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Compute Nodes
=============
Nodes Configuration
-------------------
Anselm is cluster of x86-64 Intel based nodes built on Bull Extreme
Computing bullx technology. The cluster contains four types of compute
nodes.
###Compute Nodes Without Accelerator
-
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]
###Compute Nodes With GPU Accelerator
-
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]
###Compute Nodes With MIC Accelerator
-
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]
###Fat Compute Nodes
-
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](resource-allocation-and-job-execution/resources-allocation-policy.html)|
|---|---|---|---|---|---|
|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|
Processor Architecture
----------------------
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.
### Intel Sandy Bridge E5-2665 Processor
- 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
### Intel Sandy Bridge E5-2470 Processor
- 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
Memory Architecture
-------------------
### Compute Node Without Accelerator
- 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: 8x 8GB DDR3 DIMM 1600Mhz
### Compute Node With GPU or MIC Accelerator
- 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: 6x 16GB DDR3 DIMM 1600Mhz
### Fat Compute Node
- 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: 16x 32GB DDR3 DIMM 1600Mhz