[mhh__]

The API apple wants you to use is documented and presumably is here to stay.

That doesn't help if there's some edge case you'd need access to the raw ISA but still.

[Someone]

Also, BLAS is part of that interface (https://developer.apple.com/documentation/accelerate/blas)

Of course it is a black box in that you can’t (realistically) try and speed it up. You still run the risk of Apple’s priorities being different from yours.

[kergonath]

OTOH the interfaces are standard. Using Accelerate instead of the standard BLAS is just a compiler switch.