CPUID and NFD support: AVX_VNNI

[ionutnechita]

Hi NFD Team,

I have ADL CPU, but i not have AVX_VNNI in label list.
I have v0.11.0 image and this issue is observed.

This ticket is imported from NFD project.
kubernetes-sigs/node-feature-discovery#844

{
"beta.kubernetes.io/arch": "amd64",
"beta.kubernetes.io/os": "linux",
"feature.node.kubernetes.io/cpu-cpuid.ADX": "true",
"feature.node.kubernetes.io/cpu-cpuid.AESNI": "true",
"feature.node.kubernetes.io/cpu-cpuid.AVX": "true",
"feature.node.kubernetes.io/cpu-cpuid.AVX2": "true",
"feature.node.kubernetes.io/cpu-cpuid.CETIBT": "true",
"feature.node.kubernetes.io/cpu-cpuid.CETSS": "true",
"feature.node.kubernetes.io/cpu-cpuid.CMPXCHG8": "true",
"feature.node.kubernetes.io/cpu-cpuid.FMA3": "true",
"feature.node.kubernetes.io/cpu-cpuid.FXSR": "true",
"feature.node.kubernetes.io/cpu-cpuid.FXSROPT": "true",
"feature.node.kubernetes.io/cpu-cpuid.IBPB": "true",
"feature.node.kubernetes.io/cpu-cpuid.LAHF": "true",
"feature.node.kubernetes.io/cpu-cpuid.MOVBE": "true",
"feature.node.kubernetes.io/cpu-cpuid.MOVDIR64B": "true",
"feature.node.kubernetes.io/cpu-cpuid.MOVDIRI": "true",
"feature.node.kubernetes.io/cpu-cpuid.OSXSAVE": "true",
"feature.node.kubernetes.io/cpu-cpuid.SCE": "true",
"feature.node.kubernetes.io/cpu-cpuid.SERIALIZE": "true",
"feature.node.kubernetes.io/cpu-cpuid.SHA": "true",
"feature.node.kubernetes.io/cpu-cpuid.STIBP": "true",
"feature.node.kubernetes.io/cpu-cpuid.VMX": "true",
"feature.node.kubernetes.io/cpu-cpuid.WAITPKG": "true",
"feature.node.kubernetes.io/cpu-cpuid.X87": "true",
"feature.node.kubernetes.io/cpu-cpuid.XSAVE": "true",
"feature.node.kubernetes.io/cpu-hardware_multithreading": "true",
"feature.node.kubernetes.io/cpu-model.family": "6",
"feature.node.kubernetes.io/cpu-model.id": "154",
"feature.node.kubernetes.io/cpu-model.vendor_id": "Intel",
"feature.node.kubernetes.io/cpu-pstate.scaling_governor": "powersave",
"feature.node.kubernetes.io/cpu-pstate.status": "active",
"feature.node.kubernetes.io/cpu-pstate.turbo": "true",
"feature.node.kubernetes.io/cpu-rdt.RDTL2CA": "true",
"feature.node.kubernetes.io/kernel-config.NO_HZ": "true",
"feature.node.kubernetes.io/kernel-config.NO_HZ_IDLE": "true",
"feature.node.kubernetes.io/kernel-version.full": "5.15.0-40-generic",
"feature.node.kubernetes.io/kernel-version.major": "5",
"feature.node.kubernetes.io/kernel-version.minor": "15",
"feature.node.kubernetes.io/kernel-version.revision": "0",
"feature.node.kubernetes.io/pci-0300_8086.present": "true",
"feature.node.kubernetes.io/pci-0300_8086.sriov.capable": "true",
"feature.node.kubernetes.io/storage-nonrotationaldisk": "true",
"feature.node.kubernetes.io/system-os_release.ID": "ubuntu",
"feature.node.kubernetes.io/system-os_release.VERSION_ID": "22.04",
"feature.node.kubernetes.io/system-os_release.VERSION_ID.major": "22",
"feature.node.kubernetes.io/system-os_release.VERSION_ID.minor": "04",
"gpu.intel.com/cards": "card0",
"kubernetes.io/arch": "amd64",
"kubernetes.io/hostname": "10.10.10.10",
"kubernetes.io/os": "linux",
"node-role.kubernetes.io/worker": "true"
}

cpuid -1 | grep AVX-VNNI
AVX-VNNI: AVX VNNI neural network instrs = true
This CPU feature is not implemented in NFD?

