Evaluating Performance Portability with the CMS Heterogeneous Pixel Reconstruction code oleh Andriotis Nikolaos, Bocci Andrea, Cano Eric, Cappelli Laura, Di Pilato Tony, Ferragina Luca, Hugo Gabrielle, Kortelainen Matti J., Kwok Martin, Olivera Loyola Juan Jose, Pantaleo Felice, Perego Aurora, Redjeb Wahid, Dewing Mark, Esseiva Julien