Page 2 of 3
Re: PC freezes after installing new video card
Posted: Thu Aug 09, 2012 12:50 pm
by M&M_Dutch
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:
*
Code: Select all
*********************** Log Started 2012-08-08T20:19:23Z ***********************
20:19:23:************************* Folding@home Client *************************
20:19:23: Website: http://folding.stanford.edu/
20:19:23: Copyright: (c) 2009-2012 Stanford University
20:19:23: Author: Joseph Coffland <joseph@cauldrondevelopment.com>
20:19:23: Args: --lifeline 5936 --command-port=36330
20:19:23: Config: C:/Users/M&M/AppData/Roaming/FAHClient/config.xml
20:19:23:******************************** Build ********************************
20:19:23: Version: 7.1.52
20:19:23: Date: Mar 20 2012
20:19:23: Time: 19:37:42
20:19:23: SVN Rev: 3515
20:19:23: Branch: fah/trunk/client
20:19:23: Compiler: Intel(R) C++ MSVC 1500 mode 1200
20:19:23: Options: /TP /nologo /EHa /Qdiag-disable:4297,4103,1786,279 /Ox -arch:SSE
20:19:23: /QaxSSE2,SSE3,SSSE3,SSE4.1,SSE4.2 /Qopenmp /Qrestrict /MT
20:19:23: Platform: win32 XP
20:19:23: Bits: 32
20:19:23: Mode: Release
20:19:23:******************************* System ********************************
20:19:23: CPU: AMD Athlon(tm) II X2 250 Processor
20:19:23: CPU ID: AuthenticAMD Family 16 Model 6 Stepping 3
20:19:23: CPUs: 2
20:19:23: Memory: 3.50GiB
20:19:23: Free Memory: 1.77GiB
20:19:23: Threads: WINDOWS_THREADS
20:19:23: On Battery: false
20:19:23: UTC offset: 2
20:19:23: PID: 5000
20:19:23: CWD: C:/Users/M&M/AppData/Roaming/FAHClient
20:19:23: OS: Windows 7 Home Premium Service Pack 1
20:19:23: OS Arch: X86
20:19:23: GPUs: 1
20:19:23: GPU 0: FERMI:1 GF108 [GeForce GT 520]
20:19:23: CUDA: 2.1
20:19:23: CUDA Driver: 4020
20:19:23:Win32 Service: false
20:19:23:***********************************************************************
20:19:23:<config>
20:19:23: <!-- FahCore Control -->
20:19:23: <cpu-usage v='50'/>
20:19:23:
20:19:23: <!-- Folding Slot Configuration -->
20:19:23: <gpu v='true'/>
20:19:23:
20:19:23: <!-- Network -->
20:19:23: <proxy v=':8080'/>
20:19:23:
20:19:23: <!-- User Information -->
20:19:23: <passkey v='********************************'/>
20:19:23: <user v='Martin71'/>
20:19:23:
20:19:23: <!-- Folding Slots -->
20:19:23: <slot id='0' type='GPU'/>
20:19:23: <slot id='1' type='SMP'/>
20:19:23:</config>
20:19:23:Trying to access database...
20:19:23:Successfully acquired database lock
20:19:23:Enabled folding slot 00: READY gpu:0:"GF108 [GeForce GT 520]"
20:19:23:Enabled folding slot 01: READY smp:2
20:19:23:WU00:FS00:Starting
20:19:23:WU00:FS00:Running FahCore: "C:\Program Files\FAHClient/FAHCoreWrapper.exe" C:/Users/M&M/AppData/Roaming/FAHClient/cores/www.stanford.edu/~pande/Win32/x86/NVIDIA/Fermi/Core_15.fah/FahCore_15.exe -dir 00 -suffix 01 -version 701 -lifeline 5000 -checkpoint 15 -cpu 50 -gpu 0
20:19:24:WU00:FS00:Started FahCore on PID 6044
20:19:24:WU00:FS00:Core PID:1272
20:19:24:WU00:FS00:FahCore 0x15 started
20:19:24:WU01:FS01:Starting
20:19:24:WU01:FS01:Running FahCore: "C:\Program Files\FAHClient/FAHCoreWrapper.exe" C:/Users/M&M/AppData/Roaming/FAHClient/cores/www.stanford.edu/~pande/Win32/x86/Core_a4.fah/FahCore_a4.exe -dir 01 -suffix 01 -version 701 -lifeline 5000 -checkpoint 15 -cpu 50 -np 2
20:19:24:WU01:FS01:Started FahCore on PID 4076
20:19:24:WU01:FS01:Core PID:1584
20:19:24:WU01:FS01:FahCore 0xa4 started
20:19:25:WU00:FS00:0x15:
20:19:25:WU00:FS00:0x15:*------------------------------*
20:19:25:WU00:FS00:0x15:Folding@Home GPU Core
20:19:25:WU00:FS00:0x15:Version 2.22 (Thu Dec 8 17:08:05 PST 2011)
20:19:25:WU00:FS00:0x15:Build host SimbiosNvdWin7
20:19:25:WU00:FS00:0x15:Board Type NVIDIA/CUDA
20:19:25:WU00:FS00:0x15:Core 15
20:19:25:WU00:FS00:0x15:
20:19:25:WU00:FS00:0x15:Window's signal control handler registered.
