User Tools

Site Tools


cluster:123

Warning: Undefined array key -1 in /usr/share/dokuwiki/inc/html.php on line 1458

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision
Previous revision
cluster:123 [2013/10/18 09:55]
hmeij [Update]
cluster:123 [2013/10/23 14:52] (current)
hmeij [Summary]
Line 52: Line 52:
  
  
-^Tnodes^Tcores^THcores^Tmem gb^Watts^%of Dell^TEnergy^TEnergy $/Y^TEsavings $/Y^Quote $^ROI Y^Gflops^ + Tnodes^  Tcores^  THcores^  Tmem gb^  Watts^  %of Dell^  TEnergy^  TEnergy $/Y^  TEsavings $/Y^  Quote $^   ROI Y^  Gflops^ 
-|10|160|320|2,560|3,650|29|7,300|7,994|19,495|$76,866|3.9| |+ 10|  160|  320|  2,560|  3,650|  29|  7,300|  7,994|  19,495|  76,866|  3.9|  3,328| 
 +|  9|  144|  288|  2,304|  3,285|  26|  6,570|  7,194|  20,295|  69,290|  3.4|  2,995| 
 +|  8|  128|  256|  2,048|  2,920|  23|  5,840|  6,395|  21,094|  61,714|  2.9|  2,662| 
 +|  7|  112|  224|  1,792|  2,555|  20|  5,110|  5,596|  21,893|  54,138|  2.4|  2,329|
  
  
 +==== Summary ====
 +
 +The Dell racks were bought in 2006. They contain 30 compute nodes, two UPS units, two disks arrays and two switches. Measurements of 2/3rds of the compute nodes with a Kill-A-Watt meter yields an average consumption of 418.4 watts (if the nodes are computing or not).  That totals to 109,956 KwH/year for power, a low water mark. Measurements at the utility panel for one of the racks yields a consumption of 126,000 KwH/year. Cooling requirements (not measured) are assumed to be equal to that.
 +
 +Using the low water mark, and a cost per KwH (inclusive of cogen generation costs, maintenance, CP&L power imports, heat reclamation costs, etc), the total cost for both  power and cooling consumption is estimated at $27,489 per year for the Dell racks.
 +
 +New hardware could replace the Dell's functionality and reduce power/cooling needs in the data center while yielding significant savings.  An 8-node cluster with each node comprised of dual 8 core CPUs, each with 256 GB of memory and a 15K 300 GB hard disk, all nodes connected to a high throughput/low latency switch, would match or exceed key parameters such as gigaflops of computational power and number of job slots provided (with hyperthreading enabled).
 +
 +Such a cluster would consume 77% less energy generating $21,094 in saving per year (after accounting for energy needs of that 8-node cluster).  This implies that in 2.9 years the cost of acquiring that 8-node cluster ($61,714) will be recouped. Based on the low water mark.
  
 \\ \\
 **[[cluster:0|Back]]** **[[cluster:0|Back]]**
cluster/123.1382104540.txt.gz · Last modified: 2013/10/18 09:55 by hmeij