[ANN][GAP] Gapcoin - Prime Gap Search - New Math Algo - CPU / GPU - Zero Premine

[PrimeObsession]

https://chainz.cryptoid.info/gap/#

Hosting for this blockchain has expired since...  2023-01-26

[minerja]

Hi there,

I've tried this a few times now on mint and ubuntu (various versons18,20,22 etc) and never got it working.
If any one can help me get this working i'd love to give it a try.
I'm pretty dumb, so a full step by step guide is needed...

Thanks
J

It transpires that j0nn9 left us “an exercise for the reader” in the GapMiner rev5.1 code, just here:
https://github.com/gapcoin/GapMiner/blob/2f66e908e52dab503de77835f31ac1603b1c23fc/src/HybridSieve.cpp#L398

Code:

sieve_t min_len     = log_str(mpz_get_d(mpz_start)) * d_difficulty;

should read

Code:

sieve_t min_len     = log(mpz_get_d(mpz_start)) * d_difficulty;

The difference was causing GPU builds of the GapMiner rev 5.1 to segfault (on both AMD and nVidia).

I fixed that (along with some other compilation-blockers) and re-worked the Makefile so that it can be used to create either CPU or GPU miners (AMD and nVidia) without having to be edited to do so.

I've cloned gapcoin-project's GapMiner repos here https://github.com/gjhiggins/GapMiner, check out the README for details of how to compile gapminer and gpugapminer on Linux. When I'm satisfied that it works for people, I'll raise a PR on the gapcoin-project GapMiner repos and update that.

Thanks to benxy031 for providing that nVidia-compatible fermat.cl code, I've included it in the gpu subdirectory as fermatnv.cl and adjusted the miner code to load whichever OpenCL source file is compatible with the detected platform.

Cheers

Graham

[gjhiggins]

I've tried this a few times now on mint and ubuntu (various versons18,20,22 etc) and never got it working.
If any one can help me get this working i'd love to give it a try.

What problem are you experiencing? Are you not getting a successful compilation? Does it compile okay but won't run? Does it run but can't connect to client?

Cheers

Graham

[gjhiggins]

https://chainz.cryptoid.info/gap/#

Hosting for this blockchain has expired since...  2023-01-26

Renewed 03-03-2023

[wizz13150]

Hey,

sorry for the delay.

The Gapcoin is definitely CPU friendly.
Mining from the wallet is a good way to get the best hashrate. A 3900x cpu will give you ~3M PPS (mining at shift 25-32). A rx580 gpu will give you ~1.6M PPS (mining at shift 64). It's all an 'efficience' question.
If you're more interested with the Maths behind and the CRT miner (shift 64-1024), feel free to come on Discord ! ((:
I'll give you more information about the different ways to mine the Gapcoin, and the related places, with pleasure.

https://discord.gg/guwJnCEMxq

Also see the Website made by Mr. Higgins :

https://gapcoin-project.github.io/

Cheers !

[DaCryptoRaccoon]

Where had BitcoinFX gone?

Vanished again? 

Keep Gappin lads.

[cryptomaxsun]

no synchronization, no peers.

[minerja]

no synchronization, no peers.

Here you go

10:16:54 getpeerinfo
10:16:54[
{
"addr" : "5.9.193.21:31469",
"services" : "00000001",
"lastsend" : 1705054603,
"lastrecv" : 1705054605,
"bytessent" : 31980,
"bytesrecv" : 237771,
"conntime" : 1705054589,
"pingtime" : 0.00000000,
"version" : 70002,
"subver" : "/Satoshi:0.9.4/",
"inbound" : false,
"startingheight" : 1996766,
"banscore" : 0,
"syncnode" : true
}
]

Fri Jan 12 10:17:28 2024 - 1996769

[BayAreaCoins]

It appears Gapcoin was delisted on https://chainz.cryptoid.info/.  Is there anywhere else to reference a Gapcoin explorer?

[sparkster]

It's sad that such great project is dying. Interesting combination of distributed computing and cryptocurrency. Useful (in some sense) PoW. At least Riecoin still is slightly more alive. And I guess the owner of only existing exchange is some sort of fan of both these math coins, because they are both are still listed here. What a great exchange.

