Memory leak when exporting OpenEXR monochrome animation #51187

New Issue

Dave Sharp · 2017-04-12T15:45:36+02:00

Dave Sharp commented

2017-04-12 15:45:36 +02:00

System Information
Windows 7 64, Quadro K2000M

Blender Version
Broken: 2.78 hash 31bdb31 (also 2.78b)
Worked: (optional)

Short description of error
Memory leak when exporting OpenEXR monochrome animation

Exact steps for others to reproduce the error
memleaktest.zip
See attached zip file, containing a simple .blend file and an empty "frames" directory (just a place to save the frames for convenience). At the command line render this .blend file animation, and observe the "Mem" value grow with each frame rendered. This issue can be recreated by creating a new file with factory settings, setting the output to OpenEXR monochrome ("BW"), and rendering the animation from the command line. Switching from BW to RGB or RGBA makes the memory leak go away, and switching to another output format (e.g. PNG) makes it go away as well.

Quick testing in the GUI (as opposed to rendering in the background at the command line) does not make this obvious, although I was rendering in the GUI when I discovered this problem (my days-long render of tens of thousands of simple frames died after just a few hours). On my larger file this fills up all my RAM (64 GB) on my other machine within about 2 hours before dying, requiring me to restart the batch rendering.

Following are the first and last excerpts from rendering out this file at the command line to demonstrate the memory usage growing:

Fra:1 Mem:7.67M (0.00M, Peak 7.67M) | Time:00:00.00 | Preparing Scene data
Fra:1 Mem:7.67M (0.00M, Peak 7.67M) | Time:00:00.00 | Preparing Scene data
Fra:1 Mem:7.67M (0.00M, Peak 7.67M) | Time:00:00.00 | Creating Shadowbuffers
Fra:1 Mem:7.67M (0.00M, Peak 7.67M) | Time:00:00.00 | Raytree.. preparing
Fra:1 Mem:7.67M (0.00M, Peak 7.67M) | Time:00:00.00 | Raytree finished
Fra:1 Mem:7.67M (0.00M, Peak 7.67M) | Time:00:00.00 | Creating Environment maps
Fra:1 Mem:7.67M (0.00M, Peak 7.67M) | Time:00:00.00 | Caching Point Densities
Fra:1 Mem:7.67M (0.00M, Peak 7.67M) | Time:00:00.00 | Sce: Scene Ve:0 Fa:0 La:1
Fra:1 Mem:7.67M (0.00M, Peak 7.67M) | Time:00:00.00 | Loading voxel datasets
Fra:1 Mem:7.67M (0.00M, Peak 7.67M) | Time:00:00.01 | Sce: Scene Ve:0 Fa:0 La:1
Fra:1 Mem:7.68M (0.00M, Peak 7.68M) | Time:00:00.01 | Sce: Scene Ve:0 Fa:0 La:1
Fra:1 Mem:7.68M (0.00M, Peak 7.68M) | Time:00:00.01 | Volume preprocessing
Fra:1 Mem:7.68M (0.00M, Peak 7.68M) | Time:00:00.01 | Sce: Scene Ve:0 Fa:0 La:1
Fra:1 Mem:7.68M (0.00M, Peak 7.68M) | Time:00:00.01 | Sce: Scene Ve:0 Fa:0 La:1
Fra:1 Mem:8.91M (0.00M, Peak 12.49M) | Time:00:00.03 | Scene, Part 1-1
Fra:1 Mem:7.66M (0.00M, Peak 12.49M) | Time:00:00.03 | Sce: Scene Ve:0 Fa:0 La:1
Saved: 'C:\tmp\0001.exr'