20:19:25:WU00:FS00:0x15:Preparing to commence simulation
20:19:25:WU00:FS00:0x15:- Ensuring status. Please wait.
20:19:25:WU01:FS01:0xa4:
20:19:25:WU01:FS01:0xa4:*------------------------------*
20:19:25:WU01:FS01:0xa4:Folding@Home Gromacs GB Core
20:19:25:WU01:FS01:0xa4:Version 2.27 (Dec. 15, 2010)
20:19:25:WU01:FS01:0xa4:
20:19:25:WU01:FS01:0xa4:Preparing to commence simulation
20:19:25:WU01:FS01:0xa4:- Ensuring status. Please wait.
20:19:25:Server connection id=1 on 0.0.0.0:36330 from 127.0.0.1
20:19:34:WU00:FS00:0x15:- Looking at optimizations...
20:19:34:WU00:FS00:0x15:- Working with standard loops on this execution.
20:19:34:WU00:FS00:0x15:- Previous termination of core was improper.
20:19:34:WU00:FS00:0x15:- Files status OK
20:19:34:WU00:FS00:0x15:sizeof(CORE_PACKET_HDR) = 512 file=<>
20:19:34:WU00:FS00:0x15:- Expanded 145762 -> 660994 (decompressed 453.4 percent)
20:19:34:WU00:FS00:0x15:Called DecompressByteArray: compressed_data_size=145762 data_size=660994, decompressed_data_size=660994 diff=0
20:19:34:WU00:FS00:0x15:- Digital signature verified
20:19:34:WU00:FS00:0x15:
20:19:34:WU00:FS00:0x15:Project: 8020 (Run 6, Clone 96, Gen 65)
20:19:34:WU00:FS00:0x15:
20:19:34:WU01:FS01:0xa4:- Looking at optimizations...
20:19:34:WU01:FS01:0xa4:- Working with standard loops on this execution.
20:19:34:WU01:FS01:0xa4:- Previous termination of core was improper.
20:19:34:WU01:FS01:0xa4:- Files status OK
20:19:34:WU01:FS01:0xa4:- Expanded 663732 -> 1297016 (decompressed 195.4 percent)
20:19:34:WU01:FS01:0xa4:Called DecompressByteArray: compressed_data_size=663732 data_size=1297016, decompressed_data_size=1297016 diff=0
20:19:34:WU01:FS01:0xa4:- Digital signature verified
20:19:34:WU01:FS01:0xa4:
20:19:34:WU01:FS01:0xa4:Project: 7200 (Run 64, Clone 1, Gen 96)
20:19:34:WU01:FS01:0xa4:
20:19:35:WU00:FS00:0x15:Entering M.D.
20:19:35:WU01:FS01:0xa4:Entering M.D.
20:19:37:WU00:FS00:0x15:Tpr hash 00/wudata_01.tpr: 1683059068 2767363101 755140606 1123046367 2505376551
20:19:37:WU00:FS00:0x15:GPU device info: vendor=0 device=0 name=<NA> match=0
20:19:37:WU00:FS00:0x15:Working on Gromacs Runs On Most of All Computer Systems
20:19:37:WU00:FS00:0x15:Client config unavailable.
