Topic: KanoPool kano.is lowest 0.9% fee 🐈 since 2014 - Worldwide - 2432 blocks - page 2124. (Read 5352367 times)

Thank you Thub, I appreciate the breakdown and I've thought of all of those things.  In a previous life in the Navy I worked as an electrician for a couple of years while waiting for my C school to open up, so dealing with the wiring and distribution isn't a big deal, and I've already got a local contractor lined up once I finalize the building I'm going into.

From everything I've looked at however, it seems like individual PSUs are going to be what I wind up running with for a project of this size.  Industrial DC voltage systems don't seem to be either the right voltage or are too expensive to be worthwhile compared to using the 2880W IBM PSUs.

Where I'm putting this, electrical cost isn't really an issue, but I'm not planning on active cooling, just going with more space (cheap) and big ass fans (also cheap).  I may wind up underclocking during the couple of hot summer months (july/august) depending on operating temperatures and the space.

Fire is the biggest concern I have, I've designed a simple relay system to cut power to all the systems if a fire alarm goes off, but an installation of this size can't afford to staff it 24/7.  I'll have to rely on environmental monitoring, being able to cut the power and the local fire department during off hours.

This is for those of you using ckpoolmonitor.zachmonroe.com

As before with the restart that Kano did your apikey or BTC address has been wiped from the ckpoolmonitor. The reasoning for this is that initially there was a problem that if a user had an invalid api key it would keep triggering errors on the CKPool server and so Kano asked me to fix it which I did. I fixed it by having the system remove the bad api key value. The problem with this is when Kano did a restart and the ckpoolmonitor ran the api calls when the system was down it would get bad returns on all of the users and erase everyone's api key thinking they were bad. I have now implemented a "3 strikes your out" rule into the code. the code runs every five minutes, so if you get 3 bad returns in 15 minutes your api key is removed. This should eliminate it erasing the api keys during a restart. So everyone will need to login and fix your api key and/or BTC address to start graphing your hashing rate again.

If anyone has any questions, comments or ideas let me know.

Thanks,
Zach

Wow, this is a real serious project. If you do not understand anything about electricity, or, understand what I have highlighted below please seek professional help as this is not an amateur undertaking.

I am assuming a lot here, so here is my two pence worth, if it sounds a little condescending, my apologies. Your household supply is not designed to carry this load, this is a fairly serious amount of electricity and it is highly unlikely your power provider would upgrade your incoming supply.

I am also assuming your incoming power supply is 230V line to neutral, and that you will be drawing the full current on your 80 power supplies: -

1. You will be using an industrial building for this venture; I hope and not a garage?
2. You will need a three phase balanced power supply to cope with the 348 amps current draw. If your pF goes lower than the manufacturer's power supply stated 0.97 pF then you will end up by paying more for your electricity. Power factor correction capacitors are expensive but would pay for themselves in time. Industrial power rates will also work out cheaper than any household power rates anyway.
3. You will need a large distribution board with a main breaker and lots of MCCB's to split the load into safer current levels along with conduit, cabling buttress boxes and power sockets.
4. I hope you are in a really cold climate, as this current draw is like having over 140 - 2 kW heaters running all of the time.
5. You will need to make sure there is adequate separation between each unit to avoid overheating nearby units and steel racking to house them on.
6. You will need large extractor fans to remove the heat from the building and fans to draw cool air into the building.
7. You will require a huge A/C cooling unit if you are in a warm climate and that is seriously expensive to run.
8. You will need an industrial fire suppression system  - remember the recent Thailand incident. You could possibly have someone monitoring the system 24/7, at a pinch with industrial fire extinguishers, but human error is something you need to factor out.

Good luck.

Just a minor note: since the pool has now mined almost 200 blocks, I've changed the ckpool addresses mined to.
After the next ckpool restart we'll be mining to a new address - it's linked on the Payments page already - but no blocks going there yet until the next ckpool restart.
I'd planned to do this about once every 100 blocks if I remember - but I forgot last time (100)

Hi CK Poolers (poolies?)

I've been curious about renting hash power for a while now so I just rented 100TH for 24 hours for 1 BTC -- nice, round numbers! -- and pointed them all at ckpool. 

I used WestHash (are there other, better rig rental markets?) and chose the "fixed" (rather than their "standard") order type so I actually paid an auto-calculated fraction ~more~ than the going rate to guarantee that the hash power I ordered will be delivered continuously for the next ~24 hours.  With the "standard" type orders, you offer a bid price/th/day and, if no miners are available but you've bid higher than current orders that are running, the "grid" will "pause" some of those orders to fill yours.  But with those standard bid-type orders you also run the risk that someone will outbid you and stop your orders, over the course of the day.  WestHash / NiceHash has a fascinating system with lots of hash power (but a finite amount, and plenty of demand, resulting in a very liquid market) and orders that are limited to 24 hours in duration.  It forces you to think about mining very differently, using new measurement vectors (btc/th/day) and bend your brain around mining in short bursts using the rented aggregate hashpower of others' physical rigs, instead of the longer-term ROI predictions and resale values we tend to obsess over when we're mining with hardware that we own.

It's exciting to be sitting on so much hash power, though the "market" is so frictionless over at WestHash / NiceHash  that, statistically, I shouldn't make any profit whatsoever.  The price per TH/day hovers right around whatever the current difficulty would predict you should earn.  So all I can really hope for is a nice lucky day here on CKPool since of course, at the end of the day (literally), its really just gambling.

And now I'm like chewing on the maths, wondering how much it would cost me to rent enough hash power that, when pointed at the SOLO ckpool, I could reasonably expect to mine one block all my own :-) -- I do suspect that number will be right at 25 BTC but the interesting part is proving it, and what the levers are, on which one might be able to pull...
 
Next I may rent out my own (far less spectacular 2 TH of) mining rigs instead of mining with them directly. Might make more that way, if its a day with more buyers that sellers, like if there is some positive BTC news, or price increase that stirs up the buy side a bit :-)

I see that I have now shamelessly stolen 5th place on the stats leaderboard from lgant (me=gigawatt).  But fear not, lgant. I will return it tomorrow.

thanks!

-dave
 

I have a question maybe you guys can answer.  I'm thinking of setting up a 300 - 400 thash farm, what do people use to deliver power to that many systems?  I mean I have no real problem using 80 of the IBM 2880W PSUs if I have to, I was just wondering if there's a more efficient answer out there.

Was hoping for 3
But 2 is OK also
The long block CDF was 0.888

Now that's how you verify a block! 

slump busting tonight

yes it did, now what are the chances for to be retroactive

Too late

At least it went down

can we have one or all three blocks before new diff. arrives Please

LOL..I only have one more thing to look forward to then. 

I would say kick back go to the beach get an education,have kids and enjoy the grand kids....

I hear ya...  2 blocks forward 1 block back.   

Lol. We're paying for those 2 last blocks now.

Thanks again Kano!

Payout 348495 sent
4013becb7f4636d9f11eb04bd3b1f41cce9dd161ce2f335a1fe20ac77cb5e143
and confirmed
Zzzzzz

This is just one of the reasons I tell people to mine with Kano and CK.

Thanks Kano for running THE pool, and thanks to both you and CK for all you have done with the community, specifically the software contributions, but overall so many things I can't list them all