On February 19th, the ISC 2019 High Performance research paper committee met in Frankfurt am Main, Germany. 17 out of 72 submissions were selected for publication. Dr.-Ing. Carsten Trinitis served the research paper chair, and the chairholder Prof. Dr. Martin Schulz and our former colleague PD DR. Josef Weidendorfer were also members of the committee. Traditionally, ISC High Performance publishes the first of two yearly updates to the TOP500 supercomputer ranking.