Added: 3 power models of IBM servers using the data from SPECpower

modules/cloudsim/src/main/java/org/cloudbus/cloudsim/power/models/PowerModel.java

@@ -23,11 +23,9 @@ public interface PowerModel {
 	 * according to the power model.
 	 *
 	 * @param utilization the utilization
-	 *
 	 * @return power consumption
-	 *
-	 * @throws Exception the exception
+	 * @throws IllegalArgumentException the illegal argument exception
 	 */
-	double getPower(double utilization) throws Exception;
+	double getPower(double utilization) throws IllegalArgumentException;
 
 }

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

+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/
+ */
+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);
+
+}

modules/cloudsim/src/main/java/org/cloudbus/cloudsim/power/models/PowerModelSpecPowerIbmX3250XeonX3480.java

+package org.cloudbus.cloudsim.power.models;
+
+/**
+ * The power model of an IBM server x3250 (1 x [Xeon X3480 3067 MHz, 4 cores], 8GB).
+ * http://www.spec.org/power_ssj2008/results/res2010q4/power_ssj2008-20101001-00297.html
+ */
+public class PowerModelSpecPowerIbmX3250XeonX3480 extends PowerModelSpecPower {
+
+	/** The power. */
+	private final double[] power = { 42.3, 46.7, 49.7, 55.4, 61.8, 69.3, 76.1, 87, 96.1, 106, 113 };
+
+	/* (non-Javadoc)
+	 * @see org.cloudbus.cloudsim.power.models.PowerModelSpecPower#getPowerData(int)
+	 */
+	@Override
+	protected double getPowerData(int index) {
+		return power[index];
+	}
+
+}

modules/cloudsim/src/main/java/org/cloudbus/cloudsim/power/models/PowerModelSpecPowerIbmX3550XeonX5670.java

+package org.cloudbus.cloudsim.power.models;
+
+/**
+ * The power model of an IBM server x3550 (2 x [Xeon X5670 2933 MHz, 6 cores], 12GB).
+ * http://www.spec.org/power_ssj2008/results/res2010q2/power_ssj2008-20100315-00239.html
+ */
+public class PowerModelSpecPowerIbmX3550XeonX5670 extends PowerModelSpecPower {
+
+	/** The power. */
+	private final double[] power = { 66, 107, 120, 131, 143, 156, 173, 191, 211, 229, 247 };
+
+	/* (non-Javadoc)
+	 * @see org.cloudbus.cloudsim.power.models.PowerModelSpecPower#getPowerData(int)
+	 */
+	@Override
+	protected double getPowerData(int index) {
+		return power[index];
+	}
+
+}

modules/cloudsim/src/main/java/org/cloudbus/cloudsim/power/models/PowerModelSpecPowerIbmX3550XeonX5675.java

+package org.cloudbus.cloudsim.power.models;
+
+/**
+ * The power model of an IBM server x3550 (2 x [Xeon X5675 3067 MHz, 6 cores], 16GB).
+ * http://www.spec.org/power_ssj2008/results/res2011q2/power_ssj2008-20110406-00368.html
+ */
+public class PowerModelSpecPowerIbmX3550XeonX5675 extends PowerModelSpecPower {
+
+	/** The power. */
+	private final double[] power = { 58.4, 98, 109, 118, 128, 140, 153, 170, 189, 205, 222 };
+
+	/* (non-Javadoc)
+	 * @see org.cloudbus.cloudsim.power.models.PowerModelSpecPower#getPowerData(int)
+	 */
+	@Override
+	protected double getPowerData(int index) {
+		return power[index];
+	}
+
+}

modules/cloudsim/src/test/java/org/cloudbus/cloudsim/power/models/PowerModelSpecPowerIbmX3550XeonX5675Test.java

+/*
+ * 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) 2009-2010, The University of Melbourne, Australia
+ */
+
+package org.cloudbus.cloudsim.power.models;
+
+import static org.junit.Assert.assertEquals;
+
+import org.junit.Before;
+import org.junit.Test;
+
+/**
+ * @author		Anton Beloglazov
+ * @since		CloudSim Toolkit 2.0
+ */
+public class PowerModelSpecPowerIbmX3550XeonX5675Test {
+
+	private PowerModel powerModel;
+
+	@Before
+	public void setUp() throws Exception {
+		powerModel = new PowerModelSpecPowerIbmX3550XeonX5675();
+	}
+
+	@Test (expected = IllegalArgumentException.class)
+	public void testGetPowerArgumentLessThenZero() throws IllegalArgumentException {
+		powerModel.getPower(-1);
+	}
+
+	@Test (expected = IllegalArgumentException.class)
+	public void testGetPowerArgumentLargerThenOne() throws IllegalArgumentException {
+		powerModel.getPower(2);
+	}
+
+	@Test
+	public void testGetPower() {
+		assertEquals(58.4, powerModel.getPower(0), 0);
+		assertEquals(58.4 + (98 - 58.4) / 5, powerModel.getPower(0.02), 0);
+		assertEquals(98, powerModel.getPower(0.1), 0);
+		assertEquals(140, powerModel.getPower(0.5), 0);
+		assertEquals(189, powerModel.getPower(0.8), 0);
+		assertEquals(189 + 0.7 * 10 * (205 - 189) / 10, powerModel.getPower(0.87), 0);
+		assertEquals(205, powerModel.getPower(0.9), 0);
+		assertEquals(222, powerModel.getPower(1), 0);
+
+	}
+
+}
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