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src/org/cloudbus/cloudsim/power/models/PowerModelSpecPower.java

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+/*
+ * Title:        CloudSim Toolkit
+ * Description:  CloudSim (Cloud Simulation) Toolkit for Modeling and Simulation of Clouds
+ * Licence:      GPL - http://www.gnu.org/copyleft/gpl.html
+ *
+ * Copyright (c) 2009-2012, The University of Melbourne, Australia
+ */
+
+package org.cloudbus.cloudsim.power.models;
+
+/**
+ * The abstract class of power models created based on data from SPECpower benchmark:
+ * http://www.spec.org/power_ssj2008/
+ * 
+ * If you are using any algorithms, policies or workload included in the power package, please cite
+ * the following paper:
+ * 
+ * Anton Beloglazov, and Rajkumar Buyya, "Optimal Online Deterministic Algorithms and Adaptive
+ * Heuristics for Energy and Performance Efficient Dynamic Consolidation of Virtual Machines in
+ * Cloud Data Centers", Concurrency and Computation: Practice and Experience (CCPE), Volume 24,
+ * Issue 13, Pages: 1397-1420, John Wiley & Sons, Ltd, New York, USA, 2012
+ * 
+ * @author Anton Beloglazov
+ * @since CloudSim Toolkit 3.0
+ */
+public abstract class PowerModelSpecPower implements PowerModel {
+
+	/*
+	 * (non-Javadoc)
+	 * @see org.cloudbus.cloudsim.power.models.PowerModel#getPower(double)
+	 */
+	@Override
+	public double getPower(double utilization) throws IllegalArgumentException {
+		if (utilization < 0 || utilization > 1) {
+			throw new IllegalArgumentException("Utilization value must be between 0 and 1");
+		}
+		if (utilization % 0.1 == 0) {
+			return getPowerData((int) (utilization * 10));
+		}
+		int utilization1 = (int) Math.floor(utilization * 10);
+		int utilization2 = (int) Math.ceil(utilization * 10);
+		double power1 = getPowerData(utilization1);
+		double power2 = getPowerData(utilization2);
+		double delta = (power2 - power1) / 10;
+		double power = power1 + delta * (utilization - (double) utilization1 / 10) * 100;
+		return power;
+	}
+
+	/**
+	 * Gets the power data.
+	 * 
+	 * @param index the index
+	 * @return the power data
+	 */
+	protected abstract double getPowerData(int index);
+
+}