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POInclude path problems for GPU library
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copied!<p>I am trying to use MAGMA (http://icl.cs.utk.edu/magma/) to perform some matrix operations on a GPU. I am able to invoke CUDA kernel's successfully, and there is no problem with that. But when I try to use the magmablas_sgemm function, I am getting errors. </p> <p>This is the compilation command I am using:</p> <pre> nvcc -o msd msd.cu -I../../include -I/util/magma/1.1 -lmagma -lmagmablas -Xcompiler -I../../include -I/util/magma/1.1 "-O3" </pre> <p>This is a partial printenv output:</p> <pre> LD_LIBRARY_PATH=/util/magma/1.1/lib:/util/cuda/4.1.28/cuda/lib64:/util/cuda/4.1.28/cuda/lib MAGMA=/util/magma/1.1 PATH=/util/magma/1.1:/util/cuda/4.1.28/cuda/bin:/usr/lib64/qt-3.3/bin:/util/Modules/3.2.8/bin:/usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/usr/kerberos/bin _LMFILES_=/util/Modules/modulefiles/null:/util/Modules/modulefiles/modules:/util/Modules/modulefiles/cuda/4.1.28:/util/Modules/modulefiles/magma/1.1 MODULEPATH=/util/Modules/versions:/util/Modules/modulefiles LOADEDMODULES=null:modules:cuda/4.1.28:magma/1.1 </pre> <p>As can be clearly seen, the magma libraries are included in LD_LIBRARY_PATH and yet, I get this error:</p> <pre> /usr/bin/ld: cannot find -lmagma collect2: ld returned 1 exit status make: *** [msd] Error 1 </pre> <p>Any help/pointers will be greatly appreciated! Thanks!</p> <p>P.S: If relevant, the underlying C compiler being used by nvcc for host code is gcc.<br> P.P.S: I checked the path "/util/magma/1.1/lib" and it does contain libmagma.a and libmagmablas.a </p> <p>UPDATE: Wow.. I hate this.. but this got it working</p> <p>nvcc -o msd msd.cu -I../../include -I/util/magma/1.1 -L/util/cuda/4.0.17/cuda/lib64 -L/util/magma/1.1/lib -lcublas -lm -lmagma -lmagmablas -Xcompiler -I../../include -I/util/magma/1.1 "-O3"</p> <p>So all I did was include the library path explicitly. But I thought LD_LIBRARY_PATH will take care of stuff like that. Any idea why that did not work?</p>

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