ECP ST and related team members are encouraged to attend the E4S Hackathon on January 12, 2021. The hackathon will focus on the porting of numerical tools, libraries, and applications to three different GPU architectures — NVIDIA, Intel, AMD — and making them available through Spack. The Spack and E4S teams will be available to answer questions and help ECP software and application developers. The hackathon will be a virtual Zoom based event. The Spack and E4S teams will enable access to a testbed at the University of Oregon featuring the three GPU architectures with a common filesystem for porting and testing.