1PetscSF Object: 2 MPI processes 2 type: basic 3 [0] Number of roots=4, leaves=4, remote ranks=2 4 [0] 0 <- (0,0) 5 [0] 1 <- (0,1) 6 [0] 2 <- (1,0) 7 [0] 3 <- (1,1) 8 [1] Number of roots=14, leaves=14, remote ranks=2 9 [1] 0 <- (1,2) 10 [1] 1 <- (1,3) 11 [1] 2 <- (0,2) 12 [1] 3 <- (0,3) 13 [1] 4 <- (1,4) 14 [1] 5 <- (1,5) 15 [1] 6 <- (1,6) 16 [1] 7 <- (1,7) 17 [1] 8 <- (1,8) 18 [1] 9 <- (1,9) 19 [1] 10 <- (1,10) 20 [1] 11 <- (1,11) 21 [1] 12 <- (1,12) 22 [1] 13 <- (1,13) 23 MultiSF sort=rank-order 24==== original V in global ordering. size==18 block size=2 25Vec Object: V 2 MPI processes 26 type: mpi 27Process [0] 280. 290. 300. 310.5 32Process [1] 330.5 340. 351. 360. 370.5 380.5 391. 400.5 410. 421. 430.5 441. 451. 461. 47==== V in natural ordering. size==18 block size=2 48Vec Object: NV 2 MPI processes 49 type: mpi 50Process [0] 510. 520. 530.5 540. 55Process [1] 561. 570. 580. 590.5 600.5 610.5 621. 630.5 640. 651. 660.5 671. 681. 691. 70