I cannot help GAP in any way. Maybe I can buy some, but without any interest in crypto community, without any update of software, without blockchain explorer, it's all pretty useless. If only some great mind would find this project to support it with some work just for sake of it. Maybe some GAP whale, lol.

Also it seems that 'math guys' for some strange reason are mostly anti-crypto in general, so there is not enough interest from this side. There are some forums about gap merits, but it seems they are not very interested in Gapcoin.

I hope somebody knows how to actually extract data about PoW calculations of network. The difficulty is very low, but amount of time == amount of PoW eventually, and this network is very old, so maybe some new records was hit during such long time? According to Wikipedia, we still have a world record, from year of 2017. At least this is one great thing.

[Penis]

I added the peer list and managed to get my blockchain synced but I only ever get 1 peer connected. Is FreiExchange the only node mining this coin?

[ocminer]

you can use gap.suprnova.cc as a node

[Penis]

you can use gap.suprnova.cc as a node

Unfortunately it seems to be down.

[minerja]

I added the peer list and managed to get my blockchain synced but I only ever get 1 peer connected. Is FreiExchange the only node mining this coin?

Can you please give us the 1 node you have...
Thanks

[Penis]

I added the peer list and managed to get my blockchain synced but I only ever get 1 peer connected. Is FreiExchange the only node mining this coin?

Can you please give us the 1 node you have...
Thanks

The last reliable node on my node list stopped working about 1-2 weeks ago. I'm currently stuck at 14 days behind.

I have 2 laptops on 2 different IPs which I can dedicate to this coin full-time but would rather not fork the chain if it's still chugging along somewhere. Back when I was mining, I had about 70% of the entire network hashrate on my 6 year old laptop so there is a real possibility of forking the chain.

FreiExchange seems to have GAP deposits and withdrawals enabled which implies they are running a node although I haven't tested it.

[wizz13150]

Hey,

I think I was able to get the network unstuck (It was stuck at block 2108793, 3 weeks ago). Also reported on Discord

Add my node by running the following command in the console :

addnode "82.66.203.169" "onetry"

Please use v0.16. Resync if needed.
I'll let 2 nodes running and generate.

Here is a link to download my bootstrap at block 2108806, 9/1/24 04:07 GMT+2 (Paris) :
https://mega.nz/file/tYoijBzC#ynd5Uxa7aZyAao4rl_mb5lwpOv50mYIrOywI0H3NIE8

Please consider using the CRT Miner at higher shifts (128+) if you're more interested in Maths than the coins.
Here is a link with some docs about the CRT Miner :
https://gapcoin-project.github.io/mining/

I can explain and share further on Discord.


Cheers ! 🥂

[BayAreaCoins]

Hey,

I think I was able to get the network unstuck. Also reported on Discord

Add my node by running the following command in the console :

addnode "82.66.203.169" "onetry"

Please use v0.16. Resync if needed. Eventually temporarily ban other v0.9.x peers if needed, while syncing.
I'll let the node run and generate.


Cheers ! 🥂

Very nice, we will give it a try.

[wizz13150]

Hey,

Dumped the results.
Gaps discovered or merits improved: April 13 2022 - September 05 2024 submitted to and accepted by the Prime Gap List
Commit

About previous Gapcoin submissions:
https://gapcoin-project.github.io/category/#primegaplist

