GOOD 2025

OOD Meets EESSI: Accessing and Distributing Scientific Software with Ease
03-19, 09:30–09:55 (US/Eastern), Tsai Auditorium (CGIS S010)

This presentation will provide an overview of the EESSI project and its objectives, as well as our plans to integrate it into the OOD platform. This will allow for combined easy access to both scientific software and HPC resources in a single platform.


In the HPC space there is a push to improve accessibility and lower the entry barrier to users. Thus, they can focus solely on science and not deal with the intricacies of HPC systems, which can be pretty obscure to non HPC experts. The OOD platform is the result of such efforts and has become sort of a standard: many of the supercomputers around the world provide it as one of the ways to access and interact with the HPC system.
OOD deals mainly with accessibility to the HPC resources, but there is another aspect to accessibility: scientific software availability. Installation of scientific software is rather complex, since it is not sufficient for it to work, but must also perform.

Here enters the European Environment for Scientific Software Installations (EESSI) project, that provides a complete and optimized scientific software stack accessible from many different platforms: personal workstations, cloud and supercomputers. This allows users to work with the same software environment, regardless of the platform, OS, or architecture.

Two distinct projects with different aims, but complementary: EESSI provides the scientific software and OOD the way to access it.

Christian is an HPC Engineer at Do It Now's R&D department. He holds a degree in Computer Engineering from the University of A Coruña and a Master’s in High-Performance Computing (HPC) from UDC and USC. After three years as a full-stack developer, he shifted to HPC, driven by its potential and constant evolution. At Do It Now, he works on projects to develop new solutions for the HPC ecosystem. His focus on Open OnDemand (OOD) includes customized installations tailored to each client’s needs, advising on environments and configurations, integrating custom apps and existing tools, and ensuring seamless, efficient deployments adapted to each case. His goal is to improve usability and performance while simplifying access to HPC resources.

Arturo Gimeno González is an HPC Engineer at Do It Now, where he has been working for the past three years. He holds a degree in Networked Computer Systems Administration (ASIX) from the Institut Tecnològic de Barcelona.
As part of the support team, Arturo is responsible for handling tickets from various clients in the High-Performance Computing (HPC) field, which use Open OnDemand to make it easier for users who are not familiar with Linux system. His work includes troubleshooting issues, optimizing environments, and compiling applications using EasyBuild, ensuring that each software is correctly configured and tailored to the specific needs of each client.
His focus is on delivering efficient and customized solutions, guaranteeing maxim