Platform: computational resources

Since 2018, the CARAMBA team has been using in particular a computer cluster called grvingt , acquired in 2018. This equipment was funded by the CPER «CyberEntreprises» (French Ministry of Research, Région Grand Est, Inria, CNRS) and comprises a 64-node, 2,048-core cluster. This cluster is installed in the Inria facility. Other slightly older hardware (a medium-size cluster called grcinq from 2013, funded by ANR, and a special machine funded by the aforementioned CPER grant) is also installed in the same location, to form a coherent platform with about 3,000 cpu cores, 100 TB of storage, and specific machines for RAM-demanding computations. As a whole, this platform provides an excellent support for the computational part of the work done in CARAMBA. This platform is also embedded in the larger Grid'5000/Silecs platform (and accessible as a normal resource within this platform). Technical administration is done by the Grid'5000 staff.

This equipment has played a key role in the record factorization of RSA-240 as well as the computation of discrete logarithms modulo a 240-digit prime, completed in the end of 2019.