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Anselm is cluster of x86-64 Intel based nodes built on Bull Extreme Computing bullx technology. The cluster contains four types of compute nodes.
- 180 nodes
- 2880 cores in total
- two Intel Sandy Bridge E5-2665, 8-core, 2.4GHz processors per node
- 64 GB of physical memory per node
- one 500GB SATA 2,5” 7,2 krpm HDD per node
- bullx B510 blade servers
- cn[1-180]
- 23 nodes
- 368 cores in total
- two Intel Sandy Bridge E5-2470, 8-core, 2.3GHz processors per node
- 96 GB of physical memory per node
- one 500GB SATA 2,5” 7,2 krpm HDD per node
- GPU accelerator 1x NVIDIA Tesla Kepler K20 per node
- bullx B515 blade servers
- cn[181-203]
- 4 nodes
- 64 cores in total
- two Intel Sandy Bridge E5-2470, 8-core, 2.3GHz processors per node
- 96 GB of physical memory per node
- one 500GB SATA 2,5” 7,2 krpm HDD per node
- MIC accelerator 1x Intel Phi 5110P per node
- bullx B515 blade servers
- cn[204-207]
- 2 nodes
- 32 cores in total
- 2 Intel Sandy Bridge E5-2665, 8-core, 2.4GHz processors per node
- 512 GB of physical memory per node
- two 300GB SAS 3,5”15krpm HDD (RAID1) per node
- two 100GB SLC SSD per node
- bullx R423-E3 servers
- cn[208-209]
**Figure Anselm bullx B510 servers**
### Compute Nodes Summary
| Node type | Count | Range | Memory | Cores | [Access](resources-allocation-policy/) |
| -------------------------- | ----- | ----------- | ------ | ----------- | -------------------------------------- |
| Nodes without accelerator | 180 | cn[1-180] | 64GB | 16 @ 2.4Ghz | qexp, qprod, qlong, qfree |
| Nodes with GPU accelerator | 23 | cn[181-203] | 96GB | 16 @ 2.3Ghz | qgpu, qprod |
| Nodes with MIC accelerator | 4 | cn[204-207] | 96GB | 16 @ 2.3GHz | qmic, qprod |
| Fat compute nodes | 2 | cn[208-209] | 512GB | 16 @ 2.4GHz | qfat, qprod |
Anselm is equipped with Intel Sandy Bridge processors Intel Xeon E5-2665 (nodes without accelerator and fat nodes) and Intel Xeon E5-2470 (nodes with accelerator). Processors support Advanced Vector Extensions (AVX) 256-bit instruction set.
- eight-core
- speed: 2.4 GHz, up to 3.1 GHz using Turbo Boost Technology
- peak performance: 19.2 GFLOP/s per core
- caches:
- L2: 256 KB per core
- L3: 20 MB per processor
- memory bandwidth at the level of the processor: 51.2 GB/s
- eight-core
- speed: 2.3 GHz, up to 3.1 GHz using Turbo Boost Technology
- peak performance: 18.4 GFLOP/s per core
- caches:
- L2: 256 KB per core
- L3: 20 MB per processor
- memory bandwidth at the level of the processor: 38.4 GB/s
Nodes equipped with Intel Xeon E5-2665 CPU have set PBS resource attribute cpu_freq = 24, nodes equipped with Intel Xeon E5-2470 CPU have set PBS resource attribute cpu_freq = 23.
$ qsub -A OPEN-0-0 -q qprod -l select=4:ncpus=16:cpu_freq=24 -I
In this example, we allocate 4 nodes, 16 cores at 2.4GHhz per node.
Intel Turbo Boost Technology is used by default, you can disable it for all nodes of job by using resource attribute cpu_turbo_boost.
$ qsub -A OPEN-0-0 -q qprod -l select=4:ncpus=16 -l cpu_turbo_boost=0 -I
- 2 sockets
- Memory Controllers are integrated into processors.
- 8 DDR3 DIMMs per node
- 4 DDR3 DIMMs per CPU
- 1 DDR3 DIMMs per channel
- Data rate support: up to 1600MT/s
- Populated memory: 8 x 8 GB DDR3 DIMM 1600 MHz
- 2 sockets
- Memory Controllers are integrated into processors.
- 6 DDR3 DIMMs per node
- 3 DDR3 DIMMs per CPU
- 1 DDR3 DIMMs per channel
- Data rate support: up to 1600MT/s
- Populated memory: 6 x 16 GB DDR3 DIMM 1600 MHz
- 2 sockets
- Memory Controllers are integrated into processors.
- 16 DDR3 DIMMs per node
- 8 DDR3 DIMMs per CPU
- 2 DDR3 DIMMs per channel
- Data rate support: up to 1600MT/s
- Populated memory: 16 x 32 GB DDR3 DIMM 1600 MHz