Examples with Switch org.btrplace.model.view.network.Switch used on opensource projects

Example 11 with Switch

use of org.btrplace.model.view.network.Switch in project scheduler by btrplace.

the class CNetworkTest method defaultTest.

/**
 * Test the instantiation and the creation of the variables.
 *
 * @throws org.btrplace.scheduler.SchedulerException if an error occurs during the solving process (it should not)
 */
@Test
public void defaultTest() throws SchedulerException {
    // New default model
    Model mo = new DefaultModel();
    Mapping ma = mo.getMapping();
    // Create and boot 1 source and 1 destination node
    Node srcNode = mo.newNode(), dstNode = mo.newNode();
    ma.addOnlineNode(srcNode);
    ma.addOnlineNode(dstNode);
    // Attach a network view
    Network net = new Network();
    mo.attach(net);
    // Connect the nodes through a main non-blocking switch using 1 Gbit/s links
    Switch swMain = net.newSwitch();
    int bw = 1000;
    net.connect(bw, swMain, srcNode, dstNode);
    // Create and host 1 running VM on the source node
    VM vm = mo.newVM();
    ma.addRunningVM(vm, srcNode);
    // The VM consumes 6 GiB memory and has a memory intensive workload equivalent to "stress --vm 1000 --bytes 50K"
    int memUsed = 6000, hotDirtySize = 46, hotDirtyDuration = 2;
    double coldDirtyRate = 23.6;
    // 6 GiB
    mo.getAttributes().put(vm, "memUsed", memUsed);
    // 46 MiB
    mo.getAttributes().put(vm, "hotDirtySize", hotDirtySize);
    // 2 sec.
    mo.getAttributes().put(vm, "hotDirtyDuration", hotDirtyDuration);
    // 23.6 MiB/sec.
    mo.getAttributes().put(vm, "coldDirtyRate", coldDirtyRate);
    // Add constraints
    List<SatConstraint> cstrs = new ArrayList<>();
    // We force the migration to go on the destination node
    cstrs.add(new Fence(vm, Collections.singleton(dstNode)));
    // Try to solve using the custom Min MTTR objective for migration scheduling
    ReconfigurationPlan p = new DefaultChocoScheduler().solve(mo, cstrs, new MinMTTRMig());
    Assert.assertNotNull(p);
    // The switch is non-blocking
    Assert.assertEquals(swMain.getCapacity(), Integer.MAX_VALUE);
    // Check the migration path and bandwidth
    MigrateVM mig = (MigrateVM) p.getActions().stream().filter(s -> s instanceof MigrateVM).findFirst().get();
    Assert.assertTrue(net.getRouting().getPath(mig.getSourceNode(), mig.getDestinationNode()).containsAll(net.getLinks()));
    Assert.assertEquals(net.getRouting().getMaxBW(mig.getSourceNode(), mig.getDestinationNode()), bw);
    Assert.assertEquals(mig.getBandwidth(), bw);
    // Check the migration duration computation
    double bandwidth_octet = mig.getBandwidth() / 9, durationMin, durationColdPages, durationHotPages, durationTotal;
    durationMin = memUsed / bandwidth_octet;
    durationColdPages = ((hotDirtySize + ((durationMin - hotDirtyDuration) * coldDirtyRate)) / (bandwidth_octet - coldDirtyRate));
    durationHotPages = ((hotDirtySize / bandwidth_octet) * ((hotDirtySize / hotDirtyDuration) / (bandwidth_octet - (hotDirtySize / hotDirtyDuration))));
    durationTotal = durationMin + durationColdPages + durationHotPages;
    Assert.assertEquals((mig.getEnd() - mig.getStart()), (int) Math.round(durationTotal));
}

Example 12 with Switch

use of org.btrplace.model.view.network.Switch in project scheduler by btrplace.

the class CNetworkTest method testWithSwitchCapacity.

@Test
public void testWithSwitchCapacity() {
    Model mo = new DefaultModel();
    Node n1 = mo.newNode();
    Node n2 = mo.newNode();
    VM v = mo.newVM();
    mo.getMapping().on(n1, n2).run(n1, v);
    ShareableResource mem = new ShareableResource("mem", 10000, 5000);
    Network net = new Network();
    mo.attach(net);
    mo.attach(mem);
    mo.getAttributes().put(v, "memUsed", 10000);
    Switch sw = net.newSwitch(1000);
    net.connect(2000, sw, n1, n2);
    ChocoScheduler s = new DefaultChocoScheduler();
    ReconfigurationPlan p = s.solve(mo, Collections.singletonList(new Fence(v, n2)));
    Assert.assertNotNull(p);
}

Example 13 with Switch

use of org.btrplace.model.view.network.Switch in project scheduler by btrplace.

the class NetworkAndMigrations method run.

