flashinfer.norm.rmsnorm

flashinfer.norm.rmsnorm(input: torch.Tensor, weight: torch.Tensor, eps: float = 1e-06, out: torch.Tensor | None = None) → torch.Tensor

Root mean square normalization.

out[i] = (input[i] / RMS(input)) * weight[i]

Parameters:

• input (torch.Tensor) – Input tensor, shape (batch_size, hidden_size).

• weight (torch.Tensor) – Weight tensor, shape (hidden_size,).

• eps (float) – Epsilon for numerical stability.

• out (Optional[torch.Tensor]) – The the output tensor, if specified, the kernel will update this tensor inplace.

Returns:

output – Normalized tensor, shape (batch_size, hidden_size).

Return type:

torch.Tensor