48 updates by Gapcoin (merit +37.76) gaps 5366 to 16340
Improved record 5366 merit=27.6860 found by Gapcoin
Improved record 5424 merit=27.9433 found by Gapcoin
Improved record 5596 merit=28.8309 found by Gapcoin
Improved record 5660 merit=29.1477 found by Gapcoin
Improved record 5730 merit=29.5111 found by Gapcoin
Improved record 5754 merit=29.6423 found by Gapcoin
Improved record 5788 merit=29.8209 found by Gapcoin
Improved record 5820 merit=29.9770 found by Gapcoin
Improved record 5858 merit=30.1821 found by Gapcoin
Improved record 5864 merit=30.1330 found by Gapcoin
Improved record 5882 merit=30.2213 found by Gapcoin
Improved record 5930 merit=30.5054 found by Gapcoin
Improved record 5932 merit=29.7763 found by Gapcoin
Improved record 5956 merit=30.6174 found by Gapcoin
Improved record 6082 merit=27.4883 found by Gapcoin
Improved record 6116 merit=27.6592 found by Gapcoin
Improved record 6142 merit=30.8338 found by Gapcoin
Improved record 6284 merit=28.4047 found by Gapcoin
Improved record 6316 merit=31.6752 found by Gapcoin
Improved record 6386 merit=28.8733 found by Gapcoin
Improved record 6402 merit=28.9352 found by Gapcoin
Improved record 6436 merit=29.0973 found by Gapcoin
Improved record 6456 merit=29.1584 found by Gapcoin
Improved record 6466 merit=29.2414 found by Gapcoin
Improved record 6474 merit=29.2781 found by Gapcoin
Improved record 6482 merit=29.2925 found by Gapcoin
Improved record 6484 merit=29.2995 found by Gapcoin
Improved record 6488 merit=29.3422 found by Gapcoin
Improved record 6492 merit=29.3141 found by Gapcoin
Improved record 6540 merit=32.8140 found by Gapcoin
Improved record 6542 merit=29.5386 found by Gapcoin
Improved record 6608 merit=29.8519 found by Gapcoin
Improved record 6628 merit=29.9705 found by Gapcoin
Improved record 6636 merit=29.9815 found by Gapcoin
Improved record 6694 merit=30.1957 found by Gapcoin
Improved record 6710 merit=30.3149 found by Gapcoin
Improved record 6720 merit=30.3502 found by Gapcoin
Improved record 6750 merit=33.8964 found by Gapcoin
Improved record 6766 merit=30.5132 found by Gapcoin
Improved record 6778 merit=30.5780 found by Gapcoin
Improved record 6844 merit=30.8576 found by Gapcoin
Improved record 6870 merit=31.0033 found by Gapcoin
Improved record 6922 merit=31.2146 found by Gapcoin
Improved record 7034 merit=31.7138 found by Gapcoin
Improved record 8144 merit=28.1573 found by Gapcoin
Improved record 8658 merit=29.9311 found by Gapcoin
Improved record 9190 merit=28.6005 found by Gapcoin
Improved record 16340 merit=30.8701 found by Gapcoin

Reminder : To mine with the cpu or gpu miner is pretty much useless/overmined at this point.
The CRT miner is the way to get interesting results :
Download: https://github.com/gapcoin-project/GapMiner/releases/tag/crt-rev5.1
Explanation : https://gapcoin-project.github.io/mining/chinese-remainder-mining/
More informations on discord, just ping @raptoreum (Wizz_^)

Cheers ! 🥂
And thanks everyone to keep Gapcoin alive <3

[wizz13150]

Hey,

3 new improvements :

3 updates by Gapcoin (merit +3.05) gaps 5680 to 27180
Improved record 5680 merit=29.2577 found by Gapcoin
Improved record 23882 merit=26.9184 found by Gapcoin
Improved record 27180 merit=30.6498 found by Gapcoin

Submitted to the PrimeGapList as well.

Cheers ! 🥂

[sparkster]

Any working nodes? Cannot connect to any, 0.16.3 gapcoind. (SOLVED)
Also have learned about NVIDIA fix today, wanna test it.
EDIT: 82.66.203.169 is connected now, but I cannot download any blocks, stuck on 2118350. Tried to start from early state or even from 0, no blocks anyway. (SOLVED somehow)
EDIT2: connected fine now, blockchain is up to date. Any additional nodes are welcome. Today I'm mining some of "rare shifts", so to speak, according to
https://gapcoin-project.github.io/gapgraphs/shiftfrequency/ which is not updated since 2021 it seems. Want more up-to-date data, maybe I should learn how to write some script to automatically receive those data from blockchain. It should be something like getblockcount, then getblockhash, then getblock, check "shift" field, then -1 etc.
And about NVIDIA miner - no luck. Exactly same error as with old fermat.cl. GeForce RTX 3060 12gb. If it only works with 25 shift it is not so needed anyway.
If anybody want to mine, difficulty is very low now. I can try some pretty high shifts and still be over 50%. Well, your GAP does not cost much satoshis, and I'm not sure how stable and united the network is to send your GAP to exchange (big thanks again for exchange, it helps the coin to survive), but it's still fun. Maybe I should buy a little, but I'm too lazy for that. I like to mine more.