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Joseph_A_2
Beginner
71 Views

Enqueing many kernels leads to a hang on HD 4600

The reproducer is attached.

In it, I am enqueuing 1000 instances of the same kernel, each subsequent instance being made dependent on the previous one. Then I just wait for the event associated with the last kernel enqueued. The kernel just zeroes out a buffer. This issue doesn't reproduce on a no-op kernel.

Expected result: application finishes successfully.

Actual result: application hangs.

I get the expected result on Intel CPU and NVidia GPU devices, but a hang on Intel HD 4600 GPU.

I am running Windows 8.1 with the latest 10.18.14.4264 Intel graphics driver.

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1 Reply
Robert_I_Intel
Employee
71 Views

Hi Joseph,

I am able to reproduce the issue on my end. I will file a bug. Thanks for reporting this issue!

Robert