[ANN] cudaMiner & ccMiner CUDA based mining applications [Windows/Linux/MacOSX]

[wacko]

Has anyone tried running 7x 750 ti in one machine? I see that people here usually run 6 cards per board, but there are popular among miners motherboards that work with 7 cards (Asrock z87 killer, msi z87-g43 gaming etc), I wonder whether 7x 750 ti would work in one pc..

[1714683251]

1714683251

[bigjme]

-->http://cudamining.cc/url/configurations
There seems to be typo then  

can't trust anyone to send you their config without it needing to be checked
i will make sure i check the configs that get sent to me more from now on. If anyone else wants to submit some, would you guys like an online submission template, so you can fill it in and submit it for approval? (check before adding it to the page)

[nomad1109]

Are you guys talking about this?:


To me this just seems to be the effect of the different algo's. When I'm mining plain groestl or keccak I'm not seeing this, mining JPC it gets a bit more spikey, but at X11, which has 11 different algo's (lol) which each have a different impact on the power usage, it gets the worst. So that may explain those lines.

Sort of similar, but see how the 5-6 cards have a much higher level of 'bouncing' than the other 4?

I am not sure of the culprit, but card 5 is a MST 750 TI OC, and Card 6 is MSI 750 ti TF.

Same risers, all six cards are on risers, and only card 2 is a 1x riser from a 16x slot...

Card 5 has same OC settings as cards 1, 3, 4... and Card 6 has same OC settings as card 2.

This is with 6 instances of ccminer50 running, so each has it's own process.



As for the TDP, you can see that just raising the TDP of the BIOS only lowered the percentage of max, and not apparently actually changed the draw of the card. With the bouncing it goes between 22-50% of max, which given the per card draw of 38W would seem to be about half of the new 65 TDP.

[djm34]

actually, I am thinking to unlock the tdp.
With the core clock at max overclock, there are clear sign of throttling (the tdp usage ramps up to 118% then go back to 60% and so on... as well as the core clock...)

I did set my TDP to 65, but it just doesn't help, there is something else in there that keeps it from performing as expected.

Still pegged at Voltage limits as the reason, but it is a lower percentage of what the top level thinks it should be.

I think it has to do with there being no Pstate 2 (Custom) on the 750ti for whatever reason. Only state 0 and 8.

I am not an expert enough to just go into KBT and start changing numbers with confidence, but that is how I edited the TDP.

Have any thoughts on if the BIOS from one of my MSI cards (TF model) will work on the other (OC model)? Everything reports exactly the same in GPUZ except the model of memory, but I haven't been brave enough to try it. There is a different version on each model, but the TF just runs faster and OC's better.... not sure.

Are you guys talking about this?:


To me this just seems to be the effect of the different algo's. When I'm mining plain groestl or keccak I'm not seeing this, mining JPC it gets a bit more spikey, but at X11, which has 11 different algo's (lol) which each have a different impact on the power usage, it gets the worst. So that may explain those lines.

Sure this is linked to the algo but also on how nvidia cards are working.
I don't see this behavior on my 780ti for which tdp% core clock are set differently and both power and core clock are very stable.
Here at some point in the processing of the algo, the card requires higher tdp to sustain a given clock frequency, when it tries to increase the power (voltage or current), it goes beyond its 100%. The card mechanism changes voltage/intensity to put back the power below its limit (if you watch core clock frequency this one also change). Once it is well below the limit, it adjust the core clock back to the value which was set initially and the whole process repeats indefinitely.

So yes, it is somehow link to the algo but this is due to an upper TPD limit which is set to low to sustain the core clock at which it is set to run.
So my idea is to unlock the tdp and allow a higher tdp% so it won't throttle anymore. The card should me more stable and allow running at constant core clock (meaning faster too...) I don't think this will increase by a lot the tdp as the spike are just an effect of the throttling but that should stabilise the way the card run and consequently allow the card to run faster (however no miracle here... I am just speaking about having a stable overclock...)
 

[S_tring]

Hey Bigjme, if I recall correctly, you run a 6x 750ti rig.  I'm looking into building one myself (due to the recent spending money JPC and the rise in BTC has made me ).  I have loads of experience building computers and configuring them.  I'm new to the multi GPU route though, never even bothered with SLI for example.  Is there any advice you'd have for someone new to this, and could you recommend a specific motherboard?  Asus, MSI, Gigabyte, ASrock would all be very ideal as I'm in Taiwan and I'll have cheaper prices on those brands.  I'm also pretty in the dark with risers and all.  I've seen some people say they like usb based risers, and then there are powered, non powered, etc.  I know the 750ti doesn't use a dedicated line from the PSU, so that makes me wonder even further if it's wise to run 6 cards through a mobo.  Last but not least, I know that CPU plays into it all a bit.  my current 750ti micro atx has the celeron haswell g1820.  Lovely little cpu, but I'm just wondering if 4gm of ram and a tiny cpu would be enough for a 6 gpu rig.  Of course I'd like to keep it as economical as possible, but I have absolutely no qualms about getting better parts or specs to prevent future issues.  I currently ran into that on the 750ti micro atx rig not preparing for scalability and all.  Thank you in advance!

