It is very instructive to examine the debug output of the engine lc0.
I am giving here an example calculated in my computer but in the following link appears another similar debug output
https://gist.github.com/zz4032/7af71a69 ... a3d27cb0bb
The following output has been obtained with Cutechess doing a tournament between lc0 11261 and Fire 7 with time control 5 minutes and 3 sec starting from the initial position. (GPU GTX 1070 and CPU i7 7700H)
At the first line I highlight time 38 milliseconds, nodes 4 and hashfull 0. For being at the start of the game the nodes have started from 0 (the 4 nodes correspond to the 38 millisecs) and the hash table is empty.
<lc011261(0): info depth 1 seldepth 2 time 38 nodes 4 score cp 16 hashfull 0 nps 105 tbhits 0 pv g1f3 g8f6
<lc011261(0): info depth 1 seldepth 2 time 53 nodes 9 score cp 21 hashfull 0 nps 169 tbhits 0 pv e2e4 c7c5
<lc011261(0): info depth 2 seldepth 3 time 69 nodes 27 score cp -1 hashfull 0 nps 391 tbhits 0 pv e2e3 g8f6 g1f3
<lc011261(0): info depth 2 seldepth 3 time 85 nodes 50 score cp 7 hashfull 0 nps 588 tbhits 0 pv c2c4 c7c5 e2e3
<lc011261(0): info depth 2 seldepth 4 time 101 nodes 77 score cp 9 hashfull 0 nps 762 tbhits 0 pv c2c4 c7c5 e2e3 b8a6
<lc011261(0): info depth 3 seldepth 4 time 131 nodes 157 score cp 12 hashfull 0 nps 1198 tbhits 0 pv c2c4 c7c5 g1f3 g8f6
<lc011261(0): info depth 3 seldepth 5 time 147 nodes 185 score cp 13 hashfull 0 nps 1258 tbhits 0 pv c2c4 c7c5 g1f3 g8f6
<lc011261(0): info depth 3 seldepth 5 time 191 nodes 279 score cp 6 hashfull 1 nps 1460 tbhits 0 pv d2d4 g8f6 c2c4 e7e6 g1f3 b8a6
<lc011261(0): info depth 3 seldepth 6 time 248 nodes 466 score cp 10 hashfull 2 nps 1879 tbhits 0 pv d2d4 g8f6 g1f3 e7e6 c2c4 d7d5
<lc011261(0): info depth 3 seldepth 6 time 287 nodes 584 score cp 13 hashfull 2 nps 2034 tbhits 0 pv c2c4 c7c5 e2e3 g8f6 g1f3
<lc011261(0): info depth 4 seldepth 7 time 320 nodes 680 score cp 13 hashfull 3 nps 2125 tbhits 0 pv d2d4 d7d5 c2c4 e7e6 g1f3 g8f6
<lc011261(0): info depth 4 seldepth 7 time 360 nodes 796 score cp 19 hashfull 3 nps 2211 tbhits 0 pv e2e4 c7c5 g1f3 b8c6 b1c3 g8f6 a1b1
<lc011261(0): info depth 4 seldepth 8 time 400 nodes 924 score cp 19 hashfull 4 nps 2310 tbhits 0 pv e2e4 c7c5 g1f3 b8c6 b1c3 g8f6 d2d4
<lc011261(0): info depth 4 seldepth 9 time 503 nodes 1281 score cp 23 hashfull 6 nps 2546 tbhits 0 pv e2e4 c7c5 g1f3 b8c6 b1c3 g8f6 d2d4
<lc011261(0): info depth 4 seldepth 10 time 590 nodes 1571 score cp 26 hashfull 7 nps 2662 tbhits 0 pv e2e4 c7c5 g1f3 b8c6 b1c3 g8f6 d2d4 a8b8
<lc011261(0): info depth 5 seldepth 10 time 976 nodes 3026 score cp 25 hashfull 13 nps 3100 tbhits 0 pv e2e4 c7c5 g1f3 b8c6 b1c3 g8f6 d2d4 c5d4
<lc011261(0): info depth 5 seldepth 11 time 1431 nodes 4819 score cp 22 hashfull 20 nps 3367 tbhits 0 pv e2e4 c7c5 g1f3 b8c6 b1c3 g8f6 d2d4 c5d4
<lc011261(0): info depth 5 seldepth 12 time 1879 nodes 6611 score cp 19 hashfull 27 nps 3518 tbhits 0 pv e2e4 c7c5 g1f3 b8c6 b1c3 g8f6 d2d4 c5d4
