Posts by Stef

1) Message boards : Cruncher's Corner : A lot of invalid results (opencl-intel_gpu) (Message 134451)
Posted 42 minutes ago by Profile Stef
oops sorry.
I tried the previous version earlier, which was even worse.
I guess the version has to match the one the wingman is using.
2) Message boards : Cruncher's Corner : A lot of invalid results (opencl-intel_gpu) (Message 134449)
Posted 54 minutes ago by Profile Stef
As I said earlier, it's running the latest version.
3) Message boards : Cruncher's Corner : A lot of invalid results (opencl-intel_gpu) (Message 134438)
Posted 22 hours ago by Profile Stef
But there is one that took 4621s and validated. But it took way to long compared to the other host (using a HD4600 too)
4) Message boards : Cruncher's Corner : A lot of invalid results (opencl-intel_gpu) (Message 134432)
Posted 1 day ago by Profile Stef
It's their latest driver. It's changelog said "Experience up to 30% improvement in performance in certain OpenCL workloads"
So probably it changed somthing in the way calculations are done.

30.10.2014 09:22:41 | | OpenCL: Intel GPU 0: Intel(R) HD Graphics 4600 (driver version 10.18.10.3960, device version OpenCL 1.2, 1298MB, 1298MB available, 56 GFLOPS peak)
30.10.2014 09:22:41 | | OpenCL CPU: Intel(R) Core(TM) i5-4690K CPU @ 3.50GHz (OpenCL driver vendor: Intel(R) Corporation, driver version 4.2.0.99, device version OpenCL 1.2 (Build 99))
30.10.2014 09:22:41 | | Processor: 4 GenuineIntel Intel(R) Core(TM) i5-4690K CPU @ 3.50GHz [Family 6 Model 60 Stepping 3]
5) Message boards : Cruncher's Corner : A lot of invalid results (opencl-intel_gpu) (Message 134430)
Posted 1 day ago by Profile Stef
Hi,

I recently bought an i5-4690K which i'm running at stock settings.
So far I have many invalid results using the opencl application on the HD4600 (rough estimate: about 50%).
What could be wrong?

Two examples:
http://einstein.phys.uwm.edu/result.php?resultid=462349140
http://einstein.phys.uwm.edu/result.php?resultid=462795181

I've tested the RAM using memtest86 and the CPU using prime95 and haven't detected any errors. CPU tasks seem to run fine.
6) Message boards : Cruncher's Corner : GTX 670 crunching slower on 3770 K PCIe 3 slot than on i7 980 PCIe 2 slot (Message 124126)
Posted 560 days ago by Profile Stef
You can try to run http://www.techpowerup.com/gpuz/ to check if it's running in x16 3.0 mode.
7) Message boards : Cruncher's Corner : Low gpu load (Message 122837)
Posted 629 days ago by Profile Stef
Also make sure, that the card is running in the fastest possible PCIe-Mode (3.0 if possible)
8) Message boards : Problems and Bug Reports : I cannot find (Message 122013)
Posted 657 days ago by Profile Stef
I cannot find myself listed as being a ranked competitor on the Challenge, why?
Thank you for your help


Which list are you referring to?
9) Message boards : Cruncher's Corner : Do the e@h CPU-Apps benefit from hyperthreading? (Message 121553)
Posted 676 days ago by Profile Stef
I have now some results from S6LV:

Without HT:
2 Results in avg. 87875s

With HT enabled:
4 Results in avg. 111155s

It's a pretty amazing gain.
10) Message boards : News : Can Einstein@Home pass the 1 Petaflop (1000 Teraflop) barrier? (Message 121543)
Posted 677 days ago by Profile Stef
I don't think we'll reach it before the end of 2012. the FLOPS have been decreasing since days now. I guess most if not all SETI people have gone to their home and that's why we're seeing such decrease.

Yep.. it doesn't look like:


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This material is based upon work supported by the National Science Foundation (NSF) under Grants PHY-1104902, PHY-1104617 and PHY-1105572 and by the Max Planck Gesellschaft (MPG). Any opinions, findings, and conclusions or recommendations expressed in this material are those of the investigators and do not necessarily reflect the views of the NSF or the MPG.

Copyright © 2014 Bruce Allen