Fra:250 Mem:67.06M (0.00M, Peak 71.64M) | Time:00:00.00 | Preparing Scene data
Fra:250 Mem:67.06M (0.00M, Peak 71.64M) | Time:00:00.00 | Creating Shadowbuffers
Fra:250 Mem:67.06M (0.00M, Peak 71.64M) | Time:00:00.00 | Raytree.. preparing
Fra:250 Mem:67.06M (0.00M, Peak 71.64M) | Time:00:00.00 | Raytree finished
Fra:250 Mem:67.06M (0.00M, Peak 71.64M) | Time:00:00.00 | Creating Environment maps
Fra:250 Mem:67.06M (0.00M, Peak 71.64M) | Time:00:00.00 | Caching Point Densities
Fra:250 Mem:67.06M (0.00M, Peak 71.64M) | Time:00:00.00 | Sce: Scene Ve:0 Fa:0 La:1
Fra:250 Mem:67.06M (0.00M, Peak 71.64M) | Time:00:00.00 | Loading voxel datasets
Fra:250 Mem:67.06M (0.00M, Peak 71.64M) | Time:00:00.01 | Sce: Scene Ve:0 Fa:0 La:1
Fra:250 Mem:67.06M (0.00M, Peak 71.64M) | Time:00:00.01 | Sce: Scene Ve:0 Fa:0 La:1
Fra:250 Mem:67.06M (0.00M, Peak 71.64M) | Time:00:00.01 | Volume preprocessing
Fra:250 Mem:67.06M (0.00M, Peak 71.64M) | Time:00:00.01 | Sce: Scene Ve:0 Fa:0 La:1
Fra:250 Mem:67.06M (0.00M, Peak 71.64M) | Time:00:00.01 | Sce: Scene Ve:0 Fa:0 La:1
Fra:250 Mem:68.30M (0.00M, Peak 71.87M) | Time:00:00.03 | Scene, Part 1-1
Fra:250 Mem:67.04M (0.00M, Peak 71.87M) | Time:00:00.03 | Sce: Scene Ve:0 Fa:0 La:1
Saved: 'C:\tmp\0250.exr'

