Could someone tell me why Ethereum is so important plz.
thx
High volume, large buy walls, it supports the crypto scene. Miners basically grow to the size of their tank, much like a goldfish. Ethereum is a very big tank. If Ethereum disappears, all those miners are going to have to be shoved into a bunch of very small fish bowls, which means not all of them are going to fit.
Essentially Ethereum supports the mining community and when it disappears miners are going to be very much hurting due to the amount of hashrate (other miners) on Ethereum. They aren't just going to give up and turn off their miners, they'll try to find other coins, whatever they can, to attempt to stay mining.
Ethereum armageddon is coming and that isn't just for show. Unless another coin becomes just as big as Ethereum there is going to be a lot of bad days for mining this spring.
As far as SP making a Zcoin miner... I don't think he knew when he wrote that that Zcoin doesn't use the normal version of Lyra2. There is no miner.
old vertcoin = lyra2RE (lyra2 chained with some other algos)
new vertcoin = lyra2REv2 (lyra grid is smaller than previous, still chained with other algos)
zcoin = plain lyra2 (not chained with other algos) WITH variable grid size based on block height (A LOT bigger than in the other two cases)
Corrrect.
The CPU implementation can saturate an I7's memory bandwidth with only 4 cores (maybe less) using only scalar instructions.
Vectorizing (4:1) had no effect on hash rate.
Any GPU miner would also hit a performance ceiling once memory bandwith was saturated. Given this occurs on a CPU
with only a couple of scalar threads I would expect similar on a GPU. In my opinion a viable GPU miner is out of the question.
But it's all moot now as zcoin will be switching to MTP and I doubt any other coin will choose this flavour of Lyra2.
Considering the amount of volume going through zcoin right now, even if it's not a long term solution, if a developer could hack together something that works they'd get people to buy it. There is a lot of money right now being funneled into CPU botnets with that coin. It's not like this is a small volume coin. Even if it changes next week, that's an entire week worth of mining... and a lot of money.
That being said, they haven't even announced a schedule for when they're switching to the new algo so it probably wont be within the next couple weeks... Maybe even a month from now. If I were them I'd do it before Zcash launches as it appears to be a competing coin.
, if you are interested in cloud mining or renting rigs. 
, and is possible get more information ? .
