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Novice
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win10 +visual studio2019+intel c++ 19.1 + 0xC0000001D Illegal Instruction

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I attempt  to use AVX512 instruction Set in VS 2019(intel c++ compiler),

when I used __mm512_load_espi512()  or __mm512_load_si512() fuction,

The system printed 0xC000001D :Illegal Instruction error,

I don't know the reason.

zmmintrin.h file was included.

Plz help me fix it,

Best reguards.

The code file is attached.

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Moderator
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Re:win10 +visual studio2019+intel c++ 19.1 + 0xC00...

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Your CPU only supports up to AVX2, which explained why you got "illegal instructions error".


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Novice
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Re: win10 +visual studio2019+intel c++ 19.1 + 0xC0000001D Illegal Instruction

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when I compile the code ,both _mm512_load_si512()  and  _mm512_store_si512 () function are undifined.

But the head file included.

I don't know why?

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Re: win10 +visual studio2019+intel c++ 19.1 + 0xC0000001D Illegal Instruction

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You can use _mm512_load_epi32

They (_mm512_load_si512 and _mm512_load_epi32) use the same instruction vmovdqa32.

 

https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_mm512_load&expand=3345,3304

 
 

Hmm? Paste of image from clipboard no longer working....

2020-07-10_8-23-03.jpg

Jim Dempsey

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Re:win10 +visual studio2019+intel c++ 19.1 + 0xC00...

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Do you know if you system supports AVX-512?


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Novice
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Re: win10 +visual studio2019+intel c++ 19.1 + 0xC0000001D Illegal Instruction

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hi,Mr.Jim

Thank you very much for your reply.

Also,I used the instruction (_mm512_load_epi32),AVX2 instructions running good, additionally, I tested the other AVX512 instructions , it's the same issue.That doesn't seem to be the reason.

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Novice
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Re: Re:win10 +visual studio2019+intel c++ 19.1 + 0xC00...

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I don't know the system requirements of the AVX-512.

My Notebook system is Win10/CPU core is intel i7-10750H/memory is 16G.

Pls help check if it support ?Thanks so much.

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Moderator
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Re:win10 +visual studio2019+intel c++ 19.1 + 0xC00...

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Your CPU only supports up to AVX2, which explained why you got "illegal instructions error".


View solution in original post

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Novice
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Re: Re:win10 +visual studio2019+intel c++ 19.1 + 0xC00...

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What's the system minimum requirements?

^_^

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Moderator
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Re:win10 +visual studio2019+intel c++ 19.1 + 0xC00...

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Hi Stephen,

 

As already mentioned in the above reply by Viet, your processor does not support AVX-512. For more details, you can refer to the below link to get more details.

https://ark.intel.com/content/www/us/en/ark/products/201837/intel-core-i7-10750h-processor-12m-cache...

Check Instruction Set Extensions sections.

 

 

Warm Regards,

Abhishek

 

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Re: Re:win10 +visual studio2019+intel c++ 19.1 + 0xC00...

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hi,Abhishek

Thanks for your detailed reply, and I got it . 

Maybe I have to buy a new PC to solve this question.

^_^

Best regards,

stephen

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Moderator
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Re:win10 +visual studio2019+intel c++ 19.1 + 0xC00...

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Hi,

As your issue is resolved can we close this thread?

You are always welcome to post a new thread if you have any issues.



Warm Regards,

Abhishek


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