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remove attention abstraction (#5324)

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contentis 2024-10-22 11:02:38 -07:00 committed by GitHub
parent 8ce2a1052c
commit 5a8a48931a
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1 changed files with 8 additions and 10 deletions
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18
comfy/ldm/modules/diffusionmodules/mmdit.py
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@ -5,7 +5,7 @@ from typing import Dict, Optional
import numpy as np
import torch
import torch.nn as nn
from .. import attention
from ..attention import optimized_attention
from einops import rearrange, repeat
from .util import timestep_embedding
import comfy.ops
@ -266,8 +266,6 @@ def split_qkv(qkv, head_dim):
qkv = qkv.reshape(qkv.shape[0], qkv.shape[1], 3, -1, head_dim).movedim(2, 0)
return qkv[0], qkv[1], qkv[2]
def optimized_attention(qkv, num_heads):
return attention.optimized_attention(qkv[0], qkv[1], qkv[2], num_heads)
class SelfAttention(nn.Module):
ATTENTION_MODES = ("xformers", "torch", "torch-hb", "math", "debug")
@ -326,9 +324,9 @@ class SelfAttention(nn.Module):
return x
def forward(self, x: torch.Tensor) -> torch.Tensor:
qkv = self.pre_attention(x)
q, k, v = self.pre_attention(x)
x = optimized_attention(
qkv, num_heads=self.num_heads
q, k, v, heads=self.num_heads
)
x = self.post_attention(x)
return x
@ -531,8 +529,8 @@ class DismantledBlock(nn.Module):
assert not self.pre_only
qkv, intermediates = self.pre_attention(x, c)
attn = optimized_attention(
qkv,
num_heads=self.attn.num_heads,
qkv[0], qkv[1], qkv[2],
heads=self.attn.num_heads,
)
return self.post_attention(attn, *intermediates)
@ -557,8 +555,8 @@ def _block_mixing(context, x, context_block, x_block, c):
qkv = tuple(o)
attn = optimized_attention(
qkv,
num_heads=x_block.attn.num_heads,
qkv[0], qkv[1], qkv[2],
heads=x_block.attn.num_heads,
)
context_attn, x_attn = (
attn[:, : context_qkv[0].shape[1]],
@ -642,7 +640,7 @@ class SelfAttentionContext(nn.Module):
def forward(self, x):
qkv = self.qkv(x)
q, k, v = split_qkv(qkv, self.dim_head)
x = optimized_attention((q.reshape(q.shape[0], q.shape[1], -1), k, v), self.heads)
x = optimized_attention(q.reshape(q.shape[0], q.shape[1], -1), k, v, heads=self.heads)
return self.proj(x)
class ContextProcessorBlock(nn.Module):