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Hi Wei,

Yes, for #2 I meant ratio of core to disk. It will be difficult to know if 12 cores would be throttled by 4 disk RAID without having some kind of test stand I would think though. I'll try the atlint01 test sometime this coming week.

-Bart

Yang, Wei wrote:
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Hi Bart, 

thanks for the interesting slides. Comments regarding conclusion 2 and 3

In 2, I guess you really meant the ratio of core/disk? The boers have 4/1. With westmere , we have options of 12/4 (Dell r710) or 12/6,7,10 (Dell r510).

For 3, you can test on atlint01. It has 8 core (slightly faster cores). Its /scratch consists of 3x 140GB disks, raid-0 (stripe) which should be able to give roughly 3 times the performance of the single disk in boers.

regards,
Wei Yang  |  [log in to unmask]  |  650-926-3338(O)


On Jun 18, 2010, at 8:37 AM, Bart Butler wrote:

  
Talk from group meeting today about PROOF benchmarking.

Yang, Wei wrote:
    
sorry, stripping across 36 disks, not 32.

regards,
Wei Yang  |  
[log in to unmask]
  |  650-926-3338(O)


On Jun 15, 2010, at 12:12 PM, Yang, Wei wrote:

  

      
Here are how your data files are distributed among T2 data servers. Each T2 data server has a array of 46 disks and a file is stripped across 32 disks.
    

        
  

      
<June-18-2010-Group Meeting PROOF benchmarks.pdf>