Process Hangs During Population Step

Describe the bug

The process stalled for 5 hours at the following log line and produced no further output: [09:52:24.607] [populate] [INFO] | Populating 104/222 placeholder.name='NatureShelfTrinketsFactory(2331279).spawn_placeholder(6215923)'

Steps to Reproduce

What version of the code were you using?

commit 892947be71c4ff102c6a558d088ffe149561c11f Date: Thu Jan 29 09:39:11 2026 -0500

What command did you run?

python -m infinigen_examples.generate_indoors --seed 10 --task coarse --output_folder outputs/indoors/coarse/e10 -g custom.gin 2>&1 | tee e10.log

gin file:

# Camera
compose_indoors.pose_cameras_enabled = False
compose_indoors.animate_cameras_enabled = False
compose_indoors.overhead_cam_enabled = True 

# Scene Advanced
compose_indoors.terrain_enabled = False
compose_indoors.nature_backdrop_enabled = False

# Scene necessary
compose_indoors.lights_off_chance = 0.0
# b add
populate_doors.all_open = True

# Performance Advanced
compose_indoors.skirting_floor_chance = 0.0
compose_indoors.skirting_ceiling_chance = 0.0

home_room_constraints.has_fewer_rooms = True
solve_objects.addition_weight_scalar = 3.0
compose_indoors.solve_steps_large = 120  # b/100/300 c/300/120
compose_indoors.solve_steps_medium = 80 # b/60/100   c/100/80
compose_indoors.solve_steps_small = 12   # b/10/20   c/20/12

# d add
RoomConstants.n_stories = 1  # e/2/1

What are your FULL output logs?

e10.log The process froze at:

[09:50:53.601] [populate] [INFO] | Populating 100/222 placeholder.name='BookStackFactory(9311420).spawn_placeholder(5823401)' [09:51:02.222] [populate] [INFO] | Populating 101/222 placeholder.name='NatureShelfTrinketsFactory(9991744).spawn_placeholder(1175673)' [09:51:04.632] [populate] [INFO] | Populating 102/222 placeholder.name='NatureShelfTrinketsFactory(6833187).spawn_placeholder(5196614)' [09:51:15.382] [populate] [INFO] | Populating 103/222 placeholder.name='NatureShelfTrinketsFactory(6359108).spawn_placeholder(3732833)' Info: Removed 0 vertices [09:51:58.713] [compatibility] [WARNING] | Subsurface Color no longer in use for ShaderNodeBsdfPrincipled Info: Removed 45677 vertices [09:52:24.607] [populate] [INFO] | Populating 104/222 placeholder.name='NatureShelfTrinketsFactory(2331279).spawn_placeholder(6215923)'

No further output was produced from 09:52 until 14:36, so I manually terminated the process.

If this is your first time running Infinigen? No.**

Platform

• OS & OS Version: Ubuntu 20.04.06
• GPU (?) : N/A
• GPU Driver Version (?) : N/A
• RAM (GB): 240GB
• CPU : 64 vCPU AMD EPYC 9654 96-Core Processor

Additional context

This issue has been encountered multiple times and does not appear to be an isolated incident. Same problem when using gin

# Camera
compose_indoors.pose_cameras_enabled = False
compose_indoors.animate_cameras_enabled = False
compose_indoors.overhead_cam_enabled = True 

# Scene Advanced
compose_indoors.terrain_enabled = False
compose_indoors.nature_backdrop_enabled = False

# Scene necessary
compose_indoors.lights_off_chance = 0.0
# b add
populate_doors.all_open = True

# Performance Advanced
compose_indoors.skirting_floor_chance = 0.0
compose_indoors.skirting_ceiling_chance = 0.0

home_room_constraints.has_fewer_rooms = True
solve_objects.addition_weight_scalar = 3.0
compose_indoors.solve_steps_large = 300  # b/100/300
compose_indoors.solve_steps_medium = 100 # b/60/100
compose_indoors.solve_steps_small = 20   # b/10/20

log : b8.log

command: python -m infinigen_examples.generate_indoors --seed 8 --task coarse --output_folder outputs/indoors/coarse/b8 -g custom.gin 2>&1 | tee b8.log