BR,
Ionut Nechita
ionutnechita

[klauspost]

AVX512VNNI is detected. However, your CPU does not appear to enable this, or it isn't picked up.

Could you post the output from running the latest release binary?

[klauspost]

I do not believe a non-avx512 version of this exists.

[ionutnechita]

I need to reopen this ticket.

For ADL using cpuid-Linux_x86_64_2.0.14.tar.gz:

./cpuid
Name: 12th Gen Intel(R) Core(TM) i7-12800HE
Vendor String: GenuineIntel
Vendor ID: Intel
PhysicalCores: 20
Threads Per Core: 1
Logical Cores: 20
CPU Family 6 Model: 154
Features: ADX,AESNI,AVX,AVX2,BMI1,BMI2,CETIBT,CETSS,CLMUL,CMOV,CMPXCHG8,CX16,ERMS,F16C,FMA3,FXSR,FXSROPT,IBPB,LAHF,LZCNT,MMX,MMXEXT,MOVBE,MOVDIR64B,MOVDIRI,NX,OSXSAVE,PCONFIG,POPCNT,RDRAND,RDSEED,RDTSCP,SCE,SERIALIZE,SHA,SSE,SSE2,SSE3,SSE4,SSE42,SSSE3,STIBP,TME,VMX,WAITPKG,X87,XGETBV1,XSAVE,XSAVEC,XSAVEOPT,XSAVES
Microarchitecture level: 3
Cacheline bytes: 64
L1 Instruction Cache: 65536 bytes
L1 Data Cache: 32768 bytes
L2 Cache: 2097152 bytes
L3 Cache: 25165824 bytes
Frequency: 2600000000 Hz
Boost Frequency: 3500000000 Hz

CPUID LINUX: cpuid-linux-binary.txt

AVX-VNNI: AVX VNNI neural network instrs = true

AVX512 is not supported on this CPU. But AVX-VNNI is supported.

[klauspost]

@ionutnechita Why? Your CPU or OS does not support AVX512, so VNNI cannot be used. there is only avx512 vnni.

[ionutnechita]

And with this referrence: https://en.wikipedia.org/wiki/Alder_Lake

AVX-VNNI, a VEX-coded variant of AVX512-VNNI for 256-bit vectors

[ionutnechita]

I think is necessary to reopen this ticket and review my file: cpuid-linux-binary.txt.

A good day.

[klauspost]

Added in #110

[ionutnechita]

It's fine now:

Name: 12th Gen Intel(R) Core(TM) i9-12900E
Vendor String: GenuineIntel
Vendor ID: Intel
PhysicalCores: 12
Threads Per Core: 2
Logical Cores: 24
CPU Family 6 Model: 151
Features: ADX,AESNI,AVX,AVX2,AVXVNNI,BMI1,BMI2,CETIBT,CETSS,CLMUL,CMOV,CMPXCHG8,CX16,ERMS,F16C,FMA3,FXSR,FXSROPT,GFNI,HRESET,HTT,IBPB,LAHF,LZCNT,MMX,MMXEXT,MOVBE,MOVDIR64B,MOVDIRI,NX,OSXSAVE,PCONFIG,POPCNT,RDRAND,RDSEED,RDTSCP,SCE,SERIALIZE,SHA,SSE,SSE2,SSE3,SSE4,SSE42,SSSE3,STIBP,STOSB_SHORT,TME,VAES,VMX,VPCLMULQDQ,WAITPKG,X87,XGETBV1,XSAVE,XSAVEC,XSAVEOPT,XSAVES
Microarchitecture level: 3
Cacheline bytes: 64
L1 Instruction Cache: 32768 bytes
L1 Data Cache: 49152 bytes
L2 Cache: 1310720 bytes
L3 Cache: 31457280 bytes
Frequency: 2300000000 Hz
Boost Frequency: 5000000000 Hz

[ionutnechita]

Thank you for this fix.

A good day.