before parfor tid: -1, tid address: 0x7ffc0a629380
before parfor i: 0, i address: 0x7ffc0a629384
tid: 0, tid address: 0x7ffc0a628f00
tid: 1, tid address: 0x2b31809f5980
tid: 2, tid address: 0x2b3180df6a00
tid: 3, tid address: 0x2b31811f7a00
after parfor tid: -1, tid address: 0x7ffc0a629380
time for sequential lab3d is 1.57825
first loop, 0
first loop, 1
first loop, 2
first loop, 3

second loop, 0
second loop, 1
second loop, 0
second loop, 2
second loop, 3
second loop, 1
second loop, 2
second loop, 3
third loop, 0
third loop, 0
third loop, 2
third loop, 3
third loop, 1