[BUG] RuntimeError: Expected all tensors to be on the same device, but found at least two devices, cuda:0 and cpu!

[dddlli]

RuntimeError: Expected all tensors to be on the same device, but found at least two devices, cuda:0 and cpu! (when checking argument for argument mat2 in method wrapper_CUDA_mm

import torch

from zeta.nn import MambaBlock

device = torch.device("cuda:0" if torch.cuda.is_available() else "cpu")

block = MambaBlock(dim=64, depth=1)

x = torch.randn(1, 10, 64).to(device)

y = block(x).to(device)

print(y.shape)

[github-actions]

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[trefoil0219]

The same bug：
File "/home/miniconda3/lib/python3.11/site-packages/zeta/nn/modules/simple_mamba.py", line 205, in selective_scan
x = deltaA[:, :, i] * x + deltaB_u[:, :, i]
~~~~~~~~~~~~~~~~^~~
RuntimeError: Expected all tensors to be on the same device, but found at least two devices, cuda:0 and cpu!

[xzytza]

add .to(x.device); but I think it is inefficient

[Bool1020]

Replace the following code at line 202 in zeta/nn/modules/simple_mamba.py with:

x = torch.zeros((b, d_in, n)).to(next(self.parameters()).device)

[github-actions]

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