There are 2 repositories under exascale-computing topic.
Efficient Distributed GPU Programming for Exascale, an SC/ISC Tutorial
ENRICO: Exascale Nuclear Reactor Investigative COde
Exascale system and server for Mountios
Parallel Social Data Analytics library for Python
Parallel Social Data Analytics library for Python
UPC version of the ExaGS library developed by The ExaFLOW project which has received funding from the European Union Horizon 2020 Framework Programme (H2020) under grant agreement number 671571