ampl: option lancelot_options 'cauchy=1 timing=1 outlev=1';
cauchy 1 = exact Cauchy point, 0 = approx.
ctol tol. for maxnorm(constraint violation); default 1e-5
firstc constraint tol. for multiplier estimates; default .1
firstg projected grad. tol. for multiplier estimates; default .1
groups 1 = find group structure
gtol tol. for maxnorm(Lagrangian gradient); default 1e-5
imeth method for solving linear system (default 8):
1 = CG (no preconditioner)
2 = diagonal precond. CG
4 = expanding-band precond. CG
5 = Munksgaard's precond. CG
6 = Schnabel-Eskow modified Cholesky precond. CG
7 = Gill-Murray-Ponceleon-Saunders mod. Chol. precond. CG
8 = band matrix precond. CG (default)
11 = multifrontal direct
12 = modified multifront direct
lincmax max increment to liwk and lwk
liwk length of IWK
lwinc increment to default work-array lengths
lwk length of WK
maxfwd # of partials to forward recur; default 5
maxit maximum iterations; default 1000
mu initial penalty parameter; default .1
mutol max. mu value for updating Lagrange multipliers; default .1
objno objective number (1 = first)
objscale scale factor for objective
outlev printing: 0 = none; 1-6 = successively more
pfreq print every pfreq iterations (default 1)
pstart iteration to start printing (default 0)
pstop iteration to stop printing (default 1000000)
qmin 2 = min. quad. model loosely; 1 = tightly
radius initial trust radius; default -1
sbw semi-bandwith for preconditioners; default 5
sdkind Hessians: 0 = anal.; 1 = BFGS, 2 = DFP, 3 = PSB, 4 = SR1
solmsg 1 = echo solution msg, 0 = do not
timing report I/O and solution times: 1 = stdout, 2 = stderr, 3 = both
trtype trust-region type: 2 = box, 1 = spherical
wantsol solution report without -AMPL: sum of
1 ==> write .sol file
2 ==> print primal variable values
4 ==> print dual variable values
8 ==> do not print solution message
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