TestNodes

 Testing Log: 13th Oct - branch: algochange192-7
 Hardware: CPU i5 and Rig : 3x1070s

ChainParams:
============

consensus.nPowDifficultyBombHeight = 32;
consensus.nHeightDiffBombRemoved = 31;

// Equihash 192,7
nEquihashParamsUpdate = 80;
nEquihashNnew = 192;
nEquihashKnew = 7;

// LWMA-1
lwmaActivationHeight = 98;
lwmaAveragingWindow = 120;

Node Config:

```
rpcuser=btcprivaterpc
rpcpassword=password1
rpcallowip=127.0.0.1
txindex=1
testnet=1
daemon=1
server=1
listen=1
gen=1
```

Setup
=========

- Setup a 2 node network, both brand new and connected to each other.
- set gen=1 on node1, and CPU mined the first 17 blocks

21:00 start mining CPU Genesis created

Check - Both nodes syncing blocks up to date. No debug errors.

Block 17
========



 - Bring pool online in 200_9 mode. Connect to pool with 3xGPU and mine with zm_0.6.2.
 - Monitor debug.logs and send some coins around while waiting. Testing existing functionality.

12:26 - Connected GPU's - Blockheight advancing fast. Not unexpected
diff will adjust at 34,51

Block 47 21.31 "difficulty": 199.7494939873795,
Nodes all fine and syncing
Block 51 "difficulty": 219.8296601063969,
Block 67 "difficulty": 301.4836112708453,

Tested shieldcoinbase - Getting bad_alloc with all sheilding operations

block 78 "difficulty": 370.1072137657181,

79



Block 80
========
- Node will start rejecting blocks from the pool

2019-10-13 21:40:47 ERROR: ContextualCheckBlockHeader: incorrect equihash solution size have 1344 need 400
2019-10-13 21:40:47 ERROR: ProcessNewBlock: AcceptBlock FAILED
2019-10-13 21:40:47 HC Falling through at height 80



- Stop pool and Miner and update z-nomp testnet/btcp.json file with following config;

```
    "parameters": {
        "N": 192,
        "K": 7,
        "personalization": "BTCP_PoW"
    },
```
- Start pool
- Start EWBF miner with 1 GPU mining 192_7

21.47 started mining. shielding still failing.

Block 79 "difficulty": 377.3155811442965,


Monitor debug.log - HellCatz kick in?

debug Hellcatz kicked in : 2019-10-13 19:48:55 HC Returning level 3 difficulty 553713663 at height 80
mined 80 on 1 GPU - 2019-10-13 21:49:20

2019-10-13 21:53:20 HC Falling through at height 81



2019-10-13 21:54:21 UpdateTip: new best=0002463ce09ab3bd47ae44759a2e1dea669532ce915bdfb3d48d98ae5082e080  height=81
2019-10-13 21:54:26 UpdateTip: new best=001dc78627e3b7bc8bfb398b0519d6d5087f03d7784d7cdd87a04c3efe9d2fe7  height=82
2019-10-13 21:54:31 UpdateTip: new best=002a12dfed1762f0a50a83bc147da5a8c8c975dcc73e99afdee1c07378c0d79e  height=83
2019-10-13 21:54:45 UpdateTip: new best=006728bb12ddb27109ecc8bb9a50f60076bdfbb424a00d71a4e13f9d6eb7f72f  height=84
2019-10-13 21:56:32 UpdateTip: new best=0032991112bc97be7529e2c18159c5dfc98d4c5b469ce7f87babe660bbb92e19  height=92


.. Ok so blocks are running fast during hellcatz period. Better than slow Ig uess

block 95 "difficulty": 464.3369959314716,
block 96 "difficulty": 469.7454850902982,



Double checked error with shielding as suspected, memory issue.
Not concerned about this as we didnt change any shielding code



Block 97
========
 "difficulty": 496.3010294639687,
2019-10-13 21:59:00 UpdateTip: new best=001312b363e111acdccc613a374d62c26ecd79f67136f5992c877f1cb829abca  height=98


Wait.. what?!


 "difficulty": 1,

 Block 100, 101, 102, 103.. 

 "blocks": 115,
  "timeoffset": 0,
  "connections": 1,
  "proxy": "",
  "difficulty": 1,

  Difficulty not rising. Finishing test. 
  
  
  
  ============================================
  
  
  //if (height > chainparams.LwmaHeight() && height <= chainparams.LwmaHeight() + N) { return powLimit.GetCompact(); }


Commented out the 'give away blocks' code that we left in. As advised by email from Zawy (LWMA)

Restarted test, follows same path. Await 97

..


"blocks": 80,
  "difficulty": 256,


Block 97
========

 "blocks": 97,
  "difficulty": 464.0030976021241,

  LwmaCalculateNextWorkRequired called.. 
Segmentation fault (core dumped) 


New Test

===========

Increase params here so;
- no segfault
- Difficulty has a chance to get higher


        // Equihash 192,7
        nEquihashParamsUpdate = 150;
        nEquihashNnew = 192;
        nEquihashKnew = 7;

        // LWMA-1
        lwmaActivationHeight = 168;
        lwmaAveragingWindow = 120;


Log block timings when we get to 150;

 "difficulty": 998.3623136221809 @ 148


block 149 12:47

*** NOTE: shielding is working after server reboot. \o/

==== Dropped from 3 GPU to 1 GPU and switched ALGP

block 150 & 12.48 "difficulty": 1036.823592319846,. Lucky?

156 : "difficulty": 1161.294601357245, 12:56

168 "difficulty": 1455.525399075559, 13:03

169 13:08   "difficulty": 1484.606665293216,

169 13:08   "difficulty": 1945.627090634321,

"blocks": 170,

Mining continues...