Argonne researchers will present several sessions at this workshop chaired by the ALCF’s Scott Parker. Esteban Rangel, Adrian Pope, and Nicholas Frontiere will present work that evaluates the performance portability of a SYCL implementation of a large-scale cosmology application (CRK-HACC) running on GPUs from three different vendors. And Geng Liu, Saumil Patel, Silvio Rizzi, Victor Mateevitsi and Joseph Insley will present a performance evaluation of heterogeneous GPU programming frameworks for hemodynamic simulations.