# cf.CHUNKSIZE

`cf.``CHUNKSIZE`(*size)

  The memory chunk size in bytes for data storage and processing.

  When setting the chunk size, the amount of minimum amount of memory to be kept free as a temporary work space is also updated.

  See also

  `cf.MINNCFM`

  Examples 1: |

      >>> current_chunksize = cf.CHUNKSIZE()

  Parameters: | size: `int`, optional The new chunk size in bytes. The default is to not change the current value.
  Returns: | out: `float` The value prior to the change, or the current value if no new value was specified.
  Examples 2: |

      >>> cf.CHUNKSIZE()
      57095864.32
      >>> old = cf.CHUNKSIZE(2**30)
      >>> cf.CHUNKSIZE(old)
      1073741824
      >>> cf.CHUNKSIZE()
      57095864.32