📐 Tensor Broadcasting Visualizer

Watch a small tensor stretch and clone itself to match a bigger tensor's shape — the real rule behind every PyTorch shape mismatch that "just works".

📋 How To Use This Lab
  1. Pick a shape for Tensor A (the small one) and Tensor B (the big one) from the dropdowns.
  2. Press 🔀 Broadcast ▶ → Stretchy clones A's cells to fill B's shape, then merges with B, cell by cell.
  3. Watch the result grid build live with real computed sums — every number is actually added, not scripted.
  4. Try an incompatible pair like (2,3) and (4,3) → see exactly why PyTorch would throw a shape error.
Tensor A Tensor B Result = Stretched A + B Stretchy Press "Broadcast ▶" to begin
🤖 STRETCHYI'm ready! Pick two shapes and hit Broadcast — I'll clone myself to fit.
🧑‍🏫 PROF. TORCHBroadcasting lets PyTorch add tensors of different shapes without a manual reshape — as long as the rule holds.

🎛️ Choose Shapes