3 Sep
2022
3 Sep
'22
13:37
On 9/3/22 06:55, Patrick Shanahan wrote:
ollowing script will tell you what your processor level is,
#!/usr/bin/awk -f BEGIN { while (!/flags/) if (getline < "/proc/cpuinfo" != 1) exit 1 if (/lm/&&/cmov/&&/cx8/&&/fpu/&&/fxsr/&&/mmx/&&/syscall/&&/sse2/) level = 1 if (level == 1 &&/cx16/&&/lahf/&&/popcnt/&&/sse4_1/&&/sse4_2/&&/ssse3/) level = 2 if (level == 2 &&/avx/&&/avx2/&&/bmi1/&&/bmi2/&&/f16c/&&/fma/&&/abm/&&/movbe/&&/xsave/) level = 3 if (level == 3 &&/avx512f/&&/avx512bw/&&/avx512cd/&&/avx512dq/&&/avx512vl/) level = 4 if (level > 0) { print "CPU supports x86-64-v" level; exit level + 1 } exit 1 }
How does that work for processors with avx, but no avx2? -- David C. Rankin, J.D.,P.E.