I was trying to compile some CUDA codes under visual studio 2010 with CUDA 4.2 (I created this CUDA project using Parallel Nsight 2.2), but I encountered an atomic problem "error : identifier "atomicAdd" is undefined", which I still can't solve after checking several forums.
So I tried to get some information from CUDA SDK Samples. First, I ran the simpleAtomicIntrinsics sample in CUDA SDK, which passed its test. Then, I copied all the files in this sample to a new CUDA 4.2 project in visual studio 2010 and compiled them, Here is the result.
1> E:\CUDA exercise Codes\CUDA_EXERCISES\CUDA_EXERCISES\CUDA_EXERCISES>"C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v4.2\bin\nvcc.exe" -gencode=arch=compute_20,code=\"sm_20,compute_20\" -gencode=arch=compute_20,code=\"sm_20,compute_20\" -gencode=arch=compute_10,code=\"sm_10,compute_10\" --use-local-env --cl-version 2010 -ccbin "c:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\bin" -I"C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v4.2\include" -G --keep-dir "Debug" -maxrregcount=0 --machine 32 --compile -g -Xcompiler "/EHsc /nologo /Od /Zi /MDd " -o "Debug\simpleAtomicIntrinsics.cu.obj" "E:\CUDA exercise Codes\CUDA_EXERCISES\CUDA_EXERCISES\CUDA_EXERCISES\simpleAtomicIntrinsics.cu"
1> simpleAtomicIntrinsics.cu
1> tmpxft_00007220_00000000-3_simpleAtomicIntrinsics.compute_20.cudafe1.gpu
1> tmpxft_00007220_00000000-7_simpleAtomicIntrinsics.compute_20.cudafe2.gpu
1> simpleAtomicIntrinsics.cu
1>e:\cuda exercise codes\cuda_exercises\cuda_exercises\cuda_exercises\simpleAtomicIntrinsics_kernel.cu(33): error : identifier "atomicAdd" is undefined
1>
1>e:\cuda exercise codes\cuda_exercises\cuda_exercises\cuda_exercises\simpleAtomicIntrinsics_kernel.cu(36): error : identifier "atomicSub" is undefined
1>
1>e:\cuda exercise codes\cuda_exercises\cuda_exercises\cuda_exercises\simpleAtomicIntrinsics_kernel.cu(39): error : identifier "atomicExch" is undefined
1>
1>e:\cuda exercise codes\cuda_exercises\cuda_exercises\cuda_exercises\simpleAtomicIntrinsics_kernel.cu(42): error : identifier "atomicMax" is undefined
1>
1>e:\cuda exercise codes\cuda_exercises\cuda_exercises\cuda_exercises\simpleAtomicIntrinsics_kernel.cu(45): error : identifier "atomicMin" is undefined
1>
1>e:\cuda exercise codes\cuda_exercises\cuda_exercises\cuda_exercises\simpleAtomicIntrinsics_kernel.cu(48): error : identifier "atomicInc" is undefined
1>
1>e:\cuda exercise codes\cuda_exercises\cuda_exercises\cuda_exercises\simpleAtomicIntrinsics_kernel.cu(51): error : identifier "atomicDec" is undefined
1>
1>e:\cuda exercise codes\cuda_exercises\cuda_exercises\cuda_exercises\simpleAtomicIntrinsics_kernel.cu(54): error : identifier "atomicCAS" is undefined
1>
1>e:\cuda exercise codes\cuda_exercises\cuda_exercises\cuda_exercises\simpleAtomicIntrinsics_kernel.cu(59): error : identifier "atomicAnd" is undefined
1>
1>e:\cuda exercise codes\cuda_exercises\cuda_exercises\cuda_exercises\simpleAtomicIntrinsics_kernel.cu(62): error : identifier "atomicOr" is undefined
1>
1>e:\cuda exercise codes\cuda_exercises\cuda_exercises\cuda_exercises\simpleAtomicIntrinsics_kernel.cu(65): error : identifier "atomicXor" is undefined
1>
1> 11 errors detected in the compilation of "C:/Users/NIEXIA~1/AppData/Local/Temp/tmpxft_00007220_00000000-9_simpleAtomicIntrinsics.compute_10.cpp1.ii".
1>C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\BuildCustomizations\CUDA 4.2.targets(361,9): error MSB3721: The command ""C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v4.2\bin\nvcc.exe" -gencode=arch=compute_20,code=\"sm_20,compute_20\" -gencode=arch=compute_20,code=\"sm_20,compute_20\" -gencode=arch=compute_10,code=\"sm_10,compute_10\" --use-local-env --cl-version 2010 -ccbin "c:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\bin" -I"C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v4.2\include" -G --keep-dir "Debug" -maxrregcount=0 --machine 32 --compile -g -Xcompiler "/EHsc /nologo /Od /Zi /MDd " -o "Debug\simpleAtomicIntrinsics.cu.obj" "E:\CUDA exercise Codes\CUDA_EXERCISES\CUDA_EXERCISES\CUDA_EXERCISES\simpleAtomicIntrinsics.cu"" exited with code 2.
1>
1>Build FAILED.
By the way, I can run other samples such as clock, matrixMul, etc. under this vs2010 CUDA Project. (This means the include path is set correctly)
I googled it and found the following link Some issue with Atomic add in CUDA kernel operation. I changed the properties of both project and the .cu file according to it, but still can't solve the problem.
Any suggestion?
Atomics are unavailable under compute architecture 1.0, but you're still trying to compile for it according to your build log. Try removing references to compute_10 and sm_10 from your CUDA project properties and compiling for just compute architecture 2.0 (GeForce 400 series and newer).
Try to compile with the flag -arch sm_20
"Atomics are unavailable under compute architecture 1.0, but you're still trying to compile for it according to your build log. Try removing references to compute_10 and sm_10 from your CUDA project properties and compiling for just compute architecture 2.0 (GeForce 400 series and newer)." It's absolutely right,BTW,if you guys are compiling rodrigob_doppia's source code(boosted_learning),you can just add the line in your machine configuration: set(CUDA_NVCC_FLAGS "-arch=sm_20" CACHE STRING "nvcc flags" FORCE) Actually,it is set to switch the arch flag to sm_20,just the same as the saying above.
来源：https://stackoverflow.com/questions/11532728/error-identifier-atomicadd-is-undefined-under-visual-studio-2010-cuda-4-2