HPC 2019 is organized under the patronage of Commissioner Mariya Gabriel, Mrs. Karina Angelieva – Deputy Minister of Education and Science, and Acad. Julian Revalski, President of the Bulgarian Academy of Sciences, by the Department of Parallel Algorithms, Institute of Information and Communication Technologies, Bulgarian Academy of Sciences, in cooperation with HPC & Quantum Technologies Unit at the European Commission, Institute of Mathematics and Informatics,Bulgarian Academy of Sciences, Bulgarian National Center for Supercomputing Applications.