Houdini Wedging: Split Big Sims Into Smaller, Manageable Ones

One giant pyro container means one giant bounding box, and even a low-res sim starts to chug. In this video I break a single cohesive pyro shot into separate simulations using TOPs/PDG wedges, so each piece cooks fast, caches small, and iterates on its own. Built for artists working on one machine without a render farm. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ What you'll learn: → How to break up your simulation to easily manage large geometry or voxel counts → Driving your wedge count procedurally → Isolating each emitter per wedge → Wedged cache paths, ROP Fetch, and checking every wedge with File Merge → Scheduler safety: Single work item, minimum memory, and delay gates → Custom wedge attributes to give each sim its own look ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ CHAPTERS 00:00 Introduction and Overview 01:05 Scatter setup 01:45 Building the emitters 04:26 Isolate-by-Wedge Blast 05:40 Pyro sourcing 07:45 Why wedge? 10:10 TOP network: wedge count & isolating each wedge 11:49 Wedged cache paths + ROP Fetch 14:59 Checking wedges with the File Merge 19:03 Custom wedge attributes, wind variation & wrap-up Mentioned in this video: → Houdini Pyro Fireball in 10 Minutes:    • Houdini Pyro in Under 10 Minutes — Firebal...   → Labs File Cache Wedging | Node by Node:    • Stop Recooking Your Sims — Use the Labs Fi...   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 📬 The Briefing, my free weekly newsletter for VFX artists. The full workshop this setup is part of lands there first: https://bryanholt.media/briefing 🛒 .hip files and HDAs: bryanholt.media/store 💬 Join the Discord: discord.gg/Z6SHfbeMdR ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ #Houdini #HoudiniFX #VFX