Comments (4)
hjabird
commented on June 3, 2024
1
Those linker errors suggest you're trying to use the LAPACK interface. However, building with the cuBLAS backend doesn't enable this - that is the BLAS interface only.
I think (for I've never used it!) that you need to additionally enable the cuSOLVER backend to avoid these linking issues. You can do this by setting -DENABLE_CUSOLVER_BACKEND=ON.
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hjabird
commented on June 3, 2024
Hi vidyalathabadde! Do you want to build the unit tests? If not, set -DBUILD_FUNCTIONAL_TESTS=OFF.
Additionally, I cound that setting True and False didn't work. Try something similar to the following:
cmake ../oneMKL/ -GNinja -DCMAKE_CXX_COMPILER=icpx -DCMAKE_C_COMPILER=icx -DENABLE_CUBLAS_BACKEND=ON -DENABLE_MKLCPU_BACKEND=OFF -DENABLE_MKLGPU_BACKEND=O
FF -DBUILD_FUNCTIONAL_TESTS=OFF
(albeit with clang++ and clang, and whatever path you'd prefer.)
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vidyalathabadde
commented on June 3, 2024
Hi @hjabird,
Thank you so much for your reply. Yeah with the above command, I'm able to build the oneMKL for cuda BE.
But when I'm trying to link it with my code during compilation it gives the undefined references error.
/usr/bin/ld: /tmp/simpleCUBLAS_LU-9dfaa3.o: in function `oneapi::mkl::lapack::getrf_batch(sycl::_V1::queue&, long*, long*, double**, long*, long**, long, long*, double*, long, std::vector<sycl::_V1::event, std::allocator<sycl::_V1::event> > const&)':
simpleCUBLAS_LU-f4c50e.cpp:(.text+0x280f): undefined reference to `oneapi::mkl::lapack::detail::getrf_batch(oneapi::mkl::device, sycl::_V1::queue&, long*, long*, double**, long*, long**, long, long*, double*, long, std::vector<sycl::_V1::event, std::allocator<sycl::_V1::event> > const&)'
/usr/bin/ld: /tmp/simpleCUBLAS_LU-9dfaa3.o: in function `_ZN6oneapi3mkl6lapack27getrf_batch_scratchpad_sizeIdTnPNS1_8internal9enable_ifIXsr5is_fpIT_EE5valueEvE4typeELPv0EEElRN4sycl3_V15queueEPlSE_SE_lSE_':
simpleCUBLAS_LU-f4c50e.cpp:(.text._ZN6oneapi3mkl6lapack27getrf_batch_scratchpad_sizeIdTnPNS1_8internal9enable_ifIXsr5is_fpIT_EE5valueEvE4typeELPv0EEElRN4sycl3_V15queueEPlSE_SE_lSE_[_ZN6oneapi3mkl6lapack27getrf_batch_scratchpad_sizeIdTnPNS1_8internal9enable_ifIXsr5is_fpIT_EE5valueEvE4typeELPv0EEElRN4sycl3_V15queueEPlSE_SE_lSE_]+0x4c): undefined reference to `_ZN6oneapi3mkl6lapack6detail27getrf_batch_scratchpad_sizeIdTnPNS1_8internal9enable_ifIXsr5is_fpIT_EE5valueEvE4typeELPv0EEElNS0_6deviceERN4sycl3_V15queueEPlSG_SG_lSG_'
clang++: error: linker command failed with exit code 1 (use -v to see invocation)
command used:
clang++ -fsycl -fsycl-targets=nvptx64-nvidia-cuda *.cpp -I../../../Common/ -I ../../../include/ -I oneMKL/build/oneMKL_installation/include/ -L oneMKL/build/oneMKL_installation/lib/ -lonemkl_blas_cublas -lonemkl
Could you please help me out with this issue?
Thanks,
Vidya.
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vidyalathabadde
commented on June 3, 2024
Thanks a lot for your assistance @hjabird. It works. I'm able to compile and run the code successfully now.
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Related Issues (20)
- cublas supports 64-bit interface
- Support external workspace and workspace size query in DFT domain HOT 8
- Layout mismatch HOT 3
- Don't use `sycl::detail` namespace HOT 2
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