Porting the LCG software stack to the ARM architecture

During Summer 2019 I joined the Software Development for Experiments group, which develops and maintains common scientific software for the physics experiments. My role was to investigate the possibility to provide builds for ARM 64 architecture, perform experiments, with the task of porting the LCG software stack to an ARM64 architecture. In the first section I set the context for my work, reminding what is ARM and the role it can have in HEP computing; for this I also review the findings of some earlier works form LHCb and ATLAS. In the following section I will present my work, discuss the difficulties I have found and show some early benchmark results. I will finally outline what are the natural steps forward for this work.