Key

Key was one of the first systems at PDC to contain GPUs. Although the system mainly consisted of CPUs, it also had two GPUs initially. They were removed later as they caused problems with the kernel. Key was a system with a large amount of memory at the time it was installed: 1,054,252,916 kB. It comprised 32 core Intel Xeon E7- 4830 CPUs, with a speed of 2.13 GHz. It had 4 sockets, with 8 cores per socket, so it looked like 64 cores to the operating system thanks to hyperthreading.

The system was named after the Swedish author Ellen Key  and began operating at PDC in 2011.

Key was intended for large memory runs and visualisation calculations (particularly parallel visualisation using Visit or ParaView for large data sets). It was also used as a pre-/post-processing for the Lindgren system until utility nodes were acquired for Lindgren.