Jorge Gomes (LIP, Lisbon), Emanuele Bagnaschi (DESY), Isabel Campos (Cantabria Inst. of Phys.), Mario David (LIP, Lisbon), Luís Alves (LIP, Lisbon), João Martins (LIP, Lisbon), João Pina (LIP, Lisbon), Alvaro López-García (Cantabria Inst. of Phys.), Pablo Orviz (Cantabria Inst. of Phys.)

Comput.Phys.Commun. 232 (2018) 84-97

DOI: 10.1016/j.cpc.2018.05.021

e-print: 1711.01758 [cs.SE]

Containers are increasingly used as means to distribute and run Linux services and applications. In this paper we describe the architectural design and implementation of ${\tt udocker}$, a tool which enables the user to execute Linux containers in user mode. We also present a few practical applications, using a range of scientific codes characterized by different requirements: from single core execution to MPI parallel execution and execution on GPGPUs.