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@nikolayg nikolayg released this 19 Mar 04:06
· 282 commits to master since this release
cloudsim-3.0
fccd0a2

Changes from CloudSim 2.1 to CloudSim 3.0

WHAT'S NEW

  • NEW VM SCHEDULER. VmSchedulerTimeSharedOverSubscription models a scheduler that allows unbounded number of
    VMS to be deployed in a single VM, regardless its requirements in terms of number of MIPS. Notice that this
    was the behaviour of VmSchedulerTimeShared in CloudSim 1.0 Beta, but this behaviour had changed in
    CloudSim 2.0 to accommodate requests with specific amount of MIPS.

  • NEW DATACENTER NETWORK MODEL. A internal network model has been added to CloudSim 3.0. It supports definition
    of switches connecting hosts in arbitrary network topologies. New Vm classes and Cloudlet classes were added to
    take advantage of this feature without breaking compatibility of older code. This new feature also enables
    modelling of message-passing applications. They are included in the package 'network.datacenter'.

  • NEW VM ALLOCATION AND SELECTION POLICIES. 6 new VM allocation and 4 VM selection policies were added to the
    power package. To find more details about the policies please refer to the following paper:

    Anton Beloglazov, and Rajkumar Buyya, "Optimal Online Deterministic Algorithms and Adaptive Heuristics for
    Energy and Performance Efficient Dynamic Consolidation of Virtual Machines in Cloud Data Centers", Concurrency
    and Computation: Practice and Experience, ISSN: 1532-0626, Wiley Press, New York, USA, 2011, DOI: 10.1002/cpe.1867

  • NEW POWER MODELS. 7 power models of real servers using the data from SPECpower were added to the power package.
    They are PowerModelSpecPowerHpProLiantMl110G3PentiumD930, PowerModelSpecPowerHpProLiantMl110G4Xeon3040,
    PowerModelSpecPowerHpProLiantMl110G5Xeon3075, PowerModelSpecPowerIbmX3250XeonX3470, PowerModelSpecPowerIbmX3250XeonX3480,
    PowerModelSpecPowerIbmX3550XeonX5670, and PowerModelSpecPowerIbmX3550XeonX5675.

  • NEW WORKLOAD TRACES. Workload traces from the PlanetLab project were added and used in the examples of the
    power package. The data have originally been provided as a part of the CoMon project, a monitoring infrastructure
    for PlanetLab (http://comon.cs.princeton.edu/).

  • SUPPORT FOR EXTERNAL WORKLOADS. External workloads written in the Standard Workload Format (SWF, from the
    Parallel Workload Archive) can be loaded and read by CloudSim. Relevant classes are WorkloadModel and
    WorkloadFileReader ('util' package).

  • SUPPORT FOR USER-DEFINED END OF SIMULATION. Users are now able to specify a given event that causes the simulaton
    to finish. We thanks Gaston Keller for developing this new feature.

REMOVED CLASSES

  • CloudCoordinator
  • Sensor
  • CloudCoordinator
  • PowerPe
  • Power.PeList

API CHANGES

  • CloudSim.terminateSimulation(long time) was changed to CloudSim.terminateSimulation(double time), to comply
    with clock field of CloudSim class.
  • PowerModel was moved from PowerPe to PowerHost
  • VM allocation policies in the power package were replaced by a completely new implementation.

BUGFIXES AND IMPROVEMENTS

  • Fixed issue 20: HostDynamicWorkload.updateVmsProcessing() throws NullPointerException.
  • Fixed issue 19: CloudSimTags class should be abstract, not final.
  • Fixed issue 17: "Something is wrong, the VM can's be restored" should be an Exception.
  • Fixed issue 16: cloudletsSubmitted in DatacenterBroker should be protected, not private.
  • Fixed issue 15: Simulation failed by the RAM where it should not fail.
  • Fixed issue 14: Rounding problem in VMSchedulerTimeShared.
  • Fixed issue 13: Output error when setDisableMigrations is set to true.
  • Fixed issue 12: Dynamically created space-shared VMs fail to process cloudlets.
  • Fixed issue 11: Wrong sharing of MIs among VMs by VmSchedulerTimeShared.
  • Fixed issue 10: Access modifier of DatacenterBroker::finishExecution().
  • Fixed issue 9: Access modifier of DatacenterBroker::cloudletsSubmitted.
  • Fixed issue 7: Problem in manifests of Maven-generated jar files.
  • Fixed issue 5: Abrupt termination of the simulation caused by VmAllocationPolicySimple.
  • Fixed issue 4: Network examples do not load topology file.
  • Fixed issue 2: Turn the 'future' queue of CloudSim class protected.
  • Fixed issue 1: VM is created without check on host's storage capacity.
  • The power package and corresponding examples were heavily updated, as well as new PlanetLab workload data were added.
  • Fix in Datacenter: one initial update step was been skipped, what caused malfunctions in the schedulers.
  • Fixed issue affecting all CloudletSchedulers: if updated was less then 1, due to a small timespam, processing was
    never updated, because it was always rounded to 0.
  • Datacenter: Fixed problem with very short intervals between events.
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