**System Information** Windows 7 64, Quadro K2000M **Blender Version** Broken: 2.78 hash 31bdb31 (also 2.78b) Worked: (optional) **Short description of error** Memory leak when exporting OpenEXR monochrome animation **Exact steps for others to reproduce the error** [memleaktest.zip](https://archive.blender.org/developer/F543511/memleaktest.zip) See attached zip file, containing a simple .blend file and an empty "frames" directory (just a place to save the frames for convenience). At the command line render this .blend file animation, and observe the "Mem" value grow with each frame rendered. This issue can be recreated by creating a new file with factory settings, setting the output to OpenEXR monochrome ("BW"), and rendering the animation from the command line. Switching from BW to RGB or RGBA makes the memory leak go away, and switching to another output format (e.g. PNG) makes it go away as well. Quick testing in the GUI (as opposed to rendering in the background at the command line) does not make this obvious, although I was rendering in the GUI when I discovered this problem (my days-long render of tens of thousands of simple frames died after just a few hours). On my larger file this fills up all my RAM (64 GB) on my other machine within about 2 hours before dying, requiring me to restart the batch rendering. Following are the first and last excerpts from rendering out this file at the command line to demonstrate the memory usage growing: ``` Fra:1 Mem:7.67M (0.00M, Peak 7.67M) | Time:00:00.00 | Preparing Scene data Fra:1 Mem:7.67M (0.00M, Peak 7.67M) | Time:00:00.00 | Preparing Scene data Fra:1 Mem:7.67M (0.00M, Peak 7.67M) | Time:00:00.00 | Creating Shadowbuffers Fra:1 Mem:7.67M (0.00M, Peak 7.67M) | Time:00:00.00 | Raytree.. preparing Fra:1 Mem:7.67M (0.00M, Peak 7.67M) | Time:00:00.00 | Raytree finished Fra:1 Mem:7.67M (0.00M, Peak 7.67M) | Time:00:00.00 | Creating Environment maps Fra:1 Mem:7.67M (0.00M, Peak 7.67M) | Time:00:00.00 | Caching Point Densities Fra:1 Mem:7.67M (0.00M, Peak 7.67M) | Time:00:00.00 | Sce: Scene Ve:0 Fa:0 La:1 Fra:1 Mem:7.67M (0.00M, Peak 7.67M) | Time:00:00.00 | Loading voxel datasets Fra:1 Mem:7.67M (0.00M, Peak 7.67M) | Time:00:00.01 | Sce: Scene Ve:0 Fa:0 La:1 Fra:1 Mem:7.68M (0.00M, Peak 7.68M) | Time:00:00.01 | Sce: Scene Ve:0 Fa:0 La:1 Fra:1 Mem:7.68M (0.00M, Peak 7.68M) | Time:00:00.01 | Volume preprocessing Fra:1 Mem:7.68M (0.00M, Peak 7.68M) | Time:00:00.01 | Sce: Scene Ve:0 Fa:0 La:1 Fra:1 Mem:7.68M (0.00M, Peak 7.68M) | Time:00:00.01 | Sce: Scene Ve:0 Fa:0 La:1 Fra:1 Mem:8.91M (0.00M, Peak 12.49M) | Time:00:00.03 | Scene, Part 1-1 Fra:1 Mem:7.66M (0.00M, Peak 12.49M) | Time:00:00.03 | Sce: Scene Ve:0 Fa:0 La:1 Saved: 'C:\tmp\0001.exr' ``` ``` Fra:250 Mem:67.06M (0.00M, Peak 71.64M) | Time:00:00.00 | Preparing Scene data Fra:250 Mem:67.06M (0.00M, Peak 71.64M) | Time:00:00.00 | Creating Shadowbuffers Fra:250 Mem:67.06M (0.00M, Peak 71.64M) | Time:00:00.00 | Raytree.. preparing Fra:250 Mem:67.06M (0.00M, Peak 71.64M) | Time:00:00.00 | Raytree finished Fra:250 Mem:67.06M (0.00M, Peak 71.64M) | Time:00:00.00 | Creating Environment maps Fra:250 Mem:67.06M (0.00M, Peak 71.64M) | Time:00:00.00 | Caching Point Densities Fra:250 Mem:67.06M (0.00M, Peak 71.64M) | Time:00:00.00 | Sce: Scene Ve:0 Fa:0 La:1 Fra:250 Mem:67.06M (0.00M, Peak 71.64M) | Time:00:00.00 | Loading voxel datasets Fra:250 Mem:67.06M (0.00M, Peak 71.64M) | Time:00:00.01 | Sce: Scene Ve:0 Fa:0 La:1 Fra:250 Mem:67.06M (0.00M, Peak 71.64M) | Time:00:00.01 | Sce: Scene Ve:0 Fa:0 La:1 Fra:250 Mem:67.06M (0.00M, Peak 71.64M) | Time:00:00.01 | Volume preprocessing Fra:250 Mem:67.06M (0.00M, Peak 71.64M) | Time:00:00.01 | Sce: Scene Ve:0 Fa:0 La:1 Fra:250 Mem:67.06M (0.00M, Peak 71.64M) | Time:00:00.01 | Sce: Scene Ve:0 Fa:0 La:1 Fra:250 Mem:68.30M (0.00M, Peak 71.87M) | Time:00:00.03 | Scene, Part 1-1 Fra:250 Mem:67.04M (0.00M, Peak 71.87M) | Time:00:00.03 | Sce: Scene Ve:0 Fa:0 La:1 Saved: 'C:\tmp\0250.exr' ```

Dave Sharp commented

2017-04-12 15:45:36 +02:00

Changed status to: 'Open'

Dave Sharp commented

2017-04-12 15:45:36 +02:00

Added subscriber: @dgsharp

Sergey Sharybin was assigned by Aaron Carlisle

2017-04-13 22:25:26 +02:00

blender-admin commented

2017-04-18 14:27:52 +02:00

This issue was referenced by 2836003f6b

This issue was referenced by 2836003f6bd26e8d1e9dfd9ffb1d844384bebbd2

Sergey Sharybin commented

2017-04-18 14:28:21 +02:00

Changed status from 'Open' to: 'Resolved'

Sergey Sharybin closed this issue

2017-04-18 14:28:21 +02:00

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Memory leak when exporting OpenEXR monochrome animation #51187