GpuFit.alone: def of bend-lint-rules@0.2.0.0
Import: import bend-lint-rules@0.2.0.0/performance/gpu_fit.bend as GpuFit
Lines 199-205 of bend-lint-rules@0.2.0.0/performance/gpu_fit.bend: https://jend.leeeet.dev/read.txt?path=bend-lint-rules@0.2.0.0/performance/gpu_fit.bend&start_line=199&end_line=205

import Base

def alone(+callee: String) -> String:
  callee
    ++ "! runs on one GPU thread, alone: no parallel let runs under "
    ++ callee
    ++ ". GPU: measured 6.5 s for a list walk of BendSR, against 0.08 s without the `!`. CPU (`--gpu off`): 1.6x slower with the `!`. JS: no GPU, so no change. Confidence: high, as one GPU thread is much slower than a CPU core. Remove the `!`, or fork inside "
    ++ callee
    ++ " with a parallel let. If a timing shows the `!` faster here, expect this finding."

Uses (2):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String.append