search for: skylakes

On 2/7/2017 20:02, Kostya Serebryany wrote: > ... > > My understanding is that BNDCU is the cheapest possible instruction, > just like XOR or ADD, > so the overhead should be relatively small. > Still my guesstimate would be >= 5% since stores are very numerous. > And such overhead will be on top of whatever overhead SafeStack has. > Do you have any measurements to

CentOS 6.9 has support for the Haswell processor which is a subset of the Skylake. All Skylake server ancillary components work perfectly with CentOS 6.9. The AST2500 used with the Skylake is very good and will process UHD. However this is not backwards compatible with legacy variants. To make it work an ancillary graphics card is required which is less than $100. This will not break the

Hello, I have a pre-production Intel Skylake server using dual 8176 processors (28 core @2.1Ghz) I have loaded from the DVD distribution CentOS 7.3 and RHEL 7.4 with no problems. When I try and load CentOS 6.9 the boot process hangs just as the Anaconda graphics is started for CentOS configuration. If I use a secondary graphics card then the process completes with no problems and CentOS boots

Hi, some custom CPU models are reported from virConnectGetDomainCapabilities as usable='yes' on a physical machine while as usable='no' inside a VM running on the same machine. That's not completely surprising. But what surprises me is that those models are still reported from virConnectCompareCPU as supported (VIR_CPU_COMPARE_SUPERSET) in the nested environment and VMs can

Hello, 1. Can you please tell me how can I find the type of my Intel Xeon?I see in LLVM code that Intel Xeon processors can be of type "core2", "penryn", "westmere", "skylake". 2. I also see that "skylake" can be a type and a subtype as well.How can I find out the subtype of my architecture? Looking forward for you answer. Thank you.Iulia On

Hi -- I have found a bug in an HPC code where llvm is vectorizing a loop on Skylake that has an obvious recurrence. I derived a small test case based on the original benchmark below: /*****************************************************************/ static void __attribute__ ((always_inline)) one( const int *restrict in, const int *const end, const unsigned shift, int *const restrict index,

https://access.redhat.com/support/policy/intel shows mainly Xeon CPUs. What about Intel Core i7-6700 Quad-Core Skylake has the current EL6 variant support for it? Any experience? Feedback would be greatly appreciated. Thanks, LF

Hello, I have an Intel NUC6i5 (Skylake i5-6260u processor) running CentOS 6.9 and there are no real problems. However during boot an error occurs in dmesg where a PCH unknown device 0x9d48 is logged. How can I get rid of this error output? Thank you, Mark

Hi, I have a JIT compiler using the legacy JIT on LLVM 3.5 that, when run on the Xeon v5 Skylakes produces "Cannot select: intrinsic %llvm.x86.sse41.round.sd". Note, this does not occur on i7 Kabylakes. To get this far I had to disable AVX512 code gen. Upgrading the system I am looking at from 3.5 to a later version is a big job that I'd prefer not to have on my critical path. D...

Jiri Denemark <jdenemar@redhat.com> writes: > On Fri, Dec 07, 2018 at 11:52:38 +0100, Milan Zamazal wrote: >> Hi, some custom CPU models are reported from >> virConnectGetDomainCapabilities as usable='yes' on a physical machine > >> while as usable='no' inside a VM running on the same machine. That's >> not completely surprising. >>

...abylake? How did you disable AVX-512 code gen? > > ~Craig > >> On Mon, May 8, 2017 at 9:21 AM, Andy Schneider via llvm-dev <llvm-dev at lists.llvm.org> wrote: >> Hi, >> >> I have a JIT compiler using the legacy JIT on LLVM 3.5 that, when run on the Xeon v5 Skylakes produces "Cannot select: intrinsic %llvm.x86.sse41.round.sd". Note, this does not occur on i7 Kabylakes. To get this far I had to disable AVX512 code gen. >> >> Upgrading the system I am looking at from 3.5 to a later version is a big job that I'd prefer not to have on my...

