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## Migration Tools

The migration tools in the Zoltan library perform communication necessary for data migration in the application. The routine Zoltan_Migrate calls application-registered packing routines to gather data to be sent to other processors. It sends the data using the unstructured communication package. It then calls application-registered unpacking routines for each imported object to add received data to the processor's data structures. See the Zoltan User's Guide for more details on the use of and interface to the migration tools.

In future releases, the migration tools will be updated to use MPI data types to support heterogeneous computing architectures.

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