Parallel Multiprojection Preconditioned Methods Based on Subspace Compression

Table 4

Problems from the University of Florida sparse matrix collection.

Problem	Application	Size()	nnz()
atmosmodd	Atmospheric modeling	1270432	8814880
atmosmodl		1489752	10319760
tmt_sym	Electromagnetics problem	726713	5080961
apache2	Structural problem	715176	4817870
Cage14	DNA electrophoresis	1505785	27130349
ecology2	Ecology problem	999999	4995991
thermal2	Thermal problem	1228045	8580313