Why is SETI@home only using a fraction of the disk space I have offered it?


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Profile Stuart
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Message 1184404 - Posted: 10 Jan 2012, 23:17:45 UTC

I have set in my "computing preferences" for it to use up to 100GB of disk space, yet it's only using 5.5MB

Any idea why?

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Message 1184465 - Posted: 11 Jan 2012, 5:32:58 UTC - in response to Message 1184404.
Last modified: 11 Jan 2012, 5:35:14 UTC

As things presently stand, the most work you can have is 50 WU's X (# of CPU cores) as you have no GPU's. 200 Multibeam WU's would take up about 73MB of space. The Seti and Boinc software would add some additional overhead, but obviously nothing near 1 GB. My quad core hyperthreaded with 2 Fermi GPU's is using slightly more than 1/2 GB for everything (roughly 1200 WU's). If you set your preferences to accept astropulse WU's, those are 8MB apiece, but even 200 of those would only be 1.6GB.
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Message 1184479 - Posted: 11 Jan 2012, 7:23:48 UTC - in response to Message 1184465.

ok, thanks. Not sure what a GPU is, but I think it's a kind of graphics card, right? I thought I had one of those :-/

I do seem to be able to accept Astropulse WUs though as it's working on one right now.

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Message 1184483 - Posted: 11 Jan 2012, 7:34:40 UTC - in response to Message 1184479.

ok, thanks. Not sure what a GPU is, but I think it's a kind of graphics card, right? I thought I had one of those :-/

I do seem to be able to accept Astropulse WUs though as it's working on one right now.


GPU= Graphical Processing Unit. Yeah, basically a video card, but capable of using CUDA applications to process data. Great way to dramatically increase throughput of WU's, and hence, credits. You may very well have a "video card", but apparently, it isn't CUDA compatible, as BOINC doesn't see one on either of your systems.
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Message 1184522 - Posted: 11 Jan 2012, 13:21:29 UTC - in response to Message 1184483.

GPU= Graphical Processing Unit. Yeah, basically a video card, but capable of using CUDA applications to process data.

There are different species of these GPUs around, that do different calculations:

CUDA is only done by Nvidia GPUs.
CAL is only done by ATI GPUs.
OpenCL is done by both ATI and Nvidia GPUs.

Most normally why the GPU is not being detected is because the user never installed a specific driver from the videocard manufacturer, but instead let Windows install the driver. Microsoft has this policy where it refuses to install parts of drivers that are direct competitors to things they themselves do.

In this case, they do not install OpenGL drivers as it competes with their DirectX. They also refuse to install parts of the OpenCL/CUDA drivers, as these compete directly with their DirectCompute API.
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Message 1184647 - Posted: 11 Jan 2012, 21:20:23 UTC - in response to Message 1184522.

umm... bit too much technical stuff for me..

So I may actually have a GPU and not know it because the driver isn't installed?

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Message 1184686 - Posted: 12 Jan 2012, 0:17:08 UTC - in response to Message 1184647.

umm... bit too much technical stuff for me..

So I may actually have a GPU and not know it because the driver isn't installed?


First things first:

If you want to know, do the following:

Click on the "start" icon on your desktop
In the "search" box, enter "device"
Scroll down to "Device Manager" and click enter
Scroll down to "display adapters" and click enter

If you have a video card, it should show something like "NVIDIA GeForce" or "ATI Radeon" followed by a model #.

Report back what you find.
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Message 1184745 - Posted: 12 Jan 2012, 13:23:31 UTC - in response to Message 1184686.

ok, on my laptop it says:

Mobile Intel(R) 45 Express Chipset Family (Microsoft Corporation WDDM 1.1)

Haven't got access to my other PC at the moment.

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Message 1184788 - Posted: 12 Jan 2012, 18:41:45 UTC - in response to Message 1184745.

and the other machine 6339132 has this:

ATI Radeon HD 3870 X2 (Microsoft Corporation WDDM 1.1)
ATI Radeon HD 3870 X2 (Microsoft Corporation WDDM 1.1)

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Message 1184791 - Posted: 12 Jan 2012, 19:00:26 UTC

The laptop graphics are integrated into the motherboard. No practical way to run GPU apps on it.

The desktop cards COULD run an openGL version of the GPU app, but it's a third party app, would have to be downloaded and installed by you (not automatically by S@H), and since your cards are older (looks like they came out in 2007), performance wouldn't be terribly efficient.

My personal opinion is you're better off staying with CPU only processing unless or until you buy or build a new system. Others might have a different opinion.
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Message 1184823 - Posted: 12 Jan 2012, 21:20:19 UTC - in response to Message 1184791.

IIRC the old app would only work for the Astropulse Wu's which again would be very slow
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Message 1184906 - Posted: 13 Jan 2012, 6:49:15 UTC - in response to Message 1184823.

IIRC?

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Message 1184914 - Posted: 13 Jan 2012, 8:55:38 UTC - in response to Message 1184906.

If I Recall Correctly.

Use http://www.urbandictionary.com/ for all those pesky abbreviations and acronyms. :-)
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Message 1184942 - Posted: 13 Jan 2012, 12:28:45 UTC - in response to Message 1184914.

he he...

I need to improve me geekspeak clearly

:)

Questions and Answers : Preferences : Why is SETI@home only using a fraction of the disk space I have offered it?

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