2.82 Mantaflow not writing cache files (unicode characters in filepath) #74155

New Issue

Gustav Mårdestam · 2020-02-24T10:53:42+01:00

Gustav Mårdestam commented

2020-02-24 10:53:42 +01:00

System Information
Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: GeForce GTX 1080 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 442.19
CPU: Threadripper 1950X
RAM : 32GB

Blender Version
Broken: version: 2.82 (sub 7), branch: master, commit date: 2020-02-12 16:20, hash: 77d23b0bd7
Worked: (optional)

Short description of error
When baking a fluid sim (fluid or gas), no files are written to the cache directory. Folders like data and config are created but no actual cache files. Simulation works in "replay" mode.
Weird issue/ bug since it worked on my home pc but not on the work pc. No errors reported by blender.

Exact steps for others to reproduce the error

Scale cube up, Apply transform, Make fluid "domain".
Create sphere and make fluid "flow".
Set cache directory in domain.
Cache the sim.
Look inside the cache directory or try scrubbing the timeline.

**System Information** Operating system: Windows-10-10.0.18362-SP0 64 Bits Graphics card: GeForce GTX 1080 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 442.19 CPU: Threadripper 1950X RAM : 32GB **Blender Version** Broken: version: 2.82 (sub 7), branch: master, commit date: 2020-02-12 16:20, hash: `77d23b0bd7` Worked: (optional) **Short description of error** When baking a fluid sim (fluid or gas), no files are written to the cache directory. Folders like data and config are created but no actual cache files. Simulation works in "replay" mode. Weird issue/ bug since it worked on my home pc but not on the work pc. No errors reported by blender. **Exact steps for others to reproduce the error** 1. Scale cube up, Apply transform, Make fluid "domain". 2. Create sphere and make fluid "flow". 3. Set cache directory in domain. 4. Cache the sim. 5. Look inside the cache directory or try scrubbing the timeline.

Gustav Mårdestam commented

2020-02-24 10:53:42 +01:00

Added subscriber: @Carrotcakee

Richard Antalik commented

2020-02-24 19:58:51 +01:00

Added subscriber: @iss

Richard Antalik commented

2020-02-24 19:58:51 +01:00

Changed status from 'Needs Triage' to: 'Needs User Info'

Richard Antalik commented

2020-02-24 19:58:51 +01:00

Is it possible, that your work PC has some restrictions on users? Can you try run Blender as admin?

It is hard to debug this if you can not create 100% reproducible case

Is it possible, that your work PC has some restrictions on users? Can you try run Blender as admin? It is hard to debug this if you can not create 100% reproducible case

Philipp Oeser commented

2020-02-25 09:45:52 +01:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2020-02-25 09:45:52 +01:00

Does this happen in any folder location? (or does it work if you choose a cache directory somewhere else? e.g. subfolder of the current .blend file?)
And just to make sure: please share you example .blend file (this makes sure we are all looking at the same thing...)

Does this happen in any folder location? (or does it work if you choose a cache directory somewhere else? e.g. subfolder of the current .blend file?) And just to make sure: please share you example .blend file (this makes sure we are all looking at the same thing...)

Gustav Mårdestam commented

2020-02-25 13:11:05 +01:00

In #74155#879502, @iss wrote:
Is it possible, that your work PC has some restrictions on users? Can you try run Blender as admin?

It is hard to debug this if you can not create 100% reproducible case

I can't see how the PC would have any special restrictions as I personally installed windows from scratch. It is set up as an "organization pc" during setup though.
I have tried running it as admin and it makes no difference.

> In #74155#879502, @iss wrote: > Is it possible, that your work PC has some restrictions on users? Can you try run Blender as admin? > > It is hard to debug this if you can not create 100% reproducible case I can't see how the PC would have any special restrictions as I personally installed windows from scratch. It is set up as an "organization pc" during setup though. I have tried running it as admin and it makes no difference.

Gustav Mårdestam commented

2020-02-25 13:15:55 +01:00

In #74155#879863, @lichtwerk wrote:
Does this happen in any folder location? (or does it work if you choose a cache directory somewhere else? e.g. subfolder of the current .blend file?)
And just to make sure: please share you example .blend file (this makes sure we are all looking at the same thing...)

