CCminer(SP-MOD) Modded GPU kernels.

[Cryptozillah]

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.

[chrysophylax]

In order to accept your facts I would have to believe three things:

1. your particular 750ti's can't perform to the same level as any others,
2. for some unique reason you don't suffer the 10% loss in performance between 6.5 and 7.5 that anyone else experiences,
3. it's just a coincidence that your hash rates are lower by the same amount of degradation expected between 6.5 and 7.5.

If it was happening to me and potentially costing me 300 KH per card I'd want to get to the bottom of it.

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

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%.

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

[AzzAz]

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.

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

[Cryptozillah]

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.

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

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.

[AzzAz]

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.

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

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.

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!

[Cryptozillah]

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.

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

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.

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 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.

[bathrobehero]

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.

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

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.

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 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.

[Cryptozillah]

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

[zTheWolfz]

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

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.

[Cryptozillah]

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

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".
If its the miner then the swapfile may fix that.

I dont think it is the miner crashing, i am pretty sure it is the system shutting down.
GPU temps are around 65 degrees during full load so it is not a heat problem.

I now have 8GB ram in the rig and 16GB swap file, i will let it run unclocked now and see what happends.

[zTheWolfz]

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

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".
If its the miner then the swapfile may fix that.

I dont think it is the miner crashing, i am pretty sure it is the system shutting down.
GPU temps are around 65 degrees during full load so it is not a heat problem.

I now have 8GB ram in the rig and 16GB swap file, i will let it run unclocked now and see what happends.

Could be something like weak rail "IE 12v, 3.3, 5v" on  the PSU taking a dip under load tripping the PSU to shut down.

[Cryptozillah]

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

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".
If its the miner then the swapfile may fix that.

I dont think it is the miner crashing, i am pretty sure it is the system shutting down.
GPU temps are around 65 degrees during full load so it is not a heat problem.

I now have 8GB ram in the rig and 16GB swap file, i will let it run unclocked now and see what happends.

Could be something like weak rail "IE 12v, 3.3, 5v" on  the PSU taking a dip under load tripping the PSU to shut down.

I will let it run now and see if it is working better now.
If not i will start checking other stuff. I know this PSU is working perfectly, i have used all cables i use now in another rig before putting the 980s in it.

[zTheWolfz]

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

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".
If its the miner then the swapfile may fix that.

I dont think it is the miner crashing, i am pretty sure it is the system shutting down.
GPU temps are around 65 degrees during full load so it is not a heat problem.

I now have 8GB ram in the rig and 16GB swap file, i will let it run unclocked now and see what happends.

Could be something like weak rail "IE 12v, 3.3, 5v" on  the PSU taking a dip under load tripping the PSU to shut down.

I will let it run now and see if it is working better now.
If not i will start checking other stuff. I know this PSU is working perfectly, i have used all cables i use now in another rig before putting the 980s in it.

Okay if you say so but things in a computer go bad in a blink of a eye. I've done tech support for a major Motherboard Co. for over 20 years.
I've seen just about every type of a problem. Shut down is usually caused by heat, PSU or other faulty hardware.

[Cryptozillah]

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

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".
If its the miner then the swapfile may fix that.

I dont think it is the miner crashing, i am pretty sure it is the system shutting down.
GPU temps are around 65 degrees during full load so it is not a heat problem.

I now have 8GB ram in the rig and 16GB swap file, i will let it run unclocked now and see what happends.

Could be something like weak rail "IE 12v, 3.3, 5v" on  the PSU taking a dip under load tripping the PSU to shut down.

I will let it run now and see if it is working better now.
If not i will start checking other stuff. I know this PSU is working perfectly, i have used all cables i use now in another rig before putting the 980s in it.

Okay if you say so but things in a computer go bad in a blink of a eye. I've done tech support for a major Motherboard Co. for over 20 years.
I've seen just about every type of a problem. Shut down is usually caused by heat, PSU or other faulty hardware.

Yeah i know.
It is nothing going warm in this rig, it is standing next to a partly open window and i have been monitoring all the temps.
I will do some more troubleshooting if it wont run without problems now.

[zTheWolfz]

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

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".
If its the miner then the swapfile may fix that.

I dont think it is the miner crashing, i am pretty sure it is the system shutting down.
GPU temps are around 65 degrees during full load so it is not a heat problem.

I now have 8GB ram in the rig and 16GB swap file, i will let it run unclocked now and see what happends.

Could be something like weak rail "IE 12v, 3.3, 5v" on  the PSU taking a dip under load tripping the PSU to shut down.

I will let it run now and see if it is working better now.
If not i will start checking other stuff. I know this PSU is working perfectly, i have used all cables i use now in another rig before putting the 980s in it.

Okay if you say so but things in a computer go bad in a blink of a eye. I've done tech support for a major Motherboard Co. for over 20 years.
I've seen just about every type of a problem. Shut down is usually caused by heat, PSU or other faulty hardware.

Yeah i know.
It is nothing going warm in this rig, it is standing next to a partly open window and i have been monitoring all the temps.
I will do some more troubleshooting if it wont run without problems now.

GPU's now days throttle when over heated so unless a software is telling it to shut down the system at a certain temp point.
Then it wouldn't be that. The bios does have such a monitoring system for shut down of the motherboard if the MB or CPU crosses a certain point.
PSU's today "some not all" also have this monitoring system of temps & voltage on each rail and will shut down the system.
Good luck with the problem. Hope its fixed now.

[joblo]

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

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".
If its the miner then the swapfile may fix that.

I dont think it is the miner crashing, i am pretty sure it is the system shutting down.
GPU temps are around 65 degrees during full load so it is not a heat problem.

