wrench::AmdahlParallelModel
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class AmdahlParallelModel : public wrench::ParallelModel
A class that defines an Amdahl’s Law-based parallel task performance model.
Public Functions
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double getAlpha() const
Get the Amdahl Law’s alpha parameter, i.e., the fraction of the sequential execution time that is parallelizable.
- Returns:
the alpha parameter (a value between 0.9 and 1.0)
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virtual double getParallelPerThreadWork(double total_work, unsigned long num_threads) override
Get the amount of per-thread parallel work.
- Parameters:
total_work – the total work
num_threads – the number of threads
- Returns:
an amount of work in flops
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virtual double getPurelySequentialWork(double total_work, unsigned long num_threads) override
Get the amount of purely sequential work.
- Parameters:
total_work – the total work
num_threads – the number of threads
- Returns:
an amount of work in flops
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void setAlpha(double alpha)
Set the Amdahl Law’s alpha parameter, i.e., the fraction of the sequential execution time that is parallelizable.
- Parameters:
alpha – the alpha parameter (a value between 0.9 and 1.0)
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double getAlpha() const