Coarrays in the next Fortran Standard

摘要

Coarrays will be included in the next Fortran Standard, known informally as Fortran 2008. This is about to be submitted for international ballot as a Draft International Standard (see WG5,2010) and is expected to be published later this year. Only extremely minor changes, such as the correction of typos, are permitted after such a ballot. This article provides an informal description of the core coarray features that will be included. There are plans for further features to be defined in a Technical Report. Only the core set is described here.rnA Fortran program containing coarrays is interpreted as if it were replicated a fixed number of times and all copies were executed asynchronously. Each copy has its own set of data objects and is called an image. The array syntax of Fortran is extended with additional trailing subscripts in square brackets to give a clear and straightforward representation of access to data on other images.