A special request for ATI 4xxx/5xxx owners (memory testing)

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A special request for ATI 4xxx/5xxx owners (memory testing)

Postby ihaque » Sun Sep 26, 2010 9:59 pm

Hi all,

You all are waiting for an OpenCL GPU FAH client, I know. I'm sorry to say I don't have one for you right now...but I do have another piece of OpenCL software that's fun for the whole family! And if you own an OpenCL-capable ATI/AMD board, I have a request for you.

I'll be presenting a study on GPU memory reliability in a couple weeks, but all I have is data on Nvidia boards (and mostly non-Fermi at that). That previous data shows that the typical failure modes of boards depend dramatically on GPU architecture; it's reasonable to surmise that there might be a difference, then, between ATI and Nvidia, but I've got no data to back this up quite yet. So that's what I need :).

The proposition is simple: if you own an ATI 4000 or 5000-series GPU, please download MemtestCL and run as much of it as you're willing over the next two weeks, making sure to allow it to report results back to Stanford. Running more test iterations and a larger amount of memory is useful (to a point: if the amount of memory is too large, you may get timeout errors), but I'll take whatever data I can get. If you have multiple GPUs, it'd be great if you could run it on as many as possible. If you want to run it on your CPU or Nvidia board (heaven forfend that anyone in this subforum would have one of those ;)), all data is welcome!

You won't get any Folding@home points for doing this, but you will have my gratitude. If I find an interesting pattern in the data, I'll update this thread after my presentation.

Imran

* MemtestCL can be downloaded here: http://folding.stanford.edu/English/DownloadUtils. Installation instructions in this post: viewtopic.php?p=155637#p155637.

* If you want to loop the test, there's an example batch script in this post: viewtopic.php?p=142297#p142297. It was written for MemtestG80, but basically all you have to do is change "memtestg80" to "memtestcl" and it should pretty much work - you may have to add a command line option to auto-select device and platform.

PS - Also, please pass this request on to your folding teammates :D

PPS - Some of you may remember a similar thread back in the spring. That was for Fermi, this is for ATI. Though more Fermi data is good too...
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Re: A special request for ATI 4xxx/5xxx owners (memory testing)

Postby k1wi » Mon Sep 27, 2010 8:43 am

Will fire up the 4770 to this... Will let you know how it goes & put it on a loop.
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Re: A special request for ATI 4xxx/5xxx owners (memory testing)

Postby metal03326 » Mon Sep 27, 2010 9:48 am

I have only 2600 XT :(
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Re: A special request for ATI 4xxx/5xxx owners (memory testing)

Postby 7im » Mon Sep 27, 2010 4:26 pm

metal03326 wrote:I have only 2600 XT :(


You can run it on your PC! ;)

ihaque wrote:If you want to run it on your CPU...
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Re: A special request for ATI 4xxx/5xxx owners (memory testing)

Postby metal03326 » Mon Sep 27, 2010 4:30 pm

Yes, I have ran it one time - I know I can, but the request is for 4xxx/5xxx only.
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Re: A special request for ATI 4xxx/5xxx owners (memory testing)

Postby Tobit » Mon Sep 27, 2010 4:45 pm

I've alerted my teammates of this and a couple have started running it. I don't have any ATI hardware at the moment or I'd run it as well.
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Re: A special request for ATI 4xxx/5xxx owners (memory testing)

Postby PantherX » Mon Sep 27, 2010 5:24 pm

I have posted it on my teams F@H Forum so hopefully you will get results.
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Re: A special request for ATI 4xxx/5xxx owners (memory testing)

Postby Ivoshiee » Mon Sep 27, 2010 5:29 pm

I let it run for a while. How long, I do not know, but some time later the GPU drivers crashed under it:
http://ra.vendomar.ee/~ivo/memtestCL_1.00-crash.jpg

Btw: Running memtestCL does make my system quite unresponsive.
I'll check if I have the latest memetestCL.
Edit:
Binaries were different, so I'll rerun it.

Edit2:
Running now with 64 MB size and no crashing.
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Re: A special request for ATI 4xxx/5xxx owners (memory testing)

Postby #64-Lux » Mon Sep 27, 2010 5:57 pm

I have a 4870 with 512M of RAM.
What's the "correct" amount of memory to test with? Maximum I can start the program with is 270 (but the computer becomes sluggish).
Even the -f flag doesn't disable "press enter to quit" at the end. Is this correct? Kind of prohibits running in a loop..
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Re: A special request for ATI 4xxx/5xxx owners (memory testing)

Postby ihaque » Mon Sep 27, 2010 7:22 pm

Thanks to everyone running it and who cross-posted to their teams!

Ivoshiee wrote:I let it run for a while. How long, I do not know, but some time later the GPU drivers crashed under it:
Btw: Running memtestCL does make my system quite unresponsive.
I'll check if I have the latest memetestCL.
Edit:
Binaries were different, so I'll rerun it.


If it's still causing VPU recovers, it's possible that the kernels are timing out. RV730 is a fairly low-end GPU; reducing the size of the test region may help.


#64-Lux wrote:I have a 4870 with 512M of RAM.
What's the "correct" amount of memory to test with? Maximum I can start the program with is 270 (but the computer becomes sluggish).
Even the -f flag doesn't disable "press enter to quit" at the end. Is this correct? Kind of prohibits running in a loop..


There's no "correct" amount. As much as you can test is great, but if it's causing VPU recovers or making your computer unusable, having data on a smaller region is better than nothing.

If you redirect the output of the program to a file, then it should not prompt you at the end. Something like:

Code: Select all
memtestcl.exe -p 0 -g 0 -f -r [ramclock] -c [coreclock] 270 20 >> memtest.log
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Re: A special request for ATI 4xxx/5xxx owners (memory testing)

Postby #64-Lux » Mon Sep 27, 2010 8:00 pm

Thanks for the reply, it helped!

Edit: - may be of use. On Windows startup I run (launch a bat-file in a hidden window)
Code: Select all
nircmd exec hide loopmemtest.bat

The bat-file itself looks like this
Code: Select all
:run
memtestcl.exe -p 0 -g 0 -f -r 900 -c 800 128 20 >> memtest.log
goto run
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Re: A special request for ATI 4xxx/5xxx owners (memory testing)

Postby Ripshod » Mon Sep 27, 2010 11:18 pm

One ATI HD5770 running 200 iterations looped for a couple of days on 512MB. Also posted your request to motherboards.org.
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Re: A special request for ATI 4xxx/5xxx owners (memory testing)

Postby k1wi » Tue Sep 28, 2010 6:13 am

Do I remember during testing that we found that it only likes using 1/4 - 1/2 of your GPU's Ram.

*I just maxed it out @ 136MB on my 4770 (512MB). Got it looping now with 1% CPU utilisation.
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Re: Announcing release: standalone memory tester for ATI+NV GPUs

Postby hootis » Wed Sep 29, 2010 1:01 am

this weekend il run on all machines right now its only on the 5870
Things yet to materialize.
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Re: A special request for ATI 4xxx/5xxx owners (memory testing)

Postby arthuro » Wed Sep 29, 2010 3:40 pm

Running this on my HD 5850 now :)
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