[Openmp-dev] OpenMP offloading to the sm_35 device from x86 compute nodes

Sat Mar 16 01:09:30 PDT 2019

Doru et al.,
After checking the CUDA_ROOT environment variable gets set properly, I
configured the
Makefile for my application with CMake, however:

 -- Could NOT find LIBOMPTARGET_DEP_LIBFFI (missing:
LIBOMPTARGET_DEP_LIBFFI_LIBRARIES LIBOMPTARGET_DEP_LIBFFI_INCLUDE_DIRS)
CMake Warning (dev) at
/p/project/cjzam11/kitayama1/projects/llvm-project/openmp/libomptarget/cmake/Modules/LibomptargetGetDependencies.cmake:117
(find_package):
  Policy CMP0074 is not set: find_package uses <PackageName>_ROOT variables.
  Run "cmake --help-policy CMP0074" for policy details.  Use the
cmake_policy
  command to set the policy and suppress this warning.

  Environment variable CUDA_ROOT is set to:

    /usr/local/software/jureca/Stages/2018b/software/CUDA/9.2.88

  For compatibility, CMake is ignoring the variable.
Call Stack (most recent call first):

/p/project/cjzam11/kitayama1/projects/llvm-project/openmp/libomptarget/CMakeLists.txt:30
(include)
This warning is for project developers.  Use -Wno-dev to suppress it.

-- LIBOMPTARGET: Building offloading runtime library libomptarget.
-- LIBOMPTARGET: Not building aarch64 offloading plugin: machine not found
in the system.
-- LIBOMPTARGET: Building CUDA offloading plugin.
-- LIBOMPTARGET: Not building PPC64 offloading plugin: machine not found in
the system.
-- LIBOMPTARGET: Not building PPC64le offloading plugin: machine not found
in the system.
-- LIBOMPTARGET: Not building x86_64 offloading plugin: libffi dependency
not found.
-- LIBOMPTARGET: Building CUDA offloading device RTL.
CMake Error at
/p/project/cjzam11/kitayama1/projects/llvm-project/openmp/libomptarget/cmake/Modules/LibomptargetUtils.cmake:26
(message):
  LIBOMPTARGET: Cannot build CUDA LLVM bitcode offloading device RTL!
Call Stack (most recent call first):

/p/project/cjzam11/kitayama1/projects/llvm-project/openmp/libomptarget/deviceRTLs/nvptx/CMakeLists.txt:115
(libomptarget_error_say)

I'm at today's HEAD of Trunk of llvm-project.

On Sat, Mar 16, 2019 at 6:27 AM Gheorghe-Teod Bercea <
Gheorghe-Teod.Bercea at ibm.com> wrote:

> This typically happens when cmake cannot find the CUDA installation.
>
> Thanks,
>
> --Doru
>
>
>
>
> From:        Itaru Kitayama via Openmp-dev <openmp-dev at lists.llvm.org>
> To:        Lukas Sommer <sommer at esa.tu-darmstadt.de>
> Cc:        openmp-dev at lists.llvm.org
> Date:        03/15/2019 04:50 PM
> Subject:        Re: [Openmp-dev] OpenMP offloading to the sm_35 device
> from x86 compute nodes
> Sent by:        "Openmp-dev" <openmp-dev-bounces at lists.llvm.org>
> ------------------------------
>
>
>
> At the HEAD of Trunk of llvm-project, CMake seems to disregards these
> variables:
> [...]
> CMake Warning:
>   Manually-specified variables were not used by the project:
>
>     CLANG_OPENMP_NVPTX_DEFAULT_ARCH
>     LIBOMPTARGET_NVPTX_COMPUTE_CAPABILITIES
>
> Have you had a chance to build the latest one?
>
> On Fri, Mar 15, 2019 at 6:28 PM Lukas Sommer via Openmp-dev <
> *openmp-dev at lists.llvm.org* <openmp-dev at lists.llvm.org>> wrote:
> Hi,
>
> I've been building the offloading toolchain for Nvidia GPUs on x86-systems
> before and found Jonas Hahnfeld's blog-post extremely useful to setup the
> compiler:
>
>
> *https://www.hahnjo.de/blog/2018/10/08/clang-7.0-openmp-offloading-nvidia.html*
> <https://www.hahnjo.de/blog/2018/10/08/clang-7.0-openmp-offloading-nvidia.html>
>
> Best regards,
>
> Lukas Sommer
>
> On 3/15/19 10:23 AM, Alexey Bataev via Openmp-dev wrote:
> I'm not sure about it, there are some others who can help with this.
>
> Best regards,
> Alexey Bataev
>
> 15 марта 2019 г., в 5:08, Itaru Kitayama <*itaru.kitayama at gmail.com*
> <itaru.kitayama at gmail.com>> написал(а):
>
> Thanks. Does setting
>
> LLVM_ENABLE_PROJECTS:STRING=clang;openmp;llvm
>
> enough to create the corresponding .bc lib?
>
> On Fri, Mar 15, 2019 at 6:01 PM Alexey Bataev <*a.bataev at hotmail.com*
> <a.bataev at hotmail.com>> wrote:
> Yes, it should support it.
>
> Best regards,
> Alexey Bataev
>
> > 15 марта 2019 г., в 4:55, Itaru Kitayama via Openmp-dev <
> *openmp-dev at lists.llvm.org* <openmp-dev at lists.llvm.org>> написал(а):
> >
> > Hi,
> > I'm wondering if LLVM/Clang supports OpenMP offloading to NVIDA
> > targets from x86 nodes.
> >
> > Thanks,
> > Itaru.
> > _______________________________________________
> > Openmp-dev mailing list
> > *Openmp-dev at lists.llvm.org* <Openmp-dev at lists.llvm.org>
> > *https://lists.llvm.org/cgi-bin/mailman/listinfo/openmp-dev*
> <https://lists.llvm.org/cgi-bin/mailman/listinfo/openmp-dev>
>
> _______________________________________________
> Openmp-dev mailing list
> *Openmp-dev at lists.llvm.org* <Openmp-dev at lists.llvm.org>
> *https://lists.llvm.org/cgi-bin/mailman/listinfo/openmp-dev*
> <https://lists.llvm.org/cgi-bin/mailman/listinfo/openmp-dev>
>
> _______________________________________________
> Openmp-dev mailing list
> *Openmp-dev at lists.llvm.org* <Openmp-dev at lists.llvm.org>
> *https://lists.llvm.org/cgi-bin/mailman/listinfo/openmp-dev*
> <https://lists.llvm.org/cgi-bin/mailman/listinfo/openmp-dev>
> _______________________________________________
> Openmp-dev mailing list
> Openmp-dev at lists.llvm.org
> https://lists.llvm.org/cgi-bin/mailman/listinfo/openmp-dev
>
>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/openmp-dev/attachments/20190316/c3dad70f/attachment-0001.html>