Examples with ChocoScheduler org.btrplace.scheduler.choco.ChocoScheduler used on opensource projects

Example 46 with ChocoScheduler

use of org.btrplace.scheduler.choco.ChocoScheduler in project scheduler by btrplace.

the class CShareableResourceTest method testInitiallyUnsatisfied.

@Test
public void testInitiallyUnsatisfied() throws SchedulerException {
    Model mo = new DefaultModel();
    Node n1 = mo.newNode();
    Node n2 = mo.newNode();
    ShareableResource rc = new ShareableResource("cpu", 1, 1);
    VM v1 = mo.newVM();
    VM v2 = mo.newVM();
    mo.getMapping().addOnlineNode(n1);
    mo.getMapping().addOnlineNode(n2);
    mo.getMapping().addRunningVM(v1, n1);
    mo.getMapping().addRunningVM(v2, n1);
    mo.attach(rc);
    ChocoScheduler s = new DefaultChocoScheduler();
    try {
        Assert.assertNull(s.solve(mo, new ArrayList<>()));
        Assert.fail("Should have thrown an exception");
    } catch (@SuppressWarnings("unused") SchedulerException e) {
        Assert.assertEquals(s.getStatistics().getMetrics().backtracks(), 0);
    }
}

Example 47 with ChocoScheduler

use of org.btrplace.scheduler.choco.ChocoScheduler in project scheduler by btrplace.

the class CShareableResourceTest method testMisplaced.

@Test
public void testMisplaced() throws SchedulerException {
    Model mo = new DefaultModel();
    Node n1 = mo.newNode();
    Node n2 = mo.newNode();
    ShareableResource rc = new ShareableResource("cpu", 10, 1);
    VM v1 = mo.newVM();
    VM v2 = mo.newVM();
    mo.getMapping().addOnlineNode(n1);
    mo.getMapping().addOnlineNode(n2);
    mo.getMapping().addRunningVM(v1, n1);
    mo.getMapping().addRunningVM(v2, n1);
    mo.attach(rc);
    List<SatConstraint> l = new ArrayList<>();
    l.addAll(Preserve.newPreserve(mo.getMapping().getAllVMs(), "cpu", 5));
    ChocoScheduler s = new DefaultChocoScheduler();
    s.doRepair(true);
    ReconfigurationPlan p = s.solve(mo, l);
    Assert.assertEquals(s.getStatistics().getNbManagedVMs(), 0);
    Assert.assertNotNull(p);
    Assert.assertEquals(p.getResult().getMapping(), mo.getMapping());
    Assert.assertEquals(p.getSize(), 2);
}

Example 48 with ChocoScheduler

use of org.btrplace.scheduler.choco.ChocoScheduler in project scheduler by btrplace.

the class SolverTuning method run.

@Override
@SuppressWarnings("squid:S1166")
public void run() {
    // Make a default model with 500 nodes hosting 3,000 VMs
    Model model = makeModel();
    Set<SatConstraint> constraints = new HashSet<>();
    // We allow memory over-commitment with a overbooking ratio of 50%
    // i.e. 1MB physical RAM for 1.5MB virtual RAM
    constraints.addAll(Overbook.newOverbooks(model.getMapping().getAllNodes(), "mem", 1.5));
    /**
     * On 10 nodes, 4 of the 6 hosted VMs ask now for a 4GB bandwidth
     */
    for (int i = 0; i < 5; i++) {
        Node n = nodes.get(i);
        Set<VM> vmsOnN = model.getMapping().getRunningVMs(n);
        Iterator<VM> ite = vmsOnN.iterator();
        for (int j = 0; ite.hasNext() && j < 4; j++) {
            VM v = ite.next();
            constraints.add(new Preserve(v, "bandwidth", 4));
        }
    }
    ChocoScheduler cra = new DefaultChocoScheduler();
    // Customize the estimated duration of actions
    cra.getDurationEvaluators().register(MigrateVM.class, new LinearToAResourceActionDuration<VM>("mem", 1, 3));
    // We want the best possible solution, computed in up to 5 sec.
    cra.doOptimize(true);
    cra.setTimeLimit(5);
    // We solve without the repair mode
    cra.doRepair(false);
    try {
        solve(cra, model, constraints);
    } catch (@SuppressWarnings("unused") SchedulerException ex) {
    // Just in case the testing environment is not performant enough
    // It does not matter that much if there is no enough time to get a solution here
    }
    // Re-solve using the repair mode to check for the improvement
    cra.doRepair(true);
    solve(cra, model, constraints);
}

Example 49 with ChocoScheduler

use of org.btrplace.scheduler.choco.ChocoScheduler in project scheduler by btrplace.

the class CAmongTest method testContinuousWithAlreadySatisfied.

@Test
public void testContinuousWithAlreadySatisfied() throws SchedulerException {
    Model mo = new DefaultModel();
    VM vm1 = mo.newVM();
    VM vm2 = mo.newVM();
    VM vm3 = mo.newVM();
    VM vm4 = mo.newVM();
    VM vm5 = mo.newVM();
    Node n1 = mo.newNode();
    Node n2 = mo.newNode();
    Node n3 = mo.newNode();
    Node n4 = mo.newNode();
    Mapping map = mo.getMapping().on(n1, n2, n3, n4).run(n1, vm1).run(n2, vm2, vm3).ready(vm4, vm5);
    Set<VM> vms = new HashSet<>(Arrays.asList(vm1, vm2, vm5));
    Collection<Node> s1 = new HashSet<>(Arrays.asList(n1, n2));
    Collection<Node> s2 = new HashSet<>(Arrays.asList(n3, n4));
    Collection<Collection<Node>> pGrps = new HashSet<>(Arrays.asList(s1, s2));
    Among a = new Among(vms, pGrps);
    a.setContinuous(true);
    List<SatConstraint> cstrs = new ArrayList<>();
    cstrs.addAll(Running.newRunning(map.getAllVMs()));
    cstrs.add(a);
    ChocoScheduler cra = new DefaultChocoScheduler();
    ReconfigurationPlan p = cra.solve(mo, cstrs);
    Assert.assertNotNull(p);
}

Example 50 with ChocoScheduler

use of org.btrplace.scheduler.choco.ChocoScheduler in project scheduler by btrplace.

the class CAmongTest method testWithOnGroup.

@Test
public void testWithOnGroup() throws SchedulerException {
    Model mo = new DefaultModel();
    VM vm1 = mo.newVM();
    VM vm2 = mo.newVM();
    VM vm3 = mo.newVM();
    VM vm4 = mo.newVM();
    VM vm5 = mo.newVM();
    Node n1 = mo.newNode();
    Node n2 = mo.newNode();
    Node n3 = mo.newNode();
    Node n4 = mo.newNode();
    Mapping map = mo.getMapping().on(n1, n2, n3, n4).run(n1, vm1).run(n2, vm2).run(n3, vm3).ready(vm4, vm5);
    Set<VM> vms = new HashSet<>(Arrays.asList(vm1, vm2, vm3));
    Collection<Collection<Node>> pGrps = new HashSet<>();
    Set<Node> s = new HashSet<>();
    s.add(n1);
    s.add(n2);
    pGrps.add(s);
    Among a = new Among(vms, pGrps);
    a.setContinuous(false);
    ChocoScheduler cra = new DefaultChocoScheduler();
    List<SatConstraint> cstrs = new ArrayList<>();
    cstrs.addAll(Running.newRunning(map.getAllVMs()));
    cstrs.add(a);
    ReconfigurationPlan p = cra.solve(mo, cstrs);
    Assert.assertNotNull(p);
}