Hello, Could someone please answer the following question: Does LLVM support code generation for Intel Processors? Which Intel processors are supported? I am interested especially in Intel Xeon Processor, but you can give me information about the others as well. Thank you,Iulia -------------- next part -------------- An HTML attachment was scrubbed... URL:

...did you disable AVX-512 code gen? > > ~Craig > > On Mon, May 8, 2017 at 9:21 AM, Andy Schneider via llvm-dev < > llvm-dev at lists.llvm.org> wrote: > >> Hi, >> >> I have a JIT compiler using the legacy JIT on LLVM 3.5 that, when run on >> the Xeon v5 Skylakes produces "Cannot select: intrinsic % >> llvm.x86.sse41.round.sd". Note, this does not occur on i7 Kabylakes. To >> get this far I had to disable AVX512 code gen. >> >> Upgrading the system I am looking at from 3.5 to a later version is a big >> job that I'...

> Am 11.05.2017 um 16:29 schrieb Leon Fauster <leonfauster at googlemail.com>: > >> Am 11.05.2017 um 14:48 schrieb Leon Fauster <leonfauster at googlemail.com>: >> >> https://access.redhat.com/support/policy/intel >> >> shows mainly Xeon CPUs. What about >> >> Intel Core i7-6700 Quad-Core Skylake >> >> has the current EL6

On Mon, Sep 14, 2020 at 8:42 AM Yedidyah Bar David <didi@redhat.com> wrote: > > On Mon, Sep 14, 2020 at 12:28 AM wodel youchi <wodel.youchi@gmail.com> wrote: > > > > Hi, > > > > Thanks for the help, I think I found the solution using this link : https://www.berrange.com/posts/2018/06/29/cpu-model-configuration-for-qemu-kvm-on-x86-hosts/ > > > >

Hello Andy, The CentOS 6.9 kernel we are using is 2.6.32-696.el6.x86_64. Regards, Mark Woolfson MW Consultancy Ltd Leeds United Kingdom Tel: +44 113 259 1204 Mob: +44 786 065 2778 -----Original Message----- From: Andreas Benzler Sent: Wednesday, May 31, 2017 9:54 AM To: CentOS mailing list Subject: Re: [CentOS] CentOS 6.9 Skylake soft error Hello Mark, which kernel you use? Sometimes it is

I upgraded from 7.3 to 7.4 over the weekend.? Everything went well except that I can't login because the screen is black with a cursor. If reboot boot the 7.3 kernel 3.10.0-514.26.2.el7.x86_64 kernel everything works just fine, so my guess is that there's a kernel issue with the hardware, specifically the Skylake processor. Has anyone else run into this problem and if so can how I

You need at least a newer kernel. If you like you can try out http://elrepo.org/tiki/tiki-index.php <http://elrepo.org/tiki/tiki-index.php> With 3.10 I?m personal unsure kernel-lt-3.10.104-1.el6.elrepo.x86_64.rpm <http://elrepo.reloumirrors.net/kernel/el6/x86_64/RPMS/kernel-lt-3.10.104-1.el6.elrepo.x86_64.rpm> But got here centos with 4.11.3 running quiet well.

Hello, There was a support issue with the Intel Skylake and CentOS 6.* where the graphics hardware was not supported. Intel have now come up with a software solution to support the AST2500 graphics hardware on the Skylake. Regards, Mark Woolfson MW Consultancy Ltd Leeds LS18 4LY United Kingdom Tel: +44 113 259 1204 Mob: +44 786 065 2778 --- This email has been checked for viruses by AVG.

On Fri, Dec 07, 2018 at 11:52:38 +0100, Milan Zamazal wrote: > Hi, some custom CPU models are reported from > virConnectGetDomainCapabilities as usable='yes' on a physical machine > while as usable='no' inside a VM running on the same machine. That's > not completely surprising. > > But what surprises me is that those models are still reported from >