Public bug reported: Ubuntu 18.04 LTS ships CUDA 9.1.85 which is broken with provided GCC compilers in a slightly complex way.
By default, the g++ compiler version is 7.4.0, which is not supported by CUDA/NVCC 9.1.85. Next, CUDA/NVCC 9.1.85 should have provided support for g++ 6. But the release overlooked an incompatibility with std::tuple which renders this compiler combination not useful either: https://gist.github.com/ax3l/9489132 Consequently, users that want to use mature C++11/14 features can still switch to install a g++-5 package on Ubuntu 18.04 but this compiler has another set of bugs in signatures of gather/scatter intrinsics which were fixed in later GCC releases. This fix was unfortunately not backported to GCC 5.5 . https://gcc.gnu.org/bugzilla/show_bug.cgi?id=76731 In order to make NVCC+GCC work together on Ubuntu 18.04, I would recommend to backport the small patches of three intrinsic files with broken signatures to the g++-5 (specifically the libgcc-5-dev) packages: https://stackoverflow.com/a/50815334/2719194 Thanks a lot for considering, Axel ** Affects: gcc-5 (Ubuntu) Importance: Undecided Status: New ** Affects: nvidia-cuda-toolkit (Ubuntu) Importance: Undecided Status: New ** Also affects: nvidia-cuda-toolkit (Ubuntu) Importance: Undecided Status: New ** Description changed: Ubuntu 18.04 LTS ships CUDA 9.1.85 which is broken with provided GCC compilers in a slightly complex way. By default, the g++ compiler version is 7.4.0, which is not supported by CUDA/NVCC 9.1.85. Next, CUDA/NVCC 9.1.85 should have provided support for g++ 6. But the release overlooked an incompatibility with std::tuple which renders this compiler combination not useful either: - https://gist.github.com/ax3l/9489132 + https://gist.github.com/ax3l/9489132 - Consequently, users that want to use mature C++11/14 features can still switch to install a g++-5 package on Ubuntu 18.04 but this compilers has another set of bugs in gather/scatter intrinsics which were fixed in later GCC releases. This fix was unfortunately not backported to GCC 5.5 . - https://gcc.gnu.org/bugzilla/show_bug.cgi?id=76731 + Consequently, users that want to use mature C++11/14 features can still switch to install a g++-5 package on Ubuntu 18.04 but this compiler has another set of bugs in gather/scatter intrinsics which were fixed in later GCC releases. This fix was unfortunately not backported to GCC 5.5 . + https://gcc.gnu.org/bugzilla/show_bug.cgi?id=76731 In order to make NVCC+GCC work together on Ubuntu 18.04, I would recommend to backport the small patches of three intrinsic files with broken signatures to the g++-5 (specifically the libgcc-5-dev) packages: - https://stackoverflow.com/a/50815334/2719194 + https://stackoverflow.com/a/50815334/2719194 Thanks a lot for considering! Axel ** Description changed: Ubuntu 18.04 LTS ships CUDA 9.1.85 which is broken with provided GCC compilers in a slightly complex way. By default, the g++ compiler version is 7.4.0, which is not supported by CUDA/NVCC 9.1.85. Next, CUDA/NVCC 9.1.85 should have provided support for g++ 6. But the release overlooked an incompatibility with std::tuple which renders this compiler combination not useful either: https://gist.github.com/ax3l/9489132 Consequently, users that want to use mature C++11/14 features can still switch to install a g++-5 package on Ubuntu 18.04 but this compiler has another set of bugs in gather/scatter intrinsics which were fixed in later GCC releases. This fix was unfortunately not backported to GCC 5.5 . https://gcc.gnu.org/bugzilla/show_bug.cgi?id=76731 In order to make NVCC+GCC work together on Ubuntu 18.04, I would recommend to backport the small patches of three intrinsic files with broken signatures to the g++-5 (specifically the libgcc-5-dev) packages: https://stackoverflow.com/a/50815334/2719194 - Thanks a lot for considering! + Thanks a lot for considering, Axel ** Description changed: Ubuntu 18.04 LTS ships CUDA 9.1.85 which is broken with provided GCC compilers in a slightly complex way. By default, the g++ compiler version is 7.4.0, which is not supported by CUDA/NVCC 9.1.85. Next, CUDA/NVCC 9.1.85 should have provided support for g++ 6. But the release overlooked an incompatibility with std::tuple which renders this compiler combination not useful either: https://gist.github.com/ax3l/9489132 - Consequently, users that want to use mature C++11/14 features can still switch to install a g++-5 package on Ubuntu 18.04 but this compiler has another set of bugs in gather/scatter intrinsics which were fixed in later GCC releases. This fix was unfortunately not backported to GCC 5.5 . + Consequently, users that want to use mature C++11/14 features can still switch to install a g++-5 package on Ubuntu 18.04 but this compiler has another set of bugs in signatures of gather/scatter intrinsics which were fixed in later GCC releases. This fix was unfortunately not backported to GCC 5.5 . https://gcc.gnu.org/bugzilla/show_bug.cgi?id=76731 In order to make NVCC+GCC work together on Ubuntu 18.04, I would recommend to backport the small patches of three intrinsic files with broken signatures to the g++-5 (specifically the libgcc-5-dev) packages: https://stackoverflow.com/a/50815334/2719194 Thanks a lot for considering, Axel -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1865091 Title: Backport broken scatter/gather Signatures To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gcc-5/+bug/1865091/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
