The Mark Weiser Award was created in 2001 by ACM SIGOPS, to be given to an individual who has demonstrated creativity and innovation in operating systems research. The award is named in honor of Mark Weiser, a computing visionary recognized for his research accomplishments during his career at Xerox PARC. The award committee for 2020 consisted of Robert Morris, Andrea Arpaci-Dusseau, and YY Zhou.
From the nominations letters:
The award was announced on Tuesday, November 5th, in the ACM SIGOPS Award Ceremony at OSDI 2020.