In order to promote the use of High Performance Computing Cluster (HPCC), and share user experience, “HPCC Coral User Forum 2023” organized by ICTO, was held on 19 April 2023. Invited speakers: Prof. Wang San Ming, Prof. Yan Ru, and Prof. Wong Fai, shared their successful research stories and experiences using HPCC. ICTO also introduced new resources and services in HPCC Coral that can support research and academic work.