CUDA 2.0 beta

this is matlab 2008a Szeta test on desktop and laptop

Hi,

For those who are interested:

First machine:

Desktop Quad Core with 8800 GTX

windows performance factor 5.5 Vista-64 sp 1

4G RAM

which Szeta

C:\Program Files\MATLAB\R2008a\toolbox\Matlab_CUDA_1.1\Szeta.mtic; FS_2Dturb(128,1,1,1); toc;

CFL =

0.1017

Gsqav =

1.1995

Elapsed time is 3.448124 seconds.

tic; FS_vortex; toc;

ans =

512

Elapsed time is 69.536027 seconds.

which Szeta

C:\Program Files\MATLAB\R2008a\toolbox\Matlab_CUDA_1.1\Szeta.mexw64

tic; FS_2Dturb(128,1,1,1); toc;

CFL =

0.1017

Gsqav =

```
1.1995
```

Elapsed time is 3.706450 seconds.

tic; FS_vortex; toc;

ans =

512

Elapsed time is 19.165827 seconds.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

Second machine:

HP Pavilion dv9000, 4G RAM

Windows performance factor 4.8 card 8600M GS

(pain to install nvcuda.dll !!!)

which Szeta

C:\Program Files\MATLAB\R2008a\toolbox\CUDA\Szeta\Szeta.mtic; FS_2Dturb(128,1,1,1); toc;

CFL =

```
0.1017
```

Gsqav =

```
1.1995
```

Elapsed time is 4.012627 seconds.

tic; FS_vortex; toc;

ans =

512

Elapsed time is 75.294268 seconds.

which Szeta

C:\Program Files\MATLAB\R2008a\toolbox\CUDA\Szeta\Szeta.mexw64tic; FS_2Dturb(128,1,1,1); toc;

CFL =

```
0.1017
```

Gsqav =

```
1.1995
```

Elapsed time is 10.062418 seconds.

tic; FS_vortex; toc;

ans =

512

Elapsed time is 49.365398 seconds.

FACTS:

given the dual precision on native matlab - not a great performance gain using GPU, which runs with single precision I must say…

probably Szeta is not the best example

Regards,

revera