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From: glen herrmannsfeldt on 19 Jun 2010 01:03
steveu <steveu(a)n_o_s_p_a_m.coppice.org> wrote:
(snip)

> The latest devices from ATI and nVidia do double precision, and the Fermi
> devices from nVidia are seriously trying to attack high performance
> computing (though nVidia seem to be badly screwing up on their execution
> right now).

It seems, though, that if one really wanted to design a
co-processor for high-performance scientific computing one
should actually design a co-processor for high-perfomance
computing. It is nice that one designed for gaming, and
cheap due to the economy of scale, can be used.

Now, I could be wrong and someone has found a need for double
precision in gaming, but it would surprise me.

There are people working on FPGA based processors with a
hypertransport interface, which seems to make more sense
than using a graphics processor interface.

-- glen
From: HardySpicer on 17 Jun 2010 21:25
I heard somewhere that PC GPUs can be used to do say FFTs. They are
cheap and very powerful (though not that easy to prorgam). You can get
up to 1000 processors on a GPU so it could have all manner of
applications. However, the I/O would slow things down I expect unless
the CPU and GPU were on the same chip (lets say). Has anybody linked
GPUs with FPGA I/O?


Hardy
From: Vladimir Vassilevsky on 18 Jun 2010 00:02


HardySpicer wrote:

> I heard somewhere that PC GPUs can be used to do say FFTs. They are
> cheap and very powerful (though not that easy to prorgam). You can get
> up to 1000 processors on a GPU so it could have all manner of
> applications. However, the I/O would slow things down I expect unless
> the CPU and GPU were on the same chip (lets say). Has anybody linked
> GPUs with FPGA I/O?

Hardy, can you do anything other then babbling nonsense? If you can,
download a library for ATI or NVIDIA, compile it and see for youself.

From: HardySpicer on 18 Jun 2010 03:19
On Jun 18, 4:02 pm, Vladimir Vassilevsky <nos...(a)nowhere.com> wrote:
> HardySpicer wrote:
> > I heard somewhere that PC GPUs can be used to do say FFTs. They are
> > cheap and very powerful (though not that easy to prorgam). You can get
> > up to 1000 processors on a GPU so it could have all manner of
> > applications. However, the I/O would slow things down I expect unless
> > the CPU and GPU were on the same chip (lets say). Has anybody linked
> > GPUs with FPGA I/O?
>
> Hardy, can you do anything other then babbling nonsense? If you can,
> download a library for ATI or NVIDIA, compile it and see for youself.

That wasn't the question. Clearly English is not your first language
so I understand your confusion.
My question was, has anybody interfaced their own FPGA board with a
GPU so that I/O can be speeded up.
Don't bother answering Vlad if you just want to flame.

Hardy
From: glen herrmannsfeldt on 18 Jun 2010 03:25
HardySpicer <gyansorova(a)gmail.com> wrote:

(snip)

> That wasn't the question. Clearly English is not your
> first language so I understand your confusion.
> My question was, has anybody interfaced their own FPGA
> board with a GPU so that I/O can be speeded up.
(snip)

I suppose you could do that, but would it help?

As FPGAs aren't so good for floating point, it might be that
GPU attached to an FPGA (possibly as a coprocessor for a more
common system) would be useful. Otherwise, you can do a lot
of processing inside an FPGA.

-- glen
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