Linpack Last updated: January 19, 2003

Linpack is a numerical program that solves a dense 500x500 system of linear equations with one right hand side, Ax=b. The matrix is generated randomly and the right hand side is constructed so the solution has all components equal to one. The method of solution is based on Gaussian elimination with partial pivoting. (see Linpack Java).

Metrics

• base.allocatedBytes.value: 1345288
• base.allocations.value: 5982
• base.executedInstructions.value: 8837598
• base.methods.value: 36809
• base.loadedClasses.value: 384
• memory.byteAllocationDensity.value: 152.223
• memory.objectAllocationDensity.value: 0.677
• memory.averageObjectSize.value: 224.889
• memory.averageObjectSize.bin:
  
  

  From	To	Value
  8	8	0.005
  16	16	0.138
  24	24	0.316
  32	32	0.077
  40	40	0.084
  48	72	0.233
  80	136	0.067
  144	392	0.036
  400	+Inf	0.044

  
  
• polymorphism.callSites.value: 527
• polymorphism.receiverArity.bin:
  
  

  From	To	Value
  1	1	0.977
  2	2	0.021
  3	+Inf	0.002

  
  
• polymorphism.targetArity.bin:
  
  

  From	To	Value
  1	1	0.987
  2	2	0.011
  3	+Inf	0.002

  
  
• polymorphism.receiverArityCalls.bin:
  
  

  From	To	Value
  1	1	0.973
  2	2	0.010
  3	+Inf	0.011

  
  
• polymorphism.targetArityCalls.bin:
  
  

  From	To	Value
  1	1	0.981
  2	2	0.003
  3	+Inf	0.011

  
  
• polymorphism.receiverPolyDensity.value: 0.023
• polymorphism.targetPolyDensity.value: 0.013
• polymorphism.receiverCacheMissRate.value: 0.035
• polymorphism.targetCacheMissRate.value: 0.028
• polymorphism.callSites.value (Application Only): 39
• polymorphism.receiverArity.bin (Application Only):
  
  

  From	To	Value
  1	1	1.000
  2	2	0.000
  3	+Inf	0.000

  
  
• polymorphism.targetArity.bin (Application Only):
  
  

  From	To	Value
  1	1	1.000
  2	2	0.000
  3	+Inf	0.000

  
  
• polymorphism.receiverArityCalls.bin (Application Only):
  
  

  From	To	Value
  1	1	1.000
  2	2	0.000
  3	+Inf	0.000

  
  
• polymorphism.targetArityCalls.bin (Application Only):
  
  

  From	To	Value
  1	1	1.000
  2	2	0.000
  3	+Inf	0.000

  
  
• polymorphism.receiverPolyDensity.value (Application Only): 0.000
• polymorphism.targetPolyDensity.value (Application Only): 0.000
• polymorphism.receiverCacheMissRate.value (Application Only): 0.004
• polymorphism.targetCacheMissRate.value (Application Only): 0.004
• size.load.value: 1056
• size.run.value: 749
• size.hot.value: 59
• size.hot.percentile: 0.079
• concurrency.lockDensity.value: 0.020
• concurrency.lockContendedDensity.value: 0.000
• concurrency.lock.percentile: 0.650
• concurrency.lockContended.percentile: N/A
• data.floatDensity.value: 278.205
• data.arrayDensity.value: 149.597

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