EuroHPC ‘s Joint Endeavor lately deployed Europe’s first pre-exascale supercomputer, LUMI, in Finland’s metropolis of Kajaani. The all-AMD construct ranks because the third quickest laptop in line with the Top500 rankings owing to its 550 Petaflops efficiency. It additionally claims the title of the world’s third-greenest supercomputer, because of the spectacular power effectivity of the Epyc CPUs and CDNA-based MI250X GPUs. In accordance with LUMI, reaching this efficiency with the world’s quickest laptops would require a 23 km-high pile of them – roughly 28 occasions as excessive because the world’s tallest constructing, Dubai’s Burj Khalifa.
LUMI was engineered to derive 100% of its power from renewable sources. It may be fed as much as 200 MW of power by means of hydropower, whereas the supercomputer’s waste warmth might be repurposed in the direction of the Kajaani district, whose atmospheric temperatures can attain -18 Cº in winter. It is a round power consumption topology and opens the doorways to actually environmentally-conscious, carbon-negative supercomputing.
LUMI, the results of a 10-country consortium, goals to offer researchers in Europe and internationally with a scalable platform that may supercharge climate-forward computations, medical and synthetic intelligence analysis, and even quantum computing simulations. The underlying software program is powered by AMD’s ROCm software program stack, which stands in distinction to NVIDIA’s CUDA because of its open-source method. It additionally includes a translation mechanism that may adapt CUDA-based code to AMD’s software program stack with minimal software program engineering efforts.
LUMI’s structure includes a star-like topology, with eight partitioned nodes converging by means of Cray’s Slingshot high-speed interconnect (200 Gb/s). A kind of, LUMI-G, is solely GPU-accelerated, with a minimum of 10,240 AMD Intuition MI250X GPUs distributed all through 2,560 nodes (every node that includes 4 GPUs and a single, 64-core AMD Epyc 7763 “Trento” CPU), with 4 200 Gb/s hyperlinks between GPU nodes. Every AMD Intuition MI250X options 128 GB of HBM3 VRAM (3,2 TB/s bandwidth), and is rated at 42.2 TFLOP/s of efficiency in HPL benchmarks. All in all, AMD’s GPUs provide 432,128 TFLOP/s efficiency and over 1 TB of addressable VRAM.
The LUMI-C partion options CPU-based acceleration, deploying 1,536 dual-socket, 64-core AMD Trento CPUs (totaling 196,608 AMD Zen 3 cores). On the similar time, one other partition is devoted to in-process workloads, providing a complete of 32 TB of RAM that may match immense datasets. As for knowledge storage, LUMI adopted a hybrid topology: scorching knowledge is stored in an 8 PB (PetaByte) all-flash Lustre system. A complete of 80 PB of classical, HDD-based storage flows by means of Lustre. A cloud-enabled node is liable for conserving LUMI’s energy on the fingertips of any researcher internationally that options an web connection.
Plans for LUMI’s growth embrace LUMI-Q, a node totally devoted to the rising frontier of quantum computing. LUMI sees the long run as quantum-classical, constructing upon a hybrid HPC (Excessive-Efficiency Computing)+ QC (Quantum Computing) because the place the place real-world purposes will discover their quantum benefit. Whereas this node nonetheless hasn’t been regionally put in, LUMI has to this point been linked efficiently with two quantum computer systems: the Swedish Chalmers/Wallenberg Centre for Quantum Know-how QAL 900, and Finland’s first quantum laptop, the Helmi, operated by VTT.
Nonetheless, LUMI’s deployment has been affected by the continued semiconductor crush, and the system has been added to in phases all through this yr. The pilot launch of the system is anticipated in August 2022, with its supercomputing prowess opening up for common availability in September of this yr. The supercomputer’s footprint will take up virtually 400m2 – in regards to the dimension of two tennis courts. It additionally belongs to the heavyweight class, with round 150,000 kilograms (150 metric tons) of computing energy.
LUMI stands not solely as Europe’s crown jewel for supercomputing however can also be a badge-bearer for AMD’s more and more related HPC chops and climate-conscious architectures, and its design stands as a testomony to humanity’s collaborative ingenuity.