opendc.git - The OpenDC repository.

Age	Commit message (Collapse)	Author
2022-11-13	refactor: Use InstantSource as time source	Fabian 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`.
2022-10-31	feat(sim/compute): Add support for snapshotting workloads	Fabian Mastenbroek
	This change updates the interface of `SimWorkload` to support snapshotting workloads. We introduce a new method `snapshot()` to this interface which returns a new `SimWorkload` that can be started at a later point in time and on another `SimMachine`, which continues progress from the moment the workload was snapshotted.
2022-10-31	refactor(sim/compute): Report exceptions in onStop as suppressed	Fabian Mastenbroek
	This change updates the implementation of `SimMachineContext` to report exceptions thrown in `onStop` as suppressed exceptions if an exception caused the workload to stop.
2022-10-28	feat(sim/compute): Add support for chaining workloads	Fabian Mastenbroek
	This change adds a new static method `chain` to `SimWorkloads` to chain multiple workloads sequentially.
2022-10-28	feat(sim/compute): Add support for resetting machine context	Fabian Mastenbroek
	This change updates the interface of `SimMachineContext` to allow workloads to reset all resources provided by the machine to the workload. This allows us to implement a `SimWorkload` that can compose multiple workloads.
2022-10-28	refactor(sim/compute): Provide workload constructors in SimWorkloads	Fabian Mastenbroek
	This change introduces a new class SimWorkloads which provides construction methods for the standard workloads available in OpenDC.
2022-10-28	feat(sim/compute): Add completion parameter to startWorkload	Fabian Mastenbroek
	This change updates the interface of `SimMachine#startWorkload` to introduce a parameter `completion` that is invoked when the workload completes either succesfully or due to failure. This functionality has often been implemented by wrapping a `SimWorkload` and catching its exceptions. However, since this functionality is used in all usages of `SimMachine#startWorkload` we instead embed it into `SimMachine` itself.
2022-10-21	perf(sim/compute): Optimize workload implementation of SimTrace	Fabian Mastenbroek
	This change updates the workload implementation of SimTrace by introducing multiple implementations of the FlowStageLogic interface, which is selected dynamically when the workload starts. This change helps eliminate the unecessary division (and memory fetch) when running a workload with just a single CPU.
2022-10-21	refactor(sim/compute): Re-implement using flow2	Fabian 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.