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Showing content from http://www.adaic.org/standards/05rm/html/RM-E.html below:

Distributed Systems

1

This Annex defines facilities for supporting the implementation of distributed systems using multiple partitions working cooperatively as part of a single Ada program. 

2

A

is an interconnection of one or more

(a system resource that has both computational and storage capabilities), and zero or more

(a system resource that has only storage capabilities, with the storage addressable by one or more processing nodes).

3

A

comprises one or more partitions that execute independently (except when they communicate) in a distributed system.

4

The process of mapping the partitions of a program to the nodes in a distributed system is called

.

5

The implementation shall provide means for explicitly assigning library units to a partition and for the configuring and execution of a program consisting of multiple partitions on a distributed system; the means are implementation defined. 

6

An implementation may require that the set of processing nodes of a distributed system be homogeneous.

7

1  The partitions comprising a program may be executed on differently configured distributed systems or on a non-distributed system without requiring recompilation. A distributed program may be partitioned differently from the same set of library units without recompilation. The resulting execution is semantically equivalent.

8

2  A distributed program retains the same type safety as the equivalent single partition program.

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