It works in the standard temp folder (AppData\Local\Temp\blender_a22300\cache_fluid) but if I change the directory to a folder on the desktop, documents, videos etc, it won't write any cache files anymore. I have tried setting the path as a relative path to the .blend file with no success. I have also tried rendering to the same folder and the render does output files to the folder.

Heres a simple example file as requested: Mantaflow_Cache_Debug_Example.blend

> In #74155#879863, @lichtwerk wrote: > Does this happen in any folder location? (or does it work if you choose a cache directory somewhere else? e.g. subfolder of the current .blend file?) > And just to make sure: please share you example .blend file (this makes sure we are all looking at the same thing...) It works in the standard temp folder (AppData\Local\Temp\blender_a22300\cache_fluid) but if I change the directory to a folder on the desktop, documents, videos etc, it won't write any cache files anymore. I have tried setting the path as a relative path to the .blend file with no success. I have also tried rendering to the same folder and the render does output files to the folder. Heres a simple example file as requested: [Mantaflow_Cache_Debug_Example.blend](https://archive.blender.org/developer/F8369245/Mantaflow_Cache_Debug_Example.blend)

Gustav Mårdestam commented

2020-02-25 13:29:06 +01:00

Update:
Tried the example file on a coworkers computer and everything works for him, the sim writes the cache files like it should.
I can get it to work by choosing our office NAS as the cache directory. So it works in %appdata% and on network drives but not in documents, videos, desktop etc.
Is there a better debug console that I can use to see what mantaflow is doing or trying to do while baking? Example like a "calculating x..... writing frame cache to directory x....." ?

Update: Tried the example file on a coworkers computer and everything works for him, the sim writes the cache files like it should. I can get it to work by choosing our office NAS as the cache directory. So it works in %appdata% and on network drives but not in documents, videos, desktop etc. Is there a better debug console that I can use to see what mantaflow is doing or trying to do while baking? Example like a "calculating x..... writing frame cache to directory x....." ?

Ankit Meel commented

2020-02-25 17:07:03 +01:00

Added subscriber: @ankitm

Ankit Meel commented

2020-02-25 17:07:03 +01:00

Do you have protected folders turned on ? https://www.tenforums.com/tutorials/87858-add-protected-folders-controlled-folder-access-windows-10-a.html

Gustav Mårdestam commented

2020-02-25 20:28:54 +01:00

In #74155#880084, @ankitm wrote:
Do you have protected folders turned on ? https://www.tenforums.com/tutorials/87858-add-protected-folders-controlled-folder-access-windows-10-a.html

No, it seems to be turned off:

> In #74155#880084, @ankitm wrote: > Do you have protected folders turned on ? https://www.tenforums.com/tutorials/87858-add-protected-folders-controlled-folder-access-windows-10-a.html No, it seems to be turned off: ![Annotation 2020-02-25 202750.png](https://archive.blender.org/developer/F8369946/Annotation_2020-02-25_202750.png)

Mansur Şamil Güngör commented

2020-02-26 00:23:46 +01:00

Added subscriber: @msamilg-3

Mansur Şamil Güngör commented

2020-02-26 00:23:46 +01:00

I'm having the exact same problem. Other simulation caches are writing fine on the disk, but not Mantaflow.

Gustav Mårdestam commented

2020-02-27 14:05:43 +01:00

In #74155#880378, @msamilg-3 wrote:
I'm having the exact same problem. Other simulation caches are writing fine on the disk, but not Mantaflow.

Hi, I have solved the issue and it came down to my C:\Users{username} having non-unicode characters (The Å in my last name). From the looks of your name here I would guess your Ş or ü might be your problem.
Updating my Windows username and replacing the Å with an A fixed the problem completely and Blender and Mantaflow are now writing out cache files to any directory I choose.
Updating the windows username path is not super easy but this guide made it less of a headache: https://winaero.com/blog/rename-user-profile-folder-windows-10/

DEVS: Maybe look into how Mantaflow handles non-unicode characters in file paths as Blender (Cycles/ Eevee) seems to handle it fine.

