The ExaChallenge Symposium

The ExaChallenge symposium was held on October 17 and 18, 2012 at the IBM Research laboratory in Dublin, Ireland. The symposium brought together a small group of highly qualified exascale computing experts from institutions in the USA and Europe. A unique symposium format allowed the inclusion of all participants in the discussions of the software and managerial challenges laying ahead. These often lively discussions highlighted areas of concern, disagreement about the correct solution, and open questions that need to be addressed before an exascale system can be put into production use. This report summarizes these discussions and findings.