Method _select_renderer

tinygrad/device.py:307–312

(self)

    return r.__name__.upper().removesuffix("RENDERER").removeprefix(devname:=self.device.split(':')[0].upper()) or devname

  def _select_renderer(self) -> Renderer:
    assert (rn:=next((self._renderer_name(r) for r in self.renderers if getenv(f"{self.device}_{self._renderer_name(r)}")), None)) is None, \
      f"{self.device}_{rn}=1 is deprecated, use DEV={self.device}:{rn} or {self.device}_CC={rn} instead"
    t = DEV.target(self.device.split(':')[0], **({"arch":self.arch} if self.arch else {}))
    return select_first_inited(select_by_name(self.renderers, self._renderer_name, t.renderer, f"{self.device} has no renderer {t.renderer!r}"),
                               f"No renderer for {self.device} is available", self.cached_renderer, t)

  def count(self) -> int:
    """