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readd xformers attnblock

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C43H66N12O12S2 2022-10-17 22:18:59 +03:00 committed by AUTOMATIC1111
parent 2043c4a231
commit 84823275e8
1 changed files with 15 additions and 0 deletions
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15
modules/sd_hijack_optimizations.py
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@ -292,3 +292,18 @@ def cross_attention_attnblock_forward(self, x):
return h3 return h3
def xformers_attnblock_forward(self, x):
try:
h_ = x
h_ = self.norm(h_)
q = self.q(h_)
k = self.k(h_)
v = self.v(h_)
b, c, h, w = q.shape
q, k, v = map(lambda t: rearrange(t, 'b c h w -> b (h w) c'), (q, k, v))
out = xformers.ops.memory_efficient_attention(q, k, v)
out = rearrange(out, 'b (h w) c -> b c h w', h=h)
out = self.proj_out(out)
return x + out
except NotImplementedError:
return cross_attention_attnblock_forward(self, x)