code: def ndarray_matmul_float64_benchmark():
      arr = (
          hl.nd.arange(1024 * 1024)
          .map(hl.float64)
          .reshape((1024, 1024))
      )
      hl.eval(arr @ arr)
  
file_path: hail/benchmark/python/benchmark_hail/run/linalg_benchmarks.py
imports: import hail
  from .utils import benchmark, recursive_delete
label_desc: Use image node_id 5 for calling a global function with example usage: ndarray_matmul_float64_benchmark() without return types