VMS Help FORTRAN, /VECTOR  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  /[NO]VECTOR                     D=/NOVECTOR

  Controls whether the compiler analyzes source code for dependences
  and includes vector instructions in the generated code.

  The default setting is /NOVECTOR.

  /VECTOR does not support /CHECK=BOUNDS and /NOOPTIMIZE.

  The setting of the /VECTOR qualifier affects the default setting
  for the /ASSUME qualifier:

   o  If /NOVECTOR, /ASSUME=(ACCURACY_SENSITIVE,DUMMY_ALIASES)

   o  If /VECTOR, /ASSUME=(ACCURACY_SENSITIVE,NODUMMY_ALIASES)

  The setting of the /VECTOR qualifier does not affect the default
  for the /SYNCHRONOUS_EXCEPTIONS qualifier.