From: "Wiles, Keith" <keith.wiles@intel.com>
To: Cliff Burdick <shaklee3@gmail.com>
Cc: users <users@dpdk.org>,
"Richardson, Bruce" <bruce.richardson@intel.com>,
"Ananyev, Konstantin" <konstantin.ananyev@intel.com>
Subject: Re: [dpdk-users] RTE_MACHINE_TYPE Error
Date: Tue, 9 Oct 2018 19:59:09 +0000 [thread overview]
Message-ID: <38D6EF20-F968-44BD-9341-2DA5ECA62764@intel.com> (raw)
In-Reply-To: <CA+Gp1nZTTCrd8EvyjoYHjWHakSwTyVtx810KBirnHELaSM1duQ@mail.gmail.com>
> On Oct 9, 2018, at 9:56 AM, Cliff Burdick <shaklee3@gmail.com> wrote:
>
> I think I answered my own question -- the motherboards we're using had AES-NI disabled in the BIOS, so DPDK was correctly not seeing it enabled even though the processor supports it. I enabled it in the BIOS and it's working properly now. Thanks again Keith!
Ok great.
>
> On Tue, Oct 9, 2018 at 7:37 AM Cliff Burdick <shaklee3@gmail.com> wrote:
> Thanks Keith. You are right that /proc/cpuinfo on a E5-2680 v3 does not have AES listed. I was incorrect assuming this was a broadwell system, but it's Haswell. Either way, I'm still not quite clear what's going on since the gcc manual here (https://gcc.gnu.org/onlinedocs/gcc/x86-Options.html) specifies this:
>
> ‘haswell’
> Intel Haswell CPU with 64-bit extensions, MOVBE, MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, POPCNT, AVX, AVX2, AES, PCLMUL, FSGSBASE, RDRND, FMA, BMI, BMI2 and F16C instruction set support.
>
> Is the gcc manual specifying some other AES feature that's not what DPDK is listing?
>
>
>
>
> On Tue, Oct 9, 2018 at 6:54 AM Wiles, Keith <keith.wiles@intel.com> wrote:
>
>
> > On Oct 8, 2018, at 11:10 PM, Cliff Burdick <shaklee3@gmail.com> wrote:
> >
> > Hi, I'm trying to compile on a machine with an older-generation xeon than
> > the target, so I'm using CONFIG_RTE_MACHINE="broadwell" in the config.
> > gcc's options show that broadwell supports the AES flag, and I verified
> > that the build shows -march=broadwell. However, when I run my application
> > it prints immediately:
> >
> > ERROR: This system does not support "AES".
> > Please check that RTE_MACHINE is set correctly.
> > EAL: FATAL: unsupported cpu type.
> > EAL: unsupported cpu type.
> > EAL: Error - exiting with code: 1
> > Cause: Error with EAL initialization
> >
> > This is gcc 7, so it supports that flag. Does anyone know how I can compile
> > for a later architecture on an older machine?
>
> Have you checked to make sure the CPU does support the feature by looking that the CPU flags in /proc/cpuinfo ?
>
> Normally this is the reason the code will not run is the CPU does not support it.
>
> Regards,
> Keith
>
Regards,
Keith
next prev parent reply other threads:[~2018-10-09 20:00 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-09 4:10 Cliff Burdick
2018-10-09 13:54 ` Wiles, Keith
2018-10-09 14:37 ` Cliff Burdick
2018-10-09 14:56 ` Cliff Burdick
2018-10-09 19:59 ` Wiles, Keith [this message]
2018-10-09 20:45 ` Cliff Burdick
2018-10-09 19:58 ` Wiles, Keith
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