eProcessor: European, Extendable, Energy-Efficient, Extreme-Scale, Extensible, Processor Ecosystem. - Lluc Alvarez; Abraham Ruiz; Arnau Bigas-Soldevilla; Pavel Kuroedov; Alberto González 004; Hamsika Mahale; Noe Bustamante; Albert Aguilera; Francesco Minervini; Javier Salamero; Oscar Palomar; Vassilis Papaefstathiou; et al. (CF, 2023)