at 4096 lanes per call, across the set of proposed operations we see a wallclock speedup of 11.7x-47.6x for 64-bit integers and 10.3x-45.1x for 128-bit integers. the proposed cost model results in a 6.1x-20.0x reduction in cu consumption for 64-bit operations and an 11.1x-60.5x reduction for 128-bit operations