code: def bm_sample_pdf() -> None:
      backends = ["python_cuda", "cuda", "python_cpu", "cpu"]
  
      kwargs_list = []
      sample_counts = [64]
      batch_sizes = [1024, 10240]
      bin_counts = [62, 600]
      test_cases = product(
          backends, sample_counts, batch_sizes, bin_counts
      )
      for case in test_cases:
          backend, n_samples, batch_size, n_bins = case
          kwargs_list.append(
              {
                  "backend": backend,
                  "n_samples": n_samples,
                  "batch_size": batch_size,
                  "n_bins": n_bins,
              }
          )
  
      benchmark(
          TestSamplePDF.bm_fn, "SAMPLE_PDF", kwargs_list, warmup_iters=1
      )
  
label_desc: Use image node_id 1 for calling a global function with example usage: bm_sample_pdf() without return types