Mark Kettenis
Mark Kettenis is a software project scientist at the Joint Institute for VLBI ERIC (JIVE,). In this role they are involved in developing software for the entire data processing chain for high resolution radio interfermetry: from correlator all the way through calibration and imaging. Mark has an engineering degree in Applied Physics from the University Twente and a PhD in Thoretical Physics from the University of Amsterdam and is active in various open source software projects.
Session
In this contribution we present a collection of highly optimized GPU
signal-processing libraries that form the building blocks for a new
generation of radio-astronomical correlator and beam-former
applications. This collection was developed by several partners in
the EU-funded RADIOBLOCKS project. It includes, amongst others a
PolyPhase filter bank, the Tensor-Core Correlator, a Tensor-Core Beam
Former and a VLBI-capable delay correction module. We describe how
recent AI driven GPU hardware developments, as well as developments in
the software ecosystem, have made it possible to achieve significant
improvements in power-efficiency for these building blocks. We
discuss briefly how these "radio blocks" will be deployed in (upgrades
of) correlator/beam-former applications for a variety of radio
telescopes such as LOFAR, the Effelsberg radio telescope, the Irbene
Single Baseline Interferometer (ISBI) and the European VLBI Network
(EVN). Finally we provide some practical examples of the programming
techniques that we've used that could be used in other applications.