Error when trying to render image with Cycles using GPU. #43126

New Issue

Dylan · 2015-01-04T20:34:36+01:00

Dylan commented

2015-01-04 20:34:36 +01:00

System Information
Operating system and graphics card
Windows 8.1.
ASUS - NVIDIA Geforce GTX 970. Driver Version: 347.09.

Blender Version
Broken: 2.73RC
I have not tried any other versions of Blender.

Short description of error
When I render my scene using the GPU I get the following message:
CUDA error: Launch exceeded timeout in cuMemcpyDtoH((uchar*)mem.data_pointer + offset, (CUdeviceptr)(mem.device_pointer + offset), size).

Exact steps for others to reproduce the error
Error occurs when I try to render my scene using the GPU.

The attached file is setup to be rendered.

This has error has occurred in several of my projects including basic scenes that feature 1 character with no other objects present outside of lights and a ground plane.
I have used smaller tile sizes however this does not correct the issue. Blender_GPU_Error.zip

**System Information** Operating system and graphics card Windows 8.1. ASUS - NVIDIA Geforce GTX 970. Driver Version: 347.09. **Blender Version** Broken: 2.73RC I have not tried any other versions of Blender. **Short description of error** When I render my scene using the GPU I get the following message: CUDA error: Launch exceeded timeout in cuMemcpyDtoH((uchar*)mem.data_pointer + offset, (CUdeviceptr)(mem.device_pointer + offset), size). **Exact steps for others to reproduce the error** Error occurs when I try to render my scene using the GPU. The attached file is setup to be rendered. This has error has occurred in several of my projects including basic scenes that feature 1 character with no other objects present outside of lights and a ground plane. I have used smaller tile sizes however this does not correct the issue. [Blender_GPU_Error.zip](https://archive.blender.org/developer/F135142/Blender_GPU_Error.zip)

Dylan commented

2015-01-04 20:34:36 +01:00

Changed status to: 'Open'

Dylan commented

2015-01-04 20:34:36 +01:00

Added subscriber: @Dylan12-3

Sergey Sharybin commented

2015-01-05 09:17:51 +01:00

Added subscriber: @Sergey

Sergey Sharybin commented

2015-01-05 09:17:51 +01:00

I can not see the crash with the file you've provided. Presumably because it doesn't have any textures. Make sure they're all packed and provide updated file.

Also, there're some really similar reports (i.e. #43118) so instead of reporting same issue several times worth redirecting all the feedback in a single report.

I can not see the crash with the file you've provided. Presumably because it doesn't have any textures. Make sure they're all packed and provide updated file. Also, there're some really similar reports (i.e. #43118) so instead of reporting same issue several times worth redirecting all the feedback in a single report.

Dylan commented

2015-01-06 03:03:11 +01:00

Hi Sergey,

Thanks for your assistance.

If other users are having similar issues then there's no point in continuing with this thread.
Based on the other posts the issue seems to be driver related. Is there a recommended solution to this problem?

If this is a driver issue, are there any plans to update Blender to accommodate the driver (for instance in the next update of the software)?

Hi Sergey, Thanks for your assistance. If other users are having similar issues then there's no point in continuing with this thread. Based on the other posts the issue seems to be driver related. Is there a recommended solution to this problem? If this is a driver issue, are there any plans to update Blender to accommodate the driver (for instance in the next update of the software)?

Sergey Sharybin commented

2015-01-06 09:14:51 +01:00

That totally depends on what limitations the scene is running into. it's usually just impossible to avoid limitations set by the drivers.

I'm not sure what exactly the issue in your case without having a look into file which gives issues for you.

Also, did you try installing previous version of driver and see if it works?

That totally depends on what limitations the scene is running into. it's usually just impossible to avoid limitations set by the drivers. I'm not sure what exactly the issue in your case without having a look into file which gives issues for you. Also, did you try installing previous version of driver and see if it works?

Dylan commented

2015-01-07 04:01:22 +01:00

I tried one of the previous drivers however it didn't fix the issue.

