GeForce GTX 980 Ti (4095MB) - 2GB missing

Message boards : Number crunching : GeForce GTX 980 Ti (4095MB) - 2GB missing
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Profile Georg Kaefer
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Message 1717232 - Posted: 23 Aug 2015, 7:36:33 UTC
Last modified: 23 Aug 2015, 7:40:30 UTC

I recently installed a EVGA GeForce GTX 980 Ti with 6GB GDDR Memory.
my boinc account lists the computer with

"GeForce GTX 980 Ti (4095MB)"

so 2 GB missing here... GPU-Z and other tools do show the correct 6 GB.

is this caused by any setting or is this "just" false recognized by boinc?

Georg

PS: affected Computer ID: 7576098
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Richard Haselgrove Project Donor
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Message 1717235 - Posted: 23 Aug 2015, 8:12:39 UTC - in response to Message 1717232.  

It's a 32-bit vs. 64-bit addressing issue. I don't know of any BOINC project that issues tasks which, individually, require more than 4 GB of memory. If you don't need to use more RAM than 32 bits can address, it's actually more efficient to use 32-bit addressing - GPU data transfers are, by comparison with everything else, rather slow. So everyone's kept to the lower standard.
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Profile Georg Kaefer
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Message 1717237 - Posted: 23 Aug 2015, 8:22:25 UTC
Last modified: 23 Aug 2015, 8:22:50 UTC

thansk for reply!
just seconds ago I found it myself on forum here:
http://setiathome.ssl.berkeley.edu/forum_thread.php?id=77940&postid=1711942

so ... can be "ignored" so far.
Georg
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Profile Zombu2
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Message 1717365 - Posted: 23 Aug 2015, 15:52:31 UTC

yup
I came down with a bad case of i don't give a crap
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Message boards : Number crunching : GeForce GTX 980 Ti (4095MB) - 2GB missing


 
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