Re: [dpdk-users] RTE_MACHINE_TYPE Error

[Cliff Burdick <shaklee3@gmail.com>]

It was my mistake. It's a server haswell processor, but the BIOS had AES-NI
disabled. I enabled it, recompiled with CONFIG_RTE_MACHINE="haswell", and
it works great now. Thanks!

On Tue, Oct 9, 2018 at 1:00 PM Wiles, Keith <keith.wiles@intel.com> wrote:

>
>
> > 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
>
>