25 Oct 1999 ======================================= DONLP2 results for the COPS problem set ======================================= Hans Mittelmann (mittelmann@asu.edu) The following results are for problems from COPS: http://www-unix.mcs.anl.gov/~more/cops/ Since only few results were posted there for the NLP code DONLP2 http://plato.la.asu.edu/donlp2.html a number of additional cases were solved by submitting to the NEOS server http://www-neos.mcs.anl.gov/ and thus solving on our implementation of DONLP2 on the DEC-Alpha (21164, 500MHz): pascal.la.asu.edu. In cases marked by R the code was recompiled for different problemsizes. Only the results going beyond those at COPS are listed. Default parameters were used. Largest Small Polygon ===================== ---------------------------------------- | | n = 50 | n = 100 (R) | ---------------------------------------- | CPU(s) | 12.6 | 266 | | f_opt | .7839510733 | .7850588386 | | infeas | 1.59428e-13 | 1.23813e-6 | | iter | 128 | 48 | ---------------------------------------- Shape Optimization of a Cam =========================== ---------------------------------------- | | n = 200 | n = 400 | ---------------------------------------- | CPU(s) | 1434 | 31481 | | f_opt | -855.7831685 | -1714.545354 | | infeas | 4.27625e-4 | 1.16062e-3 | | iter | 699 | 1237 | ---------------------------------------- Linear Tangent Steering ======================= ------------------------------------------------------- | | n = 10 | n = 50 | n = 100 | ------------------------------------------------------- | CPU(s) | .28 | 61 | 617 | | f_opt | .5575751665 | .5556329396 | .5922987341 | | infeas | 3.66982e-8 6.39619e-5 | 5.59022e-5 | | iter | 93 | 242 | 274 | ------------------------------------------------------- Flow in a Channel ================= ---------------------------------------------------------------------- | | n = 40 | n = 100 | n = 200 (R)| n = 400 (R)| ---------------------------------------------------------------------- | CPU(s) | 2.5 | 39 | 371 | 3835 | | f_opt | 1 | 1 | 1 | 1 | | infeas | 1.24785e-12 | 4.11841e-7 | 8.23694e-7 | 1.083519e-11 | | iter | 3 | 3 | 3 | 4 | ---------------------------------------------------------------------- Hang Glider =========== ------------------------------------------------------- | | n = 10 | n = 50 | n = 100 | ------------------------------------------------------- | CPU(s) | 1.7 | 394 | may be | f_opt | 1889.255396 | 1285.531928 | added | | infeas | 3.72491e-12 | 1.55775e-11 | | | iter | 673 | 2039 | | ------------------------------------------------------- Goddard Rocket ============== ---------------------------------------- | | n = 10 | n = 50 | ---------------------------------------- | CPU(s) | 1.8 | may be | | f_opt | 1062.028455 | added | | infeas | 1.62881e-12 | | | iter | 843 | | ----------------------------------------