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DPC++ sample program execution is leading to segmentation fault in Elkhartlake platform

sumana
Employee
3,711 Views

Hi,

 

I am trying to execute DPC++ Sample program https://github.com/oneapi-src/oneAPI-samples/tree/master/DirectProgramming/DPC%2B%2B/DenseLinearAlgebra/vector-add on Elkhartlake platform (Intel Atom processor) with GPU as device selector.

 

We are receiving Segmentation fault on executing the above program. The same program works fine when CPU is chosen as device selector. I have executed the same program on ADL and TGL platform. 

 

Could you please let me know if DPC++ is supported for the EHL platform? If yes, how do i further debug the issue.

 

Thanks and Regards,

Sumana

 

 

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12 Replies
NoorjahanSk_Intel
Moderator
3,677 Views

Hi,

Thanks for reaching out to us.

We are working on your issue. We will get back to you soon.


Thanks & Regards,

Noorjahan.


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Alex_Y_Intel
Moderator
3,643 Views

Which compiler did you use? Have you tried Intel oneAPI IoT Toolkit?

https://www.intel.com/content/www/us/en/developer/tools/oneapi/iot-toolkit.html#gs.5p54ch


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sumana
Employee
3,629 Views

We have been using oneapi base toolkit. 

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Alex_Y_Intel
Moderator
3,617 Views

Can you please try Intel oneAPI IoT Toolkit and let us know if the problem still exists?


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sumana
Employee
3,605 Views

I tried again after installing one api iotg toolkit (l_IoTKit_p_2022.2.0.165_offline.sh). I am still facing the segmentation fault on EHL platform

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Alex_Y_Intel
Moderator
3,581 Views

Can you please try to reduce the vector size to about 100 and see if the issue still occurs?


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sumana
Employee
3,563 Views

Hi,

 

I am still observing the segmentation fault even with vector size 100

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Alex_Y_Intel
Moderator
3,539 Views

May I ask if you can see the same issue on Windows platform?

It looks like your machine only has OpenCL backend for your GPU, can you please check if you have Level Zero backend by finding libze* under your /usr directory? 
What's the version of your GPU driver? 
Can you please also provide your backtrace?

 

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Alex_Y_Intel
Moderator
3,379 Views

Since there's no further update, I'm closing the issue from our site. Please feel free to discuss further with the people in the forum, and open a new issue if necessary.


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sumana
Employee
3,309 Views

Sorry for the delayed response. Level zero is not supported in the EHL platform which we are using. We are using Ubuntu 20.04 OS

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Ashishti
Employee
3,291 Views

I am also getting same issue .  segmentation fault while running sample code on EHL board .

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Alex_Y_Intel
Moderator
3,078 Views

I can reproduce it on Elkhart Lake Linux machine, and this issue has been escalated to our developers. We'll work on it internally and get back to you when there's update.


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