• January 19, 2021, 10:53:03 PM

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Author Topic: (Solved) Mandelbulber 2.24 - Random OpenCL Error  (Read 111 times)

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Offline Voulxe

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(Solved) Mandelbulber 2.24 - Random OpenCL Error
« on: January 08, 2021, 09:06:54 PM »
When rendering scenes with the Monte Carlo Simulation, the calculation aborts every now and then with the message "Cannot finish reading OpenCL output buffers
Calculation probably took too long and triggered timeout error in graphics driver."


On the same scene it aborted once after 56 minutes, then after 6h. The same scene rendered fine with double resolution for 16h before I aborted it myself.
I already changed the OpenCl settings in the one or the other direction - with no effect.

Is it possible to reduce the render bucket size, to avoid a timeout?

Logfile Output:
Code: [Select]
PID: 9576, time: 24560.108, Critical: OpenCl ERROR:  "CommandQueue::finish() - read buffers"  ( -36 ) (c:\projects\mandelbulber2\mandelbulber2\src\opencl_engine.cpp:86, bool __cdecl cOpenClEngine::checkErr(int,class QString)
PID: 9576, time: 24560.121, Error: Cannot finish reading OpenCL output buffers
Calculation probably took too long and triggered timeout error in graphics driver.


Linkback: https://fractalforums.org/mandelbulber/14/mandelbulber-2-24-random-opencl-error/3973/
« Last Edit: January 10, 2021, 09:53:02 PM by Voulxe »

Offline buddhi

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Re: Mandelbulber 2.24 - Random OpenCL Error
« Reply #1 on: January 08, 2021, 09:27:41 PM »
Have you edited Windows registry to disable NVidia driver timeouts?
In the user manual (help menu of the program) on page 7 there is described how to do it.

Offline Voulxe

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Re: Mandelbulber 2.24 - Random OpenCL Error
« Reply #2 on: January 09, 2021, 09:35:24 AM »
I'll go for it and will start test render coming evening.

Thanks for the quick reply :-)

Edit (24h later): Works :-D
« Last Edit: January 10, 2021, 09:53:47 PM by Voulxe, Reason: Problem solved »


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