Ethereum GPU mining?

[DrMrLordX]

Try that and -t 3 and see what gets your more MH/s. I think the major reason to use them in separate instances is to reduce the total amount of downtime waiting for a new work package from the server. If you use -t 3 in a single instance, then all three cards go down at the same time during a pause, causing major headaches if you get a lot of small work packages (which shouldn't really be happening much if hashrate reporting works for your pool, but whatever). If you have all cards mining in separate instances, the likelihood of all your cards going down frequently due to a chain of small work packages is reduced. At least one or two of them should be mining at any given time despite frequent pauses between packages.

btw I had problems figuring out how to run multiple instances. I found the easiest way was to run one instance per user, and to just switch users.

 

[EightySix Four]

Huh, well I moved the box physically and now I'm getting 15MH/s per card, consistently tested across each card individually. Only difference were some updates, which AMD drivers are you guys using?

Edit: just saw earlier in the thread that 16.3s are no good, trying 16.2.

 

[SK10H]

My MSI 390 Gaming does 30 MH/s at 1100 GPU/1500 VRAM and -100 mv. GPU-z reports that it's only taking in ~140W when mining. I'm pretty happy with it.

There's no way it's consuming 140W at those setting. I have the same card doing 30MH/s, 1100/1500 -100mv (1.1v vcore), -35% power limit in afterburner (which is no different than 0%) and it's taking 235W at the wall, which is 210W for the card alone.

With -50% power limit, the core will throttle to ~960MHz at 65C or ~900MHz at 90C at 1.05v (bonus -0.05v for some reason :sneaky: ). At 960MHz, it's still using 208W from the wall -> still 188W from the card. Test on a 90% PSU using Kill-a-Watt. Fan speed is only at 50%, core temp 62-68C.

 

[EightySix Four]

Alright, so 16.2 is giving me 30MH/s per card again... For two cards, the other is showing up but it doesn't appear to be executing. The Radeon Settings app shows all three in hardware, but only overdrive settings for 2. Afterburner shows all three in the settings menu, but none of the stats for GPU1... sigh

 

[digitaldurandal]

I've downloaded ethminer and geth and read the guide posted by OP (ty OP.) Is there a good guide on mining with multiple cards?

 

[metalliax]

I've downloaded ethminer and geth and read the guide posted by OP (ty OP.) Is there a good guide on mining with multiple cards?

No problem - glad to share some wealth.

By default, ethminer will mine with multiple cards. Are you not getting the benefit?

 

[DrMrLordX]

There's no way it's consuming 140W at those setting.

Didn't think so. 235W isn't too bad though.

Alright, so 16.2 is giving me 30MH/s per card again... For two cards, the other is showing up but it doesn't appear to be executing. The Radeon Settings app shows all three in hardware, but only overdrive settings for 2. Afterburner shows all three in the settings menu, but none of the stats for GPU1... sigh

That's weird. What is

ethminer --list-devices

showing you? If the third card is showing up there, can you make it run individually?

 

[digitaldurandal]

No problem - glad to share some wealth.

By default, ethminer will mine with multiple cards. Are you not getting the benefit?

That is a valid question. I have not started mining really yet, I have just gotten everything situated and I was going to run it tonight and while I am at work tomorrow, then see the results. But I saw a lot of people on some of the pages complaining that only one of two cards was active etc, was unsure if there were any switches etc that I needed to use to get the full benefit.

I will post results tomorrow after work. Thanks again for gathering all of this information here!

 

[EightySix Four]

Didn't think so. 235W isn't too bad though.



That's weird. What is

ethminer --list-devices

showing you? If the third card is showing up there, can you make it run individually?

All three show up but card 0 is doing ~2MH/s while the other two do ~29.5MH/s. Radeon Settings is crashing now too so I'm assuming the driver is borked.

 

[DrMrLordX]

Either card 0 is faulty, or yes you may need to reinstall the driver. btw what is your primary display device?

