| From: | Vitor Reus <vitor(dot)reus(at)gmail(dot)com> |
|---|---|
| To: | Nulik Nol <nuliknol(at)gmail(dot)com> |
| Cc: | pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: CUDA Sorting |
| Date: | 2011-09-19 17:11:18 |
| Message-ID: | CALf5ONrXXV+d8X0OBu-riiZ8RHBDwj0QH3kFPPcYsvZv53t3LA@mail.gmail.com |
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| Lists: | pgsql-hackers |
2011/9/19 Nulik Nol <nuliknol(at)gmail(dot)com>:
> On Mon, Sep 19, 2011 at 7:11 AM, Vitor Reus <vitor(dot)reus(at)gmail(dot)com> wrote:
> I recommend doing some bandwidth benchmark test before you start coding.
I already did some benchmarks with GPU sorting (not in pgsql), and
measured total sort times, copy bandwidth and energy usage, and got
some exciting results:
I got around 1GB/s bandwidth with a GeForce GT 430 on a MS-9803 MB.
The power increase ratio was 2.75 times, In a Core 2 Duo T8300, adding
the GT 430: http://tinyurl.com/6h7cgv2
The sorting time performance increases when you have more data, but in
average is 7.8 times faster than CPU: http://tinyurl.com/6c95dc2
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