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

Example 81 with ChocoScheduler

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

the class CSyncTest method testKo.

@Test
public void testKo() throws SchedulerException {
    // New default model
    Model mo = new DefaultModel();
    Mapping ma = mo.getMapping();
    // Create and boot 2 source nodes and 1 destination node
    Node srcNode1 = mo.newNode(), srcNode2 = mo.newNode(), dstNode = mo.newNode();
    ma.addOnlineNode(srcNode1);
    ma.addOnlineNode(srcNode2);
    ma.addOnlineNode(dstNode);
    // Attach a network view
    Network net = new Network();
    mo.attach(net);
    // Connect the nodes through a main non-blocking switch with 1 Gbit/s links
    Switch swMain = net.newSwitch();
    net.connect(1000, swMain, srcNode1, srcNode2);
    net.connect(1000, swMain, dstNode);
    // Create and host 1 VM per source node
    VM vm1 = mo.newVM();
    VM vm2 = mo.newVM();
    ma.addRunningVM(vm1, srcNode1);
    ma.addRunningVM(vm2, srcNode2);
    // Attach CPU and Mem resource views and assign nodes capacity and VMs consumption
    int mem_vm = 8, cpu_vm = 4, mem_src = 8, cpu_src = 4, mem_dst = 16, cpu_dst = 8;
    ShareableResource rcMem = new ShareableResource("mem", 0, 0), rcCPU = new ShareableResource("cpu", 0, 0);
    mo.attach(rcMem);
    mo.attach(rcCPU);
    // VMs
    rcMem.setConsumption(vm1, mem_vm).setConsumption(vm2, mem_vm);
    rcCPU.setConsumption(vm1, cpu_vm).setConsumption(vm2, cpu_vm);
    // Nodes
    rcMem.setCapacity(srcNode1, mem_src).setCapacity(srcNode2, mem_src).setCapacity(dstNode, mem_dst);
    rcCPU.setCapacity(srcNode1, cpu_src).setCapacity(srcNode2, cpu_src).setCapacity(dstNode, cpu_dst);
    // Set VM attributes 'memory used', 'hot dirty page size', 'hot dirty page duration' and 'cold dirty pages rate'
    int vm_mu = 6000, vm_mds = 46, vm_mdd = 2;
    double vm_cdr = 23.6;
    // vm1 is an 'idle' VM (with no special memory activity) but still consumes 6 GiB of memory
    mo.getAttributes().put(vm1, "memUsed", vm_mu);
    // vm2 consumes 6 GiB memory and has a memory intensive workload equivalent to "stress --vm 1000 --bytes 50K"
    // VM with a workload
    mo.getAttributes().put(vm2, "memUsed", vm_mu);
    mo.getAttributes().put(vm2, "hotDirtySize", vm_mds);
    mo.getAttributes().put(vm2, "hotDirtyDuration", vm_mdd);
    mo.getAttributes().put(vm2, "coldDirtyRate", vm_cdr);
    // Create constraints
    List<SatConstraint> cstrs = new ArrayList<>();
    // Placement constraints, we want to shutdown the source nodes to force the migration to destination nodes
    cstrs.add(new Offline(srcNode1));
    cstrs.add(new Offline(srcNode2));
    // TRY TO SYNCHRONIZE THE TWO MIGRATIONS
    Sync sync = new Sync(vm1, vm2);
    cstrs.add(sync);
    // Solve it using the Min Max Time To Repair Migration scheduling oriented objective
    ChocoScheduler sched = new DefaultChocoScheduler();
    ReconfigurationPlan p = sched.solve(mo, cstrs, new MinMTTRMig());
    // Unable to sync two migrations on the same path !
    Assert.assertNull(p);
}

Example 82 with ChocoScheduler

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

the class Bench method solve.

private static void solve(LabelledInstance i, Parameters ps) throws IOException {
    ChocoScheduler s = new DefaultChocoScheduler().setParameters(ps);
    String status = "OK";
    try {
        s.solve(i);
    } catch (@SuppressWarnings("unused") UnstatableProblemException ex) {
        status = "TO";
    } catch (@SuppressWarnings("unused") SchedulerException ex) {
        status = "FAIL";
    }
    if (opts.single()) {
        out(0, "%s%n", s.getStatistics());
    } else {
        SolvingStatistics stats = s.getStatistics();
        if (stats.getSolutions().isEmpty()) {
            status = "KO*";
        } else {
            status = "OK";
            if (stats.completed()) {
                status += "*";
            }
        }
        if (opts.verbosity() == 0) {
            out(0, "%s: %s%n", i.label, status);
        } else {
            out(1, "----- %s -----%n", i.label);
            out(1, "%s%n", stats);
            out(1, "%n");
        }
        File output = opts.output();
        store(i, stats, output);
    }
}