<lc011261(0): info depth 5 seldepth 13 time 2506 nodes 9171 score cp 17 hashfull 37 nps 3659 tbhits 0 pv e2e4 c7c5 g1f3 b8c6 b1c3 g8f6 d2d4 c5d4 a1b1
<lc011261(0): info depth 5 seldepth 14 time 3289 nodes 12499 score cp 14 hashfull 50 nps 3800 tbhits 0 pv e2e4 c7c5 g1f3 d7d6 b1c3 g8f6 d2d4 c5d4 f3d4 g7g6
<lc011261(0): info depth 5 seldepth 15 time 4103 nodes 16083 score cp 15 hashfull 63 nps 3919 tbhits 0 pv e2e4 c7c5 g1f3 d7d6 b1c3 g8f6 d2d4 c5d4 f3d4 g7g6 f1b5
<lc011261(0): info depth 5 seldepth 16 time 4345 nodes 17107 score cp 16 hashfull 67 nps 3937 tbhits 0 pv e2e4 c7c5 g1f3 d7d6 b1c3 g8f6 d2d4 c5d4 f3d4 g7g6 f1b5 c8d7
<lc011261(0): info depth 6 seldepth 16 time 5403 nodes 21433 score cp 19 hashfull 83 nps 3966 tbhits 0 pv e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 e4e5 f6d7 f2f4 c7c5 g1f3 b8c6 c1e3
<lc011261(0): info depth 6 seldepth 17 time 5592 nodes 22202 score cp 19 hashfull 86 nps 3970 tbhits 0 pv e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 e4e5 f6d7 f2f4 c7c5 g1f3 b8c6 c1e3
<lc011261(0): info depth 6 seldepth 18 time 6905 nodes 27839 score cp 20 hashfull 108 nps 4031 tbhits 0 pv e2e4 c7c5 g1f3 b8c6 b1c3 g7g6 d2d4 c5d4 f3d4 f8g7 c1e3 g8f6 f1e2
<lc011261(0): info depth 6 seldepth 19 time 8312 nodes 33987 score cp 20 hashfull 130 nps 4088 tbhits 0 pv e2e4 c7c5 g1f3 d7d6 b1c3 g8f6 d2d4 c5d4 f3d4 g7g6 f1b5 c8d7 b5d7
<lc011261(0): info depth 6 seldepth 19 time 12624 nodes 52956 score cp 18 hashfull 199 nps 4194 tbhits 0 pv e2e4 c7c5 g1f3 d7d6 b1c3 g8f6 d2d4 c5d4 f3d4 g7g6 f1b5 c8d7 b5d7
<lc011261(0): bestmove e2e4 ponder c7c5
lc0 finished the calculation at depth ply 6 and selective depth 19, with hasfull 199 which means 19.9 % of the hash tables filled and played 1.e4
>Fire_7(1): position startpos moves e2e4
>Fire_7(1): isready
<Fire_7(1): readyok
>Fire_7(1): go wtime 290376 btime 300000 winc 3000 binc 3000
<Fire_7(1): info time 114 nodes 320890 nps 2814824 tbhits 0 depth 8 multipv 1 score cp -32 pv e7e5 g1f3 b8c6 b1c3 f8c5 f1b5 c6d4 b5a4
...
<Fire_7(1): info time 9402 nodes 27172080 nps 2890031 tbhits 0 depth 16 multipv 1 score cp -12 pv e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6d7 h2h4 h7h6 g5e3 c7c5 d1g4 e8f8 g1f3
<Fire_7(1): bestmove e7e6 ponder d2d4
>lc011261(0): position startpos moves e2e4 e7e6
>lc011261(0): isready
<lc011261(0): readyok
>lc011261(0): go wtime 290376 btime 293599 winc 3000 binc 3000
After the moves 1.e4 e6, lc0 starts from time 0, nodes 8859 and hashfull 200. The amount of nodes doesn´t start from 0 because lc0 uses the information stored in the hash table and continues from that point.
lc0 started the calculation at depth ply 4 and selective depth 4, less than depth ply 6/19 this happened because the move e6 of Fire was not guessed by lc0, though e6 was analized at depth 6 seldepth 16 and depth 6 seldepth 17.
