Register audit for kernel flash_attn_persistent (kernels/attention/flash_attention/flash_persistent.sm_86.cubin)
Registers per thread: 126
Block size: 128
Registers per block: 16128
Static shared memory (KB): 0
Dynamic shared memory: FALSE
Local bytes: 0
Register spill: FALSE
Constant bytes: 416
Theoretical blocks per SM: 4
Warps per SM: 16