[HPCWire] The new Cray CS-Storm, which offers up to 8 NVIDIA K40s per 2U server and a peak performance of 11 teraflops per Ivy Bridge-outfitted node, is set to push key applications that require more GPU scalability to new heights.
The system, which is based on the Cray CS300 super, is designed to keep the accelerators cool enough to operate at full speed. The 48U standard rack can accommodate 22 of the 2U nodes, which means that with 2 Ivy Bridges and the GPUs, users are looking at around 250 teraflops per rack or a petaflop of performance for a 4-cabinet purchase. Cray’s Barry Bolding told us that the company will release more information on future Intel generations for the host processor.
It’s not just about adding GPUs into the dense mix with this system, however. Cray has tuned the GPU workloads they’re targeting for maximum bandwidth and accelerator performance on the cooling and data movement fronts with a couple of notable features.
While these are air-cooled systems, as the graphic below shows, the emphasis is on cooling through front to back airflow to keep the GPUs humming without overheating or without having to run them at reduced wattage. In addition to airflow, this allows for expandability options since it will be possible to add future generations of accelerators into the box while still allowing the desired density and the ability to cool all 8 of the GPUs at the same time.
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