This audit examined weak and strong scaling of the GPU-enabled version 4.0.0 of the SPECFEM3D application on Leonardo-B quad-A100 accelerated compute nodes using a testcase with a single source in elastic domain and four seismic receiver stations.

SPECFEM3D is an open-source software package for simulation of seismic wave propagation based on the spectral element method developed by CNRS/F within the EuroHPC Centre of Excellence for Solid Earth (ChEESE).  It is written primarily in Fortran90 parallelised with MPI+CUDA, employing an MPI process for each available GPU.