PRACE sixth edition of its Scientific and Industrial Conference – PRACE days 19 was part of the EuroHPC Summit Week 2019 (EHPCSW 2019) from 13 to 17 May 2019, in Poznań, Poland. The entire week was organised by PRACE, EXDCI-2 and ETP4HPC. PRACE’s Polish Member, the Poznań Supercomputing and Networking Center (PSNC), hosted the EuroHPC Summit Week. More than 360 participants joined plenary sessions, parallel sessions, and discussions to tackle the important topics facing science, industry and the HPC landscape. To get the spirit of this interesting conference, please read the PRACEdays19 Executive Summary here.