/GRANULARITY[=option ]

  Specifies the minimum size of a memory access.  Use this qualifier
  if different processes sharing memory attempt to update  different
  parts of the same aligned quadword concurrently.

  The option can be one of the following:

           o  BYTE - Used if concurrent processes sharing memory may
                     be  updating different bytes within the same
                     quadword.

           o  LONG - Used if concurrent processes sharing memory may
                     be updating different longwords within the same
                     quadword.

           o  QUAD - (default)  Used for best performance if you are
                     sure that  no concurrent  updates will occur
                     within the same aligned quadword.