[BUG] Lammps compilation fails when using low-precision mode USER-DEEPMD

[BaozCWJ]

Summary

The low-precision mode deepmd module cannot be compiled by LAMMPS

Deepmd-kit version, installation way, input file, running commands, error log, etc.

vserion: 2.0.0 devel branch
installation way: C++ interface
key commands:
cmake -DUSE_CUDA_TOOLKIT=true -DTENSORFLOW_ROOT=$tensorflow_root -DCMAKE_INSTALL_PREFIX=$deepmd_root -DFLOAT_PREC=low ..
After the compilation of low-precision deepmd, there's an error when compile lammps.

Steps to Reproduce

Following the step after the above cmake command from https://deepmd.readthedocs.io/en/master/install.html#install-the-c-interface, then the error will occur at the last step of Install LAMMPS’s DeePMD-kit module

Further Information, Files, and Links

[njzjz]

So why did I build conda packages successfully? 😂
Build log: https://dev.azure.com/deepmd-kit-recipes/dfe7535b-bc98-4288-9a49-be8914966e7a/_apis/build/builds/401/logs/63

[amcadmus]

If you change the precision of deepmd-kit package, the lammps module should be replace by doing the following in the lammps src dir

make no-user-deepmd
rm -fr USER-DEEPMD
cp -r /path/to/new/USER-DEEPMD .
make yes-user-deepmd

[BaozCWJ]

If you change the precision of deepmd-kit package, the lammps module should be replace by doing the following in the lammps src dir

make no-user-deepmd
rm -fr USER-DEEPMD
cp -r /path/to/new/USER-DEEPMD .
make yes-user-deepmd

I tried these steps and make clean-all, but it makes no difference.

[amcadmus]

Same as @njzjz I cannot reproduce this issue.

[njzjz]

@BaozCWJ you may post Makefile.package to let us see the compiling arguments.

[BaozCWJ]

@BaozCWJ you may post Makefile.package to let us see the compiling arguments.

Maybe the compilation environment has changed, I cannot reproduce this error today, but I think the key is whether to specify C++11 to compile lammps.

PS: In some environment ,maybe need to edit $lammps source dir/src/MAKE/Makefile.serial with adding -std=c++11 in CCFLAGS

[njzjz]

In #600, I added LAMMPS cmake builds to CI, and no error was raised there.

[njzjz]

Did you use C++ 8 or 9?

[BaozCWJ]

Denghui and I still cannot reproduce this bug, maybe it had been fixed or something else.
@amcadmus This issue can be closed now

Did you use C++ 8 or 9?