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Fix Hunyuan 3D 2.1 multi-GPU worksplit: use cond_or_uncond instead of hardcoded chunk(2)

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Amp-Thread-ID: https://ampcode.com/threads/T-019da964-2cc8-77f9-9aae-23f65da233db
Co-authored-by: Amp <amp@ampcode.com>
This commit is contained in:
Jedrzej Kosinski 2026-04-19 23:28:30 -07:00
parent f0d550bd02
commit 4b8fa98c3c
1 changed files with 12 additions and 4 deletions
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16
comfy/ldm/hunyuan3dv2_1/hunyuandit.py
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@ -607,9 +607,14 @@ class HunYuanDiTPlain(nn.Module):
def forward(self, x, t, context, transformer_options = {}, **kwargs):
x = x.movedim(-1, -2)
uncond_emb, cond_emb = context.chunk(2, dim = 0)
context = torch.cat([cond_emb, uncond_emb], dim = 0)
cond_or_uncond = transformer_options.get("cond_or_uncond", [])
swap_cfg_halves = len(cond_or_uncond) == 2 and set(cond_or_uncond) == {0, 1}
if swap_cfg_halves:
first_half, second_half = context.chunk(2, dim = 0)
context = torch.cat([second_half, first_half], dim = 0)
main_condition = context
t = 1.0 - t
@ -657,5 +662,8 @@ class HunYuanDiTPlain(nn.Module):
output = self.final_layer(combined)
output = output.movedim(-2, -1) * (-1.0)
cond_emb, uncond_emb = output.chunk(2, dim = 0)
return torch.cat([uncond_emb, cond_emb])
if swap_cfg_halves:
first_half, second_half = output.chunk(2, dim = 0)
output = torch.cat([second_half, first_half], dim = 0)
return output