编译GPU版本出错：CMakeFiles/thundersvm.dir/kernel/smo_kernel.cpp.o:smo_kernel.cpp:(.text+0x20af): first defined here

[zccyman]

Building CXX object src/thundersvm/CMakeFiles/thundersvm.dir/syncmem.cpp.o
/usr/bin/cmake: /root/anaconda2/lib/libcurl.so.4: no version information available (required by /usr/bin/cmake)
[ 23%] /usr/bin/cmake: /root/anaconda2/lib/libcurl.so.4: no version information available (required by /usr/bin/cmake)
Building CXX object src/thundersvm/CMakeFiles/thundersvm.dir/svm_matlab_interface.cpp.o
/usr/bin/cmake: /root/anaconda2/lib/libcurl.so.4: no version information available (required by /usr/bin/cmake)
[ 24%] /usr/bin/cmake: /root/anaconda2/lib/libcurl.so.4: no version information available (required by /usr/bin/cmake)
Building CXX object src/thundersvm/CMakeFiles/thundersvm.dir/svm_python_interface.cpp.o
/usr/bin/cmake: /root/anaconda2/lib/libcurl.so.4: no version information available (required by /usr/bin/cmake)
Linking CXX shared library ../../lib/libthundersvm.so
/usr/bin/cmake: /root/anaconda2/lib/libcurl.so.4: no version information available (required by /usr/bin/cmake)
CMakeFiles/thundersvm.dir/kernel/thundersvm_generated_kernelmatrix_kernel.cu.o: In function void std::_Destroy<std::string>(std::string*)': /workspace/thundersvm/src/thundersvm/kernel/kernelmatrix_kernel.cu:92: multiple definition of svm_kernel::sum_kernel_values(SyncData const&, int, SyncData const&, SyncData const&, SyncData const&, SyncData const&, SyncData&, int, int)'
CMakeFiles/thundersvm.dir/kernel/kernelmatrix_kernel.cpp.o:kernelmatrix_kernel.cpp:(.text+0x275): first defined here
CMakeFiles/thundersvm.dir/kernel/thundersvm_generated_kernelmatrix_kernel.cu.o: In function svm_kernel::get_working_set_ins(SyncData<float> const&, SyncData<int> const&, SyncData<int> const&, SyncData<int> const&, SyncData<float>&, int)': /workspace/thundersvm/src/thundersvm/kernel/kernelmatrix_kernel.cu:101: multiple definition of svm_kernel::get_working_set_ins(SyncData const&, SyncData const&, SyncData const&, SyncData const&, SyncData&, int)'
CMakeFiles/thundersvm.dir/kernel/kernelmatrix_kernel.cpp.o:kernelmatrix_kernel.cpp:(.text+0x0): first defined here
CMakeFiles/thundersvm.dir/kernel/thundersvm_generated_kernelmatrix_kernel.cu.o: In function svm_kernel::RBF_kernel(SyncData<float> const&, SyncData<float> const&, SyncData<float>&, int, int, float)': /workspace/thundersvm/src/thundersvm/kernel/kernelmatrix_kernel.cu:111: multiple definition of svm_kernel::RBF_kernel(SyncData const&, SyncData const&, SyncData&, int, int, float)'
CMakeFiles/thundersvm.dir/kernel/kernelmatrix_kernel.cpp.o:kernelmatrix_kernel.cpp:(.text+0x74): first defined here
CMakeFiles/thundersvm.dir/kernel/thundersvm_generated_kernelmatrix_kernel.cu.o: In function svm_kernel::RBF_kernel(SyncData<int> const&, SyncData<float> const&, SyncData<float>&, int, int, float)': /workspace/thundersvm/src/thundersvm/kernel/kernelmatrix_kernel.cu:119: multiple definition of svm_kernel::RBF_kernel(SyncData const&, SyncData const&, SyncData&, int, int, float)'
CMakeFiles/thundersvm.dir/kernel/kernelmatrix_kernel.cpp.o:kernelmatrix_kernel.cpp:(.text+0xf8): first defined here
CMakeFiles/thundersvm.dir/kernel/thundersvm_generated_kernelmatrix_kernel.cu.o: In function svm_kernel::poly_kernel(SyncData<float>&, float, float, int, int)': /workspace/thundersvm/src/thundersvm/kernel/kernelmatrix_kernel.cu:124: multiple definition of svm_kernel::poly_kernel(SyncData&, float, float, int, int)'
CMakeFiles/thundersvm.dir/kernel/kernelmatrix_kernel.cpp.o:kernelmatrix_kernel.cpp:(.text+0x17c): first defined here
