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Hi,
How many NUMA nodes are on a Haswell EP E5 V3 with cluster-on-die QPI snoop mode disabled? I'm fairly sure it's one, but just want to confirm as there is quite a lot of misinformation on the Internet about this.
Cheers,
Jeremy
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Hi Jeremy_Saunders,
I am working on getting this information. I will be giving you a update in 24 to 48 hours.
Regards,
Mike C
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Hi Mike,
Do you have an answer for me?
Cheers,
Jeremy
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I am checking with Mike about this matter but we still do not have an update for you. Please keep checking this post for future updates.
Allan.
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Hi Jeremy_Saunders,
In regards to your question, I would need to get the specific model of the processor that you are interested. The current processors are below:
Intel® Xeon® Processor E5 v3 Family
http://ark.intel.com/products/family/78583/Intel-Xeon-Processor-E5-v3-Family# @Server http://ark.intel.com/products/family/78583/Intel-Xeon-Processor-E5-v3-Family# @Server
Regards,
Mike C
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Hi Mike,
My question is in relation to the E5-2600 v3 medium and high core count family of processor's, which all have the cluster-on-die feature.
Let's say any of the following: E5-2690 v3, E5-2695 v3, E5-2697 v3.
Cheers,
Jeremy
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Hi Jeremy_Saunders,
They have only 1 cluster-on-die. There are more details on the link below.
http://www.intel.com/content/www/us/en/processors/xeon/xeon-e5-brief.html http://www.intel.com/content/www/us/en/processors/xeon/xeon-e5-brief.html
Regards,
Mike C
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Thanks Mike, but your answer is quite confusing.
My questions was how many NUMA nodes are on a Haswell EP E5 V3 with cluster-on-die QPI snoop mode disabled?
What information in the link were you refering to? There is nothing there about NUMA nodes and/or cluster-on-die (COD)?
My question should be very simple for someone at Intel to answer.
Cheers,
Jeremy
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Hi Jeremy_Saunders,
I am going to double check your request with my supervisor. I will try to give you an answer as soon as possible.
The information available is the following:
CoD is only available on processors with 10 or more cores.
LLC misses are handled by the HA (Home Agent, not SA or System Agent) on the cluster that generated the miss.
Data is placed on the LLC slices on the ring requiring the core fetching them.
This document gives you useful information about Intel Cluster-on-Die (COD) Technology
https://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2142499 https://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2142499
NOTE: These links are being offered for your convenience and should not be viewed as an endorsement by Intel of the content, products, or services offered there.
Regards,
Mike C
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Thanks Mike. I already know all that. I've done extensive research on these processors and have read almost all the documents and PowerPoint presentations I could find.
Please, I'm just after an answer to my original question, which is going to be either 1 or 2.
Cheers,
Jeremy
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Hi Jeremy_Saunders,
I am working in your case, please be patient.
Regards,
Mike C
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Hi Jeremy_Saunders,
I am working in your case, please be patient.
Regards,
Mike C
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Hi Jeremy_Saunders,
I am working in your case, please be patient.
Regards,
Mike C
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Hi Mike,
Its been over 3 weeks since I first posted this. Is Intel going to provide an answer?
Cheers,
Jeremy
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Hi Jeremy_Saunders,
I apologize for the inconvenience. I have requested a update to my upper manager. It seems the information that you are requesting is not available in the public documentation.
Regards,
Mike C
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Thanks Mike. That would be great. Yes, a lot of documentation not in the public domain and far too many people making incorrect/inaccurate statements.
Can you also review , as I'm not getting anywhere there too!
Cheers,
Jeremy
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Hi Jeremy_Saunders,
Sure, I will do the request.
Regards,
Mike C
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Hi Mike,
It's now been 6 weeks, and you've also escalated to your manager, so surely we have an answer by now???
Cheers,
Jeremy
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Hi Jeremy_Saunders,
I will try to have an answer in 1 or 2 days. I apologize for the delay.
Regards,
Mike C
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Come on Mike. 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
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