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Mojo function

warpgroup_reg_alloc

def warpgroup_reg_alloc[count: Int]()

Allocates additional registers for the executing warp group.

Hints to the system to increase per-thread registers owned by the executing warp. Requests additional registers to increase the absolute per-thread maximum register count from its current value to the specified count.

Note:

• Only supported on NVIDIA SM90+ GPUs
• Performance optimization hint that may be ignored by the hardware
• Pair with `warpgroup_reg_dealloc() when extra registers are no longer needed

Parameters:

• ​count (Int): The desired number of registers per thread. Must be:
  • A multiple of 8
  • Between 24 and 256 (inclusive).