topic Re: Haswell EX E7 V3 and the cluster-on-die QPI snoop mode in Mobile and Desktop Processors

Haswell EX E7 V3 and the cluster-on-die QPI snoop mode

JSaun1 — Wed, 09 Mar 2016 00:54:57 GMT

Hi,

Does the Haswell EX E7 V3 have the cluster-on-die QPI snoop mode? I have been unable to find clear documentation that states it either way. All documentation is focused on the EP E5 V3 processors.

Cheers,

Jeremy

Re: Haswell EX E7 V3 and the cluster-on-die QPI snoop mode

Amy_C_Intel — Thu, 10 Mar 2016 14:46:19 GMT

Hello, @Jeremy_Saunders:

Let me double check this information with the engineering department. I will be updating this thread.

Regards

Re: Haswell EX E7 V3 and the cluster-on-die QPI snoop mode

JSaun1 — Mon, 21 Mar 2016 12:40:18 GMT

Hi Amy,

Do you have an answer for me?

Cheers,

Jeremy

Re: Haswell EX E7 V3 and the cluster-on-die QPI snoop mode

KTran10 — Tue, 22 Mar 2016 19:22:40 GMT

QPI E5 V3 should be the same as E7 in term of QPI, except EX has extra QPI.

Re: Haswell EX E7 V3 and the cluster-on-die QPI snoop mode

JSaun1 — Tue, 22 Mar 2016 20:55:28 GMT

Thanks langtu. I'm aware of that, but you didn't answer my question on snoop modes. You say "should" be the same, but you haven't referenced any documentation that clearly states that.

Cheers,

Jeremy

Re: Haswell EX E7 V3 and the cluster-on-die QPI snoop mode

KTran10 — Tue, 22 Mar 2016 23:48:24 GMT

You might try to read it for QPI specs

http://sp.ts.fujitsu.com/dmsp/Publications/public/wp-haswell-bios-settings-primergy-ww-en.pdf http://sp.ts.fujitsu.com/dmsp/Publications/public/wp-haswell-bios-settings-primergy-ww-en.pdf

http://www.intel.com/content/dam/doc/white-paper/quick-path-interconnect-introduction-paper.pdf http://www.intel.com/content/dam/doc/white-paper/quick-path-interconnect-introduction-paper.pdf

Re: Haswell EX E7 V3 and the cluster-on-die QPI snoop mode

JSaun1 — Tue, 22 Mar 2016 23:56:08 GMT

Thanks again langtu.

I've already read the QPI specs and completed extensive research.

The first document you referenced is for the E5 v3, which as we know already supports cluster-on-die.

The second document you referenced has no mention of cluster-on-die. It's actually a 2009 document, so pre-dates the technology.

So once again, does the Haswell EX E7 V3 have the cluster-on-die QPI snoop mode?

Cheers,

Jeremy

Re: Haswell EX E7 V3 and the cluster-on-die QPI snoop mode

KTran10 — Wed, 23 Mar 2016 16:19:51 GMT

EX E7 V3 has same specs as E5 V3.

Re: Haswell EX E7 V3 and the cluster-on-die QPI snoop mode

Amy_C_Intel — Wed, 23 Mar 2016 17:08:57 GMT

Hello, All:

langtu, thank you for your feedback.

@Jeremy_Saunders, I am still checking with the engineering department.

I will keep you posted.

Regards,

Re: Haswell EX E7 V3 and the cluster-on-die QPI snoop mode

JSaun1 — Wed, 23 Mar 2016 21:10:30 GMT

Thanks langtu. Where is the documentation that states that?

Re: Haswell EX E7 V3 and the cluster-on-die QPI snoop mode

JSaun1 — Wed, 23 Mar 2016 21:11:45 GMT

Thanks Amy.

Re: Haswell EX E7 V3 and the cluster-on-die QPI snoop mode

JSaun1 — Wed, 30 Mar 2016 16:49:44 GMT

Hi Amy,

Its been over 3 weeks since I first posted this. Is Intel going to provide an answer?

Cheers,

Jeremy

Re: Haswell EX E7 V3 and the cluster-on-die QPI snoop mode

Amy_C_Intel — Mon, 04 Apr 2016 18:27:01 GMT

@Jeremy_Saunders, I am still checking with the engineering department.

Thank you for your patience.

Regards,

Re: Haswell EX E7 V3 and the cluster-on-die QPI snoop mode

JSaun1 — Mon, 18 Apr 2016 23:39:27 GMT

Hi Amy,

It's now been 8 weeks and you've checked with the Engineering department, so surely you have an answer for me by now???

Cheers,

Jeremy

Re: Haswell EX E7 V3 and the cluster-on-die QPI snoop mode

Amy_C_Intel — Tue, 19 Apr 2016 18:32:29 GMT

Hello, Jeremy:

This is still under review, I apologize for the delay.

I will keep you posted.

Regards,

Amy.

Re: Haswell EX E7 V3 and the cluster-on-die QPI snoop mode

JSaun1 — Wed, 20 Apr 2016 15:22:31 GMT

Come on Amy. This is ridiculous and rather embarrassing for Intel and yourself. How can it take 8+weeks to answer a simple question? You've been promising me an answer for weeks.

Cheers,

Jeremy

Re: Haswell EX E7 V3 and the cluster-on-die QPI snoop mode

Amy_C_Intel — Thu, 21 Apr 2016 16:39:03 GMT

Yes, Jeremy, I totally understand this. I am going to request an update for this.

I apologize for the inconvenience.

Regards,

Amy.

Re: Haswell EX E7 V3 and the cluster-on-die QPI snoop mode

Ronny_G_Intel — Tue, 26 Apr 2016 20:39:59 GMT

Hi Jeremy,

I really apologize for the long time it took for my team to get this information, I am really sorry about that and let me tell you that because of that we are taking actions to improve our response time on issues such as this one. Again, I am really sorry about this and I have no excuses

This is the information I was able to get from the engineering team: Snoop Modes is not supported on Xeon E7 Haswell, only supported on Xeon E7 v4 Broadwell (+COD up to 4S)

I hope this helps,

Ronny G

Re: Haswell EX E7 V3 and the cluster-on-die QPI snoop mode

JSaun1 — Wed, 27 Apr 2016 00:38:28 GMT

Hi Ronny,

Thanks for your efforts in answering my question.

Can I ask for 1 clarification? What does "+COD up to 45" mean for the E7 v4 Broadwell? There is little information on the Broadwell E7 processors, so I'm not sure what that means?

Can you also give Mike some help with my other query here:

Cheers,

Jeremy

Re: Haswell EX E7 V3 and the cluster-on-die QPI snoop mode

Ronny_G_Intel — Wed, 27 Apr 2016 21:32:11 GMT

Hi Jeremy,

COD up to 4S refers to Cluster on Die up to 4S when cluster on die (COD) operation mode is supported allowing CPU's multiple columns of cores.

Unfortunately most of any related information is only available to customers under (CNDA) Customer Non-Disclosure Agreement and with previous business justification and correspondent approval, of course it cannot be provided via this forum.

If you need more information I would recommend that you contact an Intel Field Application engineer or http://www.intel.com/content/www/us/en/support/contact-support.html Contact Support and create a service ticket, please provide as much information as possible about your business, reason for this information and business impact, they would have to escalate up the service ticket and have you going through the CNDA process.

I hope this helps,

Ronny G