Posts by Stef

1) 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 34 days ago by

Stef

You can try to run http://www.techpowerup.com/gpuz/ to check if it's running in x16 3.0 mode.

2) Message boards : Cruncher's Corner : Low gpu load (Message 122837)
Posted 103 days ago by

Stef

Also make sure, that the card is running in the fastest possible PCIe-Mode (3.0 if possible)

3) Message boards : Problems and Bug Reports : I cannot find (Message 122013)
Posted 131 days ago by

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?

4) Message boards : Cruncher's Corner : Do the e@h CPU-Apps benefit from hyperthreading? (Message 121553)
Posted 150 days ago by

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.

5) Message boards : News : Can Einstein@Home pass the 1 Petaflop (1000 Teraflop) barrier? (Message 121543)
Posted 151 days ago by

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:

6) Message boards : Wish List : Main page items (Message 121542)
Posted 151 days ago by

Stef

A link to a page with an overview of current and past e@h-Apps, where is explained where the data came from (LIGO, Arecibo, Fermi-LAT) and their purposes, would be nice.
It could contain also an list of all results of the past searches with links to the papers.
I think it would be a good guidance for new users.

This could replace the IMO a little unstructured paragraph "Science information and progress reports".

7) Message boards : Cruncher's Corner : Do the e@h CPU-Apps benefit from hyperthreading? (Message 121536)
Posted 152 days ago by

Stef

I think the FRGP2 have a consistent runtime by now. With HT enabled on the Atom D2700 it's 50% faster! The CPU runs a bit warmer (64°C vs. 60°C before, passive cooled). But it's a pretty nice performance for a <20W computer.
It does 4 FRGP2 Tasks in less than 22000s.
I've got one S6LV-Task in the pipeline, i'll see how it performs.

8) Message boards : Cruncher's Corner : Do the e@h CPU-Apps benefit from hyperthreading? (Message 121508)
Posted 153 days ago by

Stef

I have an Atom D2700 running without hyperthreading. Would it benefit when I enable HT?
The box is a bit hidden, running without screen, so it's a bit difficult do enter BIOS, otherwise I would have tested :)

And I'm planning to buy a new host. Would e@h benefit from i7's hyperthreading?
It's a choice between i7-3770 and i5-3570.

9) Message boards : Cruncher's Corner : No more S6 LineVeto WUs? (Message 121469)
Posted 156 days ago by

Stef

IS this normal ?

If you've deselected CPU-BRP4, then yes. There aren't many S6LV-Tasks around, as stated above.

10) Message boards : Cruncher's Corner : 10% of active hosts (last 2 weeks) w/ GPU seems to provide 50% of all work (Message 121447)
Posted 156 days ago by

Stef

Also GPUs only benefit the pulsar search (BRP4); they aren't used in the gravity wave work (SL6V1) where it's only CPU power that counts.

Which let me wonder why I get often no new work unit (within last 1-2 weeks) for that project (I deselected the BRP4 project fwiw)

Have a look at http://einstein.phys.uwm.edu/forum_thread.php?id=9835

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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 © 2013 Bruce Allen