 

[Madpacket]

Well managed to run 2 Asus 390's on a AM3 FX99 platform with a Phenom downclocked to 2000Mhz with 1 core enabled. Running default speeds and -100v undervolt I'm hitting 55-60Mh on Stratum server using a proxy. Using an old 750W Corsair V2 Bronze power supply I'm pulling 550W from the wall at 45% fan speeds. With losses about 500W in total which isn't terrible for such a feature packed board. This leaves me at least 100W wiggle room to play with where I'll jam everything into a Stealth case with 4x140MM fans. I think this box will be quieter and more efficient than my dual MSI 390 box. Fun...

 

[Accord99]

I've found that you can usually get a measurable power saving by running the fans higher and keeping the cards cooler.

 

[EightySix Four]

Anyone have Stratum for windows 0.0.4?

Got the 3rd card working by using the AMD driver removal tool and doing a reinstall. 93 MH/s total at 1100/1600 for all three cards.

Edit: Nanopool has 0.0.4 on their help page. 0.0.5 crashes for me.

 

[digitaldurandal]

I did not realize that the address it gives you need 0x in front of it so I accidentally mined for nanopool for free for a few hours last night. The cards got a bit hot, I am going to setup a profile to undervolt them and turn the fan profile up when mining and try again tonight.

 

[digitaldurandal]

Anyone have Stratum for windows 0.0.4?

Got the 3rd card working by using the AMD driver removal tool and doing a reinstall. 93 MH/s total at 1100/1600 for all three cards.

Edit: Nanopool has 0.0.4 on their help page. 0.0.5 crashes for me.

I know you used Stratum because Ethminer was not getting your 3rd card but I am curious if you saw a difference in the hash rate for the two that were working. 93 MH/s is pretty good - about 15 bucks a day at the current price?

 

[DrMrLordX]

Congrats on getting your card working. I had problems with my 270 when I slapped it into my case and let 16.2 work for it without an uninstall/reinstall. Though my problem involved Win10 refusing to boot due to a driver error, which resulted in my having to boot into safe mode where my desktop kept disappearing/reappearing, forcing me to access device manager from a command line that let me type one character per second due to input lag. That was not fun.

 

[EightySix Four]

I know you used Stratum because Ethminer was not getting your 3rd card but I am curious if you saw a difference in the hash rate for the two that were working. 93 MH/s is pretty good - about 15 bucks a day at the current price?

Stratum works in conjunction with Ethminer - just using it as a proxy for Nanopool to keep all three fed. I don't have enough data from before honestly to have a valuable comparison.

Congrats on getting your card working. I had problems with my 270 when I slapped it into my case and let 16.2 work for it without an uninstall/reinstall. Though my problem involved Win10 refusing to boot due to a driver error, which resulted in my having to boot into safe mode where my desktop kept disappearing/reappearing, forcing me to access device manager from a command line that let me type one character per second due to input lag. That was not fun.

Yeah, glad they're up and running now. Puts me at about 110 MH/s with the 380 rig as well. Hopefully it will pay off.

 

[DrMrLordX]

I've found that you can usually get a measurable power saving by running the fans higher and keeping the cards cooler.

That is a good point, one that is worth repeating. Hot ICs will be less power-efficient than cool ones, and some of these fan profiles are just too darn passive for my tastes. Granted they can be noisy, but my rig is noisy anyway.

Yeah, glad they're up and running now. Puts me at about 110 MH/s with the 380 rig as well. Hopefully it will pay off.

If eth keeps going up, it may well in the long run . . . though difficulty is on the rise too. Nanopool.org is reporting a T value that rose from ~15 in early March to ~25 now. How that's really going to affect earning is beyond me, especially if eth per gigahash does not scale linearly with difficulty.

 

[EightySix Four]

If eth keeps going up, it may well in the long run . . . though difficulty is on the rise too. Nanopool.org is reporting a T value that rose from ~15 in early March to ~25 now. How that's really going to affect earning is beyond me, especially if eth per gigahash does not scale linearly with difficulty.

Definitely.

