=500, precision=0)
                     save_image_with_stored_embedding = gr.Checkbox(label='Save images with embedding in PNG chunks', value=True)
                     preview_image_prompt = gr.Textbox(label='Preview prompt', value="")
@@ -1174,6 +1175,7 @@ def create_ui(wrap_gradio_gpu_call):
                 steps,
                 create_image_every,
                 save_embedding_every,
+                write_csv_every,
                 template_file,
                 save_image_with_stored_embedding,
                 preview_image_prompt,
@@ -1195,6 +1197,7 @@ def create_ui(wrap_gradio_gpu_call):
                 steps,
                 create_image_every,
                 save_embedding_every,
+                write_csv_every,
                 template_file,
                 preview_image_prompt,
             ],