Compiling And Running Cuda Programs
Basic of CUDA Programming: Part 0Kernels can be written using the CUDA instruction set architecture, called PTX (Parallel thread Execution ). It is however usually more effective to use a high-level programming language such as C. In both cases, kernels must be compiled into binary code by nvccto execute on the device.ProcessCommand Line ProcedureStep 1: Save your program with the extension.cu let say Example.cuStep 2: Open command prompt (in Windows) or Terminal (in Linux) and locate your program directory.Step 3: Type in command prompt (Terminal in Linux)C:UsersGnits nvcc Example.cu // for compilingC:UsersGnits a.exe // To run your program Procedure is same in Linux Feel free to commentReferences.
I am looking for help getting started with a project involving CUDA. My goal is to have a project that I can compile in the native g compiler but uses CUDA code. I understand that I have to compile my CUDA code in nvcc compiler, but from my understanding I can somehow compile the CUDA code into a cubin file or a ptx file.Here are my questions:. How do I use nvcc to compile into a cubin file or a ptx file? Don't I need a -c or something?. Which file type do I want to use?.
What are the g commands to correctly compile and link the project together?Assume the following:. I have a file called 'main.cpp' that has a main function in it and includes cuda.h. I have another file called 'cudaFunc.cu' that has CUDA code in it. Let's say, for instance, that I want to add two integer arrays that exist in main.cpp. I was able to resolve my issue with a couple of different posts including these ones. Don't forget that if you are using a 64 bit machine to link to the 64 bit library! It seams kind of obvious, but for clowns like me, that is something I forgot.
Compiling And Running Cuda Programs Download
Here is the make file that I now use. If you can digest this make file, you should be able to do what I was trying to do which was separate compilation of cuda code and other G code. Also keep in mind that you have to have the gcc, g compilers at certain versions (I am using g-4.4 and it is working for me) Anyway, here is the make file. All: programprogram: cudacode.og -o program -L/usr/local/cuda/lib64 -lcuda -lcudart main.cpp cudacode.ocudacode.o:nvcc -c -arch=sm20 cudacode.cuclean: rm -f.o programHopefully you can see that the first thing I do is compile the cudacode (that has been saved as a.cu) using the nvcc compiler and -c option (also note that you may want to remove the -arch=sm20). This created a cudacode.o. I then use the g compiler with the -o option and link to the lib64 library and link the -lcuda and -lcudart libraries along with compiling my main.cpp and then linking the cudacode.o.
Hope this helps someone! My answer likely describes what you need.A couple of additional notes:. You don't need to compile your.cu to a.cubin or.ptx file. You need to compile it to a.o object file and then link it with the.o object files from your.cpp files compiled with g.
In addition to putting your cuda kernel code in cudaFunc.cu, you also need to put a C or C wrapper function in that file that launches the kernel (unless you are using the CUDA driver API, which is unlikely and not recommended). Also add a header file with the prototype of this wrapper function so that you can include it in your C code which needs to call the CUDA code. Then you link the files together using your standard g link line.