Unload sd_model before loading the other

1 files changed, 13 insertions, 8 deletions

diff --git a/modules/lowvram.py b/modules/lowvram.py
index f327c3df..a4652cb1 100644
--- a/modules/lowvram.py
+++ b/modules/lowvram.py
@@ -38,13 +38,18 @@ def setup_for_low_vram(sd_model, use_medvram):
     # see below for register_forward_pre_hook;

     # first_stage_model does not use forward(), it uses encode/decode, so register_forward_pre_hook is

     # useless here, and we just replace those methods

-    def first_stage_model_encode_wrap(self, encoder, x):

-        send_me_to_gpu(self, None)

-        return encoder(x)

 

-    def first_stage_model_decode_wrap(self, decoder, z):

-        send_me_to_gpu(self, None)

-        return decoder(z)

+    first_stage_model = sd_model.first_stage_model

+    first_stage_model_encode = sd_model.first_stage_model.encode

+    first_stage_model_decode = sd_model.first_stage_model.decode

+

+    def first_stage_model_encode_wrap(x):

+        send_me_to_gpu(first_stage_model, None)

+        return first_stage_model_encode(x)

+

+    def first_stage_model_decode_wrap(z):

+        send_me_to_gpu(first_stage_model, None)

+        return first_stage_model_decode(z)

 

     # remove three big modules, cond, first_stage, and unet from the model and then

     # send the model to GPU. Then put modules back. the modules will be in CPU.

@@ -56,8 +61,8 @@ def setup_for_low_vram(sd_model, use_medvram):
     # register hooks for those the first two models

     sd_model.cond_stage_model.transformer.register_forward_pre_hook(send_me_to_gpu)

     sd_model.first_stage_model.register_forward_pre_hook(send_me_to_gpu)

-    sd_model.first_stage_model.encode = lambda x, en=sd_model.first_stage_model.encode: first_stage_model_encode_wrap(sd_model.first_stage_model, en, x)

-    sd_model.first_stage_model.decode = lambda z, de=sd_model.first_stage_model.decode: first_stage_model_decode_wrap(sd_model.first_stage_model, de, z)

+    sd_model.first_stage_model.encode = first_stage_model_encode_wrap

+    sd_model.first_stage_model.decode = first_stage_model_decode_wrap

     parents[sd_model.cond_stage_model.transformer] = sd_model.cond_stage_model

 

     if use_medvram: