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Old 22nd May 2018, 07:05   #11  |  Link
user1085
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Join Date: Apr 2018
Posts: 22
Anyone know how to build x265 2.8 with AVX512 enabled on Ubuntu?

I built x265 from 2.8 release tarball but x265 -V doesn't show me it's using AVX512 capability on a Intel Xeon

Code:
x265 [info]: HEVC encoder version 2.8
x265 [info]: build info [Linux][GCC 7.3.0][64 bit] 10bit
x265 [info]: using cpu capabilities: MMX2 SSE2Fast LZCNT SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
Here's the CPU info

Code:
uso@xvmub:~/x265_2.8/build/linux$ lscpu
Architecture:        x86_64
CPU op-mode(s):      32-bit, 64-bit
Byte Order:          Little Endian
CPU(s):              2
On-line CPU(s) list: 0,1
Thread(s) per core:  2
Core(s) per socket:  1
Socket(s):           1
NUMA node(s):        1
Vendor ID:           GenuineIntel
CPU family:          6
Model:               85
Model name:          Intel(R) Xeon(R) Platinum 8168 CPU @ 2.70GHz
Stepping:            4
CPU MHz:             2693.677
BogoMIPS:            5387.35
Virtualization:      VT-x
Hypervisor vendor:   Microsoft
Virtualization type: full
L1d cache:           32K
L1i cache:           32K
L2 cache:            1024K
L3 cache:            33792K
NUMA node0 CPU(s):   0,1
Flags:               fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ss ht syscall nx pdpe1gb rdtscp lm constant_tsc rep_good nopl xtopology cpuid pni pclmulqdq vmx ssse3 fma cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx f16c rdrand hypervisor lahf_lm abm 3dnowprefetch pti tpr_shadow vnmi ept vpid fsgsbase bmi1 hle avx2 smep bmi2 erms rtm mpx avx512f avx512dq rdseed adx smap clflushopt avx512cd avx512bw avx512vl xsaveopt xsavec xsaves
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