Kappa was decommissioned on June 12th, 2015 and replaced by the Gamma cluster.
Kappa is a Linux-based cluster with 366 compute nodes and a combined peak performance of 27 TFLOPS.
Each compute node (HP DL170h) is equipped with two quad-core processors of type Intel® Xeon® E5520 and 24 or 72 GB RAM.
Each of the two "huge" nodes (HP DL980) has 1024 GB RAM and eight processors of CPU type Intel® Xeon® E7-2800 which have eight cores each, giving 64 cores in total.
|Hardware||HP Cluster Platform with DL170h G6 compute nodes|
|Processors||4-core Intel Xeon E5520 processors at 2.2GHz|
|Number of compute nodes||366|
|Compute node (thin)||2 sockets (8 cores) with 24 GB memory (192 nodes)|
|Compute node (fat)||2 sockets (8 cores) with 72 GB memory (72 nodes)|
|Compute node (huge)||8 sockets (64 cores) with 1024 GB memory (2 nodes)|
|Login nodes||One HP ProLiant DL180 G6 server, accessible using SSH|
|High speed interconnect||Infiniband QDR high-speed interconnect|
|Node scratch storage||90 TB (250 GB per node)|
|Global file system||Kappa uses NSC's Centre Storage system|
|Operating system||CentOS Linux 5|
|Batch queue system||Slurm|
Kappa is open for users within Linköping University.
Access to Kappa is granted by NSC. Local researchers at Linköping university can apply for computing time on Kappa. See applying for a new project for details.