Keywords: user_guide

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# 4 Performances

Subsections

- 4.1 Execution time
- 4.2 Memory requirements
- 4.3 File space requirements
- 4.4 Parallelization issues
- 4.5 Understanding the time report
  - 4.5.1 Serial execution
  - 4.5.2 Parallel execution
    - 4.5.2.1 Quick estimate of parallelization parameters
    - 4.5.2.2 Typical symptoms of bad/inadequate parallelization
- 4.6 Restarting
  - 4.6.1 Signal trapping (experimental!)