Zoltan2 Version of the Day
Information specifically for developers can be found at Developers' Notes.
Zoltan2 is a complete refactoring of the Zoltan library into C++ in order to support template programming, to scale to larger problems, and to support architecture aware partitioning. This library is currently under active development.
Partitioning functionality that is available now is:
Serial ordering available now is:
Here we describe the typical user interaction with Zoltan2. We use partitioning as an example.
Zoltan2::MeshInput will be available soon.
2. Create a Teuchos::ParameterList with your Zoltan2 parameters. If you are using a third party library (PT-Scotch, ParMetis) you can include a sublist of parameters for this library. See Zoltan2 Parameters for a detailed list of parameterse.
Examples include the following:
Zoltan2 is part of the Trilinos framework and requires several of the other Trilinos libraries to build.
Zoltan2 configuration refers to these CMake directives:
Trilinos_ENABLE_Zoltanif enabled Zoltan2 will build a test that compares the performance of Zoltan1 and Zoltan2
Zoltan2_ENABLE_Experimentalif enabled, code which is still under development will be available for use
ExplicitInstantiation if explicit instantiation is on, all Zoltan2 tests will be compiled with the instantiated types
These are some of the compilation flags used by Zoltan2:
Z2_OMIT_ALL_STATUS_MESSAGESThe debug_level parameter controls the verbosity of status messages. When compiled with this option, the checks for debug_level are bypassed and all status output code is ignored.
Z2_OMIT_ALL_PROFILINGChecks are done at runtime to determine whether any of the memory or timer parameters were set, prior to checking memory in use or to start or stop a ttimer. When compiled with this option, those checks are bypassed.
Z2_OMIT_ALL_ERROR_CHECKINGThe error_check_level parameter controls the amount of error checking done at runtime. When this flag is set, all error checking code is compiled out.