Add Birch-san's sub-quadratic attention implementation

1 files changed, 6 insertions, 9 deletions

diff --git a/modules/sd_hijack.py b/modules/sd_hijack.py
index 690a9ec2..019a6f3f 100644
--- a/modules/sd_hijack.py
+++ b/modules/sd_hijack.py
@@ -7,8 +7,6 @@ from modules.hypernetworks import hypernetwork
 from modules.shared import cmd_opts

 from modules import sd_hijack_clip, sd_hijack_open_clip, sd_hijack_unet

 

-from modules.sd_hijack_optimizations import invokeAI_mps_available

-

 import ldm.modules.attention

 import ldm.modules.diffusionmodules.model

 import ldm.modules.diffusionmodules.openaimodel

@@ -40,17 +38,16 @@ def apply_optimizations():
         print("Applying xformers cross attention optimization.")

         ldm.modules.attention.CrossAttention.forward = sd_hijack_optimizations.xformers_attention_forward

         ldm.modules.diffusionmodules.model.AttnBlock.forward = sd_hijack_optimizations.xformers_attnblock_forward

+    elif cmd_opts.opt_sub_quad_attention:

+        print("Applying sub-quadratic cross attention optimization.")

+        ldm.modules.attention.CrossAttention.forward = sd_hijack_optimizations.sub_quad_attention_forward

+        ldm.modules.diffusionmodules.model.AttnBlock.forward = sd_hijack_optimizations.sub_quad_attnblock_forward

     elif cmd_opts.opt_split_attention_v1:

         print("Applying v1 cross attention optimization.")

         ldm.modules.attention.CrossAttention.forward = sd_hijack_optimizations.split_cross_attention_forward_v1

     elif not cmd_opts.disable_opt_split_attention and (cmd_opts.opt_split_attention_invokeai or not torch.cuda.is_available()):

-        if not invokeAI_mps_available and shared.device.type == 'mps':

-            print("The InvokeAI cross attention optimization for MPS requires the psutil package which is not installed.")

-            print("Applying v1 cross attention optimization.")

-            ldm.modules.attention.CrossAttention.forward = sd_hijack_optimizations.split_cross_attention_forward_v1

-        else:

-            print("Applying cross attention optimization (InvokeAI).")

-            ldm.modules.attention.CrossAttention.forward = sd_hijack_optimizations.split_cross_attention_forward_invokeAI

+        print("Applying cross attention optimization (InvokeAI).")

+        ldm.modules.attention.CrossAttention.forward = sd_hijack_optimizations.split_cross_attention_forward_invokeAI

     elif not cmd_opts.disable_opt_split_attention and (cmd_opts.opt_split_attention or torch.cuda.is_available()):

         print("Applying cross attention optimization (Doggettx).")

         ldm.modules.attention.CrossAttention.forward = sd_hijack_optimizations.split_cross_attention_forward