OpenCL application blocked from accessing graphics hardware

Hi,

I've been writing some OpenCL applications for my research project. These applications contain kernels which can run for a long time (~15 seconds). I am running into issues when running these kernels on my intel HD 5500 on Windows 8.1.

I've modified the TdrDelay registry value to try to avoid the system from killing the kernels for running for too long. I've set it to 30 seconds as of now.

Now, I am able to successfully run my kernels about 1/10 of the time. The rest of the times I get an error:

"Application has been blocked from accessing Graphics hardware"

This error seems to occur within 2 seconds of launching the kernel.

My driver version is: 10.18.14.4029

When the application runs to completion, the results are very promising so I'm really hoping to get this working more reliably.

Thanks a lot!