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Krypton was decommissioned as an SMHI system on April 2, 2015. SMHI research and development now uses Bi while the Krypton hardware has been reborn as the LiU-local Gamma cluster.
Krypton is operated for SMHI research and development. It follows in the footsteps of the earlier clusters Gimle and Dunder.
Krypton is equipped with fast interconnect network (Mellanox Infiniband FDR). Krypton has a combined peak performance of 61 Teraflop/sec, 3,840 compute cores, 9 Terabytes of memory, and 11 Terabit/s aggregated network performance.
The system is based on HP’s Cluster platform 3000 with SL230s Gen8 compute nodes, and was delivered in 2012 by GoVirtual AB.
| Hardware | HP Cluster Platform 3000 with SL230s Gen8 compute nodes |
| Processors | 8-core Intel Xeon E5-2660 “Sandy Bridge” processors at 2.2GHz |
| Number of compute nodes | 240 |
| Compute nodes (thin) | 2 sockets (16 cores) with 32 GB DDR3 1600 MHz memory (228 nodes) |
| Compute nodes (fat) | 2 sockets (16 cores) with 128 GB DDR3 1600 MHz memory (10 nodes) |
| Compute nodes (huge) | 2 sockets (16 cores) with 256 GB DDR3 1600 MHz memory (2 nodes) |
| Login node | 1 HP ProLiant DL380p Gen8 server, accessible using SSH |
| High speed interconnect | Mellanox Infiniband FDR high-speed interconnect (1 us PI latency, ~7 GB/sec MPI bandwidth) |
| Node scratch storage | 108 TB (420 GB per thin node, 840 GB per fat/huge node) |
| Global file system | /home and Accumulus |
| Operating system | CentOS Linux 6 |
| Batch queue system | Slurm |
The older Gimle cluster contained two generations of compute nodes (“Harpertown” and “Nehalem”). When Gimle was decommissioned in the spring of 2013, the newer Nehalem nodes were added as a partition in the Krypton cluster. So, in addition to the nodes listed above, there is also:
| Hardware | HP Cluster with DL170h G6 compute nodes |
| Processors | 4-core Intel Xeon E5520 “Nehalem” processors at 2.27GHz |
| Number of compute nodes | 128 |
| Compute nodes | 2 sockets (8 cores) with 24 GB DDR3 1333 MHz memory |
| Login node | See above. |
| High speed interconnect | Mellanox Infiniband DDR high-speed interconnect |
| Node scratch storage | 28 TB (220 GB per node) |
| Global file system | /home and Accumulus |
| Operating system | CentOS Linux 6 |
| Batch queue system | Slurm |
Krypton is used by the Research department at SMHI, primarily for applications in climate, meteorology and oceanography. In the climate area SMHI works together with European partners with the development, analysis and use of both global and regional climate models, and with impact studies in the fields of oceanography, hydrology and air quality.
Access to Krypton is granted by SMHI.
User Area
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National Supercomputer Centre
Linköping University
581 83 LINKÖPING
SWEDEN
Org.nr: 202100-3096
VAT.nr: SE202100309601
