This translation is older than the original page and might be outdated. See what has changed.

Translations of this page:

Writing /var/www/docs/data/log/error/2026-08-03.log failed

Error loading plugin include
ParseError: syntax error, unexpected 'include' (T_INCLUDE), expecting identifier (T_STRING) or '{'

KRAKEN - Hardware

KRAKEN cluster is composed of frontend node (access, queue control, job preparation, …)

It is prohibited to run computational tasks at the frontend node!

Processor:	AMD EPYC 7302P 16-Core Processor	_{16 cores, 3.0GHz, hyperthreading, 128MB cache}
Memory:	320GB	_{DDR4 3200 ECC}
Disk space:	2x 960GB	_{NVMe M.2 SSD}
Remote control:	IPMI	_KVM-o-E

and two computing parts (only the “M” part is accessible to all users):

Part M contains a total of 10 compute nodes (576 cores in total, 3.33TB RAM) built on three processor architectures:

1. Intel - broadwell, 6 nodes (kraken-m1, …, kraken-m6):

Motherboard:	SUPERMICRO X10DRW-ET	_{2x Intel Xeon processor E5-2600 v4, max. 2TB RAM, 2x 10 Gbit Ethernet, Remote controll}
Processors:	2x Intel(R) Xeon(R) CPU E5-2683 v4 @ 2.10-3.0GHz	_{16 cores, hyperthreading, 48MB cache}
Memory:	256GB per node	_{DDR4 2400MHz ECC reg.}
Disk storage:	4x 6TB SATA, 2x1TB SSD	_{TOSHIBA MG04ACA6, Micron_5100_MTFD}
Remote controll:	IPMI	_{IPMI 2.0 with virtual media over LAN and KVM-over-LAN support}

2. AMD - zen 2, 3 nodes (kraken-m7,…,kraken-m9), in operation from 10/2021:

Processors:	2x 2nd Gen AMD EPYC(TM) 7552	_{48 cores, 2.2-3.3GHz, 192MB cache (96 cores per node)}
Memory:	512GB per node	_{DDR4 3200MHz ECC}
Disk storage:	960GB per node	_{NVMe M.2 SSD}
Remote controll:	IPMI	_KVM-o-E

3. AMD - zen 4, 1 node (kraken-m10), in operation from 11/2023:

Part L contains 4 nodes (kraken-l1,…,kraken-l4):

Motherboard:	SUPERMICRO X10DRW-ET	_{2x Intel Xeon processor E5-2600 v4, max. 2TB RAM, 2x 10 Gbit Ethernet, Remote controll}
Processors:	2x Intel(R) Xeon(R) CPU E5-2637 v4 @ 3.50GHz	_{4 cores, hyperthreading, 16MB cache}
Memory:	256GB per node	_{DDR4 2400 ECC reg.}
Disks:	4x 6TB SATA, 2x1TB SSD	_{TOSHIBA MG04ACA6, Micron_5100_MTFD}
Remote controll:	IPMI	_{IPMI 2.0 with virtual media over LAN and KVM-over-LAN support}

Limit cluster performance based on server room temperature:

DRAIN mode limiting is first performed on machines that are about to run out of jobs.

DOWN mode is first performed on machines running jobs with lower “run time/declared run time” ratio.

During extended periods of high temperature problems, cluster is kept down in the following order of nodes