ViperEkura
dea59f7e1d
Moving Qa ldmatrix into the tile loop caused warps 0-2 to read warp 3's Q data from sQ (only the last warp's data survives the serialized load loop). Reverted to loading Qa during the init phase and keeping it resident; __launch_bounds__ still forces 128 regs (33% occupancy) with spill to local memory.