Created
June 21, 2023 06:33
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torch.repeat_interleave alternative
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| def tile_along_axis(x, dim, n_tile): | |
| init_dim = x.size(dim) | |
| repeat_idx = [1] * x.dim() | |
| repeat_idx[dim] = n_tile | |
| x = x.repeat(*(repeat_idx)) | |
| order_index = torch.tensor( | |
| torch.cat([init_dim * torch.arange(n_tile, device=x.device) + i for i in range(init_dim)]), | |
| dtype=torch.long, device=x.device) | |
| return torch.index_select(x, dim, order_index) |
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