I now have 8GB ram in the rig and 16GB swap file, i will let it run unclocked now and see what happends.

Could be something like weak rail "IE 12v, 3.3, 5v" on  the PSU taking a dip under load tripping the PSU to shut down.

I will let it run now and see if it is working better now.
If not i will start checking other stuff. I know this PSU is working perfectly, i have used all cables i use now in another rig before putting the 980s in it.

Okay if you say so but things in a computer go bad in a blink of a eye. I've done tech support for a major Motherboard Co. for over 20 years.
I've seen just about every type of a problem. Shut down is usually caused by heat, PSU or other faulty hardware.

Yeah i know.
It is nothing going warm in this rig, it is standing next to a partly open window and i have been monitoring all the temps.
I will do some more troubleshooting if it wont run without problems now.

If the problem started immediately after instaling the 980s it's something related to that, possibly resource related,
heat, power or the cards themselves.

If it previously ran stable with the 980s it is more likely a HW failure.

The nature of the shutdown might give a clue. If the system powers off it's likely a power issue. If it drops to BIOS
it is likely some other protection tripping. If it reboots it's likely a simple HW fault or OS related.

If you have consistently reproduceable symptoms you can start juggling things around to see if things change. Since
you have other rigs available you can swap RAM, cables etc to try to move the symptoms, which would clearly identify
the faulty component.

[Cryptozillah]

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

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".
If its the miner then the swapfile may fix that.

I dont think it is the miner crashing, i am pretty sure it is the system shutting down.
GPU temps are around 65 degrees during full load so it is not a heat problem.

I now have 8GB ram in the rig and 16GB swap file, i will let it run unclocked now and see what happends.

Could be something like weak rail "IE 12v, 3.3, 5v" on  the PSU taking a dip under load tripping the PSU to shut down.

I will let it run now and see if it is working better now.
If not i will start checking other stuff. I know this PSU is working perfectly, i have used all cables i use now in another rig before putting the 980s in it.

Okay if you say so but things in a computer go bad in a blink of a eye. I've done tech support for a major Motherboard Co. for over 20 years.
I've seen just about every type of a problem. Shut down is usually caused by heat, PSU or other faulty hardware.

Yeah i know.
It is nothing going warm in this rig, it is standing next to a partly open window and i have been monitoring all the temps.
I will do some more troubleshooting if it wont run without problems now.

If the problem started immediately after instaling the 980s it's something related to that, possibly resource related,
heat, power or the cards themselves.

If it previously ran stable with the 980s it is more likely a HW failure.

The nature of the shutdown might give a clue. If the system powers off it's likely a power issue. If it drops to BIOS
it is likely some other protection tripping. If it reboots it's likely a simple HW fault or OS related.

If you have consistently reproduceable symptoms you can start juggling things around to see if things change. Since
you have other rigs available you can swap RAM, cables etc to try to move the symptoms, which would clearly identify
the faulty component.

The problem started right away and i was spending a few days to sort things out.
I have not been around when it is shutting down so i dont know exactly how it happends. But when i get back and see that it is offline it is completely turned off.
I am almost certain that it just totally crashes and shutting off like in a second, because when firing it back up i get a message that my system ran into a problem etc.
I have already swapped most parts when troubleshooting so i start to run out of options.

I hope it was memory related but time will tell

[bathrobehero]

The problem started right away and i was spending a few days to sort things out.
I have not been around when it is shutting down so i dont know exactly how it happends. But when i get back and see that it is offline it is completely turned off.
I am almost certain that it just totally crashes and shutting off like in a second, because when firing it back up i get a message that my system ran into a problem etc.
I have already swapped most parts when troubleshooting so i start to run out of options.

I hope it was memory related but time will tell

What problem? A standard disk checking or a post boot windows error message?

A sudden power loss never causes a post boot windows error message so that's useful information.

Based on your symptoms so far I would first change the riser cables, blow the dust out of the PCI-E slots and if that doesn't work I'd run the rig with only half the cards enabled and see if it crashes. Then I'd run the rig with the other half of the cards.

I had a few rigs randomly crashing periodically but mostly with cudaminer or if I used --cpu-priority 5 with ccminer. A couple of times it was with bad USB risers (no visual clues though).

[Cryptozillah]

The problem started right away and i was spending a few days to sort things out.
I have not been around when it is shutting down so i dont know exactly how it happends. But when i get back and see that it is offline it is completely turned off.
I am almost certain that it just totally crashes and shutting off like in a second, because when firing it back up i get a message that my system ran into a problem etc.
I have already swapped most parts when troubleshooting so i start to run out of options.

I hope it was memory related but time will tell

What problem? A standard disk checking or a post boot windows error message?

A sudden power loss never causes a post boot windows error message so that's useful information.

Based on your symptoms so far I would first change the riser cables, blow the dust out of the PCI-E slots and if that doesn't work I'd run the rig with only half the cards enabled and see if it crashes. Then I'd run the rig with the other half of the cards.

I had a few rigs randomly crashing periodically but mostly with cudaminer or if I used --cpu-affinity 5 with ccminer. A couple of times it was with bad USB risers (no visual clues though).

When i get back in to windows i get a black popup that say that your pc ran into a problem. If it happend again i will take a screenshot, but there is no specific info about what caused the problem.
If it wont work now i will switch the 980s with another 750Ti rig and see if that helps. That 750 rig is running fine as we speak.

But so far the 980 rig is running fine since i had some fixing done on it.

[tbearhere]

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.

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

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.

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 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.

@bathrobehero ....... What is a swapfile?   thx