CMakeFiles/thundersvm.dir/kernel/thundersvm_generated_kernelmatrix_kernel.cu.o: In function svm_kernel::sigmoid_kernel(SyncData<float>&, float, float, int)': /workspace/thundersvm/src/thundersvm/kernel/kernelmatrix_kernel.cu:128: multiple definition of svm_kernel::sigmoid_kernel(SyncData&, float, float, int)'
CMakeFiles/thundersvm.dir/kernel/kernelmatrix_kernel.cpp.o:kernelmatrix_kernel.cpp:(.text+0x200): first defined here
CMakeFiles/thundersvm.dir/kernel/thundersvm_generated_kernelmatrix_kernel.cu.o: In function svm_kernel::dns_csr_mul(int, int, int, SyncData<float> const&, SyncData<float> const&, SyncData<int> const&, SyncData<int> const&, int, SyncData<float>&)': /workspace/thundersvm/src/thundersvm/kernel/kernelmatrix_kernel.cu:138: multiple definition of svm_kernel::dns_csr_mul(int, int, int, SyncData const&, SyncData const&, SyncData const&, SyncData const&, int, SyncData&)'
CMakeFiles/thundersvm.dir/kernel/kernelmatrix_kernel.cpp.o:kernelmatrix_kernel.cpp:(.text+0x308): first defined here
CMakeFiles/thundersvm.dir/kernel/thundersvm_generated_smo_kernel.cu.o: In function _ZN6thrust6system4cuda6detail4cub_12DoubleBufferIiEC4Ev': /workspace/thundersvm/src/thundersvm/kernel/smo_kernel.cu:260: multiple definition of svm_kernel::c_smo_solve(SyncData const&, SyncData&, SyncData&, SyncData&, SyncData const&, float, float, SyncData const&, SyncData const&, int, float, SyncData&, int)'
CMakeFiles/thundersvm.dir/kernel/smo_kernel.cpp.o:smo_kernel.cpp:(.text+0x7e): first defined here
CMakeFiles/thundersvm.dir/kernel/thundersvm_generated_smo_kernel.cu.o: In function svm_kernel::nu_smo_solve(SyncData<int> const&, SyncData<float>&, SyncData<float>&, SyncData<float>&, SyncData<int> const&, float, SyncData<float> const&, SyncData<float> const&, int, float, SyncData<float>&, int)': /workspace/thundersvm/src/thundersvm/kernel/smo_kernel.cu:273: multiple definition of svm_kernel::nu_smo_solve(SyncData const&, SyncData&, SyncData&, SyncData&, SyncData const&, float, SyncData const&, SyncData const&, int, float, SyncData&, int)'
CMakeFiles/thundersvm.dir/kernel/smo_kernel.cpp.o:smo_kernel.cpp:(.text+0xdaa): first defined here
CMakeFiles/thundersvm.dir/kernel/thundersvm_generated_smo_kernel.cu.o: In function _ZN6thrust6system4cuda6detail4cub_23DeviceRadixSortDispatchILb0EfiiE12KernelConfigC4Ev': /workspace/thundersvm/src/thundersvm/kernel/smo_kernel.cu:300: multiple definition of svm_kernel::update_f(SyncData&, SyncData const&, SyncData const&, int)'
CMakeFiles/thundersvm.dir/kernel/smo_kernel.cpp.o:smo_kernel.cpp:(.text+0x2054): first defined here
CMakeFiles/thundersvm.dir/kernel/thundersvm_generated_smo_kernel.cu.o: In function svm_kernel::sort_f(SyncData<float>&, SyncData<int>&)': /workspace/thundersvm/src/thundersvm/kernel/smo_kernel.cu:305: multiple definition of svm_kernel::sort_f(SyncData&, SyncData&)'
CMakeFiles/thundersvm.dir/kernel/smo_kernel.cpp.o:smo_kernel.cpp:(.text+0x20af): first defined here
collect2: error: ld returned 1 exit status
make[2]: *** [lib/libthundersvm.so] Error 1
make[1]: *** [src/thundersvm/CMakeFiles/thundersvm.dir/all] Error 2
make: *** [all] Error 2

[shijiashuai]

seems that it failed to disable CPU code when compiling with GPU. I've just committed a new version. You may have a try.

[zccyman]

@shijiashuai I already solve this error. in thundersvm/kernel/*.cu, Make the following changes:

#ifdef USE_CUDA

#include <thrust/sort.h>
#include <thrust/system/cuda/detail/par.h>
#include "thundersvm/kernel/smo_kernel.h"

........
#endif

[zeyiwen]

Sounds good.

[shijiashuai]

@zccyman your solution will disable GPU codes, and CPU codes (in kernel/*.cpp) will be used. Although this may compile successfully, other issues will appear when you run the program.