-#500000 sparse full
-#nb threads times nb iter times nb iter
-1024 523 27 545
-512 449.426 24
-256 440.805 24
-128 456.175 22
-64 472.862 23
-32 830.152 24
-8 2632.78 23
+#500000 sparse full #50000 sparse full
+#nb threads times nb iter times nb iter times nb iter times nb iter
+1024 523 27 545 8.61 16
+512 449.426 24 520 9.27 19
+256 440.805 24 480 7.73 15
+128 456.175 22 560 8.64 21
+64 472.862 23 603 7.84 16
+32 830.152 24 920 11.33 18
+16 1234 24 1870 20.47 21
+8 2632.78 23 3589 35.07 26