Hi @tromp I’ve been reading a lot about Grin mining but there’s a question I haven’t found an answer for: how does Grin deal with mining difficulty and block production? Is there a automatic adjustment as in other PoW cryptos? Does it work the same way, or not, for C29 and C31+? Thanks in advance for your answers!
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Looks like it was just a rash statement from their (Sapphire) side. On the wave of HYIP.
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Right now 2080ti makes 1.7gps with fidelity of about 0.7. Does it mean that “real” useful gps is 1.7 * 0.7 = ~1.19, or that 1.7 number already has 0.7 fidelity applied?
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All the GPS being reported assume fidelity=1. Currently 2080ti is around 1.25 effective, but @tromp is working on a fix.
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I’m considering building a rig with 6x2070. 2080Ti are extremely expensive for me to take a risk, and 2080 costs 1.37 times more than 2070, but gives only 1.27 times more GPS…
What will you guys say about it? Should I choose 2070 or may be I missed something?
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@Rabinovitch you also have to consider the electricity cost. 3x 2070 (@.5gps each) should get you graphrate of 1x 2080ti (@1.5gps each). Is 2070 1/3 of the price and does it consume 1/3 of the electricity? From what I can see 2x 2080ti should be same graphrate and less expensive and consume less energy than 6x 2070 .
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Wow, thanx, I had no performance values for 2080Ti on C31 until now. ))
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@tromp can you confirm fake 1.7 gps numbers for 2080ti right now on grin-miner? And effective 1.2-1.25?
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where is the source for this quote? thanks!
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is this means the real GPS for 2080ti C31 is 1.7*1.25= 2.125 ?
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Read the whole thread. I meant, REAL GPS for 2080Ti is 1.25 gps. That’s an assumption, based on fidelity of 0.7, and needed to be verified by @tromp himself.
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Minerbabe… v4.12, latest kbminer version.
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1.7 sounds about right and it’s know to have fidelity around 0.7, so that has the same solution rate as 1.19 gps with fidelity 1…
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Could someone explain what fidelity means? Does it mean a fidelity of 0.7 only solves it correctly about 70% of the time. thus the handicap.?
Is there a potential fix for this, or is this is just the way it is?
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Fidelity is explained here: What to mine? Choosing between Cuckatoo31+ and Cuckaroo29
The quote is:
Fidelity of a miner is the probability of it finding 42-cycles in graphs that have them. Normally that should be over 0.999, so we can consider it equal to 1 for all intents and purposes. But when a (mean) miner is constrained by available memory, it has to spill a small fraction of edges that do not fit into the buckets and this reduces the fidelity. Notably, the cuckatoo_mean_cuda_rtx_31 miner has a reported fidelity of about 0.7
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Thanks, that clears it up a little, so i’m guessing there is no fix for this card.
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May be we will see such ‘fix’ in coming weeks. @tromp is working on an update with more relaxed memory constraints which can result in fidelity closer to 1.
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that would be great, thanks
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Taking Tromp’s and Greggy’s comment about .7 fidelity in mind, Sapphire’s RX570 0.42 gps effective becomes 0.6 gps (ie. 1/.7*0.42) or about 1/3 of 2080ti performance but about 1/4 the price.
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