XcalableACC, XACC for short, is an extension of XMP for accelerator clusters by using OpenACC. Programmers can develop an application for accelerator clusters to insert XMP and OpenACC directives into a sequential program.
Version 1.0 (Jun. 26. 2017)
The souce code of the specification is available from GitHub/XcalableMP/XACC-Specification.