Topic: CCminer(SP-MOD) Modded NVIDIA Maxwell / Pascal kernels. - page 852. (Read 2347659 times)

I'm unsure if its the rig shutting down or the miner, but if its the rig I'd check for overheating problems "CPU or motherboard".
Get something to monitor temperatures and other resources: http://www.aida64.com/downloads works good for that.  
If its the miner then the swapfile may fix that.

I changed my swapfile from 8GB to 16Gb now on the problem rig, i hope it will run fine now.

I think adding more swapfile would be enough. I have 4GB RAM in my rigs but with 16GB swapfile which lets me run 4x970 + 2x750 Ti. The swapfile is never used (as it wouldn't use 8GB memory either) but it needs it momentarily.

I just added another 4GB to this rig, i hope it will help.
I have five rigs running in total but this one is the only troublemaker

If this dont help i will swap cards in two rigs and see what happends.

I have rig with 6 960 (4GB) that won't start with less than 8GB RAM, and another with 6 960 ( 2GB) that work with 4GB RAM. And rig with 3 980s that work perfectly with 4 GB RAM. And this 970x2 + 960 with problem with some algos ( neoscrypt, lyra2v2 and so-so with x13 (?) ) I suspect 2 unpowered risers might be a problem...
Double check all connections!

I will test to add more ram later today and see if it help.
I always benchmark all algos in the nicehash miner and i dont get any errors while doing that.

Put RAM anyway to test, but... I have 1 rig with similar problem. Did you try "Benchmark" in nicehash miner? Did it run all coins or terminated some?
My rig has problems with some coins and if that is your case it might point to what the problem is

see - that is very weird ...

if you have a spare system - try fedora install with the same setting you are using with centos ...

im baffled ...

i know this much for sure - if i go back to a f20x64c6.5 system - it compiles and runs beautifully with no issues in compile ...

the moment you go to f2x64c7.0 ( as you are forced to go to that version of cuda if you are using fedora 21 ) then hashrates are less than half that of c6.5 IF they work at all ...

the update to f22x64c7.5 seems to be running as well and better than the f20x64c6.5 installation ...

admittedly - its impossible for me to test f20x64c6.5 now as i dont have a spare machine to do the installation with - so there is no way of telling whether ccminer-spmod74 is actually running any better on f22x64c7.5 ...

im stumped mate ... really ... you helped me a while back with a compilation issue ( if you remember ) that i had with the earlier version f19x64c6.5 and i have been very thankful since ... the idea that an upgrade like this can do the reverse of what most people are getting NEEDS to have the source of it located ...

im actually quite upset that nvidia are leaving a lot of loose ends with their cuda implementations - unless off course you have the really high end cards ... it seems thats all they really care about at the moment ...

in any case - i appreciate your time and effort ( once again with my issue ) ...

#crysx

I have some problem with my 2x980 rig i started up a few days ago.
I run Win 8.1 on it like the rest of my rigs and it is a clean install.

The rig is shutting itself down like 1-2 times per day. And when i fire it back up Windows tell me that the computer ran into some problems.
This occurs with or without oc on the cards, not sure wth is going on. It happends when mining with both sp mod and the nicehash miner.

I have a 1200w Silverstone strider psu in that rig so it is not a power problem.

I have 4Gb ram in this rig just like the rest of my rigs, but could it be that i need more ram with 980 cards ?
This is the first time i mine with 980s so i am kind of out of ideas here.

Thanks for the offer but I wouldn't accept it unless it would help solve the dilema, not just to prove it. Also you're
getting the expected performance of cuda 7.5 on a 750ti so there may be little for you to gain by pursuing this issue.

I looked at the clock specs for the GB LP card and they are about 10% lower than my EVGAs so that can account
for your lower baseline.

With that variable eliminated it leads me to my real pet peeve, the lower performance with cuda 7.5 vs 6.5. It still
baffles me that Nvidia would do this with apparently no effort to either fix it, provide a compatibility mode, or continue
to support 6.5.

I think I need to do some testing of cuda 7.5, maybre things are improving.

EDIT:

I have tested cuda 6.5 vs 7.5 on Centos 6.7, driver 352.63, with 2 EVGA GTX 750ti SC standard clocks, mining x11.
Each card produces different hash rates:

GPU0: 6.5 3085
           7.5 3015

GPU 1: 6.5 3155
            7.5 3090

Cuda 7.5 deficit is still about 70k, about 2%.

that is what im saying joblo ...

its not contradictory at all ...

my cards did just below 2800KH on c6.5 compile on f20x64 - now they do a little over 2800KH on c7.5 compiled on f22x64 ... these cards NEVER did 3100KH on ANY of my systems ... period ...

so contradictory to OTHERS or not - MY systems are doing this ... thats it ...

i can allow YOU access to prove it mate - as i trust YOU ( and only a very few others on here ) if you would like to try and compile for yourself in MY systems ... i can allocate one machine and you can have a go ... THEN tell me how contradictory it is when you see the SAME results as i do ...

my offer is open mate ...

#crysx

NO YOU CAN'T--

The 750 has 512 CUDA cores and the 750ti has 640 CUDA cores.  The number of CUDA cores is the basis for the processing capacity.  It is a significant physical difference.       --scryptr

I'm preaching to the choir once again but there are no magical 38 watt 750 cards exist, period. Even the non-Ti 750 cards can pull up to 60 watts with the stock BIOS regardless of having a 6 pin or not. That of course doesn't mean they will use 60 watt with every algo but they will use close to that much with more power hungry algos  (eg. groestl).
Look into their BIOS' or any reliable reviews/stress tests or better yet, look at the wall with a watt meter.

There are no huge efficiency gaps (hash per watt) within Maxwell cards.

Um... thanks?

only reason for win 10- 32 bit was that i already had win 7- 32 bit and the upgrade to 10 was free. the 3GB RAM limitation is really killing me though. firefox and even chrome are such memory hogs.

as for flashing from non-ti to ti, i'm not sure you could do that.  i think non-ti has 512 cuda cores, and ti has 640 cores.

can you flash 750 non ti to 750 ti and what do you change

Ok, you running 32-bit operating system. There must be a good reason for that?

yes, all of my gigabyte windforce models have the power-limiter mod to 64 watts instead of 38.

@antantti, yes two of the gigabyte cards are in my daily win 10: 32 bit machine, running release 66 of ccminer.  the rest are running under kopiemtu (Lubuntu 14.10 - 64 bit) USB install.

http://gpuz.techpowerup.com/15/11/27/prx.png
http://gpuz.techpowerup.com/15/11/27/csq.png

I had one ETH mining rig with 3x750ti. With ubuntu 14.04, cuda 7.0 or 7.5 and 35?. drivers overclocking was easily done. Genoil cudaminer thread where I found all the info I needed.

Hashbrown, you have 32-bit W10? Or 32-bit ccminer?