20:19:37:WU00:FS00:0x15:Starting GUI Server
20:19:41:WU01:FS01:0xa4:Using Gromacs checkpoints
20:19:41:WU01:FS01:0xa4:Mapping NT from 2 to 2
20:19:43:WU01:FS01:0xa4:Resuming from checkpoint
20:19:43:WU01:FS01:0xa4:Verified 01/wudata_01.log
20:19:43:WU01:FS01:0xa4:Verified 01/wudata_01.trr
20:19:44:WU01:FS01:0xa4:Verified 01/wudata_01.xtc
20:19:44:WU01:FS01:0xa4:Verified 01/wudata_01.edr
20:19:45:WU01:FS01:0xa4:Completed 295330 out of 750000 steps (39%)
20:20:00:Server connection id=2 on 0.0.0.0:36330 from 127.0.0.1
20:20:44:Server connection id=2 ended
20:20:49:WU00:FS00:0x15:Setting checkpoint frequency: 250000
20:20:49:WU00:FS00:0x15:Completed 3 out of 25000000 steps (0%).
20:20:50:WARNING:WU00:FS00:Detected clock skew, adjusting time estimates
20:23:54:Server connection id=1 ended
20:24:11:Server connection id=3 on 0.0.0.0:36330 from 127.0.0.1
20:24:28:Server connection id=3 ended
20:24:47:Server connection id=4 on 0.0.0.0:36330 from 127.0.0.1
*
mod edit: added code tags
Re: PC freezes after installing new video card
Posted: Thu Aug 09, 2012 1:26 pm
by P5-133XL
The log looks normal...
Re: PC freezes after installing new video card
Posted: Thu Aug 09, 2012 1:35 pm
by uncle_fungus
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).
Re: PC freezes after installing new video card
Posted: Thu Aug 09, 2012 2:11 pm
by M&M_Dutch
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?
[
Re: PC freezes after installing new video card
Posted: Thu Aug 09, 2012 6:27 pm
by toTOW
The limit CPU usage function is not working with modern cores as fas as I remember (this include all cores other than core 78).
Re: PC freezes after installing new video card
Posted: Thu Aug 09, 2012 6:31 pm
by jimerickson
just set it run on half the threads.
Re: PC freezes after installing new video card
Posted: Thu Aug 09, 2012 6:39 pm
by 7im
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...
Re: PC freezes after installing new video card
Posted: Thu Aug 09, 2012 8:30 pm
by M&M_Dutch
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
Re: PC freezes after installing new video card
Posted: Fri Aug 10, 2012 7:18 am
by M&M_Dutch
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.
Re: PC freezes after installing new video card
Posted: Fri Aug 10, 2012 12:56 pm
by P5-133XL
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.
Re: PC freezes after installing new video card
Posted: Fri Aug 10, 2012 1:15 pm
by 7im
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.
Re: PC freezes after installing new video card
Posted: Fri Aug 10, 2012 1:31 pm
by uncle_fungus
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.
Re: PC freezes after installing new video card
Posted: Fri Aug 10, 2012 2:02 pm
by 7im
Nevermind, missed the cpu type, based the comment on the reported cpu uasge. UF is correct. Change nothiung.
Re: PC freezes after installing new video card
Posted: Sun Aug 12, 2012 11:33 am
by M&M_Dutch
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.
