Topic: Building Cheap Miners : My "Secret" - page 19. (Read 60235 times)

Under Linux, I have 6 Nvidia cards working.  Not sure what is up with the Proliant G7 series.  I have tried a DL360, DL380 and the DL580 and none of these will boot with more than 4 GPUs installed.  Windows will lock up at loading screen.

Slap a USB stick with HiveOS on it and 6 get recognized easily.

I have a ML350P G8 that has taken 6 GPUs in windows easily.  

Edit* Make that 9 1060s in one 580 in HiveOS.

I'm using Sandisk USB 3.0 16MB sticks with no problems so far.  I did have a few issues early on with some cheap no name sticks.

The R815's, while power hogs are work horses.  They just plug away like nothing is wrong and require minimal baby sitting.

I'm having an issue getting more than 4 cards working on the 580s under Windows.  Two separate boxes lock up with 5 Nvidia cards connected.  I will try hive OS next.

http://www.cointainer.life/2018/02/22/density-electrical-101/

That should answer all your electrical questions.

ohh you were so wrong... network hashrate goes now from 500+ to 400+....

Im not sure about HiveOS, but ive been using USB drives for SMOS for nearly a year on rigs, not a single failure yet. Not even a corrupt file error from a block going bad.
Im using Samsung USB3.0 16GB drives

Thanks for this as it has saved me some issues with the R815's I picked up.

By the way I read somewhere that these R815 servers only work with 2Rx8 ECC Registered memory. I picked up 25 sticks of 2GB 2Rx8 PCE-10600R memory and it worked without issues.

Question on running off 16GB usb flash drives. Do these wear out pretty fast and die? When I tried running off a flash drive for HiveOS the flash drives died in about a week because of the constant log writing that was going on.

I am looking to go the 240v route for all the servers I have acquired (5x HP DL580 G7, 2x Dell R815, various other SuperMicro) and have some questions in doing so.

I am looking to pick up these PDUs: https://www.ebay.com/itm/Lot-of-4-Spectrum-Power-Distribution-Unit-PDU-8x-240V-16A-72A-116BUHEN-01/192482251025

What cables do I purchase to go from these PDUs to the server power supplies?

Also how did you connect the PDU to the L6-20R?

Thanks

Did you ever get GPUs working in the R815?

I picked up two and would like to also run GPUs in them.

I am still waiting on the HP DL580 G7 10-pin to dual 6-pin power cables. I got the 10-pin to dual 8-pin I ordered later and they are very well constructed:

In the mean time I wanted to find a cheap frame for mounting my GTX 750's externally for the three HP DL580 G7 systems I have.

I came across this: https://www.ebay.com/itm/Multipurpose-GPU-Mining-Rig-Rack-Case-Frame-Bitcoin-AMD-NVIDIA-GTX-RX-580-1070/253405188911?hash=item3b0020532f:g:EkEAAOSwKcVadm9J for $24.99

After looking at the picture and measurements I was able to determine that it was actually: Whitmor 4 Tier Floor Shoe Rack - 20 Pair - Storage Organizer
https://www.amazon.com/gp/product/B005KC6DY0/ref=od_aui_detailpages00?ie=UTF8&psc=1

The ends are sturdy plastic resin and the horizontal round poles are coated metal.

I ordered four of them at $7.09 each on April 11th. Total with tax was only $30.68.

Current price is now $10.21 with free shipping over $25
 

Just got my third HP DL580 G7 Rig up and running on HiveOS. All three are currently doing 7.75 KH/s on Monero V7.

Currently I only have four GTX 750's in each Rig. I am waiting on the special 10-pin to dual 6-pin PCIe power cables that I ordered from China to arrive so that I can add four more GTX 750's to each Rig. That will add another 2.88 KH/s to the three miners more if I get overclocking working. HiveOS overclocking is broken (as in it does nothing) but I was able to do overclocking manually. I just need to get that automated when the Rig(s) boot. When fully loaded and OCed I expect to see 11 KH/s on the three.

It turns out that you cannot use custom cpu settings on more than one machine even if the systems are exactly the same because Linux disables different cores for no apparent reason.

I had affinity errors on my second HP DL580 G7 running HiveOS because Linux did just that disabled different cores. The only way I could run without getting affinity errors was to let XMR-Stak auto-generate it's own on startup like you have.

For me not having control is not optimal but because Linux is stupid I have too.

I have updated my original post: https://bitcointalksearch.org/topic/m.33408190

What is the vesting period of B21 tokens? It is not clearly stated.

I expect a spike to $3-4 for 1KH/s per day over the next week and then slowly go down to settle around $2-$2.50 for 1KH/s per day. That is certainly an improvement from the 0.56 for 1KH/s per day it was just a couple of days ago.

Since ASIC's are now useless and a whole lot of botnet miners are orphaned I don't see the hash rate going alot higher from the current global rate of 145 MH/s:

Difficulty   114.616 G -7.87% in 24 hours
Hashrate   144.596 Mhash/s -81.33% in 24 hours
Monero Mining Profitability   0.6414 USD/Day for 1 KHash/s

https://bitinfocharts.com/monero

Even if the current hash rate doubled to 300 MH/s it would still be significantly less than the 1.1 GH/s it was before the fork. At 300 MH/s Profitability should be 2.05 USD/Day for 1 KHash/s or 366% better than pre-fork.

