When CYCLES=n is specified, a maximum of n distinct geometry cycles
are allowed. After n cycles, the calculation is stopped in the same manner
as when the allowed time is exceeded. Geometry cycles are (A) cycles of
optimization in EF, SIGMA,
NLLSQ, and BFGS, (B) steps in a FORCE
calculation, and (C) points calculated in an IRC or DRC
calculation.
CYCLES is intended to be an alternative to the T=n.nn keyword,
when platforms of different speeds are being used, particularly in porting. See
also BIGCYCLES.