The supercomputer is housed in the deconsecrated Chapel Torre Girona[2] at the Polytechnic University of Catalonia, Barcelona, Spain.

It will include an experimental platform dedicated to testing and developing European supercomputing technologies.

These technologies are currently being developed in the United States and Japan to speed up the arrival of the new generation of pre-exascale supercomputers.

[7] The computing nodes of MareNostrum 3 communicated primarily through a high bandwidth, low latency InfiniBand FDR10 network.

[8] These older version has been based on a 2,560 IBM BladeCenter JS21 nodes with PowerPC 970MP processors and with 20 TB system memory.

[9] The supercomputer MareNostrum 4 is used in various research areas, ranging from predicting climate change to biomechanics and the analysis of Big Data.

Another project investigates aerosols and how they interact with the atmospheric system by dispersing and absorbing solar radiation.

Projects in this area cover services for agriculture and water management, ocean forecasting, the study of tropical cyclones, and determining the most efficient locations for wind turbines.

Projects include reducing pollutant emissions, drug design, and assisting in fluid mechanics computations, among others.