Each panel below is one half-wave: 32 lanes (rows) x 32 banks (columns).
Colour encodes what happens when the lanes issue one LDS instruction:
distinct bank = OK,
same bank + same slot = broadcast OK,
same bank + different slots = N-way conflict.
1 lane on this bank (OK)N lanes, 1 slot (broadcast OK)N lanes, >1 slot (CONFLICT)