diff options
| -rw-r--r-- | extensions-builtin/Lora/network_oft.py | 59 |
1 files changed, 38 insertions, 21 deletions
diff --git a/extensions-builtin/Lora/network_oft.py b/extensions-builtin/Lora/network_oft.py index e43c9a1d..ff61b369 100644 --- a/extensions-builtin/Lora/network_oft.py +++ b/extensions-builtin/Lora/network_oft.py @@ -1,5 +1,6 @@ import torch import network +from einops import rearrange class ModuleTypeOFT(network.ModuleType): @@ -30,35 +31,51 @@ class NetworkModuleOFT(network.NetworkModule): self.org_module: list[torch.Module] = [self.sd_module] - def merge_weight(self, R_weight, org_weight): - R_weight = R_weight.to(org_weight.device, dtype=org_weight.dtype) - if org_weight.dim() == 4: - weight = torch.einsum("oihw, op -> pihw", org_weight, R_weight) - else: - weight = torch.einsum("oi, op -> pi", org_weight, R_weight) - return weight + # def merge_weight(self, R_weight, org_weight): + # R_weight = R_weight.to(org_weight.device, dtype=org_weight.dtype) + # if org_weight.dim() == 4: + # weight = torch.einsum("oihw, op -> pihw", org_weight, R_weight) + # else: + # weight = torch.einsum("oi, op -> pi", org_weight, R_weight) + # weight = torch.einsum( + # "k n m, k n ... -> k m ...", + # self.oft_diag * scale + torch.eye(self.block_size, device=device), + # org_weight + # ) + # return weight def get_weight(self, oft_blocks, multiplier=None): - constraint = self.constraint.to(oft_blocks.device, dtype=oft_blocks.dtype) + # constraint = self.constraint.to(oft_blocks.device, dtype=oft_blocks.dtype) - block_Q = oft_blocks - oft_blocks.transpose(1, 2) - norm_Q = torch.norm(block_Q.flatten()) - new_norm_Q = torch.clamp(norm_Q, max=constraint) - block_Q = block_Q * ((new_norm_Q + 1e-8) / (norm_Q + 1e-8)) - m_I = torch.eye(self.block_size, device=oft_blocks.device).unsqueeze(0).repeat(self.num_blocks, 1, 1) - block_R = torch.matmul(m_I + block_Q, (m_I - block_Q).inverse()) + # block_Q = oft_blocks - oft_blocks.transpose(1, 2) + # norm_Q = torch.norm(block_Q.flatten()) + # new_norm_Q = torch.clamp(norm_Q, max=constraint) + # block_Q = block_Q * ((new_norm_Q + 1e-8) / (norm_Q + 1e-8)) + # m_I = torch.eye(self.block_size, device=oft_blocks.device).unsqueeze(0).repeat(self.num_blocks, 1, 1) + # block_R = torch.matmul(m_I + block_Q, (m_I - block_Q).inverse()) - block_R_weighted = multiplier * block_R + (1 - multiplier) * m_I - R = torch.block_diag(*block_R_weighted) + # block_R_weighted = multiplier * block_R + (1 - multiplier) * m_I + # R = torch.block_diag(*block_R_weighted) + #return R + return self.oft_blocks - return R def calc_updown(self, orig_weight): multiplier = self.multiplier() * self.calc_scale() - R = self.get_weight(self.oft_blocks, multiplier) - merged_weight = self.merge_weight(R, orig_weight) - - updown = merged_weight.to(orig_weight.device, dtype=orig_weight.dtype) - orig_weight + #R = self.get_weight(self.oft_blocks, multiplier) + R = self.oft_blocks.to(orig_weight.device, dtype=orig_weight.dtype) + #merged_weight = self.merge_weight(R, orig_weight) + + orig_weight = rearrange(orig_weight, '(k n) ... -> k n ...', k=self.num_blocks, n=self.block_size) + weight = torch.einsum( + 'k n m, k n ... -> k m ...', + R * multiplier + torch.eye(self.block_size, device=orig_weight.device), + orig_weight + ) + weight = rearrange(weight, 'k m ... -> (k m) ...') + + #updown = merged_weight.to(orig_weight.device, dtype=orig_weight.dtype) - orig_weight + updown = weight.to(orig_weight.device, dtype=orig_weight.dtype) - orig_weight output_shape = orig_weight.shape orig_weight = orig_weight |