On: Drop-in GPU Acceleration of GNU Octave

[foxhill]

it could very easily run double precision, but then they'd have to use their tesla cards to run it, and at several thousand dollars a piece, wont be quite as attractive to the user..

[wtallis → foxhill]

Consumer GPUs can do double-precision. At the high end, consumer parts usually (though not always) get crippled performance relative to their pro counterparts, but for the low and mid-range chips even the workstation cards have lackluster double-precision performance.

[foxhill → wtallis]

well, yes, technically correct, but a CPU has much better double precision performance than that.

1/24th (or 1/32th in maxwell) of single precision performance doesn't really sell the usefulness of CUDA.

[gh02t → foxhill]

Uh most recent Nvidia GPUs support double precision, albeit at a speed penalty.

And they are using a Tesla card in the article. It says they are using a K10.

[foxhill → gh02t]

of course they all can do double, but at 1/24th of the speed of single. (1/32th in maxwell)

they use a GK104 based tesla, i.e a "dual GPU" GTX680, so it has no real double precision. unless you consider 2x 95GFlops noteworthy.