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Subject:

Re: CPU comparisons/benchmarks

From:

Paul Kyberd <[log in to unmask]>

Reply-To:

Paul Kyberd <[log in to unmask]>

Date:

Thu, 25 Jan 2018 11:15:28 +0000

Content-Type:

multipart/mixed

Parts/Attachments:

Parts/Attachments

text/plain (1 lines) , cpu2006-20170626-47202.pdf (1 lines)

Ivan, 
 
Here is the specfp2006 on the 6126. I can try tracking down the others 
 
The CERN benchmarks for meltdown after the fixes are only showing a 2-4% 
slow down, but maybe it gets worse when a set of reliable fixes are available. 
 
Also not sure how dangerous the bug is for a set of machines sitting behind 
a firewall and accessible through a server machine. What is Raul's opinion 
 
Paul 
 
´╗┐On 25/01/2018, 10:55, "The UK High Energy Physics GRID List on behalf of Dr Ivan D. Reid" <[log in to unmask] on behalf of [log in to unmask]> wrote: 
 
    Hi; 
     	We're evaluating some offers for new machines, but the CPUs being  
    offered are new enough that I'm having trouble finding any comparisons or  
    benchmarks, let alone HEPSPECs.  Does anyone know of any comparisons between  
    these compute CPUs? 
     
    Xeon 6126, Xeon 6130, Xeon E5-2683v4, EPYC 7501 
     
     	Also, is there any consensus on the desirability or otherwise of 
    shunning Intel to avoid the Meltdown slowdown? 
     
     	Thanks, 
     		ivan 
     
    --  
                       Ivan Reid (ivan.reid@[brunel.ac.uk|cern.ch]) 
    Engineering, Design & Physical Sciences                CMS Collaboration, 
    Brunel University London. Room TOWD405                 CERN, Room 40-1-B12 
     
 

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