<lc011261(0): info depth 4 seldepth 4 time 0 nodes 8859 score cp 18 hashfull 200 nps 0 tbhits 0 pv d2d4 d7d5 b1c3 g8f6 e4e5 f6d7 f2f4 c7c5 g1f3 b8c6 c1e3 d8b6 c3a4
<lc011261(0): info depth 6 seldepth 8 time 0 nodes 8860 score cp 18 hashfull 200 nps 0 tbhits 0 pv d2d4 d7d5 b1c3 g8f6 e4e5 f6d7 f2f4 c7c5 g1f3 b8c6 c1e3 d8b6 c3a4
<lc011261(0): info depth 6 seldepth 13 time 71 nodes 9116 score cp 18 hashfull 201 nps 3633 tbhits 0 pv d2d4 d7d5 b1c3 g8f6 e4e5 f6d7 f2f4 c7c5 g1f3 b8c6 c1e3 d8b6 c3a4
<lc011261(0): info depth 6 seldepth 14 time 434 nodes 10549 score cp 21 hashfull 207 nps 3896 tbhits 0 pv d2d4 d7d5 b1c3 g8f6 e4e5 f6d7 c3e2 c7c5 c2c3 b8c6 g1f3 f7f6 e2f4 d8e7
<lc011261(0): info depth 6 seldepth 15 time 2639 nodes 20350 score cp 19 hashfull 242 nps 4354 tbhits 0 pv d2d4 d7d5 e4d5 e6d5 g1f3 g8f6 c2c4 f8b4 b1c3 e8g8 f1e2 c7c5 e1g1
<lc011261(0): info depth 7 seldepth 15 time 4942 nodes 30339 score cp 21 hashfull 279 nps 4346 tbhits 0 pv d2d4 d7d5 e4d5 e6d5 g1f3 g8f6 c2c4 f8b4 b1c3 e8g8 f1e2 c7c5 e1g1
<lc011261(0): info depth 7 seldepth 16 time 6980 nodes 39314 score cp 20 hashfull 311 nps 4363 tbhits 0 pv d2d4 d7d5 e4d5 e6d5 g1f3 g8f6 c2c4 f8b4 b1c3 e8g8 f1e2 c7c5 e1g1
<lc011261(0): info depth 7 seldepth 16 time 11999 nodes 62871 score cp 19 hashfull 390 nps 4501 tbhits 0 pv d2d4 d7d5 e4d5 e6d5 g1f3 g8f6 c2c4 f8b4 b1c3 e8g8 f1e2 c7c5 e1g1 c5d4 f3d4
<lc011261(0): info depth 7 seldepth 17 time 14464 nodes 74413 score cp 18 hashfull 429 nps 4532 tbhits 0 pv d2d4 d7d5 e4d5 e6d5 g1f3 g8f6 c2c4 f8b4 b1c3 e8g8 f1e2 c7c5 e1g1 c5d4 f3d4
<lc011261(0): info depth 7 seldepth 17 time 17552 nodes 88264 score cp 18 hashfull 478 nps 4524 tbhits 0 pv d2d4 d7d5 e4d5 e6d5 g1f3 g8f6 c2c4 f8b4 b1c3 e8g8 f1e2 c7c5 e1g1 c5d4 f3d4 b8c6 c4d5
<lc011261(0): bestmove d2d4 ponder d7d5
lc0 finished the calculation at depth ply 7 and selective depth 17
>Fire_7(1): position startpos moves e2e4 e7e6 d2d4
>Fire_7(1): isready
<Fire_7(1): readyok
>Fire_7(1): go wtime 275824 btime 293599 winc 3000 binc 3000
<Fire_7(1): info time 2 nodes 4356 nps 2178000 tbhits 0 depth 8 multipv 1 score cp -12 pv d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6d7 h2h4
...
<Fire_7(1): info time 13302 nodes 39339735 nps 2957430 tbhits 0 depth 17 multipv 1 score cp -20 pv d7d5 b1d2 g8f6 f1d3 c7c5 e4e5 f6d7 c2c3 b8c6 g1e2 f8e7 d2f3 b7b6 e1g1 c8b7 f1e1 h7h6
<Fire_7(1): bestmove d7d5 ponder b1d2
>lc011261(0): position startpos moves e2e4 e7e6 d2d4 d7d5
After 1.e4 e6 2.d4 d5, lc0 at time 66 millisecs, starts with nodes 27821 and hashfull 480. The amount of nodes doesn´t start from 0 again.
