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Head to Head test of CoolMiner 1.3 Vs ccminer 2.2.5

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Hash rate numbers are vanity metrics and can be gamed.  The only thing I care about is "which miner puts more coins in my wallet?" I've done dozens of Head to Head tests in the past see: https://bitcointalk.org/index.php?topic=3385643.0

I've decided to test CoolMiner 1.3 Vs ccminer 2.2.5 to see which one mines more coins.

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The Setup:
I use a 12 GPU 1080Ti rig on Windows 10, split into three mining instances of 4 GPU's each (for this test, only two of the instances are used). All three mining instances are balanced to get as close to the same hash rate as possible.
Each mining instance is running at the same time on the same machine mining on the same pool.

Overclock settings: 100% TDP, +75 core, -502 mem
Intensity: miner default (CoolMiner: 16, ccminer: 22)
Drivers: Nvidia 397.93

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Results: IN PROGRESS

• [CoolMiner 1.3]  REAL TIME - Pool Link
• [ccminer 2.2.5]  REAL TIME - Pool Link

@Ryzen2700x I realized that too... If there was a cheating miner like I think, he maybe trying to hide his exploit so the issue stays unaddressed for future abuses.

Also this article appeared durind the night (but it is not an effective change yet, it will happen when MTP will release):
https://zcoin.io/reducing-zcoins-block-time/

I wish real and present issues like this weren't swept under the rug... Bad luck? For months? What's happening?

the 7h average hashrate was 28.7mh/s for 8*1080ti and i was doing 27.8mh/s before with 2.2.5, so overall real increase is 3%

GPU operate in a "batch" mode.  They start hashing and attempt so many hashes before stopping to return results.  The higher the intensity the more hashes the card attempts in one batch but also the longer the batch takes.  The card only returns results at the end of the batch.  The higher the intensity (and longer the batch) the more shares which are computed but never "delivered" before the block changes and they become stale.  On the other hand the lower the intensity the more of the GPU time spent setting up and taking down batches which means a lower raw hashrate

You get paid for shares (or work) accepted so that is what you should be looking to maximize.  It is possible the accepted rate is still higher even with a higher rejected rate because the gross (raw) hashrate is higher.

Simplified example
100 shares gross w/ 1% rejected = 99 shares accepted
120 shares gross w/ 10% rejected = 102 shares accepted.

The later is more profitable.  Since you get "paid" for shares accepted that is the number you want to maximize.

Edit:I have tested it:
-i 16 vs -i 21: ccminer ~8% penalty vs coolMiner ~3% penalty .
-i 17 vs -i 21: ccminer ~4% penalty vs coolMiner ~1.5% penalty .
You can test it yourself.

Can you please add the bug fix SP added for multi-GPU rigs to get to 100% utilization at launch?

Wen starting the miner, on my 12 GPU rigs it takes anywhere from 7 to over 15 minutes for all GPUs to get to 100% utilization and hashing at their full potential. During the first few minutes, many of the GPUs are completely idle.

Please see: https://github.com/sp-hash/suprminer
specifically: https://github.com/sp-hash/suprminer/commit/265ab574ed56fddd164023dae9d34e8fe0504202


with the Suprminer/SP-Hash miner the GPUs go to 100% utilization on Lyra2z within the first minute or two.

Yup, that's me .

12x1080ti running without problems.

not working on linux