/GRANULARITY

    /GRANULARITY=option
    /GRANULARITY=QUADWORD (D)

 Determines how much memory to effectively cache for memory
 reference by the combination of the compiler and the underlying
 system.  For example, quadword granularity may require that the
 system cache quadword values in registers.  If access to data in
 the same granularity unit occurs simultaneously, corruption (by
 storing back stale values) can occur.

 Granularity has two aspects:  references inside a particular data
 segment and references between data segments.

 The options are:

  o  BYTE

  o  LONGWORD

  o  QUADWORD

 The default is /GRANULARITY=QUADWORD.