TRY NOW!
AMPL > >Products > >Solvers > >BLMVM Directives for AMPL

BLMVM Directives for AMPL

To set these directives, assign a string specifying their values to the AMPL option blmvm_options. For example:

ampl: option blmvm_options 'tao_fatol=0.005 tao_max_it=1000';

Directive Name (Default Value): Interpretation

tao_fatol (0.0001): Stop if solution is within this value
tao_frtol (0.0001): Stop if relative solution is within this value
tao_gatol (0.0): Stop if norm of gradient is less than this value
tao_grtol (0.0): Stop if norm of gradient divided by function value is
     less than this value
tao_gttol (0.0): Stop if the norm of the gradient is
     less than the norm of the initial gradient times this value
tao_max_it (10000): Maximum number of iterations
tao_max_funcs (10000): Maximum number of function evaluations
tao_fmin (-1e30): Stop if function is less than this value
tao_lmvm_lm (5): Number of vectors to retain for hessian approximation
tao_monitor (0): If nonzero, then information is displayed at every iteration