I'll upload the file with the textures again in the morning.

Thanks.

I tried one of the previous drivers however it didn't fix the issue. I'll upload the file with the textures again in the morning. Thanks.

Dylan commented

2015-01-07 18:49:57 +01:00

I had some difficulties with uploading the file so I've uploaded a different file that has a similar issue.
http://www.pasteall.org/blend/33705

Assuming that I did everything correctly it should have all of the textures saved.

Please let me know if you need anything else.

I had some difficulties with uploading the file so I've uploaded a different file that has a similar issue. http://www.pasteall.org/blend/33705 Assuming that I did everything correctly it should have all of the textures saved. Please let me know if you need anything else.

Dylan commented

2015-01-10 17:32:42 +01:00

Hi Sergey,

Could you look at the file that I uploaded to try to identify what the problem is?

I really appreciate the assistance.

Thanks.

Hi Sergey, Could you look at the file that I uploaded to try to identify what the problem is? I really appreciate the assistance. Thanks.

Julian Eisel commented

2015-01-12 20:47:59 +01:00

Added subscriber: @JulianEisel

Julian Eisel commented

2015-01-12 20:47:59 +01:00

Not able to reproduce this here on Windows 7 using a GTX570

Dylan commented

2015-01-13 01:28:53 +01:00

Is it possible that this could be related to the graphics card that I'm using? Other people have reported similar issues using that specific card as well as Windows 8.1.

I also should note that the error doesn't happen until it hits the 7th rendering tile.

Were you able to render the entire character?

Is it possible that this could be related to the graphics card that I'm using? Other people have reported similar issues using that specific card as well as Windows 8.1. I also should note that the error doesn't happen until it hits the 7th rendering tile. Were you able to render the entire character?

Sergey Sharybin commented

2015-01-13 09:01:48 +01:00

Changed status from 'Open' to: 'Archived'

Sergey Sharybin closed this issue

2015-01-13 09:01:48 +01:00

Sergey Sharybin self-assigned this 2015-01-13 09:01:48 +01:00

Sergey Sharybin commented

2015-01-13 09:01:48 +01:00

Now i can reproduce the issue now and it is caused by limitation of GPU which is both used for display and compute. Basically video driver sets a time limit for kernel execution on GPU which are used for display. This means if tile computation is complex enough you'll run out of time rather quick.

Workaround could be to try making tile size smaller, but it'll have speed regression and will run out of tim eventually as scene becomes more complex. The only real solution is to use dedicated card for compute and less beafier one or display.

This time limit is dictated by the driver and blender can not do anything about this. SO thanks for the report, it's just how inperfect GPU compute world is..

Now i can reproduce the issue now and it is caused by limitation of GPU which is both used for display and compute. Basically video driver sets a time limit for kernel execution on GPU which are used for display. This means if tile computation is complex enough you'll run out of time rather quick. Workaround could be to try making tile size smaller, but it'll have speed regression and will run out of tim eventually as scene becomes more complex. The only real solution is to use dedicated card for compute and less beafier one or display. This time limit is dictated by the driver and blender can not do anything about this. SO thanks for the report, it's just how inperfect GPU compute world is..

Dylan commented

2015-01-14 01:06:24 +01:00

Thanks Sergey.

My only question then is what would the difference be between Julian's GTX570 and my 970?

As far as I know the GTX970 should be able to handle the same workload as the GTX570.

Thanks Sergey. My only question then is what would the difference be between Julian's GTX570 and my 970? As far as I know the GTX970 should be able to handle the same workload as the GTX570.

Julian Eisel commented

2015-01-14 01:23:19 +01:00

I didn't even try to render till the 7th tile, as I assumed the crash would happen as soon as you start rendering. I can do that tomorrow if I don't forget to do so.

Sergey Sharybin commented

2015-01-14 08:50:23 +01:00

@Dylan12-3, it's not only about card, it's also about driver and operation system. Plus some difference in hardware clocks might have affect in here.

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Error when trying to render image with Cycles using GPU. #43126