code: def get_arch_string():
      r'''
      Check local or remote system arch, to produce TaskCluster proper link.
      '''
      rc, stdout, stderr = exec_command('uname -sm')
      if rc > 0:
          raise AssertionError('Error checking OS')
  
      stdout = stdout.lower().strip()
      if not 'linux' in stdout:
          raise AssertionError('Unsupported OS')
  
      if 'armv7l' in stdout:
          return 'arm'
  
      if 'x86_64' in stdout:
          nv_rc, nv_stdout, nv_stderr = exec_command('nvidia-smi')
          nv_stdout = nv_stdout.lower().strip()
          if 'NVIDIA-SMI' in nv_stdout:
              return 'gpu'
          else:
              return 'cpu'
  
      raise AssertionError('Unsupported arch:', stdoutf get_arch_string():
      r'''
      Check local or remote system arch, to produce TaskCluster proper link.
      '''
      rc, stdout, stderr = exec_command('uname -sm')
      if rc > 0:
          raise AssertionError('Error checking OS')
  
      stdout = stdout.lower().strip()
      if not 'linux' in stdout:
          raise AssertionError('Unsupported OS')
  
      if 'armv7l' in stdout:
          return 'arm'
  
      if 'x86_64' in stdout:
          nv_rc, nv_stdout, nv_stderr = exec_command('nvidia-smi')
          nv_stdout = nv_stdout.lower().strip()
          if 'NVIDIA-SMI' in nv_stdout:
              return 'gpu'
          else:
              return 'cpu'
  
      raise AssertionError('Unsupported arch:', stdout)
docs: r'''
      Check local or remote system arch, to produce TaskCluster proper link.