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cluster:91 [2010/12/28 14:40]
hmeij
cluster:91 [2011/01/07 15:49] (current)
hmeij
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 </code> </code>
  
-  *  +
   * INFINIBAND   * INFINIBAND
   * N calculation: 16 nodes, 8 gb per node for a total of 128 gb which yields 16 gb double precision (8 byte) elements … 16 gb is 16*1024*1024*1024 = 17,179,869,184 … take the square root of that and round 131,072 … 80% of that is 104,850   * N calculation: 16 nodes, 8 gb per node for a total of 128 gb which yields 16 gb double precision (8 byte) elements … 16 gb is 16*1024*1024*1024 = 17,179,869,184 … take the square root of that and round 131,072 … 80% of that is 104,850
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 </code> </code>
  
 +So a total of 2.455e+02 + 3.264e+0 or about 572 Gflops, 0.5 teraflops.
  
  
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   * NB: start with 64, then 128, try 192 ...   * NB: start with 64, then 128, try 192 ...
   * PxQ: perfect square of 9x10=92, close to the number of cores we have.   * PxQ: perfect square of 9x10=92, close to the number of cores we have.
 +
 +
 +Hmm, unable to make this work across all the nodes at the same time.  Not sure why.  My estimates are that with 92 cores and 1,126 gb of memory this cluster should be able to do 500-700 Gflops.
  
  
cluster/91.1293565208.txt.gz · Last modified: 2010/12/28 14:40 (external edit)