topic Re:Vulkan: vkGetQueryPoolResults occasionally returns VK_NOT_READY even though VK_QUERY_RESULT_WAIT_BIT in Graphics

Vulkan: vkGetQueryPoolResults occasionally returns VK_NOT_READY even though VK_QUERY_RESULT_WAIT_BIT

ashleyr — Thu, 18 Nov 2021 21:22:15 GMT

* is set.

Hi, I tried to file a bug report in the Graphics Command Center but I got 'AN UNKNOWN EXCEPTION HAS OCCURRED'.

I'm writing a Vulkan program running it on my Intel(R) Iris(R) Plus Graphics 640 on Windows. A Vulkan device report can be found here: https://vulkan.gpuinfo.org/displayreport.php?id=12907.

In this program, I'm performing timestamp queries. Occasionally, about once a minute, vkGetQueryPoolResults returns VK_NOT_READY
even though the VK_QUERY_RESULT_WAIT_BIT flag is set. This is a violation of
the spec: https://www.khronos.org/registry/vulkan/specs/1.2-extensions/man/html/vkGetQueryPoolResults.html. This doesn't seem to happen under any specific circumstances, just
generally running of my graphics program. If you want, I can send you a copy of the program.

My expectation is that the specification be followed. I've attached a report from the Graphics Command Center.

Re:Vulkan: vkGetQueryPoolResults occasionally returns VK_NOT_READY even though VK_QUERY_RESULT_WAIT_BIT

DeividA_Intel — Fri, 19 Nov 2021 18:46:12 GMT

Hello ashleyr,

Thank you for posting on the Intel® communities.

I would like to let you know that we have a specific forum for this kind of issue and product, it is called the Intel Developer Zone. There you will receive the appropriate support on this and other concerns you may have related to this product.

Here you will find the links to access the website and the community forums:

- https://software.intel.com/content/www/us/en/develop/home.html

- https://community.intel.com/t5/Software/ct-p/software-products

If you would like us to continue further, you will need to give us access to the tool or program that you are using, instructions, your code, etc. Please let me know if you would like to go to the Intel Developer Zone or continue with us.

Regards,

Deivid A.

Intel Customer Support Technician

Re:Vulkan: vkGetQueryPoolResults occasionally returns VK_NOT_READY even though VK_QUERY_RESULT_WAIT_BIT

DeividA_Intel — Wed, 24 Nov 2021 00:34:48 GMT

Hello ashleyr,

Were you able to check the previous post? Please let me know if you need more assistance.

Regards,

Deivid A.

Intel Customer Support Technician

Re:Vulkan: vkGetQueryPoolResults occasionally returns VK_NOT_READY even though VK_QUERY_RESULT_WAIT_BIT

DeividA_Intel — Thu, 25 Nov 2021 17:23:04 GMT

Hello ashleyr,

We have not heard back from you, so we will close this inquiry. If you need further assistance or if you have additional questions, please create a new thread and we will gladly assist you.

Regards,

Deivid A.

Intel Customer Support Technician