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Thread Subject: Compiling CUDA C/C++ mex code under linux

Subject: Compiling CUDA C/C++ mex code under linux

From: Oliver Woodford

Date: 29 Sep, 2009 08:53:01

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Hi all

There a several methods available on the file exchange for compiling CUDA C/C++ code into mex files under Windows, but none that I've come across work for linux. However, I've found a nice, easy way to do it, which I'll share with you, though I must confess I haven't tested it extensively.

The idea is to use Nvidia's nvcc compiler to convert CUDA C/C++ code into standard C++ code, then use mex after that. The first stage looks something like:

system(sprintf('nvcc -I"%s/extern/include" --cuda "mexfun.cu" --output-file "mexfun.cpp"', matlabroot));

Then the second stage is roughly:

mex -I/opt/cuda/include -L/opt/cuda/lib -lcudart mexfun.cpp

Obviously you need to set the various paths and file/function names to suit your needs.

HTH,
Oliver

PS Does anyone think this approach could reduce the efficiency of the resulting machine code? I do wonder if it doesn't limit the level of optimization that can be applied.

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Tag Activity for This Thread
Tag	Applied By	Date/Time
mex	Oliver Woodford	29 Sep, 2009 04:54:02
compile	Oliver Woodford	29 Sep, 2009 04:54:02
linux	Oliver Woodford	29 Sep, 2009 04:54:02
cuda	Oliver Woodford	29 Sep, 2009 04:54:02
c	Oliver Woodford	29 Sep, 2009 04:54:02
nvcc	Oliver Woodford	29 Sep, 2009 04:54:02

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