It seems that a lot of GPU problems revolve around specific versions of drivers. Though NVidia has their own support structure, you can often learn from information reported by others who fold.
P5-133XL wrote:Perhaps I'm missing something but 7.1.52 has a log file too: Start->all Programs->FAHClient->Data Directory->Log.txt and if necessary go into the logs folder to get older logs.
You're so right. I didn't know this particular method (never had to do it) I'm learning new things as this problem progresses Here is the log.txt-file:
When you looked at task manager could you remember which processes had the highest CPU usage? If the CPU usage was at 100% it sounds like 1 of the FahCores was not honouring the 50% CPU time option (Or, they were both using and entire core each).
uncle_fungus wrote:When you looked at task manager could you remember which processes had the highest CPU usage? If the CPU usage was at 100% it sounds like 1 of the FahCores was not honouring the 50% CPU time option (Or, they were both using and entire core each).
I believed it was the core "FahCore_a4.exe" that led to a CPU usage of almost 98%. I've made a screendump of the taskmanager (CPU 65%), how do I upload it?
Hardware configuration: Intel i7-4770K @ 4.5 GHz, 16 GB DDR3-2133 Corsair Vengence (black/red), EVGA GTX 760 @ 1200 MHz, on an Asus Maximus VI Hero MB (black/red), in a blacked out Antec P280 Tower, with a Xigmatek Night Hawk (black) HSF, Seasonic 760w Platinum (black case, sleeves, wires), 4 SilenX 120mm Case fans with silicon fan gaskets and silicon mounts (all black), a 512GB Samsung SSD (black), and a 2TB Black Western Digital HD (silver/black).
CPU usage setting works well on 1 CPU core (thread), real or virtual. In CPU client, very effective. On SMP, not so much, especially if you have HT. Even if set to 1% on SMP, it's not much different than folding SMP -8 vs. SMP -7 on a quad core with HT. The PPD just doesn't change as that one virtual thread really doesn't do much the other 3 virtual threads can't handle...
Don't ask me me how, but removing (in expert-modus) "smp" and "GPU" (tab "slots") and configuring the folding slot to "Uniprocessor" (with default values) did seem to do the trick. It works for now, but it is not a final solution. The CPU load is very low (<30), way below the 50% I've set. My friend helped me with this, so I cannot tell all the details yet. I hope to have more info this weekend.......Oh, and I haven't adjusted the BIOS yet
M&M_Dutch wrote:Don't ask me me how, but removing (in expert-modus) "smp" and "GPU" (tab "slots") and configuring the folding slot to "Uniprocessor" (with default values) did seem to do the trick. It works for now, but it is not a final solution. The CPU load is very low (<30), way below the 50% I've set. My friend helped me with this, so I cannot tell all the details yet. I hope to have more info this weekend.......Oh, and I haven't adjusted the BIOS yet
As it would seem, this IS the final en proper solution, at least in my case. I've set the usage of the CPU to 100% and even then the CPU load remains below 25% My pc is also running perfectly.This topic may be closed. I want thank anyone who has responded en tried to help me. Again, thank you all.
Hardware configuration: Intel i7-4770K @ 4.5 GHz, 16 GB DDR3-2133 Corsair Vengence (black/red), EVGA GTX 760 @ 1200 MHz, on an Asus Maximus VI Hero MB (black/red), in a blacked out Antec P280 Tower, with a Xigmatek Night Hawk (black) HSF, Seasonic 760w Platinum (black case, sleeves, wires), 4 SilenX 120mm Case fans with silicon fan gaskets and silicon mounts (all black), a 512GB Samsung SSD (black), and a 2TB Black Western Digital HD (silver/black).
The Uniprocessor Slot does exactly what the name implies. It uses one and only one of your multiple CPU cores, hence the 1 of 4 or 25% usage.
To get up to 50%, I recommend going back to an SMP slot, but reducing the cores used setting from 4 to 2. This same thing was recommended a few posts back.
7im wrote:The Uniprocessor Slot does exactly what the name implies. It uses one and only one of your multiple CPU cores, hence the 1 of 4 or 25% usage.
To get up to 50%, I recommend going back to an SMP slot, but reducing the cores used setting from 4 to 2. This same thing was recommended a few posts back.
Actually, not quite. He has a dual core machine, thus if he wants to limit CPU usage SMP in any form isn't going to work. Starting a single slot in uniprocessor mode with usage set to 100% will though, as it will use 100% of only one of the 2 cores = 50% overall.
Hardware configuration: Intel i7-4770K @ 4.5 GHz, 16 GB DDR3-2133 Corsair Vengence (black/red), EVGA GTX 760 @ 1200 MHz, on an Asus Maximus VI Hero MB (black/red), in a blacked out Antec P280 Tower, with a Xigmatek Night Hawk (black) HSF, Seasonic 760w Platinum (black case, sleeves, wires), 4 SilenX 120mm Case fans with silicon fan gaskets and silicon mounts (all black), a 512GB Samsung SSD (black), and a 2TB Black Western Digital HD (silver/black).
P5-133XL wrote:Could you supply the current log? Also, examine the process tab of the Task Manager reporting back the % CPU for the FAH_CoreXX.exe listings.
I don't see anything wrong. It should be running at 100% with two uniprocessor cores. If you want 50% CPU usage, I would suggest just using a single uniprocessor slot rather than setting the CPU slider to 50% as more reliable.
You should not notice any difference in how your system runs between running at 100% vs 50%. The Windows priority system should effectively always give any application your are running preference over folding (Folding just gets suspended until you are no longer using the CPU).
I don't have any solution to your original PC crashing when GPU folding problem because I don't know what is causing it. I'm not even sure that they are crashes from your description for a lockup should effectively prevent you from even determining what the CPU% is, or even be able to shut down folding. Further, you have never said what processes are using the CPU when it happens so I don't know if it is folding that is driving the CPU usage way high or something else.
What I think was happening is that you had a SMP slot that is designed to run at 100% (The CPU slider bar doesn't apply to SMP slots or GPU slots) running and you were experiencing severe GPU lag which is a known problem that has no good solutions. There are things that help with the lag for example running an AERO theme and picking the right video driver (Some driver versions do poorly and some are much better with video lag).
If my interpretation of your description of your symptoms is wrong any you are actually crashing your machine when folding with the GPU then we are probably dealing with power/temp problems or you have an outright bad video card but those are only the most likely problems and it could be quite hard to diagnose.
If you want to experiment further, then to start out with I'd do just one slot at a time and vary it from uniprocessor, SMP, and GPU and see the effects each one does independent of the others. The goal is to keep the number of variables down to just one. Use the KISS principal.
