Project 7640 !!!!

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Mactin
Posts: 222
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Location: Côte-des-Neiges, Montréal, Québec

Project 7640 !!!!

Post by Mactin »

My Client Martin_i7-875k_GTX560Ti has received it's first p7640 since it when to "Advanced"
http://foldingforum.org/viewtopic.php?f=24&t=21082

I think that the advanced status for this series of projects is a bit premature.
It is folding very slow because it fails to properly utilise the GPU, using 79%-80% of it.
A little more debugging is required in my opinion.

I am running v6.41r2 and folding p7640-r42-c0-g3 using core 2.22
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7im
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Location: Arizona
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Re: Project 7640 !!!!

Post by 7im »

As the work units get larger and more complex, the GPU may no longer be able to run them at 100% usage if the PCIe bandwidth can't keep up.

See also the Pande Group comment on this project in this already existing topic: viewtopic.php?f=74&t=21180
How to provide enough information to get helpful support
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GreyWhiskers
Posts: 660
Joined: Mon Oct 25, 2010 5:57 am
Hardware configuration: a) Main unit
Sandybridge in HAF922 w/200 mm side fan
--i7 2600K@4.2 GHz
--ASUS P8P67 DeluxeB3
--4GB ADATA 1600 RAM
--750W Corsair PS
--2Seagate Hyb 750&500 GB--WD Caviar Black 1TB
--EVGA 660GTX-Ti FTW - Signature 2 GPU@ 1241 Boost
--MSI GTX560Ti @900MHz
--Win7Home64; FAH V7.3.2; 327.23 drivers

b) 2004 HP a475c desktop, 1 core Pent 4 HT@3.2 GHz; Mem 2GB;HDD 160 GB;Zotac GT430PCI@900 MHz
WinXP SP3-32 FAH v7.3.6 301.42 drivers - GPU slot only

c) 2005 Toshiba M45-S551 laptop w/2 GB mem, 160GB HDD;Pent M 740 CPU @ 1.73 GHz
WinXP SP3-32 FAH v7.3.6 [Receiving Core A4 work units]
d) 2011 lappy-15.6"-1920x1080;i7-2860QM,2.5;IC Diamond Thermal Compound;GTX 560M 1,536MB u/c@700;16GB-1333MHz RAM;HDD:500GBHyb w/ 4GB SSD;Win7HomePrem64;320.18 drivers FAH 7.4.2ß
Location: Saratoga, California USA

Re: Project 7640 !!!!

Post by GreyWhiskers »

After my GTX560Ti successfully folded two 7641s, it was next served a 7640 (Run 31, Clone 0, Gen 4). In all of these, my GPU utilization was running around [EDIT] 88%, with correspondingly lower GPU temps [EDIT] 59 deg C. and system wall-plug power draw [EDIT] 324 Watts vs 360 Watts than for the thousands of other GPU WUs in the last year on this card. I thought I'd try to add a little more OC (from 948 to 953) to see what that would do to the TPF.

I woke up this morning to find that there had been four UNSTABLE MACHINE errors (see below) on this WU after 8, 12, 30 and 9 frames. I brought the OC down to 945, and it's stable again (I think) - having completed 55 frames now. The TPF difference is imperceptible between the 953 and 945 clocks, but the stability seems to be either an artifact of the project, or a wall for the GPU at the stock voltage.
mdrun_gpu returned 52
[10:03:06] NANs detected on GPU
[10:03:06]
[10:03:06] Folding@home Core Shutdown: UNSTABLE_MACHINE
Last edited by GreyWhiskers on Sat Mar 24, 2012 10:37 pm, edited 1 time in total.
7im
Posts: 10189
Joined: Thu Nov 29, 2007 4:30 pm
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).
Location: Arizona
Contact:

Re: Project 7640 !!!!

Post by 7im »

[quote="7im"]As the work units get larger and more complex, the GPU may no longer be able to run them at 100% usage if the PCIe bandwidth can't keep up.

See also the Pande Group comment on this project in this already existing topic: viewtopic.php?f=74&t=21180


It was suggested that the above statement was not completely accurate. I apologize if the statement mislead someone to assume I meant TOTAL bandwidth was the gating factor. Eagle, in the other thread, suggests the limitation is the latency of the PCIe bus. And since latency is an integral factor of PCIe bandwidth, I did not feel a need to make that technical distinction.

It also does not change the result. FAH may or may not be able to code around it.
How to provide enough information to get helpful support
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sswilson
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Gigabyte P35-DQ6 / Q6600 / 2X 1G 1066 Firestix / "Baked" XFX GTX 280 (RIP again :( ) / MSI GTS 450 Cyclone OC /PC P&C 750W Silencer / MCR220-QP-Res / DD DDCPX-Pro / Apogee GT / Highspeed PC Tech Station / Samsung 931BF / BenQ Q9T4
Location: Moncton, New Brunswick, Canada

Re: Project 7640 !!!!

Post by sswilson »

Where did the linked thread go?

edit: Is this the one?

http://foldingforum.org/viewtopic.php?f=74&t=21177
P5-133XL
Posts: 2948
Joined: Sun Dec 02, 2007 4:36 am
Hardware configuration: Machine #1:

Intel Q9450; 2x2GB=8GB Ram; Gigabyte GA-X48-DS4 Motherboard; PC Power and Cooling Q750 PS; 2x GTX 460; Windows Server 2008 X64 (SP1).

Machine #2:

Intel Q6600; 2x2GB=4GB Ram; Gigabyte GA-X48-DS4 Motherboard; PC Power and Cooling Q750 PS; 2x GTX 460 video card; Windows 7 X64.

Machine 3:

Dell Dimension 8400, 3.2GHz P4 4x512GB Ram, Video card GTX 460, Windows 7 X32

I am currently folding just on the 5x GTX 460's for aprox. 70K PPD
Location: Salem. OR USA

Re: Project 7640 !!!!

Post by P5-133XL »

Someone merged the two threads.
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bruce
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Location: So. Cal.

Re: Project 7640 !!!!

Post by bruce »

sswilson wrote:Where did the linked thread go?

edit: Is this the one?

http://foldingforum.org/viewtopic.php?f=74&t=21177
Either that one or this one: viewtopic.php?f=74&t=21180
Ripper36
Posts: 60
Joined: Sun Sep 18, 2011 8:55 am

Re: Project 7640 !!!!

Post by Ripper36 »

There are now so many threads discussing the same issue it is very hard to follow - mjay I suggest we all take it to bruce's thread on statistics ... viewtopic.php?f=74&t=21223&start=0
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