https://litecointalk.org/index.php?topic=16578.0

4gb ram? Only with Linux

I'm mining X11 using Linux. 5*750Ti rig. I have 8gb ram installed, and the system only uses 1.2gb. Also, it's a Celeron 2.7Ghz CPU and the rig consumes 25% CPU when mining.

[nomad1109]

Sure this is linked to the algo but also on how nvidia cards are working.
I don't see this behavior on my 780ti for which tdp% core clock are set differently and both power and core clock are very stable.
Here at some point in the processing of the algo, the card requires higher tdp to sustain a given clock frequency, when it tries to increase the power (voltage or current), it goes beyond its 100%. The card mechanism changes voltage/intensity to put back the power below its limit (if you watch core clock frequency this one also change). Once it is well below the limit, it adjust the core clock back to the value which was set initially and the whole process repeats indefinitely.

So yes, it is somehow link to the algo but this is due to an upper TPD limit which is set to low to sustain the core clock at which it is set to run.
So my idea is to unlock the tdp and allow a higher tdp% so it won't throttle anymore. The card should me more stable and allow running at constant core clock (meaning faster too...) I don't think this will increase by a lot the tdp as the spike are just an effect of the throttling but that should stabilise the way the card run and consequently allow the card to run faster (however no miracle here... I am just speaking about having a stable overclock...)

http://www.overclock.net/t/1267918/guide-nvidia-inspector-gtx670-680-disable-boost-fixed-clock-speed-undervolting

That is the article that I was trying to follow to stabilize the clocks... they are talking about OC modes and some Tanks game, but I think it would help us too....

That is where I hit the wall of never being able to select or edit the Pstate2 they talk about... I think it has something to do with how the 750ti is limited.

[goodluck0319]

can windows 7 handle 5 or 6 750ti or not?

[e6ug]

any news on the soonish 10% increase on jpc?

[nomad1109]

can windows 7 handle 5 or 6 750ti or not?

I run 6x 750ti on Win7 x64 no problemo.

[Dotcommie]

I was just searching for the GeForce GTX 750 based on price.  Cheapest around $119/us.  Could have swore I saw them for $79/us somewhere.

I can get a GTX 750 2gb EVGA version (NON ti) only difference is this one has 540 cuda cores as opposed to 640

anyone running this card? what type of hash rates are you guys getting on x11 with this or on scrypt?

would love to see a page dedicated to diff versions / hash rates. Maybe a google doc or on cudaminers.cc?

I get:

Scrypt
1 EVGA 750 SC = 260-270khs
1 Gigabyte 750Ti = 285-295khs

Jackpot (JHA)
EVGA 750 SC = 3200khs
Gigabyte 750Ti = 3900khs

Some algorithms I haven't found much difference and in fact, I think even though the 750 hashes slower than the 750Ti on Jackpot, it finds more blocks.  My rigs that have at least 1 750 in them seem to find more blocks than my Ti's.  I don't know why and haven't spent much time looking into it, but I've got at least a month of results on a pool to look at and for some reason the 750s have a greater chance of finding them than my Ti's.  My 1 750 in an old HP desktop has found almost 40 blocks and my 6x750Ti EVGA FTW rig has just barely found double that.

thx for the results! Is your EVGA 750 SC the 1 or 2 GB version?

Don't remember seeing any 2gb versions for sale but I heard rumors about them.  Mine are all 1gb.  I have the 1 EVGA and then 5 Gigabyte 750s.

[zelante]

Can anyone explain this?



This is from twin 660TI's mining jackpot using:

D:\ccminer30\ccminer30.exe -q -s 1 -a jackpot -d 0,1 -o  stratum+tcp://www.hashharder.com:9958

Hashharder reports: 4.2598 Mh/s

What is going on?

I doubt that these two cards are that capable.

I was getting close to 7 MHS earlier

~C

This problem was solved. Don't forget use forum search function.
https://bitcointalk.org/index.php?topic=167229.msg6858443;topicseen#msg6858443

[cayars]

I was just searching for the GeForce GTX 750 based on price.  Cheapest around $119/us.  Could have swore I saw them for $79/us somewhere.

I can get a GTX 750 2gb EVGA version (NON ti) only difference is this one has 540 cuda cores as opposed to 640

anyone running this card? what type of hash rates are you guys getting on x11 with this or on scrypt?

would love to see a page dedicated to diff versions / hash rates. Maybe a google doc or on cudaminers.cc?