@Override
public void run() {
    // 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();
    Node srcNode2 = mo.newNode();
    Node dstNode = mo.newNode();
    ma.addOnlineNode(srcNode1);
    ma.addOnlineNode(srcNode2);
    ma.addOnlineNode(dstNode);
    // Create 4 VMs and host 2 VMs on each source node
    VM vm0 = mo.newVM();
    VM vm1 = mo.newVM();
    VM vm2 = mo.newVM();
    VM vm3 = mo.newVM();
    ma.addRunningVM(vm0, srcNode1);
    ma.addRunningVM(vm1, srcNode1);
    ma.addRunningVM(vm2, srcNode2);
    ma.addRunningVM(vm3, srcNode2);
    // Set VM attributes 'memory used', 'hot dirty page size', 'hot dirty page duration' and 'cold dirty pages rate'
    // vm0 and vm3 are 'idle' VMs (with no special memory activity) but they still consume some memory
    // 2 GiB
    mo.getAttributes().put(vm0, "memUsed", 2000);
    // 2.2 GiB
    mo.getAttributes().put(vm3, "memUsed", 2200);
    // vm1 and vm2 consume memory and have a memory intensive workload equivalent to "stress --vm 1000 --bytes 50K"
    // 8 GiB
    mo.getAttributes().put(vm1, "memUsed", 8000);
    mo.getAttributes().put(vm1, "hotDirtySize", 56);
    mo.getAttributes().put(vm1, "hotDirtyDuration", 2);
    mo.getAttributes().put(vm1, "coldDirtyRate", 22.6);
    // 7.5 GiB
    mo.getAttributes().put(vm2, "memUsed", 7500);
    mo.getAttributes().put(vm2, "hotDirtySize", 56);
    mo.getAttributes().put(vm2, "hotDirtyDuration", 2);
    mo.getAttributes().put(vm2, "coldDirtyRate", 22.6);
    // Add placement constraints: we want to shutdown the source nodes to force VMs migration to destination nodes
    List<SatConstraint> cstrs = new ArrayList<>();
    cstrs.add(new Offline(srcNode1));
    cstrs.add(new Offline(srcNode2));
    // Try to solve as is and show the computed plan
    ReconfigurationPlan p = new DefaultChocoScheduler().solve(mo, cstrs);
    System.out.println(p);
    // Set a default network view and try to solve again
    // connect nodes to a non-blocking switch using 1 Gbit/s links
    Network net = Network.createDefaultNetwork(mo);
    p = new DefaultChocoScheduler().solve(mo, cstrs);
    System.out.println(p);
    // Create and attach a custom network view and try to solve again
    mo.detach(net);
    net = new Network();
    // Connect the nodes through a main non-blocking switch
    // The source nodes are connected with 1Gbit/sec. links while the destination node has 10Gbit/sec. link.
    Switch swMain = net.newSwitch();
    net.connect(1000, swMain, srcNode1, srcNode2);
    net.connect(10000, swMain, dstNode);
    mo.attach(net);
    p = new DefaultChocoScheduler().solve(mo, cstrs);
    System.out.println(p);
    System.out.flush();
}

Example 14 with Switch

use of org.btrplace.model.view.network.Switch in project scheduler by btrplace.

the class CDeadlineTest method testOk.

@Test
public void testOk() 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
    // The destination node have twice the bandwidth of source nodes
    Switch swMain = net.newSwitch();
    net.connect(1000, swMain, srcNode1, srcNode2);
    net.connect(2000, 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));
    // SET A RELATIVE DEADLINE FOR THE MIGRATION OF VM2
    // 90s
    Deadline dead = new Deadline(vm2, "+00:01:30");
    cstrs.add(dead);
    // Solve it using the Min Max Time To Repair Migration scheduling oriented objective
    ReconfigurationPlan p = new DefaultChocoScheduler().solve(mo, cstrs, new MinMTTRMig());
    // It works because 30s is enough to fully migrate vm2
    Assert.assertNotNull(p);
    // Check if the deadline is respected
    Action mig1 = p.getActions().stream().filter(s -> s instanceof MigrateVM && ((MigrateVM) s).getVM().equals(vm1)).findAny().get();
    Assert.assertTrue(mig1.getEnd() <= 90);
    // TODO: use methods on DeadlineChecker to verify that the action terminates at time ?
    Assert.assertTrue(dead.isSatisfied(p));
}

Example 15 with Switch

use of org.btrplace.model.view.network.Switch in project scheduler by btrplace.

the class CPrecedenceTest method testOk.

@Test
public void testOk() 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
    // The destination node have twice the bandwidth of source nodes
    Switch swMain = net.newSwitch();
    net.connect(1000, swMain, srcNode1, srcNode2);
    net.connect(2000, 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));
    // MIGRATE VM2 BEFORE VM1
    Precedence prec = new Precedence(vm2, vm1);
    cstrs.add(prec);
    // Solve it using the Min Max Time To Repair Migration scheduling oriented objective
    ReconfigurationPlan p = new DefaultChocoScheduler().solve(mo, cstrs, new MinMTTRMig());
    Assert.assertNotNull(p);
    // Check if the precedence constraint is respected
    Action mig1 = p.getActions().stream().filter(s -> s instanceof MigrateVM && ((MigrateVM) s).getVM().equals(vm1)).findAny().get();
    Action mig2 = p.getActions().stream().filter(s -> s instanceof MigrateVM && ((MigrateVM) s).getVM().equals(vm2)).findAny().get();
    Assert.assertTrue(mig1.getStart() >= mig2.getEnd());
    // TODO: use methods on PrecedenceChecker to verify that the migrations are in the expected order ?
    Assert.assertTrue(prec.isSatisfied(p));
}