Going to have to cool the middle card some other way, it's just sucking in hot air and throttling. May CLC that card, trying to figure out if the Corsair HG10 A1 (for 290/290x) will fit or not. Ironically I'd probably be better off with one of AMD's hated blower coolers.

New odd problem - eth-proxy.exe defaults to dwarfpool when launched from a batch file, but reads my config when launched from a command prompt...

 

[MrTeal]

Does anyone else find that they have issues with GPU risers? I have a bunch of the ribbon ones from back in the BTC mining days and don't ever remember them being sketchy, but I've been seeing a lot of instability with them in some rigs that I don't if the cards are plugged directly into the board. Interestingly I've only seen this on the CPU PCIE lanes, the ones coming from the chip set seem to work without issue.

 

[Madpacket]

Does anyone else find that they have issues with GPU risers? I have a bunch of the ribbon ones from back in the BTC mining days and don't ever remember them being sketchy, but I've been seeing a lot of instability with them in some rigs that I don't if the cards are plugged directly into the board. Interestingly I've only seen this on the CPU PCIE lanes, the ones coming from the chip set seem to work without issue.

Unless they're powered risers I wouldn't touch them. I have 5 risers now and they're built very well with SATA power and USB for extensions. Try to buy ones with padding on the bottom so you can mount them in larger ATX cases while using mATX format motherboards. This gives you the advantage of spacing the cards out for better cooling. I ran into the issues you've described in the past so I only buy quality ones and they don't have issues.

 

[Madpacket]

Oh and just an FYI for others here. I switched half my miners from GET mining at Nanopool to Stratum at Ethermine.org. Less fees and they pay for orphaned blocks. Basically what Dwarfpool offers without the worry of contributing to the biggest pool. I'll update the thread if everything goes well.

 

[Madpacket]

Definitely.

Going to have to cool the middle card some other way, it's just sucking in hot air and throttling. May CLC that card, trying to figure out if the Corsair HG10 A1 (for 290/290x) will fit or not. Ironically I'd probably be better off with one of AMD's hated blower coolers.

New odd problem - eth-proxy.exe defaults to dwarfpool when launched from a batch file, but reads my config when launched from a command prompt...

You must be calling the wrong conf file from within the batch file. At least that's what it looks like.


Re difficulty, without the price going up in lockstep with difficulty we have maybe a 2 months left of profitable mining. This is why I warned people about cutting off buying additional cards as it becomes self defeating. We're all reducing profits for each other by adding more cards. This is why mining is always a temporary endeavor.

Vitalek is also taking a lot about proof of stake so I think the push for that will come sooner than we want. Hopefully they figure out a way to appease the miners as well as the large stake holders.

 

[EightySix Four]

Oh and just an FYI for others here. I switched half my miners from GET mining at Nanopool to Stratum at Ethermine.org. Less fees and they pay for orphaned blocks. Basically what Dwarfpool offers without the worry of contributing to the biggest pool. I'll update the thread if everything goes well.

Don't they use the same distribution model and both have s 1% fee if you're using stratum?

You must be calling the wrong conf file from within the batch file. At least that's what it looks like.


Re difficulty, without the price going up in lockstep with difficulty we have maybe a 2 months left of profitable mining. This is why I warned people about cutting off buying additional cards as it becomes self defeating. We're all reducing profits for each other by adding more cards. This is why mining is always a temporary endeavor.

Vitalek is also taking a lot about proof of stake so I think the push for that will come sooner than we want. Hopefully they figure out a way to appease the miners as well as the large stake holders.

I bought with the intention of selling the cards if prices don't move, after rebates and Hitman the cards came out to $245 or so a pop, so I should be okay on that end. I anticipate them moving personally. I also have $0 electric costs 👍🏻

 

[Madpacket]

Depending on VRM design you can save 5-15w by running them cooler. Either by increased fan speeds or mining in colder areas. A properly sized quality power supply still gives the biggest savings. I'm very impressed with my EVGA 1000W Platinum supply. Even at 750W it's pushing out cool air.