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);
}
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);
}
}
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