Graphics card performances
1 Dec 2015 21:05:04 UTC
Topic 198330
(moderation:
I believe that E@H GPU workunits make heavy use of the GPU's double precision. Is this correct?
It looks like I may have a chance to replace one of my computers, using a GTX 560, with a newer computer using a GTX 980, although not very soon. Where can I find information comparing the double precision capability of these two graphics boards?
Graphics card performances
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Probably better to ask in Cruncher's Corner than in the Cafe.
David
Miserable old git
Patiently waiting for the asteroid with my name on it.
You might want to read this
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You might want to read this thread
http://einsteinathome.org/node/197801&postid=134933
Einstein is single precision so double precision isn't as important.
The 560 is a double precision, the 980 is a single precision.
RE: You might want to read
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I'll need to repeat the question at some other BOINC project, then. At least one of the BOINC projects my computers participate in makes heavy use of double precision, and I don't want to decrease my ability to participate in that one or those.
RE: I'll need to repeat the
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The most widely cited "double precision required" project is MilkyWay@Home - where I see you've already posted.
Try this one .... Titan
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Try this one ....
Titan
Waiting for Godot & salvation :-)
Why do doctors have to practice?
You'd think they'd have got it right by now
RE: RE: You might want to
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I posted this link at MilkyWay:
https://en.wikipedia.org/wiki/List_of_Nvidia_graphics_processing_units#Compute_capability_table
It's a place to start at least.
RE: Try this one
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If I had access to more power for the planned location of those computers, I might. I don't.
RE: RE: RE: You might
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It helped enough. It shows that the GTX 980 can do double precision, and more than the GTX 560 can, but not as much more as some people would expect from the ratio of their single precision performances.
Hello Crunchers, I have
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Hello Crunchers,
I have spent a lot of time researching, rebuilding and testing my system over the last few months.
Since I am now running 3x TITAN V cards, I am not sure whether the CPU performance or core count of the i7-8700k with 6C/12T @ 5.00GHz is sufficient (mainboard with Z390 chipset). 2 WUs are executed per GPU. No CPU-only applications, no other programs or background services.
What do you think? Should a CPU with more cores be used?
Best regards
Marcelo wrote: Hello
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Hi Marcelo,
If you are running only Einstein GPU tasks at two WU's per GPU, you should be fine providing you do have your BIOS set to use threads instead of just cores.
Einstein doesn't use more than a single thread for each task, and at 3 GPUs w/each running 2 tasks (WU) apiece you'll be using 6 threads, not 6 cores.
HTH
Proud member of the Old Farts Association