The Knicks announced hours before the game Coach Mike D'Antoni had stepped down in a "mutual decision" with the club. With assistant Coach Mike Woodson running the team, the Knicks crushed the Trail Blazers and ended a six-game losing streak.
Smith made seven from beyond the arc and totaled 23 points. Novak scored 20 points in 20 minutes while hitting six 3-pointers.
The Knicks limited Portland to 29 first-half points while building a 26-point halftime advantage.
Portland fell to 1-4 on a seven-game road trip that has stops left in Chicago and Oklahoma City.