Performance

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[edit] Defect Type Description

This defect type is intended to cover scalability problems that occur because processors are not working in parallel.

[edit] Entries

Sub types:

Defect descriptions:

[edit] Advice

  • Make sure all processors are “working” in parallel
  • Profiling tool might help
  • Unbalanced amount of computation
  • Load balancing may depend on input data

[edit] Symptom

  • Sub-linear scalability
  • Performance much less than expected (e.g, most time spent waiting)

[edit] Other Findings and Contexts

There is a discussion on whether the definition of this defect type is consistent with other defect types, because defects classified to other types also cause performance problems.

Pages referring to this entry: Main Page Defect Classification Scheme (Mar 06) Load Balancing Scheduling Validation of the Defect Classification Scheme (Jan 06) by Interview Overview of HPC Defect Patterns Defect Classification Scheme (Mar 07) 

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