CC5.0 Will bank conflict occur between different warps?

[chicagotyper]

@txbob

No, bank conflicts do not occur between warps. Likewise there is no opportunity for coalescing across different warps. The memory controller(s) deal with coalescing or shared memory on a per-warp-instruction basis. Requests emanating from different “warp-instructions” are not aggregated for the purposing of determining bank conflicts or coalescing behavior.

By the way, there is nothing unique about Maxwell (cc5.0) in this respect. Kepler SM (cc3.x) has multiple schedulers, each of which is capable of dual-issue.

thank you. I avoided the bank conflict in my kernel ,and decrease the operation time by 1/6.