V2 project (hack_DC_TGV branch): benchmarking on CPUs/GPUs with various compilers (GCC, NVIDIA, Intel) for the TGV case

[pbartholomew08]

compilation of data for the TGV case on CPUs/GPUs for each version of x3div (when TGV capability is available). The aim is to produce strong and weak scaling plots for various spatial resolution (from 65^3 to 2049^3) with as much compute nodes as possible.

Data should be collected in a way that they can be reproducible (compiler version, mpi version, github version, etc.)

Data should first be collected for ARCHER2.

One issue is to agree on a way to measure the performance (current MPI tools might not be the correct way of doing this).

To be discussed: how and where to store the data on Github