hypre +sycl build failure

[balay]

ref: ./bin/spack install -j12 xsdk@1.0.0+sycl~trilinos~dealii %oneapi@2023.2.0

icpx  -O3 -fsycl -fsycl-unnamed-lambda  -DHAVE_CONFIG_H -I.. -I./.. -I./../struct_mv -I.    -qmkl -I/include -DMKL_ILP64 -I/software/intel/oneapi/mkl/2023.2.0/include      -I/software/intel/oneapi/include  -c memory.c -o memory.obj
In file included from device_utils.c:8:
./_hypre_onedpl.hpp:18:10: fatal error: 'oneapi/dpl/execution' file not found
#include <oneapi/dpl/execution>
         ^~~~~~~~~~~~~~~~~~~~~~

xsdk@pj01:~/spack.y$ find /software/intel/oneapi -name execution
/software/intel/oneapi/dpl/2022.2.0/linux/include/oneapi/dpl/execution

spack-build-out.txt

cc: @victorapm

[waynemitchell]

I don't see the oneDPL include directories listed in the compile line. I assume that is why it cannot find that file. It looks like you do not have the environment variable DPLROOT set, which is why that -I/include appears.

I will also warn that there have been issues with many versions of oneDPL, and it may be necessary for you to install a specific version to get hypre to run. By the way, what system are you on?

[balay]

This build is on a regular linux box [with oneapi compilers installed]

And its a sapck build - so perhaps its shouldn't rely on DPLROOT env variable? [or the spack spec needs appropriate dependencies to support hypre+sycl build?]

BTW: similar issue at: spack/spack#40565

[waynemitchell]

I'm not a spack user, nor do I know about the status of building hypre with the sycl backend via spack... so I'll let others comment on that end. It's definitely not something I've tested, so I can't say whether it's expected to work or not.

As for using the sycl build on a linux box, I don't think hypre will run if configured with sycl here. The sycl support is really only intended for use with Intel GPUs, and if no GPU is available, hypre will abort on initialization.

[balay]

ref: spack/spack#40722