I can certainly live with that.

---------------

Edit 1: 17:50 CDT 04/07/2018 - Difficulty getting easier and Profitability increasing

Difficulty   93.383 G -27.17% in 24 hours
Hashrate   156.719 Mhash/s -72.85% in 24 hours
Monero Mining Profitability   0.7847 USD/Day for 1 KHash/s

Edit 2: 22:20 CDT 04/07/2018

Difficulty   76.866 G -42.22% in 24 hours
Hashrate   167.254 Mhash/s -55.67% in 24 hours
Monero Mining Profitability   0.9408 USD/Day for 1 KHash/s

Edit 3: 08:24 CDT 04/08/2018

Difficulty   49.093 G -60.68% in 24 hours
Hashrate   190.917 Mhash/s +29.52% in 24 hours
Monero Mining Profitability   1.4867 USD/Day for 1 KHash/s

Edit 4: 12:57 CDT 04/08/2018

Difficulty   38.306 G -64.46% in 24 hours
Hashrate   226.997 Mhash/s +51.65% in 24 hours
Monero Mining Profitability   1.9081 USD/Day for 1 KHash/s

Looks like it will settle around $2-$2.50 for 1KH/s per day without the higher earlier spike since many farms have now moved to mining Monero.

Edit 5: 20:00 CDT 04/08/2018

Difficulty   32.073 G -62.05% in 24 hours
Hashrate   272.847 Mhash/s +68.03% in 24 hours
Monero Mining Profitability   2.3169 USD/Day for 1 KHash/s

Hopefully the Hashrate increases will start to slow down soon

Edit 6: 15:53 CDT 04/09/2018

Difficulty   41.794 G +21.26% in 24 hours
Hashrate   424.229 Mhash/s +72.64% in 24 hours
Monero Mining Profitability   1.658 USD/Day for 1 KHash/s

Well it is beginning to look like you were right in that the flood of farms now mining Monero keep coming. I have yet to see the Hashrate acceleration even decline. I thought 300 MH/s would be the top now I hope 500 MH/s can hold.

Edit 7: 17:44 CDT 04/14/2018

Difficulty   53.898 G +0.54% in 24 hours
Hashrate   459.753 Mhash/s +4.81% in 24 hours
Monero Mining Profitability   1.5033 USD/Day for 1 KHash/s

Thank goodness the 500 MH/s did hold. There was a brief period where it was exceeded but it now has settled into the 450-475 MH/s range

And as profitability goes up, the diff will too as everyone floods it.  It's exactly what happened to Haven.  For a moment in time there, 1KH/s was $20/day on Haven!

Monero (XRM) has had massive Hashrate drop since fork.

as of 7:45 AM CDT on 4/7/2018:
Difficulty 127.092 G +3.69% in 24 hours
Hashrate 141.213 Mhash/s -85.49% in 24 hours
Monero Mining Profitability 0.5736 USD/Day for 1 KHash/s

https://bitinfocharts.com/monero

In the upcoming days the Difficulty will start to drop and Profitability will start to rise to adjust to the new global Hashrate.

Monero XMR hard forked about 5 hours ago.

My XMR pool is Nanopool. Their overall hash rate has dropped from about 60 MH/s down to right now 25MH/s. A 59% reduction.

https://xmr.nanopool.org/stats

In the near future the difficulty should drop and my miners will be more profitable.

All of my miners Cast_XMR v0.9.2, XMR-Stak 2.4.2, HiveOS 0.5-41 transitioned seamlessly.  

From an earlier post of mine:

how much hash rate do you get

Hrm seemed to have missed a question back there.  It's been a crazy last week.

The 8837's are doing anywhere from 1500-1650H/s depending on how loaded with GPUs the box is.  I've found I'm getting consistently better hash rates on GPUs and CPUs by killing a thread or two on the CPU side.

I'll have to check the SAS firmware, maybe I just turned off the OSD for it.

Haven was real sweet for about a day after their hard fork.  Now not so much.  The ASIC wars are going to be interesting in the cryptonight space.

Finally got around to getting the second Vega 56 into the Z400. A little history - before I was aware of this thread I had purchased a couple of Vega 56's at MSRP. So I put them both into the Z400. Upon booting I got an error stating the front fan was not detected. Turns out I had smashed the fan connector on the motherboard with the Vega 56 in the lower slot. As of now I still have to press F1 when I restart/power up. I never had two Vega's in the Z400 running because the spacing looked to small and I had another system to put it in. That system was sold along with my two original Vega's.

So today my first attempt was to use both x16 slots in the Z400 for the two Vega's. There was hardly any spacing between them but I thought I would give it a go. Started Cast_XMR up and it was mining great on both cards. Then the temp started increasing on GPU0, then the fan went to max, then the temp reached 70+ then the card throttled. So that was a no go. The Z400 was under a desk so I wanted to have both cards inside it so the solution was to use a riser on the first Vega and move it up where the riser base rests against the chipset heatsink. Then using tie wraps to attach the Vega to the HD cage and the card bracket to the card cage slot. This allows about 1-2" space between the Vega's. Now both are mining fully at 3840 H/s with temps of 60c and fans at 3200 RPM. I leave the side panel off to help keep the Vega's cool.