Matrix loaded from file lap2D_5pt_n100.mtx
N = 10000 
nz = 29800 
val[0] = 4.000000 
Call cgsolver() on matrix size (10000 x 10000)
	[STEP 488] residual = 1.105435E-10
Time for CG (dense solver)  = 3.463315 [s]
[ perf record: Woken up 6 times to write data ]
[ perf record: Captured and wrote 2.739 MB perf.data (338 samples) ]