I get:

Scrypt
1 EVGA 750 SC = 260-270khs
1 Gigabyte 750Ti = 285-295khs

Jackpot (JHA)
EVGA 750 SC = 3200khs
Gigabyte 750Ti = 3900khs

Some algorithms I haven't found much difference and in fact, I think even though the 750 hashes slower than the 750Ti on Jackpot, it finds more blocks.  My rigs that have at least 1 750 in them seem to find more blocks than my Ti's.  I don't know why and haven't spent much time looking into it, but I've got at least a month of results on a pool to look at and for some reason the 750s have a greater chance of finding them than my Ti's.  My 1 750 in an old HP desktop has found almost 40 blocks and my 6x750Ti EVGA FTW rig has just barely found double that.

thx for the results! Is your EVGA 750 SC the 1 or 2 GB version?

Don't remember seeing any 2gb versions for sale but I heard rumors about them.  Mine are all 1gb.  I have the 1 EVGA and then 5 Gigabyte 750s.

What is the x11 hash rate on the 750 (non TIs)?  Any idea?

[zelante]

Today i'm playing with pdcurses library and ccminer now look like this:

[coinits]

Can anyone explain this?



This is from twin 660TI's mining jackpot using:

D:\ccminer30\ccminer30.exe -q -s 1 -a jackpot -d 0,1 -o  stratum+tcp://www.hashharder.com:9958

Hashharder reports: 4.2598 Mh/s

What is going on?

I doubt that these two cards are that capable.

I was getting close to 7 MHS earlier

~C

This problem was solved. Don't forget use forum search function.
https://bitcointalk.org/index.php?topic=167229.msg6858443;topicseen#msg6858443

yes. modify cpu-miner.c and add this code before this string https://github.com/cbuchner1/ccminer/blob/master/cpu-miner.c#L932
Code:

   if (thr_hashrates[thr_id] > 1e8){
      applog(LOG_ERR, "abnormal hashes %f, exiting with code 211!", thr_hashrates[thr_id]);
      exit(211);
        }


Thanks but that is so far over my head it might as well be a jet flying at 35,000 feet.

[goodluck0319]

http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&DEPA=0&Order=BESTMATCH&Description=750ti&N=-1&isNodeId=1

here is the list from newegg

[Dotcommie]

I was just searching for the GeForce GTX 750 based on price.  Cheapest around $119/us.  Could have swore I saw them for $79/us somewhere.

I can get a GTX 750 2gb EVGA version (NON ti) only difference is this one has 540 cuda cores as opposed to 640

anyone running this card? what type of hash rates are you guys getting on x11 with this or on scrypt?

would love to see a page dedicated to diff versions / hash rates. Maybe a google doc or on cudaminers.cc?

I get:

Scrypt
1 EVGA 750 SC = 260-270khs
1 Gigabyte 750Ti = 285-295khs

Jackpot (JHA)
EVGA 750 SC = 3200khs
Gigabyte 750Ti = 3900khs

Some algorithms I haven't found much difference and in fact, I think even though the 750 hashes slower than the 750Ti on Jackpot, it finds more blocks.  My rigs that have at least 1 750 in them seem to find more blocks than my Ti's.  I don't know why and haven't spent much time looking into it, but I've got at least a month of results on a pool to look at and for some reason the 750s have a greater chance of finding them than my Ti's.  My 1 750 in an old HP desktop has found almost 40 blocks and my 6x750Ti EVGA FTW rig has just barely found double that.

thx for the results! Is your EVGA 750 SC the 1 or 2 GB version?

Don't remember seeing any 2gb versions for sale but I heard rumors about them.  Mine are all 1gb.  I have the 1 EVGA and then 5 Gigabyte 750s.

What is the x11 hash rate on the 750 (non TIs)?  Any idea?

I just checked.  It's 1825khs on x11 and I was a bit off on my jackpot numbers.  It actually does a consistent 3300khs.  So yeah, I'm happy with the experimental purchase.

[nomad1109]

Today i'm playing with pdcurses library and ccminer now look like this:

Very nice Zelante....

This is above my programming skills, but wanted to make sure you have this link, and from what I read it applies to pdcurses as well.

Looks useful.

http://tldp.org/HOWTO/NCURSES-Programming-HOWTO/

[xandrino]

can windows 7 handle 5 or 6 750ti or not?

I have 7gpus in win7 x64 rig. setting up is a b*tch but it can be done. tip: for 5-7 gpu rig, dont skimp on cpu and memory. celeron and 4gb may not hack it. mine is g3220 and 16gb ram

[goodluck0319]

what about i7 2700k and 8GB ?

[cryptomines]

Another CryptoNight coin. http://www.quazarcoin.org/