Kay is ICHEC's primary supercomputer and Ireland's national supercomputer for academic researchers. Information about how to access Kay and HPC resources under the National Service can be found here.

Aug. 2018
Installation Date
665 TFlop/s
Linpack Performance


Kay (kay.ichec.ie) is comprised of a number of components:

  • "Cluster" -  A cluster of 336 nodes where each node has 2 x 20 core 2.4 GHz Intel Xeon Gold 6148 (Skylake) processors, 192 GB of RAM, a 400GiB local SSD for scratch space and a 100Gbit OmniPath network adaptor. This gives a total of 13,440 cores and 64TB of distributed memory.
  • "GPU" - A partition of 16 nodes with the same specification as above but with 2 Nvidia V100 GPUs.
  • "Phi" - A partition of 16 Intel manycore Xeon Phi nodes. These are the self hosted KNL model (7210) with 64 core processors @ 1.3GHz, 192GB RAM and a 400GiB local SSD for scratch space.
  • "High Memory" - A set of 6 nodes each containing 1.5TB of RAM plus 2 x 20 core 2.4 GHz Intel Xeon Gold 6148 (Skylake) processors and 1 TiB of dedicated local SSD for scratch storage.
  • "Service & Storage" - A set of service and administrative nodes to provide user login, batch scheduling, management, networking, etc. Storage is provided via Lustre filesystems on a high-performance DDN SFA14k system with 1 PiB of capacity.

A wide range of new research and development (R&D) is enabled on Kay. These include increased resolution in weather and climate forecasting, larger and longer simulations for research in areas such as medical device development, nanotechnology, genomics, drug design, etc. The machine is also capable of running heterogeneous workflows that require large compute power and large amounts of memory either during the pre- or post-processing phases of researchers work. Detailed list of the software available can be found here.


Scheduling Policy

Queue Node Type Max nodes per Job Max Walltime
DevQ Cluster 4 1 hour
ProdQ Cluster 40 72 hours
LongQ Cluster 1 144 hours
GpuQ GPU 4 48 hours
PhiQ Phi 16 24 hours
ShmemQ Large Mem 1 72 hours