Package edu.isi.pegasus.planner.provisioner

Class Estimator

  • public class Estimator
extends java.lang.Object
    This Estimator is used to find the near-optimal number of processors required to complete workflow within a given RFT(requested finish time). This estimator read workflow from a DAX file and user can select one estimation method among BTS, DSC, and IterHEFT. User also need to provide RFT and the precision of the predictied execution time.
    Author:
    Eunkyu Byun

    • Constructor Summary

      Constructors 
      Constructor Description
      Estimator​(java.lang.String fileName, java.lang.String methodID, long RFT, int prec)
      Constructor

    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      private int BTS()  
      private void calculateSlotSize()  
      private int DSC()  
      int estimate()
      Estimate the number of processors and return the value.
      private long HEFT​(int size)  
      private int IterHEFT()  
      static void main​(java.lang.String[] args)  
      private void readDAX()  
      private void updateETs()  

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Field Detail

      • fileName

        private java.lang.String fileName

      • method

        private java.lang.String method

      • RFT

        private long RFT

      • prec

        private int prec

      • topNode

        private Node topNode

      • bottomNode

        private Node bottomNode

      • edges

        private java.util.HashSet edges

      • nodes

        private java.util.HashMap nodes

      • totalET

        private long totalET

    • Constructor Detail

      • Estimator

        public Estimator​(java.lang.String fileName,
                 java.lang.String methodID,
                 long RFT,
                 int prec)
        Constructor
        Parameters:
        fileName - DAX file describing the workflow
        methodID - One of those; BTS, DSC, IterHEFT
        RFT - requested finish time. i.e., deadline
        prec - The precision of the predicted execution time

    • Method Detail

      • readDAX

        private void readDAX()
              throws java.lang.Exception
        Throws:
        java.lang.Exception

      • calculateSlotSize

        private void calculateSlotSize()

      • updateETs

        private void updateETs()

      • BTS

        private int BTS()

      • DSC

        private int DSC()

      • IterHEFT

        private int IterHEFT()

      • HEFT

        private long HEFT​(int size)

      • estimate

        public int estimate()
             throws java.lang.RuntimeException
        Estimate the number of processors and return the value.
        Returns:
        Estimated number of processors
        Throws:
        java.lang.RuntimeException

      • main

        public static void main​(java.lang.String[] args)