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1) Message boards : Project Staging Area : prpclient genefercuda mixed experiences (Message 35175)
Posted 4138 days ago by RickProject donor



Oops. That's Win XP with SP3 32-bit not Win 95.

People must have wondered.

Rick


2) Message boards : Project Staging Area : prpclient genefercuda mixed experiences (Message 35148)
Posted 4139 days ago by RickProject donor


Now the part I can't explain. The test counts for GFN262144.

The prpclient.log file on the Win 95 32-bit GTX 460 machine says:
Time: 74:31:52 Tests: 6
(although it looks like the count is wrong because it appears to have done 10 tests)

The prpclient.log file on the Win 7 64-bit GTS 450 machine says:
Time: 91:52:03 Tests: 39

The GTX 460 is supposed to be more powerful than the GTS 450. The rest of the hardware is similar except that the 64-bit machine has 8GB RAM and the 32-bit machine has 4GB RAM.

Any ideas?

Thanks,

Rick

3) Message boards : Project Staging Area : prpclient genefercuda mixed experiences (Message 35029)
Posted 4142 days ago by RickProject donor
I figured I should post my prpclient genefercuda experience in case it is helpful to the authors or anyone else.

Running great on Win 95 32-bit on a GTX 460. Genefercuda uses a full CPU core for under a minute and then nicely fully loads the GPU and uses virtually no CPU time.

Running not as great on Win 7 64-bit on a GTS 450. Genefercuda uses a full CPU core for under a minute and then nicely fully loads the GPU but continues to use CPU time. The CPU time it uses cycles between a fully loaded core, partially loaded core, and then no load on the CPU. The second time prpclient was run it was immediately shut down and quaratined by Norton Internet Security 2010 SONAR. I jumped through some hoops to get it back and then it ran okay again.

In both cases I was using this version: prpclient-4.3.0beta-windows-gpu.7z and NVIDIA driver 266.58.

Rick
4) Message boards : Number crunching : multi-core memory interface saturation and cache (Message 28165)
Posted 4280 days ago by RickProject donor

Hello,

Has anyone seen how much memory bandwidth the PrimeGrid LLR programs use and if the work that they do fit into any of the processor caches?

I am curious if an AMD Phenom II X6 2.8Ghz would yield 50% more PrimeGrid throughput than an AMD Phenom II X4 2.8Ghz.

I don't know how many LLR threads it takes to saturate the memory interface at 1333 or 1600 speeds.

Thanks,

Rick
5) Message boards : Proth Prime Search : future PrimeGrid CUDA work? (Message 26368)
Posted 4348 days ago by RickProject donor



I did the Windows Update optional update and now device manager says NVIDIA 8.17.12.5896 7/9/2010.


6) Message boards : Proth Prime Search : future PrimeGrid CUDA work? (Message 26366)
Posted 4348 days ago by RickProject donor

My NVIDIA GTX 460 is sitting idle. According to device manager it has driver 8.17.12.5856 from 6/14/2010. I've tried the trick of using the PrimeGrid preferences to only accept GPU work and not CPU work and then hit update from within BOINC and it says:
Message from server: _("No work available for the applications you have selected. Please check your project preferences on the web site.")

How much more PPS Sieve CUDA is going to be available?

Are there any more PrimeGrid CUDA apps planned?

Thanks,

Rick
7) Message boards : Proth Prime Search : Proth Prime Search (Sieve) CUDA Computation Error (Message 26365)
Posted 4348 days ago by RickProject donor


When I'm running PPS CUDA, GPU-z shows 98% GPU load, 1% memory controller load, 0% video engine load, and 62MB memory used when the task is 75% done. It looks like the memory slowly counts up. When it starts a new one the memory use starts at 47MB.

I have DEP turned on for all programs, not the default setting. I doubt that applies to the GPU though.


8) Message boards : Proth Prime Search : Proth Prime Search (Sieve) CUDA Computation Error (Message 26317)
Posted 4349 days ago by RickProject donor


I looked in device manager and the NVIDIA driver was 8.16.11.9107 from 9/27/2009.

I let Windows Update do the recommended NVIDIA update and now device manager shows 8.17.12.5896 from 7/9/2010.

Then the PPS CUDA app did 11 successful WUs in a row!

Thanks.

9) Message boards : Proth Prime Search : Proth Prime Search (Sieve) CUDA Computation Error (Message 26302)
Posted 4350 days ago by RickProject donor


I tried the Proth Prime Search Sieve CUDA app on a ZOTAC ZT-20109-10P GeForce GTS 250 1GB GPU. The machine passes Prime 95 Torture test, Burn Test, Memtest86+, Furmark, and OCCT GPU test. It runs Win 7 64-bit. GPU runs at 73C with fan automatically at 50% when running PPS CUDA.

The PPS CUDA app 9 work units in a row gives "Computation Error" result always 19:01 to 19:09 elapsed time. Should I keep crunching anyway?

Rick


10) Message boards : Problems and Help : How to stress test gpu in Windows 7 64-bit (Message 26300)
Posted 4350 days ago by RickProject donor


Now I've tried Furmark and OCCT. They both work in Win 7 64-bit.

I tried OCCT first and had to update my DirectX to get it to run.

Rick



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