Code: Select all
Log Started 2012-08-12T10:58:04Z ***********************]
10:58:04:************************* Folding@home Client *************************
10:58:04: Website: http://folding.stanford.edu/
10:58:04: Copyright: (c) 2009-2012 Stanford University
10:58:04: Author: Joseph Coffland <joseph@cauldrondevelopment.com>
10:58:04: Args: --lifeline 3752 --command-port=36330
10:58:04: Config: C:/Users/M&M/AppData/Roaming/FAHClient/config.xml
10:58:04:******************************** Build ********************************
10:58:04: Version: 7.1.52
10:58:04: Date: Mar 20 2012
10:58:04: Time: 19:37:42
10:58:04: SVN Rev: 3515
10:58:04: Branch: fah/trunk/client
10:58:04: Compiler: Intel(R) C++ MSVC 1500 mode 1200
10:58:04: Options: /TP /nologo /EHa /Qdiag-disable:4297,4103,1786,279 /Ox -arch:SSE
10:58:04: /QaxSSE2,SSE3,SSSE3,SSE4.1,SSE4.2 /Qopenmp /Qrestrict /MT
10:58:04: Platform: win32 XP
10:58:04: Bits: 32
10:58:04: Mode: Release
10:58:04:******************************* System ********************************
10:58:04: CPU: AMD Athlon(tm) II X2 250 Processor
10:58:04: CPU ID: AuthenticAMD Family 16 Model 6 Stepping 3
10:58:04: CPUs: 2
10:58:04: Memory: 3.50GiB
10:58:04: Free Memory: 2.29GiB
10:58:04: Threads: WINDOWS_THREADS
10:58:04: On Battery: false
10:58:04: UTC offset: 2
10:58:04: PID: 4284
10:58:04: CWD: C:/Users/M&M/AppData/Roaming/FAHClient
10:58:04: OS: Windows 7 Home Premium Service Pack 1
10:58:04: OS Arch: X86
10:58:04: GPUs: 1
10:58:04: GPU 0: FERMI:1 GF108 [GeForce GT 520]
10:58:04: CUDA: 2.1
10:58:04: CUDA Driver: 4020
10:58:04:Win32 Service: false
10:58:04:***********************************************************************
10:58:04:<config>
10:58:04: <!-- Folding Slot Configuration -->
10:58:04: <gpu v='true'/>
10:58:04:
10:58:04: <!-- Network -->
10:58:04: <proxy v=':8080'/>
10:58:04:
10:58:04: <!-- User Information -->
10:58:04: <passkey v='********************************'/>
10:58:04: <user v='Martin71'/>
10:58:04:
10:58:04: <!-- Folding Slots -->
10:58:04: <slot id='2' type='UNIPROCESSOR'/>
10:58:04: <slot id='0' type='UNIPROCESSOR'/>
10:58:04:</config>
10:58:04:Trying to access database...
10:58:05:Successfully acquired database lock
10:58:05:Enabled folding slot 02: READY uniprocessor
10:58:05:Enabled folding slot 00: READY uniprocessor
10:58:05:WU02:FS00:Starting
10:58:05:WU02:FS00:Running FahCore: "C:\Program Files\FAHClient/FAHCoreWrapper.exe" C:/Users/M&M/AppData/Roaming/FAHClient/cores/www.stanford.edu/~pande/Win32/x86/Core_a4.fah/FahCore_a4.exe -dir 02 -suffix 01 -version 701 -lifeline 4284 -checkpoint 15
10:58:05:WU02:FS00:Started FahCore on PID 4448
10:58:05:WU02:FS00:Core PID:4464
10:58:05:WU02:FS00:FahCore 0xa4 started
10:58:06:WU01:FS02:Starting
10:58:06:WU01:FS02:Running FahCore: "C:\Program Files\FAHClient/FAHCoreWrapper.exe" C:/Users/M&M/AppData/Roaming/FAHClient/cores/www.stanford.edu/~pande/Win32/x86/Core_a4.fah/FahCore_a4.exe -dir 01 -suffix 01 -version 701 -lifeline 4284 -checkpoint 15
10:58:06:WU01:FS02:Started FahCore on PID 4492
10:58:06:WU01:FS02:Core PID:4504
10:58:06:WU01:FS02:FahCore 0xa4 started
10:58:06:WU02:FS00:0xa4:
10:58:06:WU02:FS00:0xa4:*------------------------------*
10:58:06:WU02:FS00:0xa4:Folding@Home Gromacs GB Core
10:58:06:WU02:FS00:0xa4:Version 2.27 (Dec. 15, 2010)
10:58:06:WU02:FS00:0xa4:
10:58:06:WU02:FS00:0xa4:Preparing to commence simulation
10:58:06:WU02:FS00:0xa4:- Ensuring status. Please wait.
10:58:06:WU01:FS02:0xa4:
10:58:06:WU01:FS02:0xa4:*------------------------------*
10:58:06:WU01:FS02:0xa4:Folding@Home Gromacs GB Core
10:58:06:WU01:FS02:0xa4:Version 2.27 (Dec. 15, 2010)
10:58:06:WU01:FS02:0xa4:
10:58:06:WU01:FS02:0xa4:Preparing to commence simulation
10:58:06:WU01:FS02:0xa4:- Ensuring status. Please wait.
10:58:08:Server connection id=1 on 0.0.0.0:36330 from 127.0.0.1
10:58:15:WU02:FS00:0xa4:- Looking at optimizations...
