Barcelona Supercomputing Centre - MareNostrum5 - showing storage nodes in server cabinets. Colour coded wiring - blue for Storage node, Red for computation node, yellow for networking (if I remember correctly)
MareNostrum5 supercomputer - server cabinets, cooling nodes, all arranged in rows and columns.
Super Large watercooling pipes and pumps. Colour coded, red probably means hot, green is the intake. Doesn't need "cool" water - just need a small differential to pull heat - so I think the loop is actually pretty hot (a little lower than cpu temp)
Best damn wiring job I've ever seen. Puts my server room in Toronto to shame. Mare Nostrum 5 supercomputer, 14th on the Top500 2025 list #marenostrum5 #barcelonasupercomputingcenter https://www.bsc.es/marenostrum/marenostrum-5