Last Update:4th Jul 2016 at 14:24


High-performance computing (HPC) facilities

Last updated: 4th Jul 2016
List of the computing ressources available for the CP3 members.

Resources in CP3


  • CMS/LHC Tier 2 - Ingrid
    Connected to the WLCG Grid
    • 1384 cores: (14x2x4 - 2.33 GHz 16GB RAM / node) + (29x2x4 - 2.5 GHz 16GB RAM / node) + (29x2x8 - 2.3 GHz 32GB RAM / node) + (3x2x16 - 2.6 GHz 64GB RAM / node) + (10x2x24 - 2.4 GHz 128GB RAM / node)
    • Mass storage: 800 TB (disks)
    • Access and other info
    • Sister cluster at IIHE (ULB-VUB)
  • Cosmo cluster
    • 296 threads: 13x2x4 AMD Opteron 16GB RAM / node + 4x2x8 AMD Opteron 32GB RAM / node + 4x2x8x2 Intel Xeon E5 64GB RAM / node
    • Storage: 25 TB (parallel fhgfs) multiplexed over stripped Gbit ethernet across the nodes
    • Access and detailed specifications
  • Madgraph cluster
    • 536 cores: (31x2x8 - 2.3 GHz 32GB RAM / node) + (5x2x16 - 2.6 GHz 64GB RAM / node)
    • Online interface
    • Sister clusters at UIUC (USA) and Roma2 Tor Vergata
  • NA62 cluster
    • 432 cores: (6x2x8 - 2.3 GHz 64GB RAM / node) + (7x2x24 - 2.4 GHz 128GB RAM / node)
    • Mass storage: 346 TB.

Total HEP-SPEC06 score by machine type


CPU HEP-SPEC06 Clock speed (GHz) L2+L3 cache size (grand total, KB) Cores (runs) Memory (GB) Mainboard type Site WN
Intel Xeon 5160 44.2 3.0 8192+0 4 8 (8 modules) Dell PowerEdge 1950 BelGrid-UCL wn10
Intel Xeon E5420 70.4 2.5 24576+0 8 16 (4 modules) HP ProLiant BL2x220c G5 BelGrid-UCL wn70
AMD Opteron 6134 147 2.3 8192+20480 16 32 (8 modules) HP ProLiant DL165 G7 BelGrid-UCL wn140
Intel Xeon E5-2670 336 2.6 4096+40960 32 (with HT) 64 (8 modules) HP ProLiant DL160 Gen8 BelGrid-UCL wn160
Intel Xeon E5-2695v2 437 2.4 6144+61440 48 (with HT) 128 (8 modules) HP ProLiant DL360p Gen8 BelGrid-UCL wn165
AMD Opteron 2218 34.6 2.6 4096+0 4 8 (8 modules) Dell PowerEdge SC1435 BelGrid-UCL mg05
AMD Opteron 2380 75.0 2.5 4096+12288 8 16 (8 modules) Dell PowerEdge SC1435 BelGrid-UCL mg10
Intel Xeon E5345 63.9 2.33 16384+0 8 16 (4 modules) Supermicro X7DBT BelGrid-UCL wn30

Average HEP-SPEC06 score per core for all Working Nodes on each cluster


CMS cluster:

    Xeon E5345@2.33GHz, 8 cores - 63.9 x 14 WNs
    Xeon L5420@2.5GHz, 8 cores - 70.4 x 29 WNs 
    Opteron 6134@2.3GHz, 16 cores - 147 x 29 WNs 
    Xeon E5-2670@2.6GHz, 32 cores - 336 x 3 WNs
    Xeon E5-2695@2.4GHz, 48 cores - 437 x 10 WNs

(63.9*14 + 70.4*29 + 147*29 + 336*3 + 437*10)/(8*14 + 8*29 + 16*29 + 32*3 + 48*10) = 9.1 average per core HEP-SPEC06

MadGraph cluster:

    Opteron 2380@2.5GHz, 8 cores - 75.0 x 5 WNs
    Opteron 6134@2.3GHz, 16 cores - 147 x 31 WNs 

(75.0*5 + 147*31)/(8*5 + 16*31) = 9.2 average per core HEP-SPEC06

Resources at UCLouvain


CP3 members have also access to the UCLouvain's clusters managed by the CISM.
  • HMEM cluster
    • 3.7TB of RAM distributed across 12 nodes of 48 cores each (including 2 machines with 512GB RAM)
    • Interconnected through Infiniband
  • Green cluster
    • 952 cores: 119x2x4 Xeon 2.5 GHz 16 and 32 GB RAM / node
    • Mass storage: 11 TB
  • Lemaître cluster
    • 128x2x1 AMD Opteron 2.56GHz 4GB RAM /node, Infiniband interconnection
    • 12x2x4 Xeon Nehalem 2.27 GHz 24 GB RAM / node, Infiniband interconnection
    • several 32, 64 and 128 GB RAM machines
  • BeGrid
    • Currently, more than 1000 cores distributed over several belgian universities
Other clusters (eg: GPU) and detailed resources listing is available on the CISM page. Access.

External resources

UCLouvain members have access to
  • the clusters funded by the CECI across the universities of the Communauté française de Belgique
CMS collaborators have access to the
  • WLCG grid distributed across more than 140 computer centres. For CMS:
    • 25 000 cores
    • 25 000TB of disk storage and 35 000 TB of tape storage


[UCLouvain] - [SST] [IRMP] - [SC]
Contact : Jérôme de Favereau
Job opportunities PhD Position in Theoretical Particle Physics and Cosmology