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2024-01-08refactored opendc-experiment-compute (#190)Dante Niewenhuis
* removed experiment-compute and integrated all components into opendc-compute * updated workflow gradle file * removed unneeded code
2023-12-14Updated tests to run successfully (#187)Dante Niewenhuis
* made sure all tests run * fixed typo * executed spotlessApply * added back web-server tests * updated SimTraceWorkloadTest * commented CapelinRunneer and GreenifierRunner tests * commented one SimTraceWorkloadTest * altered codecov execution * changed codecov
2023-11-21updaded output format of parquet exporterDante Niewenhuis
2023-11-15fixed a problem with the Loggers by copying the dataDante Niewenhuis
2023-11-14Updated TraceReader, Simulation now continues until all tasks are doneDante Niewenhuis
2023-11-14added locks to spawned serversDante Niewenhuis
2023-11-10added greenifier demo, fixed HostTableReaderDante Niewenhuis
2022-11-27refactor(compute/service): Do not split interface and implementationFabian Mastenbroek
This change inlines the implementation of the compute service into the `ComputeService` interface. We do not intend to provide multiple implementations of the service. In addition, this approach makes more sense for a Java implementation.
2022-11-13refactor: Replace use of CoroutineContext by DispatcherFabian Mastenbroek
This change replaces the use of `CoroutineContext` for passing the `SimulationDispatcher` across the different modules of OpenDC by the lightweight `Dispatcher` interface of the OpenDC common module.
2022-11-13refactor: Use InstantSource as time sourceFabian Mastenbroek
This change updates the modules of OpenDC to always accept the `InstantSource` interface as source of time. Previously we used `java.time.Clock`, but this class is bound to a time zone which does not make sense for our use-cases. Since `java.time.Clock` implements `java.time.InstantSource`, it can be used in places that require an `InstantSource` as parameter. Conversion from `InstantSource` to `Clock` is also possible by invoking `InstantSource#withZone`.
2022-11-04refactor: Use RandomGenerator as randomness sourceFabian Mastenbroek
This change updates the modules of OpenDC to always accept the `RandomGenerator` interface as source of randomness. This interface is implemented by the slower `java.util.Random` class, but also by the faster `java.util.SplittableRandom` class
2022-10-28feat(compute/sim): Model host boot timeFabian Mastenbroek
This change updates `SimHost` to support modeling the time and resource consumption it takes to boot the host. The boot procedure is modeled as a `SimWorkload`.
2022-10-28refactor(compute/sim): Use workload chaining for boot delayFabian Mastenbroek
This change updates the implementation of `SimHost` to use workload chaining for modelling boot delays. Previously, this was implemented by sleeping 1 millisecond using Kotlin coroutines. With this change, we remove the need for coroutines and instead use the `SimDurationWorkload` to model the boot delay. In the future, we envision a user-supplied stochastic boot model to model the boot delay for VM instances.
2022-10-21refactor(sim/compute): Re-implement using flow2Fabian Mastenbroek
This change re-implements the OpenDC compute simulator framework using the new flow2 framework for modelling multi-edge flow networks. The re-implementation is written in Java and focusses on performance and clean API surface.
2022-10-10fix(compute/service): Expose number of registered serversFabian Mastenbroek
This change updates the compute service telemetry to also expose the number of servers that are registered with the service.
2022-10-06build: Switch to Spotless for formattingFabian Mastenbroek
This change updates the build configuration to use Spotless for code formating of both Kotlin and Java.
2022-10-06style: Eliminate use of wildcard importsFabian Mastenbroek
This change updates the repository to remove the use of wildcard imports everywhere. Wildcard imports are not allowed by default by Ktlint as well as Google's Java style guide.
2022-10-03refactor(exp/compute): Remove Topology interfaceFabian Mastenbroek
This change removes the Topology interface from the `opendc-experiments-compute` module, which was meant for provisioning the experimental topology. Howerver, with the stateless `HostSpec` class, it is not needed to resolve the topology everytime.
2022-10-03refactor(exp/compute): Integrate compute workload classesFabian Mastenbroek
This change integrates the classes from the old `opendc-compute-workload` module into the `opendc-experiments-compute` module. This new module contains helper classes for setting up experiments with the OpenDC compute service.
2022-10-03feat(exp/compute): Add provisioners for compute serviceFabian Mastenbroek
This change adds a new module `opendc-experiments-compute` that provides provisioner implementations for experiments to use for setting up the compute service of OpenDC and provisioning (simulated) hosts.