New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

WIP: Fix N-Queens Constraints for Antidiagonals, Performance Improvements #350

Open

EthanJamesLew wants to merge 1 commit into coin-or:master from EthanJamesLew:bugfix/test-nqueens

EthanJamesLew commented May 6, 2023 •

edited

Summary

fixed constraints as seen in issue Incorrect n-Queens Constraints? #344
remove nested double loop to speed up model generation

TODO

add assertions
run comparison of model performance improvements


          change antidiagonal index (coin-or#344), remove nested double loop

7ffdacf

CLAassistant commented May 6, 2023 •

edited

All committers have signed the CLA.

Author

EthanJamesLew commented May 6, 2023

Comparisons

	Board Size [s]	Solver	Previous Time [s]	New Time [s]	Multiplier
0	100	pulp	0.2395	0.1014	2.36193
1	200	pulp	1.5038	0.3815	3.94181
2	300	pulp	5.108	0.955	5.34869
3	400	pulp	12.218	1.6884	7.23644
4	500	pulp	23.3355	2.5825	9.03601
5	600	pulp	40.4356	4.0757	9.92114
6	700	pulp	67.414	5.7228	11.7799
7	800	pulp	99.4078	7.5092	13.2381
8	900	pulp	143.113	9.6846	14.7774
9	1000	pulp	194.24	12.1774	15.9509

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment