Questions about using CUDALink, Mathematica's method to accelerate programs using NVidia graphics cards.

learn more… | top users | synonyms

6
votes
1answer
355 views

calling CUDA library functions

Mathematica has some predefined CUDA functions, like CUDAMap, CUDAFourier, etc. My question is how can one call functions which are part of CUDA library but not part of predefined Mathematica ...
5
votes
1answer
560 views

CUDALink is not initialized

I've upgraded to Mathematica 9.0 on Ubuntu 12.04 with the latest Nvidia driver (304.64). I load CUDA by using, as usual, Needs["CUDALink`"]. ...
3
votes
0answers
162 views

Beginner CUDA: two dimensional blocks and two dimensional threads?

This is a follow up question to: CUDA: setting grid dimensions. The purpose of the question is to understand how Mathematica is interfacing with CUDA's architecture. I have a related question/request ...
24
votes
3answers
2k views

How to find the center of a circular pattern?

I am writing an algorithm that finds the center of 500 x 500 pixels images coming from a live feed from a camera at 50 Hz. So it has to be quick! The images are images of an optical field which looks ...
13
votes
1answer
329 views

How to use SparseArray in CUDA?

Sparse arrays are widely used in many scientific applications where memory and time are strictly limited. For a considerable speedup one can use CUDA. Since Mathematica 8 we can conveniently use CUDA ...
10
votes
1answer
413 views

How to make a volume CUDA rendering isometric?

I just realized that the output of CUDAVolumetricRender[] uses (quite marked) perspective, which I do not want (for scientific data representation, it can be very ...
4
votes
0answers
81 views

A simple experiment to understand CUDAFunctionLoad

In an attempt to answer my own question (Beginner CUDA: two dimensional blocks and two dimensional threads?). Please excuse the long post, it contains for examples I constructed as an experiment to ...
2
votes
0answers
59 views

Looking for a working mathematica CUDA port of NVIDIA's nbody.cu

I am trying to extend an example that is provided as one of NVIDIA's prototypical examples: http://docs.nvidia.com/cuda/cuda-samples/index.html#cuda-n-body-simulation I'm trying, but haven't been ...
14
votes
1answer
904 views

Why does CUDAQ (from CUDALink) download data from Wolfram servers?

I understand why functions like ElementData or CountryData need to download up-to-date data when first launched. However, when ...
10
votes
2answers
2k views

CUDA and GPU hardware and compatibility questions?

We have iMac desktops and have just begun to parallelize computations across them see: Wolfram Light Weight Grid and parallel computing. This still does not look like it will give us the performance ...
9
votes
1answer
744 views

CUDALink not working on Mac OS X

On my MacBook Pro, I have a CUDA enabled video card, yet Mathematica does not seem to recognize this. For example, following the CUDALink Setup, I get ...
5
votes
2answers
978 views

Mathematica cannot find CUDA driver

I have successfully installed CUDA 5.0 on my Ubuntu 12.10, with driver 304.54, toolkit and samples. Running deviceQuery gives me a successful output: ...
5
votes
2answers
446 views

CUDA: setting grid dimensions

I'm new to CUDA, and CUDALink. I see how CUDAFunctionLoad allows one to set the block dimensions. On calling the function, you can also either pass as argument or have MMA automatically select the ...
3
votes
1answer
267 views

How to troubleshoot CUDALink?

This is a follow-up question from linking the libraries for CUDALlink in Ubuntu 12.10. The tests that I execute (CUDAQ[], ...
7
votes
1answer
704 views

CUDALink not working on Linux-64 and Asus GTX460

On my hardware I have a CUDA enabled video card an ASUS GTX460, yet Mathematica does not seem to recognize this. I have: CUDA Toolkit 4.1 CUDA SDK 4.0 NVIDIA Driver 295.49 on Sabayon Linux 64 ...