Hardware
Contents:
1. Short hardware news
2. Current hardware: main characteristics
3. Technical support
4. Current hardware: system load
5. Decommissioned hardware
1. Short hardware news
- 06/08: The processors in titan were upgraded from dual-core to quad-core (2.2 Ghz). Also the InfiniBand interconnect was installed. The Notur part of the system is now in its final configuration (2432 cores).
- 06/08: The processors in hexagon were upgraded from 2.1 Ghz to 2.3 Ghz. The system is now in its final (hardware) configuration.
- 04/08: The processors in hexagon were upgraded from dual-core to quad-core. The system has now 5552 cores operating at 2.1 Ghz.
- 04/08: The HP Itanium2 cluster snowstorm was taken out of the Notur system on March 31, 2008.
- 03/08: Three large memory nodes were added to titan in March. The nodes are 8-cpu Sun X4600 nodes with 128, 128 and 256 GB memory. Initially, the nodes will have dual-core processors that will be replaced by quad-core processors once these are available (estimated May).
- 02/08: Three IBM p575+ nodes with 128 GB memory were added to njord.
- 02/08: The Cray XT4 hexagon is available for national usage since February 1. It comes initially with dual-core processors.
- 01/08: The HP cluster stallo is available for national usage since January 1, 2008.
2. Current hardware: main characteristics
The university partners of the Notur consortium operate a number of High Performance Computing facilities. This section lists some characteristics of these facilities.
Each of the facilities consists of a compute resource (a number of compute nodes each with a number of processors and internal shared-memory, plus an interconnect that connects the nodes), a central storage resource that is accessible by all the nodes, and a secondary storage resource for back-up (and in few cases also for archiving). 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 |
Number of nodes |
Number of cores |
CPU type |
Theoretical total peak |
Total memory |
Total disk capacity |
| hexagon |
Cray XT4 |
MPP |
1388 |
5552 |
Opteron |
51 Tflop |
6064 GB |
288 TB |
| njord |
IBM p575+ |
distributed SMP |
65 |
944 |
Power5+ |
7.2 Tflop |
2272 GB |
120 TB |
| stallo |
HP BL 460c |
cluster |
704 |
5632 |
Xeon 2 |
60 Tflop |
12064 GB |
128 TB |
| titan |
Sun X2200 |
cluster |
304 |
2432 |
Xeon/Opteron |
21.5 Tflop |
- GB |
- GB |
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 |
stallo |
titan |
| Parallel jobs |
yes |
yes |
yes |
yes |
| Serial jobs |
no |
no |
yes |
yes |
| Large I/O jobs |
yes |
yes |
yes |
yes |
| Memory per node |
4-8 GB |
13 GB |
16-32 GB |
16 GB |
| MPI applications |
> 256 |
> 256 |
> 256 |
> 256 |
| OpenMP applications |
4 |
16 |
8 |
8 |
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.
3. Technical support
On the support pages you find more information on how to contact the support staff and where to find the technical support pages for the facilities in the Notur project.
4. Current hardware: system load
A separate page gathers the live status (load) for each of the Notur facilities.
5. Decommissioned hardware
- The HP Itanium2 cluster snowstorm was taken out of Notur on March 31, 2008
- The HP SuperDome magnum was taken out of Notur on December 31, 2007
- The IBM p690 tre was taken out of Notur on September 30, 2007
- The IBM 1300 cluster fire was taken out of Notur on March 31, 2007
- The SGI 3800 gridur/embla was taken out of Notur on December 31, 2006
- The SGI Altix snehvit was taken out of Notur on September 30, 2006
- The HP SuperDome nana was taken out of Notur on March 31, 2005.
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