Mantaflow simulation stops and crashes at the end of the bake (or when closing blender): The CG solver diverged, residual norm > 1e30, stopping. #87975

New Issue

Anthony Kitchin · 2021-05-01T23:53:36+02:00

Anthony Kitchin commented

2021-05-01 23:53:36 +02:00

Blender Version
Broken: version: 3.0.0 Alpha, branch: master, commit date: 2021-05-01 16:15, hash: ecc7a83798
Worked: -

Short description of error
Crash baking fluid simulation.

Exact steps for others to reproduce the error

Open the file and bake all its frames (or only frame 181 to 183).

beach.blend

Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "<string>", line 169, in bake_fluid_data_5
  File "<string>", line 164, in bake_fluid_process_data_5
  File "<string>", line 136, in liquid_adaptive_step_5
  File "<string>", line 221, in liquid_step_5
RuntimeError: GridCg::iterate: The CG solver diverged, residual norm > 1e30, stopping.
Error raised in extern/mantaflow/preprocessed/conjugategrad.cpp:562
(...)
terminate called after throwing an instance of 'Manta::Error'
  what():  can't clean grid cache, some grids are still in use
Error raised in extern/mantaflow/preprocessed/fluidsolver.cpp:33
Aborted (core dumped)

Complete output: P2568

**Blender Version** Broken: version: 3.0.0 Alpha, branch: master, commit date: 2021-05-01 16:15, hash: `ecc7a83798` Worked: - **Short description of error** Crash baking fluid simulation. **Exact steps for others to reproduce the error** Open the file and bake all its frames (or only frame 181 to 183). [beach.blend](https://archive.blender.org/developer/F10049235/beach.blend) ``` Traceback (most recent call last): File "<string>", line 1, in <module> File "<string>", line 169, in bake_fluid_data_5 File "<string>", line 164, in bake_fluid_process_data_5 File "<string>", line 136, in liquid_adaptive_step_5 File "<string>", line 221, in liquid_step_5 RuntimeError: GridCg::iterate: The CG solver diverged, residual norm > 1e30, stopping. Error raised in extern/mantaflow/preprocessed/conjugategrad.cpp:562 (...) terminate called after throwing an instance of 'Manta::Error' what(): can't clean grid cache, some grids are still in use Error raised in extern/mantaflow/preprocessed/fluidsolver.cpp:33 Aborted (core dumped) ``` Complete output: [P2568](https://archive.blender.org/developer/P2568.txt)

Anthony Kitchin commented

2021-05-01 23:53:36 +02:00

Added subscriber: @anthony.kitchin

blender-admin commented

2021-05-01 23:53:36 +02:00

#104215 was marked as duplicate of this issue

blender-admin commented

2021-05-01 23:53:36 +02:00

#96111 was marked as duplicate of this issue

blender-admin commented

2021-05-01 23:53:36 +02:00

#93583 was marked as duplicate of this issue

blender-admin commented

2021-05-01 23:53:36 +02:00

#89723 was marked as duplicate of this issue

blender-admin commented

2021-05-01 23:53:36 +02:00

#87021 was marked as duplicate of this issue

Anthony Kitchin commented

2021-05-01 23:55:11 +02:00

system-info.txt

beach.blend

[system-info.txt](https://archive.blender.org/developer/F10049234/system-info.txt) [beach.blend](https://archive.blender.org/developer/F10049235/beach.blend)

Philipp Oeser commented

2021-05-03 18:02:27 +02:00

Added subscribers: @erikeah, @lichtwerk

Philipp Oeser commented

2021-06-24 14:38:53 +02:00

Changed status from 'Needs Triage' to: 'Confirmed'

Philipp Oeser commented

2021-06-24 14:38:53 +02:00

Added subscriber: @sebbas

Philipp Oeser commented

2021-06-24 14:38:53 +02:00

Sorry this has been lying around.

I can confirm, error occurs at the very end of the bake.

CC @sebbas

Sorry this has been lying around. I can confirm, error occurs at the very end of the bake. CC @sebbas

Philipp Oeser changed title from ~~The CG solver diverged, residual norm > 1e30, stopping.~~ to Mantaflow crash at the end of the bake: The CG solver diverged, residual norm > 1e30, stopping.

2021-06-24 14:39:25 +02:00

Philipp Oeser changed title from ~~Mantaflow crash at the end of the bake: The CG solver diverged, residual norm > 1e30, stopping.~~ to Mantaflow simulation stops and crashes at the end of the bake (or when closing blender): The CG solver diverged, residual norm > 1e30, stopping.

2021-09-15 10:30:15 +02:00

Philipp Oeser commented

2021-09-15 10:30:52 +02:00

Added subscribers: @itamar-erez, @PratikPB2123, @iss

Philipp Oeser commented

2021-09-15 10:32:29 +02:00

Since this has been reported often, will set to High prio.

Sebastián Barschkis commented

2021-11-07 22:18:57 +01:00

There are 2 things that triggered the crash:

Normals of beach obstacle are pointing inwards.
Beach and pusher create airpockets in the domain.

@anthony.kitchin If you modify your setup to look something like this, you should not get a crash (i.e. flip normals of beach object, pull bottom faces of beach and pusher downwards).

Now, there are already sanity checks that should catch invalid domain setups like this one. Here they fell through. Will investigate why, so keeping report open for now.

There are 2 things that triggered the crash: 1. Normals of beach obstacle are pointing inwards. 2. Beach and pusher create airpockets in the domain. @anthony.kitchin If you modify your setup to look something like this, you should not get a crash (i.e. flip normals of beach object, pull bottom faces of beach and pusher downwards). ![#87975.png](https://archive.blender.org/developer/F11761605/T87975.png) Now, there are already sanity checks that should catch invalid domain setups like this one. Here they fell through. Will investigate why, so keeping report open for now.

Dalai Felinto commented

2021-12-23 14:58:39 +01:00

Added subscriber: @dfelinto

Dalai Felinto commented

2021-12-24 13:03:28 +01:00

At the moment there is no one actively maintaining Mantaflow (and its integration with Blender). I'm moving this to Known Issue.

Richard Antalik commented

2022-02-18 15:06:17 +01:00

Added subscriber: @BEHE

Richard Antalik commented

2022-03-02 02:06:55 +01:00

Added subscriber: @frispete

Iago Mota commented

2022-03-04 08:56:05 +01:00

Added subscriber: @Iago-Diogo-de-Vasconcelos-Mota

Sahil Shahzad commented

2022-10-22 17:28:03 +02:00

Added subscriber: @SahilShahzad

Sahil Shahzad commented

2022-10-22 17:28:03 +02:00

Got the same error again, Blender 3.3, Temp fix for those looking: set cache type to Modular, and then bake separately, worked for me. memory issues? but ram usage was at 50% only on mine.

Pratik Borhade commented

2023-01-30 10:39:55 +01:00

Added subscribers: @Ivan-2, @rlguy

Philipp Oeser removed the

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Mantaflow simulation stops and crashes at the end of the bake (or when closing blender): The CG solver diverged, residual norm > 1e30, stopping. #87975