> In #74155#880378, @msamilg-3 wrote: > I'm having the exact same problem. Other simulation caches are writing fine on the disk, but not Mantaflow. Hi, I have solved the issue and it came down to my C:\Users\{username} having non-unicode characters (The Å in my last name). From the looks of your name here I would guess your Ş or ü might be your problem. Updating my Windows username and replacing the Å with an A fixed the problem completely and Blender and Mantaflow are now writing out cache files to any directory I choose. Updating the windows username path is not super easy but this guide made it less of a headache: https://winaero.com/blog/rename-user-profile-folder-windows-10/ DEVS: Maybe look into how Mantaflow handles non-unicode characters in file paths as Blender (Cycles/ Eevee) seems to handle it fine.

Philipp Oeser commented

2020-02-27 14:37:36 +01:00

Changed status from 'Needs User Info' to: 'Needs Developer To Reproduce'

Philipp Oeser commented

2020-02-27 14:37:36 +01:00

Added subscriber: @sebbas

Philipp Oeser commented

2020-02-27 14:37:36 +01:00

Just stumbled upon possibly related:

b0af44fa4d
#53159 (OpenVDB cache doesn't support unicode characters in filename)

@sebbas: Can you reproduce? Are you aware?

Just stumbled upon possibly related: - b0af44fa4d - #53159 (OpenVDB cache doesn't support unicode characters in filename) @sebbas: Can you reproduce? Are you aware?

Richard Antalik commented

2020-02-27 14:37:45 +01:00

This should be resolved in 2.83 by b0af44fa4d

This should be resolved in 2.83 by b0af44fa4d

Philipp Oeser changed title from ~~2.82 Mantaflow not writing cache files~~ to 2.82 Mantaflow not writing cache files (unicode characters in filepath)

2020-02-27 14:38:16 +01:00

Richard Antalik commented

2020-02-27 14:40:05 +01:00

Closed as duplicate of #50630

Richard Antalik closed this issue

2020-02-27 14:40:05 +01:00

Philipp Oeser commented

2020-02-27 15:15:21 +01:00

@iss: that commit is two years old (I just posted this as a reference)
Report is from a version two weeks old and on a 64bit windows... Are you sure this is fixed (or a duplicate)?

@iss: that commit is two years old (I just posted this as a reference) Report is from a version two weeks old and on a 64bit windows... Are you sure this is fixed (or a duplicate)?

Philipp Oeser commented

2020-02-27 15:16:29 +01:00

Changed status from 'Duplicate' to: 'Needs Developer To Reproduce'

Philipp Oeser reopened this issue

2020-02-27 15:16:29 +01:00

Richard Antalik commented

2020-02-27 15:31:24 +01:00

Sorry, I haven't checked. I was quite certain, that this issue was dealt with recently.

In any case I tested 2.82 with cache path //ščřž/ it didn't work.
2.83 did work.

Sorry, I haven't checked. I was quite certain, that this issue was dealt with recently. In any case I tested 2.82 with cache path `//ščřž/` it didn't work. 2.83 did work.

Philipp Oeser commented

2020-02-27 15:57:05 +01:00

Changed status from 'Needs Developer To Reproduce' to: 'Resolved'

Philipp Oeser closed this issue

2020-02-27 15:57:05 +01:00

Philipp Oeser self-assigned this 2020-02-27 15:57:05 +01:00

Philipp Oeser commented

2020-02-27 15:57:05 +01:00

@iss, thx for getting back.
Looks like this was indeed fixed, see #73770 (Mantaflow is unable to bake fluid simulations on non-ASCII file paths), 4453509d83, b8af5e1062.

Sorry for the noise.

@Carrotcakee: please try a fresh build from https://builder.blender.org/download/ (these have the fixes included).
Will close as resolved then, feel free to comment again if issues persist...

@iss, thx for getting back. Looks like this was indeed fixed, see #73770 (Mantaflow is unable to bake fluid simulations on non-ASCII file paths), 4453509d83, b8af5e1062. Sorry for the noise. @Carrotcakee: please try a fresh build from https://builder.blender.org/download/ (these have the fixes included). Will close as resolved then, feel free to comment again if issues persist...

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2.82 Mantaflow not writing cache files (unicode characters in filepath) #74155