archive snowblossom slack mining
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2018-11-06 20:06:24
Fireduck
Mining software concept: surf mode. Imagine you generate a ton of pending work units in memory. Each of them needs specific data from specific snow field segments.
2018-11-06 20:07:10
Fireduck
You read through the snowfield from block 0 till to end. Just one big sequential read. You use that data to advance the work units as you read the data they need.
2018-11-06 20:07:43
Fireduck
If you are lucky, then the next data they need is still coming and they are riding the wave, advancing along ahead of or with your read wave.
2018-11-06 20:08:00
Fireduck
If they need something behind the wave, then they are off the wave and either get abandoned or wait for the next wave.
2018-11-06 20:08:34
Fireduck
If your SSD can read at 3GB/s (fairly reasonable) then you can do a complete wave in 43 seconds.
2018-11-06 20:08:52
Fireduck
You can do 6 waves (the most you'll ever need for all work units to complete) in 256 seconds.
2018-11-06 20:09:00
Fireduck
This would be pushing it, but is below the block time.
2018-11-06 20:09:36
Fireduck
and you can also try things like you only both with work units that make it to completion in 2 or 3 waves, discarding a huge number but still keeping a lot
2018-11-06 20:11:34
Rotonen
is that just betting very wide on untangling the linked list onto a hilbert curve?
2018-11-06 20:13:07
Fireduck
I don't know enough about hilbert curves to answer that. Those are the square space filling things, right?
2018-11-06 20:13:30
Rotonen
yeah, ip address space wiggly snakes
2018-11-06 20:14:50
Rotonen
i’ve been thinking of something similar, your random is too good, so just shuffling should always make seeks easier?
2018-11-06 20:20:16
Fireduck
if your queue is deep enough, you can kinda simulate memory mining
2018-11-06 20:20:29
Fireduck
don't even need the wave to be in order
2018-11-06 20:20:41
Fireduck
just load the chunk with the longest current queue of work
2018-11-06 20:21:39
Rotonen
i’ve been thinking of something like that for distributed mining across the internet
2018-11-06 20:22:15
Fireduck
the bandwidth probably gets brutal
2018-11-06 20:22:37
Rotonen
does it matter if some participants are slow?
2018-11-06 20:22:59
Rotonen
glacial mining, melting the fields
2018-11-06 20:23:56
Fireduck
not really
2018-11-06 20:24:06
Fireduck
there are always more work units that could be started
2018-11-06 20:24:15
Fireduck
if a particular queue is slow or dead, that is fine
2018-11-06 20:24:44
Rotonen
exactly
2018-11-06 20:25:05
Rotonen
so i guess people can participate if they have even one chunk
2018-11-06 20:25:46
Fireduck
sure
2018-11-06 20:26:51
Fireduck
https://pcpartpicker.com/list/2Wb8mq - current plan for a cheap 50kh/s miner (up to field 8)
2018-11-06 20:28:40
Rotonen
missing a psu and a case
2018-11-06 20:29:23
Fireduck
cases are for suckers
2018-11-06 20:29:26
Fireduck
but yeah
2018-11-06 20:29:49
Rotonen
mostly a combo deal could be cheap
2018-11-06 20:29:52
Fireduck
With those things, probably at least $300, so $6/kh
2018-11-06 20:30:01
Fireduck
which seems like a lot
2018-11-06 20:30:23
Rotonen
prolly a bit less, but yeah
2018-11-06 20:31:15
Fireduck
but those intel 760p seem pretty damn great for the price
2018-11-06 20:31:20
Rotonen
how about you add a divider to your index for ’works up to n fields into the future’
2018-11-06 20:31:21
Fireduck
assuming they can do what the specs say
2018-11-06 20:31:49
Rotonen
they seem pretty legit and not thermally constrained either
2018-11-06 20:32:18
Rotonen
intel is a boring enough company
2018-11-06 20:32:30
Fireduck
right
2018-11-06 20:32:55
Fireduck
My old intel 1.2TB PCIE nvme still kicks ass
2018-11-06 20:34:01
Fireduck
450k/s random reads
2018-11-06 20:34:46
Rotonen
that’s some 900 series workstation card?
2018-11-06 20:36:17
Fireduck
I bought it in 2015
2018-11-06 20:36:31
Rotonen
i remember people getting those for adobe scratch volumes
2018-11-06 20:36:49
Fireduck
I got it for bitcoin/electrum servers
2018-11-06 20:37:14
Rotonen
i ran mine on spinny disks, xfs and enough ram
2018-11-06 20:39:25
Fireduck
@Clueless what was that m.2 pcie riser you liked?
2018-11-06 20:39:38
Rotonen
that’s the asus one
2018-11-06 20:40:23
Rotonen
i’m morbidly curious as to how 760p would do on VROC on that
2018-11-06 20:40:24
Clueless
@Fireduck I'm totally ready to jump in mining, budget of 1-2 BTC
2018-11-06 20:41:48
Rotonen
ctrl-f ’jump first’ http://telefinn.blogspot.com/2011/11/matti-nykanen-quotes.html In in recent weeks, I have made references on a couple of occasions to the legendary Finnish ski-jumper and bon-viveur Matti Nykänen . In pa...
2018-11-06 20:43:25
Fireduck
"If things are going well, then call me. I can fuck it up In seven seconds."
2018-11-06 22:51:20
Rotonen
one can now get epyc on amazon
2018-11-06 23:07:47
Daeng
Me too thinking of mining but maybe I'm too late at 128gb ram i don't have any machines/facility have to start from zero though if i mine it'll help the network get more decentralized as i think maybe nobody from where I'm at mine this yet
2018-11-06 23:14:17
Rotonen
128GB gets you quite far at this point still
2018-11-06 23:21:11
Rotonen
@Fireduck there's your upcoming unicorn tears again, 4TB per socket EPYCs sometime in 2019 https://www.anandtech.com/print/13561/amd-previews-epyc-rome-processor-up-to-64-zen-2-cores AMD Previews EPYC ‘Rome’ Processor: Up to 64 Zen 2 Cores