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How to convert a C++ program that uses CUDA into MEX

Answer 1

+1 A:

If you are converting from CUDA to MATLAB, then why are you still calling the CUDA functions?

unresolved external symbol _imp_cutCheckCmdLineFlag@12

John Dibling 2010-06-15 19:07:10

I'm not quite sure what you mean here. The file I'm trying to convert is a .cpp file that calls external CUDA functions to perform operations on an image. I want to retain that functionality in the MEX file so I'm calling those functions. I'm pretty inexperienced with both, though, so if this is a giant mistake, let me know.

Harold Wellington Graves 2010-06-15 19:39:02

@Harold Wellington Graves: CUDA is a runtime system. If you're not running CUDA code, then how can you call the CUDA functions? This would be like trying to write C++ code in a VB project.

John Dibling 2010-06-15 19:43:57

I think I see what you're saying. And knowing that gives me a few ideas on how to resolve the problems I've been having. Thanks for the help! I'm going to leave this open a bit longer just to see if anyone else has comments.

Harold Wellington Graves 2010-06-15 20:02:26

@Harold Wellington Graves: Good luck!

John Dibling 2010-06-15 20:10:36

Answer 2

A:

You need to link the CUDA libraries to your MEX file. It looks like you're also using some of the "cutil.h" stuff from the CUDA SDK (such as cutCheckCmdLineFlag), so you'll need to link against not only the cudart library, but also cutil. I.e. you probably need to add something like

-Lc:\CUDA\lib -lcudart -lcuda -L<path-to-cutil.lib> -lcutil

to your MEX command-line.

Edric 2010-06-16 07:04:47

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How to convert a C++ program that uses CUDA into MEX

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