The superfinal of the 9th seasons of the Top Chess Engine Competition (or TCEC, which was also the initialism for its original name, the Thoresen Chess Engines Competition) starts one hour after the beginning of the Carlsen-Karjakin match. It will run a wee bit longer though - it's a best-of-100 contest between the latest iterations of Stockfish and Houdini for computer chess supremacy...at least until season 10 starts sometime next year.
The website for all the action is, as usual, this one.
Also, as some of you know the TCEC crew ran a rapid event with all the season 9 engines after the penultimate stage fo the main event, and the big three - Houdini, Komodo, and Stockfish all went undefeated and went 1-2-3, with Houdini the surprise winner with an enormous score of 56/62. Komodo took second with 53 points, and Stockfish finished a further half a point behind.