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Key numbers about the Notur HW resources.
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Hardware
The university partners of the Notur consortium operate a number of High Performance Computing facilities. These pages list some characteristics of these facilities.
Main characteristics
Each of the facilities consists of a compute resource (processors/CPUs, memory, and processor/node interconnect), a storage resource and a secondary storage (tape) resource. All facilities use variants of the UNIX operating system (Linux, AIX, etc.) Click on the name of the facility in the table below to get further information for that facility.
| System | Type | # Nodes | # core's | CPU type | Theoretical total peak | Total memory | Total disk capacity | |
| Hexagon | Cray XT4 | MPP1 |
1 388 |
5 552 |
Opteron | 51 700 Gflop | 6 064 GB | 288 TB |
| Njord | IBM p575+ | distributed SMP | 62 | 992 | Power5+ | 7 500 Gflop | 1 984 GB | 70 TB |
| Snowstorm | HP rx4640 | cluster | 100 | 400 | Itanium2 | 2 208 Gflop | 580 GB | 34 TB |
| Stallo |
HP BL 460c | cluster |
704 |
5 632 | Xeon 2 |
60 000 Gflop | 12 064 GB | 128 TB |
| Titan |
Dell 1425 Sun X2200 |
cluster |
180 448 |
360 1 872 |
Xeon Opteron |
2 304 Gflop 9 539 Gflop |
720 GB 7 620 GB |
28 TB + 12 TB GPFS 336 TB + 120 TB GPFS |
1) MPP = Masssively Parallel Processor
NOTE: Snowstorm will be taken out of the Notur system on April 1st, 2008.
Suitability
The table below attempts to compare the machines with respect to the type of applications they are suited for. A 'yes' means that the machine in question is suitable for the type of jobs/applications. A 'no' means that the type of jobs on the machine is impossible or discouraged. A number in the table specifies the maximum number of processors that can be used (a physical limit or practical experience).
| Job type |
Hexagon |
Njord |
Snowstorm |
Stallo |
Titan |
| Parallel |
yes |
yes |
yes |
yes |
yes |
| Serial |
no |
no |
yes |
yes |
yes |
| Large Memory |
no |
yes |
no |
yes |
no |
| Large I/O jobs |
yes |
yes | no |
yes |
no |
| MPI applications |
2 776 |
ca 512 |
400 | 5 632 |
? |
| OpenMP applications |
2 |
16 | 4 | 8 |
4 |
In case these pages do not provide the information that you are looking for, contact the local support staff, especially if you consider to apply for access to a machine.
Miscellaneous
Machines that have been taken out of the Notur system are
- Magnum (September 30, 2007)
- tre (September 30, 2007)
-
fire (taken out March 31, 2007)
-
gridur/embla (taken out December 31, 2006)
-
snehvit (taken out September 30, 2006)
-
nana (taken out March 31, 2005)