10:58:15:WU02:FS00:0xa4:- Working with standard loops on this execution.
10:58:15:WU02:FS00:0xa4:- Previous termination of core was improper.
10:58:15:WU02:FS00:0xa4:- Going to use standard loops.
10:58:15:WU02:FS00:0xa4:- Files status OK
10:58:15:WU02:FS00:0xa4:- Expanded 546749 -> 1326096 (decompressed 242.5 percent)
10:58:15:WU02:FS00:0xa4:Called DecompressByteArray: compressed_data_size=546749 data_size=1326096, decompressed_data_size=1326096 diff=0
10:58:15:WU02:FS00:0xa4:- Digital signature verified
10:58:15:WU02:FS00:0xa4:
10:58:15:WU02:FS00:0xa4:Project: 8014 (Run 5, Clone 586, Gen 75)
10:58:15:WU02:FS00:0xa4:
10:58:15:WU01:FS02:0xa4:- Looking at optimizations...
10:58:15:WU01:FS02:0xa4:- Working with standard loops on this execution.
10:58:15:WU01:FS02:0xa4:- Previous termination of core was improper.
10:58:15:WU01:FS02:0xa4:- Going to use standard loops.
10:58:15:WU01:FS02:0xa4:- Files status OK
10:58:15:WU02:FS00:0xa4:Entering M.D.
10:58:16:WU01:FS02:0xa4:- Expanded 546947 -> 1326096 (decompressed 242.4 percent)
10:58:16:WU01:FS02:0xa4:Called DecompressByteArray: compressed_data_size=546947 data_size=1326096, decompressed_data_size=1326096 diff=0
10:58:16:WU01:FS02:0xa4:- Digital signature verified
10:58:16:WU01:FS02:0xa4:
10:58:16:WU01:FS02:0xa4:Project: 8014 (Run 5, Clone 537, Gen 38)
10:58:16:WU01:FS02:0xa4:
10:58:16:WU01:FS02:0xa4:Entering M.D.
10:58:22:WU02:FS00:0xa4:Using Gromacs checkpoints
10:58:22:WU02:FS00:0xa4:Mapping NT from 1 to 1
10:58:22:WU01:FS02:0xa4:Using Gromacs checkpoints
10:58:22:WU01:FS02:0xa4:Mapping NT from 1 to 1
10:58:25:WU01:FS02:0xa4:Resuming from checkpoint
10:58:26:WU02:FS00:0xa4:Resuming from checkpoint
10:58:26:WU02:FS00:0xa4:Verified 02/wudata_01.log
10:58:26:WU02:FS00:0xa4:Verified 02/wudata_01.trr
10:58:26:WU01:FS02:0xa4:Verified 01/wudata_01.log
10:58:26:WU01:FS02:0xa4:Verified 01/wudata_01.trr
10:58:26:WU02:FS00:0xa4:Verified 02/wudata_01.xtc
10:58:26:WU02:FS00:0xa4:Verified 02/wudata_01.edr
10:58:26:WU01:FS02:0xa4:Verified 01/wudata_01.xtc
10:58:26:WU01:FS02:0xa4:Verified 01/wudata_01.edr
10:58:26:WU02:FS00:0xa4:Completed 97750 out of 250000 steps (39%)
10:58:26:WU01:FS02:0xa4:Completed 235220 out of 250000 steps (94%)
11:02:38:Server connection id=2 on 0.0.0.0:36330 from 127.0.0.1
11:02:52:Server connection id=2 ended
11:05:01:WU02:FS00:0xa4:Completed 100000 out of 250000 steps (40%)
11:07:23:WU01:FS02:0xa4:Completed 237500 out of 250000 steps (95%)
11:11:57:WU02:FS00:0xa4:Completed 102500 out of 250000 steps (41%)
11:14:19:WU01:FS02:0xa4:Completed 240000 out of 250000 steps (96%)
11:18:40:WU02:FS00:0xa4:Completed 105000 out of 250000 steps (42%)
11:20:46:WU01:FS02:0xa4:Completed 242500 out of 250000 steps (97%)
11:21:52:Server connection id=3 on 0.0.0.0:36330 from 127.0.0.1
11:22:16:Server connection id=3 ended
changed text tags to code tags
Re: PC freezes after installing new video card
Posted: Sun Aug 12, 2012 1:01 pm
by P5-133XL
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.