#data-validation

A March 15, 2026 r/MachineLearning post introduced preflight, a lightweight PyTorch validator that reached 56 points and 13 comments by promising a fast pre-training gate for label leakage, NaNs, channel order, dead gradients, class imbalance, and VRAM risk.

A March 15, 2026 r/MachineLearning post introduced preflight, a new PyTorch-oriented CLI that runs 10 pre-training checks such as label leakage, NaN detection, gradient checks, and VRAM estimation before a job starts.