Register audit for kernel flash_attn_v2_persistent_pad (kernels/attention/flash_attention/flash_v2_persistent_pad.sm_86.cubin)
Registers per thread: 134
Block size: 128
Registers per block: 17152
Static shared memory (KB): 0
Dynamic shared memory: FALSE
Local bytes: 0
Register spill: FALSE
Constant bytes: 416
Theoretical blocks per SM: 3
Warps per SM: 12