search for: cuda

Hi, I needed to debug some CUDA code in my project; however, although I used -g when compiling the source code, no source-level information is available in cuda-gdb or cuda-memcheck. Specifically, below is what I did: 1) For a CUDA file a.cu, generate IR files: clang++ -g -emit-llvm --cuda-gpu-arch=sm_35 -c a.cu; 2) Instrum...

Hello everybody, i am currently testing the NVPTX back-end and playing around with the IR it generates. Unfortunately i have come to an compilation error i cannot solve on my own. Maybe someone reading this knows what is causing the trouble and has a possible solution. I am using Ubuntu 16.04, Cuda 7.5 and clang version 3.9.0 (https://github.com/llvm-mirror/clang.git 2869a420162946c5eecaa3742fc9c50a698d7a61) (https://github.com/llvm-mirror/llvm.git 56547528a22d290a2e8b2c40810abb8117a8a6bc) I have attached my source code which i try to compile with clang++ (it is just for testing so the c...

I was wondering if anyone has encountered this issue when cross compiling cuda on Nvidia TX2 running android. The error is In file included from <built-in>:1: In file included from prebuilts/clang/host/linux-x86/clang-4667116/lib64/clang/7.0.1/include/__clang_cuda_runtime_wrapper.h:219: ../cuda/targets/aarch64-linux-androideabi/include/math_functions.hpp:3477:19: error...

Yes, I followed the guide. The same error showed up: >clang++ axpy.cu -o axpy --cuda-gpu-arch=sm_35 -L/usr/local/cuda/lib64 -I/usr/local/cuda/include -lcudart_static -ldl -lrt -pthread error: unable to create target: 'No available targets are compatible with this triple.' ________________________________ From: Kevin Choi <code.kchoi at gmail.com> Sent: Wednesday, A...

Hi, I work in a large CUDA codebase and use Clang to build some of our CUDA code to improve compilation speed. We're planning to upgrade to CUDA 11 soon, and it appears that CUDA 11 is not yet supported in LLVM. >From the LLVM commits history, I can see that work on CUDA 11 has started. Is this currently being worked...

Hi, First of all, i'm not sure if i should be posting this here or in cfe-dev, but here it goes. In order to instrument CUDA kernels i first generate device IR with: clang++ -x cuda --cuda-device-only -emit-llvm --cuda-gpu-arch=sm_52 -o device.bc I also have a library that contains the instrumentation stubs for which i generate IR similarly and i link it with the device IR programmatically with Linker::linkModules(....

vychytraly . wrote: > On Thu, Oct 5, 2017 at 9:51 PM, <m.roth at 5-cent.us> wrote: >> >> So, kmod-nvidia installed. Trouble is, I have no tool to test it. And my >> user might need nvcc, which, of course, is only provided by the NVidia >> CUDA, which won't install, because it conflicts with kmod-nvidia. >> >> Has *anyone* dealt with this? If so, what was your solution? >> > Are you installing CUDA from official NVidia repository? Please don't top post. Why, is there some other? I did try, last week, and wen...

+Artem Belevich <tra at google.com> On Fri, Mar 23, 2018 at 7:53 PM Bharath Bhoopalam via llvm-dev < llvm-dev at lists.llvm.org> wrote: > I was wondering if anyone has encountered this issue when cross compiling > cuda on Nvidia TX2 running android. > > The error is > In file included from <built-in>:1: > In file included from > prebuilts/clang/host/linux-x86/clang-4667116/lib64/clang/7.0.1/include/__clang_cuda_runtime_wrapper.h:219: > ../cuda/targets/aarch64-linux-androideabi/include/math...

I'm building a simple R extension around a CUDA-enabled dynamic library, and I want to run the whole package with cuda-memcheck for debugging purposes. I can run it just fine with Valgrind: $ R --no-save -d valgrind < test.R However, if I try the same thing with cuda-memcheck, $ R --no-save -d cuda-memcheck < test.R I get: *** Further...

