About warp scheduller in one SM

[spring_wind]

If I write a CUDA program which include 1024 threads per block, that is 32 warps, I have two questions:
Q1: For a specific thread, for example, thread#0, once it is allocated to a warp#0, will it be changed to another warp in these 32 warps?
Q2: For a specific warp, is it possible to schedule this warp between SMSPs in one SM?

[Robert_Crovella]

@spring_wind

For a specific thread, for example, thread#0, once it is allocated to a warp#0, will it be changed to another warp in these 32 warps?

no, thread assignment to warps is always static and fixed.

@spring_wind

For a specific warp, is it possible to schedule this warp between SMSPs in one SM?

Generally, no. The assignment of warps to SMSP is done statically at the moment a threadblock is assigned to a SM, and thereafter does not change. In the event of preemption, there may be an exception here. I don’t know for sure about that case, and I’m not aware of detailed preemption behavior being documented anywhere.