lc0 started the calculation at depth ply 8 and selective depth 14 continuing from the depth 7/17 reached in the previous move probably due to that the move d5 of Fire was guessed by lc0. During the computation the depth varied from 7 to 8 several times
>lc011261(0): isready
<lc011261(0): readyok
>lc011261(0): go wtime 275824 btime 283299 winc 3000 binc 3000
<lc011261(0): info depth 8 seldepth 14 time 66 nodes 27821 score cp 20 hashfull 480 nps 3878 tbhits 0 pv e4d5 e6d5 g1f3 g8f6 c2c4 f8b4 b1c3 e8g8 f1e2 c7c5 e1g1 c5d4 f3d4 b8c6 c4d5
<lc011261(0): info depth 7 seldepth 14 time 188 nodes 28333 score cp 20 hashfull 482 nps 4085 tbhits 0 pv e4d5 e6d5 g1f3 g8f6 c2c4 f8b4 b1c3 e8g8 f1e2 c7c5 e1g1 c5d4 f3d4 b8c6 c4d5
<lc011261(0): info depth 7 seldepth 15 time 773 nodes 30893 score cp 20 hashfull 491 nps 4305 tbhits 0 pv e4d5 e6d5 g1f3 g8f6 c2c4 f8b4 b1c3 e8g8 f1e2 c7c5 e1g1 c5d4 f3d4 b8c6 c4d5
<lc011261(0): info depth 8 seldepth 15 time 997 nodes 31919 score cp 20 hashfull 495 nps 4367 tbhits 0 pv e4d5 e6d5 g1f3 g8f6 c2c4 f8b4 b1c3 e8g8 f1e2 c7c5 e1g1 c5d4 f3d4 b8c6 c4d5
<lc011261(0): info depth 7 seldepth 15 time 1062 nodes 32175 score cp 20 hashfull 496 nps 4340 tbhits 0 pv e4d5 e6d5 g1f3 g8f6 c2c4 f8b4 b1c3 e8g8 f1e2 c7c5 e1g1 c5d4 f3d4 b8c6 c4d5
<lc011261(0): info depth 8 seldepth 15 time 1182 nodes 32687 score cp 19 hashfull 498 nps 4333 tbhits 0 pv e4d5 e6d5 g1f3 g8f6 c2c4 f8b4 b1c3 e8g8 f1e2 c7c5 e1g1 c5d4 f3d4 b8c6 c4d5
<lc011261(0): info depth 7 seldepth 15 time 1310 nodes 33199 score cp 19 hashfull 500 nps 4300 tbhits 0 pv e4d5 e6d5 g1f3 g8f6 c2c4 f8b4 b1c3 e8g8 f1e2 c7c5 e1g1 c5d4 f3d4 b8c6 c4d5
<lc011261(0): info depth 8 seldepth 15 time 1378 nodes 33457 score cp 19 hashfull 501 nps 4275 tbhits 0 pv e4d5 e6d5 g1f3 g8f6 c2c4 f8b4 b1c3 e8g8 f1e2 c7c5 e1g1 c5d4 f3d4 b8c6 c4d5
<lc011261(0): info depth 7 seldepth 15 time 1436 nodes 33713 score cp 19 hashfull 502 nps 4281 tbhits 0 pv e4d5 e6d5 g1f3 g8f6 c2c4 f8b4 b1c3 e8g8 f1e2 c7c5 e1g1 c5d4 f3d4 b8c6 c4d5
<lc011261(0): info depth 8 seldepth 15 time 1486 nodes 33969 score cp 19 hashfull 503 nps 4309 tbhits 0 pv e4d5 e6d5 g1f3 g8f6 c2c4 f8b4 b1c3 e8g8 f1e2 b4c3 b2c3 d5c4 e2c4 f8e8 c1e3
<lc011261(0): info depth 8 seldepth 16 time 2761 nodes 39354 score cp 19 hashfull 523 nps 4269 tbhits 0 pv e4d5 e6d5 g1f3 g8f6 c2c4 f8b4 b1c3 e8g8 f1e2 b4c3 b2c3 d5c4 e2c4 f8e8 c1e3
<lc011261(0): info depth 8 seldepth 16 time 7779 nodes 61575 score cp 18 hashfull 604 nps 4372 tbhits 0 pv e4d5 e6d5 g1f3 g8f6 c2c4 c8e6 b1c3 d5c4 f1e2 b8c6 e1g1 f8e7 d1a4 e8g8
<lc011261(0): info depth 8 seldepth 17 time 12176 nodes 80180 score cp 17 hashfull 674 nps 4321 tbhits 0 pv e4d5 e6d5 g1f3 g8f6 c2c4 c8e6 b1c3 d5c4 f3g5 e6d5 c3d5 d8d5 f1e2 f8b4 e1f1
<lc011261(0): info depth 8 seldepth 17 time 16601 nodes 98634 score cp 17 hashfull 745 nps 4281 tbhits 0 pv e4d5 e6d5 g1f3 g8f6 c2c4 c8e6 b1c3 d5c4 d1a4 c7c6 f1c4 b7b5 c3b5 c6b5 c4b5
<lc011261(0): bestmove e4d5 ponder e6d5