B. About the new Version 10

The main new features of the latest ADAPTOR versions are the following ones:

• The HALO library provides support for unstructured shadows and communication schedules.
• HALO library with communication schedules where double indexes are eliminated.
• Scalar variables can be mapped to processors and processor subsets via the ALIGN directive or via the new ADAPTOR specific REPLICATED directive.
• The REPLICATED directive supports the replication of serial data onto processor arrays and processor subsets.
• The SINGLE directive maps serial data to a single processor.
• The LAYOUT directive allows to choose how the processors allocate memory for their local sections. The SHADOW directive, also specified in the HPF 2.0 standard, has been extended to distinguish between exact and minimal sizes of shadow edges. Arrays without explicit mapping (serial data) can now also be shared among all processors.
• ADAPTOR supports block-cyclic distributions, CYCLIC(N) with 1#1, as specified in the HPF 2.0 standard.
• ADAPTOR supports INDIRECT distributions as specified in the HPF 2.0 standard.
• ADAPTOR supports ARBITRARY distributions as specified by Moreira et. al. [MEKN96].
• Arrays can now be distributed onto processor subsets, processor subsets can also be used within the ON directive. This approved extension of the HPF 2.0 standard can also be used with vector subscripts for irregular processor subsets.
• ADAPTOR supports task parallelism as specified in the HPF 2.0 standard. Communication between tasks might be possible by using the array descriptors of non-local arrays (non-portable) or by using the HPF_TASK_LIBRARY.
• Embedded dimensions for an alignment can be used without restrictions.
• ADAPTOR supports the new machine-specific SELECT directive to specify for dimensions of arrays and for loops how they should be handled for vectorization and/or shared memory parallelization.

Furthermore, unstructured communications based on indirect addressing are realized more efficiently.