UF Sparse Matrix Collection: IPSO group.

matrix	graph	Group/Name	id	download	# rows	# cols	nonzeros	type	sym	spd?
		IPSO/HTC_336_4438	2534	MAT, MM, RB	226,340	226,340	783,496	real symmetric	yes	no
		IPSO/HTC_336_9129	2535	MAT, MM, RB	226,340	226,340	762,969	real symmetric	yes	no
		IPSO/OPF_10000	2536	MAT, MM, RB	43,887	43,887	426,898	real symmetric	yes	no
		IPSO/OPF_3754	2537	MAT, MM, RB	15,435	15,435	141,478	real symmetric	yes	no
		IPSO/OPF_6000	2538	MAT, MM, RB	29,902	29,902	274,697	real symmetric	yes	no
		IPSO/TSC_OPF_1047	2539	MAT, MM, RB	8,140	8,140	2,012,833	real symmetric	yes	no
		IPSO/TSC_OPF_300	2540	MAT, MM, RB	9,774	9,774	820,783	real symmetric	yes	no

Maintained by Tim Davis, last updated 10-Jun-2015.
Matrix pictures by cspy, a MATLAB function in the CSparse package.
See UFget to download directly into MATLAB.