Questions and Answers :
GPU applications :
How many GPUs can I safely use on my GTX750Ti?
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Graeme J Send message Joined: 12 Apr 01 Posts: 15 Credit: 50,821,397 RAC: 6 |
I have been using this card for a while now and have been using 3 GPUs per the Lunatics config code. I was just curious to know how many cores you can use? I have a medium sized i5 processor on which I generally run 4 cores. |
rob smith Send message Joined: 7 Mar 03 Posts: 22160 Credit: 416,307,556 RAC: 380 |
A GTX750ti is a GPU. I assume you are actually asking "How many tasks can I run on my GTX750ti?" The answer is, it depends on the system it is installed in, but certainly no more than 3 Mulitbeam (ordinary SETI tasks) or one or two AstroPulse. Running mixed MB and AP at the same time on an Nvidia GPU often results in the MB running at about half normal speed. While you may be able to run more than these it has been demonstrated repeatedly that the time and error rate increase very rapidly above these figures. To get the maximum out of the GPU it has been found best to leave at least one CPU core "free", that is reduce the number of CPU cores being used directly for processing to three. Bob Smith Member of Seti PIPPS (Pluto is a Planet Protest Society) Somewhere in the (un)known Universe? |
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