Re: CUDA Sorting

On 19 September 2011 15:54, Greg Stark <stark(at)mit(dot)edu> wrote:
> On Mon, Sep 19, 2011 at 3:36 PM, Greg Smith <greg(at)2ndquadrant(dot)com> wrote:
>> The main problem here is that the sort of hardware commonly used for
>> production database servers doesn't have any serious enough GPU to support
>> CUDA/OpenCL available
>
> Of course that could change if adding a GPU would help Postgres... I
> would expect it to help mostly for data warehouse batch query type
> systems, especially ones with very large i/o subsystems that can
> saturate the memory bus with sequential i/o. "Run your large batch
> queries twice as fast by adding a $400 part to your $40,000 server"
> might be a pretty compelling sales pitch :)
>
> That said, to help in the case I described you would have to implement
> the tapesort algorithm on the GPU as well. I expect someone has
> implemented heaps for CUDA/OpenCL already though.

I seem to recall a paper on such a thing by Carnegie Mellon
University. Can't remember where I saw it though.

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