Questions about using allegro's kokkos acceleration

[chenmao001]

Hello, dear developers，After I tried some operations, I encountered some problems:

I used LAMMPS+allegro and LAMMPS+kokkos+allegro to simulate the atoms respectively. From the log of LAMMPS, I can see that using kokkos did not accelerate the effect, but increased the comm time in lammps. This is what reason?
Is my compile option wrong? I refer to: https://github.com/mir-group/pair_allegro
Have you ever encountered the above situation? How should I solve this problem?

[Linux-cpp-lisp]

Hi @chenmao001 ,

Kokkos is only helpful if you are using a GPU. If you are using a GPU, this is likely due to a system-specific issue with how Kokkos and communication libraries were compiled on your platform... this can be quite finicky and sometimes using things that should be faster like GPU-GPU MPI can fail to help if setup incorrectly on the system or compilation.

I would recommend doing some tests on other Kokkos pair styles built into LAMMPS and consulting your system administrator.