...ble to > choose PTX 6.0 though. > > ~ Johannes > > > On 9/24/20 1:02 PM, George K via llvm-dev wrote: >> Hi, >> >> First of all, i'm not sure if i should be posting this here or in >> cfe-dev, but here it goes. >> >> In order to instrument CUDA kernels i first generate device IR with: >> >> clang++ -x cuda --cuda-device-only -emit-llvm --cuda-gpu-arch=sm_52 >> -o device.bc >> >> I also have a library that contains the instrumentation stubs for >> which i generate IR similarly and i link it with the de...

Hello, Can anyone help me with the default installation locations of CUDA headers in Windows and macOS ? e.g. /usr/local/cuda/include is the default for Linux. Thanks, Sanjay -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20170522/ca97c66b/attachment.html>

Hi, I have trouble compiling CUDA code with Clang. The following is a command I tried: > clang++ axpy.cu -o axpy --cuda-gpu-arch=sm_35 --cuda-path=/usr/local/cuda The error message is error: unable to create target: 'No available targets are compatible with this triple.' The info of the LLVM I'm using is as f...

OK, I see the problem. You were right that we weren't picking up libdevice. CUDA 7.0 only ships with the following libdevice binaries (found /path/to/cuda/nvvm/libdevice): libdevice.compute_20.10.bc libdevice.compute_30.10.bc libdevice.compute_35.10.bc If you ask for sm_50 with cuda 7.0, clang can't find a matching libdevice binary, and it will apparently silently give...

...on: /usr/lib/gcc/x86_64-linux-gnu/4.9* *Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.9.3* *Selected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.8* *Candidate multilib: .;@m64* *Candidate multilib: 32;@m32* *Candidate multilib: x32;@mx32* *Selected multilib: .;@m64* *Found CUDA installation: /usr/local/cuda* * "/usr/local/bin/clang-3.9" -cc1 -triple nvptx64-nvidia-cuda -aux-triple x86_64-unknown-linux-gnu -S -disable-free -main-file-name scalarProd.cu -mrelocation-model static -mthread-model posix -mdisable-fp-elim -fmath-errno -no-integrated-as -fcuda-is-device...

Dear all, In the official document <https://llvm.org/docs/CompileCudaWithLLVM.html>, it is mentioned that CUDA compilation is supported on Windows as of 2017-01-05. I used msys2 to install clang 5.0.1. Then I installed cuda 8.0. However, I basically could not compile any code of cuda by the prescribed setting. I wounder if anyone can successfully compile cuda cod...

Sound right now like you are emitting an LLVM module? The best strategy is probably to use to emit a PTX module and then pass that to the CUDA driver. This is what we do on the Julia side in CUDA.jl. Nvidia has a somewhat helpful tutorial on this at https://github.com/NVIDIA/cuda-samples/blob/c4e2869a2becb4b6d9ce5f64914406bf5e239662/Samples/vectorAdd_nvrtc/vectorAdd.cpp and https://github.com/NVIDIA/cuda-samples/blob/c4e2869a2becb4b6d9ce...

We have an application that allows the user to compile and execute C++ code on the fly, using Orc JIT v2, via the LLJIT class. And we would like to extend it to allow the user to provide CUDA source code as well, for GPU programming. But I am having a hard time figuring out how to do it. To JIT compile C++ code, we do basically as follows: 1. call Driver::BuildCompilation(), which returns a clang Command to execute 2. create a CompilerInvocation using the arguments from the Command 3....

Hi everyone, CUDA allows to call some runtime functions also from the device code. On a multi-GPU system this allows the GPU to determine its device id on its own via cudaGetDevice(). Unfortunately i cannot get it working when compiling with clang. When compiling with nvcc relocatable device code needs to be set...

Hi, I wanted to ask whether there is ongoing effort (or an already established tool) that enables to convert CUDA kernels (that uses CUDA specific intrinsics, e.g., threadId.x, __syncthreads(), ...) to LLVM IR. I am aware that I can do this for OpenCL with the help of libclc but I can not find something similar for CUDA. Thanks -------------- next part -------------- An HTML attachment was scrubbed... URL: &l...

Hi, Yuanfeng. What version of clang are you using? CUDA is only known to work at tip of head, so you must build clang yourself from source. I suspect that's your problem, but if building from source doesn't fix it, please attach the output of compiling with -v. Regards, -Justin On Sun, Jul 31, 2016 at 9:24 PM, Chandler Carruth <chandlerc a...