From: Stephen Hemminger <stephen@networkplumber.org>
To: Tharaneedharan Vilwanathan <vdharani@gmail.com>
Cc: users@dpdk.org
Subject: Re: [dpdk-users] AVX-512
Date: Fri, 23 Feb 2018 11:38:04 -0800 [thread overview]
Message-ID: <20180223113804.7894413f@xeon-e3> (raw)
In-Reply-To: <CAN-HoCnzqoauYhZUUucoXPP_gbtWCay8_HsX3+grEV2XKf5Veg@mail.gmail.com>
On Fri, 23 Feb 2018 11:16:14 -0800
Tharaneedharan Vilwanathan <vdharani@gmail.com> wrote:
> Hi All,
>
> I have a quick question. I got a new server with the CPU that should have
> AVX-512 support but I don't see it in Linux (Ubuntu 18.04).
>
> Here is the output:
>
> auto@auto-virtual-machine:~$ *cat /proc/cpuinfo*
> processor : 0
> vendor_id : GenuineIntel
> cpu family : 6
> model : 85
> model name : *Intel(R) Xeon(R) Gold 6130 CPU @ 2.10GHz*
> stepping : 4
> microcode : 0x2000029
> cpu MHz : 2095.078
> cache size : 22528 KB
> physical id : 0
> siblings : 2
> core id : 0
> cpu cores : 2
> apicid : 0
> initial apicid : 0
> fpu : yes
> fpu_exception : yes
> cpuid level : 22
> wp : yes
> flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat
> pse36 clflush dts mmx fxsr sse sse2 ss ht syscall nx pdpe1gb rdtscp lm
> constant_tsc arch_perfmon pebs bts nopl xtopology tsc_reliable nonstop_tsc
> cpuid pni pclmulqdq ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt
> tsc_deadline_timer aes xsave avx f16c rdrand hypervisor lahf_lm abm
> 3dnowprefetch cpuid_fault invpcid_single pti fsgsbase tsc_adjust bmi1 hle
> avx2 smep bmi2 invpcid rtm rdseed adx smap xsaveopt arat
> bugs : cpu_meltdown spectre_v1 spectre_v2
> bogomips : 4190.15
> clflush size : 64
> cache_alignment : 64
> address sizes : 42 bits physical, 48 bits virtual
> power management:
>
> Can someone tell me why I don't see AVX-512?
>
> Appreciate your help.
>
> Thanks
> dharani
If you are running in a VM, make sure that your hypervisor passes the avx flags through.
In KVM this is usually done with the "Copy host CPU configuration" in virt manager.
next prev parent reply other threads:[~2018-02-23 19:38 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-23 19:16 Tharaneedharan Vilwanathan
2018-02-23 19:38 ` Stephen Hemminger [this message]
2018-03-02 1:57 ` Tharaneedharan Vilwanathan
2018-03-14 3:20 ` Don maillist
2018-03-14 5:34 ` Tharaneedharan Vilwanathan
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