Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

Level 1

4 points

Why AVX-512 is not available on iMac Pro?

My iMac Pro should support AVX-512 vector instructions, and, indeed, "sysctl machdep.cpu.features" contains: AVX-512F, AVX-512CD, AVX-512BW, AVX-512DQ, AVX-512VL.

So I want to use it in my program, however when I execute a simple AVX-512F instruction, the program gets #UD. AFAIU, it happens because AVX-512 states are not enabled in XCR0.

Why they are not enabled by macOS?

iMac Pro, macOS High Sierra (10.13.3)

Posted on Jan 26, 2018 2:42 PM

Why AVX-512 is not available on iMac Pro?

Similar questions