MacOS M1 neon support

[jianshu93]

Hello Team,

It is not supported on aarch64 or (arm64) platform such as macOS M1? Any plan to support it in the future?

Thanks,
Jianshu

[pierrebarbera]

Hi Jianshu, I think you should be able to run it on apple silicon using rosetta, which allows x86 programs to run. The performance impact should be minimal.

Pierre

[jianshu93]

Hello Pierre,
Yes I can run it using rosetta after trying. Just wondering whether there will be neon instruction support such as x86, which will be faster and more convenient for us to use.

Thanks,

Jianshu

[pierrebarbera]

Jianshu,

there is no plans from my side to add apple silicon native vector intrinsics, no. It was my impression that when processing data large enough for it to matter, users were running that on supercomputers. Also I no longer work in academia and can't justify the time investment.

Pierre

[jianshu93]

Hello again,
the brew install channel is not working for the same reason I think because I have no problem on intel MACs?

Last 15 lines from /Users/jianshuzhao/Library/Logs/Homebrew/epa-ng/02.make:
__cpuid_count(__leaf, __subleaf, *__eax, *__ebx, *__ecx, *__edx);
^
/Library/Developer/CommandLineTools/usr/lib/clang/14.0.3/include/cpuid.h:259:11: note: expanded from macro '__cpuid_count'
: "=a"(__eax), "=r" (__ebx), "=c"(__ecx), "=d"(__edx)
^
/tmp/epa-ng-20230918-23224-12j46qj/epa-ng-0.3.8/build/genesis_unity_sources/lib/all.cpp:27664:9: error: invalid output constraint '=a' in asm
__cpuid_count( 1, 0, info[0], info[1], info[2], info[3] );
^
/Library/Developer/CommandLineTools/usr/lib/clang/14.0.3/include/cpuid.h:259:11: note: expanded from macro '__cpuid_count'
: "=a"(eax), "=r" (ebx), "=c"(ecx), "=d"(edx)
^
5 errors generated.
make[2]: *** [libs/genesis/lib/genesis/CMakeFiles/genesis_lib_static.dir/////genesis_unity_sources/lib/all.cpp.o] Error 1
make[1]: *** [libs/genesis/lib/genesis/CMakeFiles/genesis_lib_static.dir/all] Error 2
make: *** [all] Error 2

Thanks

Jianshu

[lczech]

Hi @jianshu93,

are those errors occurring on intel MAC? It looks like the internal C++ standard library files are causing the error here. Have you tried @pierrebarbera suggestion to use the rosetta tool to solve this?

Cheers
Lucas