Simultaneous release of PREESM, DFTools and Graphiti

We just released version 1.1.0 of PREESM, version 1.1.0 of DFTools and version 1.3.12 of Graphiti. You can find these new versions on our update site.

PREESM v1.1.0

New features (under the form of new PREESM workflow tasks):

  • Generation of C++ code from a PiMM model. The generated code build an PiSDF graph equivalent to the model when executed. Generation is done by the org.ietr.preesm.experiment.pimm.cppgenerator.scala.PiMMCppGenerationTask plug-in.
  • Connection of subgraphs of a PiMM model to obtain a fully connected model (i.e., where refinement files are replaced by connections between objects). Connection is done by the org.ietr.preesm.experiment.pimm.subgraph.connector.SubgraphConnectorTask plug-in.
  • Optimization of IBSDF graphs. The graphs are cleaned from useless vertices in order to reduce their size and speed up following tasks of the workflow. Optimization is done by the org.ietr.preesm.algorithm.optimization.AlgorithmOptimizationTask plug-in.
  • Export of IBSDF graphs to SDF For Free (SDF3) xml format. Export is done by the org.ietr.preesm.algorithm.exportSdf3Xml.Sdf3Exporter plug-in.

+ Minor performance improvement in MEG addEdge operation.

DFTools v1.1.0

New features:

  • Hierarchy flattening and single-rate transformation automatically add a new port for each fifo to special vertices (fork/join/broadcast/roundbuffer).
  • New port modifier: “unused”.
  • Hierarchy flattening and single-rate transformation automatically add port modifiers to most special vertices
  • (fork/join/broadcast/roundbuffer).

Bugs fixed:

  • Insertion of edges with the wrong production rate, provoking non-schedulable graph errors (see issue#3 of preesm repository).
  • Wrong BRV computation on unconnected actors.
  • Wrong BRV computationwith implicit interfaces.
  • Ports of Broadcast and RoundBuffer vertices were not cloned correctly.

Graphiti v1.3.12

Code refactoring.

Updated:

You May Also Enjoy

Preesm 3.16.0 and Spider 1.6.0

We have just released Preesm version 3.16.0 and Spider 1.6.0. These new versions enable the use of Apollo in the generated code. Dynamic code generated with Prees 3.16.0 and later requires Spider runtime 1.6.0 or later. Preesm 3.16.0 also introduces first prototype of an energy aware scheduler. Full list of changes is available in the release notes.

Preesm 3.15.0 and Spider 1.5.0

We have released Preesm version 3.15.0. Starting with this release, the workflow executor now throws warning when executing a task marked as deprecated. If the property “Error on warnings” is set to true (see this post), existing workflows will have a different behavior. Full list of changes is available in the release notes. This new version also come with Spider codegen updates, requiring the update of the Spider runtime to 1.5.0.

Preesm 3.11.0 and S-LAM Hardware ID

We have released Preesm version 3.11.0. This new release introduces a new property for the component instances of the S-LAM architecture model. This integer property hardwareID links the component instance to the processor ID as listed by the OS running the application.

Preesm 3.8.1 and Thread Exit Control

We have released Preesm version 3.8.1. The main change consist in the renaming of the global variable that controls how the application exits. This variable used to be stopThreads and is now prefixed with preesm to give preesmStopThreads. This update requires the user applications to reflect this change. To have an idea of the impact, you can have a look at our updated application repository.