Available Resources

SPRACE Cluster

The SPRACE cluster is a T2 site of the CMS collaboration at the Worldwide LHC Computing Grid (WLCG) infrastructure.

General Summary

Production Time History

Upgrade Time History

SPRACE Current status

The SPRACE current status, after the FAPESP thematic phase VII upgrade and storage upgrade using RENAFAE fund, that was installed by the end of August 2019, is

• 29.7 KHS06 of Processing Ressources
• 2.3 PB of Disk Space
  • 1.9 PB Dedicated to CMS Production
  • 0.4 PB Group Space

Worker Nodes Summary

SPRACE has 144 worker nodes corresponding to 2688 computing cores. Those servers were bought at different times (phases), according to the evolution of the project, that started in 2004. Equipment of phase 1 were decommissioned in August 2010 because they are 32bit architecture and were no longer useful for CMS production. Equipments acquired in phase V were installed in the end of May 2012, corresponding to more 64 workernodes/768 cores, enhancing significantly the computing power and storage capacity of the cluster. Equipment of phases 2 and 3 were decommissioned by the end of 2015.

Storage Summary

SPRACE has a dCache based storage with 2.3 PiB of effective disk space, distributed in five Supermicro (360TB raw disk space) servers, and four SGI Summit + Infinite 2245 (540TB raw disk space) servers, one SGI Modular InfiniteStorage (432TB raw disk space), one Huawei OceanStor (1024TB raw disk space) and two servers Dell PowerEdge R730 + MD1280 (1008TB raw). Storages of phase IV were decommissioned in January 2019.

Head Nodes Summary

SPRACE has 5 head nodes, one for local users access (access), one for open sience grid compute element middleware (osg-ce), one for open sience grid storage element middleware (osg-se), and two for general tasks (spserv01 and spserv02).

Network Equipment Summary

SPRACE is connected to internet by a 10 + 10 Gbps link provided by ANSP. All head nodes and storage servers are connected by a 10Gbps to the internet. All worker nodes have a 1 Gbps conection to switches with 10 Gbps uplinks to the core switch.

Decommissioned Hardware

Some machines, bought at phase I of the project, were decommissioned because they were based on a 32 bits architecture. Other machines bought at phase II were also decommissioned because their hardware warranty has expired.

Processing hardware

Phase	Vendor	Model	Processor	Cores	RAM	# of nodes
III	Itautec	Infoserver LX211	2 x Intel Xeon Dual-Core 5130 @ 2.0 GHz	4	4GB	32
I	Itautec	Infoserver 1252	2 x Intel Xeon DP 2.4 GHz	2	1 GB	24
II	Itautec	Infoserver LX210	2 x Intel Xeon EMT64T @ 3.0 GHz	2	2GB	32

Storage hardware

WLCG pledges

U.S. CMS Facilities

• U.S. CMS Tier-2 Facilities Deployment Status

CMS T2 Associations and Allocations

• PAG/POG Allocations at Tier-2 Sites

WLCG pledges for 2013

According to the WLCG pledges for 2013, a nominal T2 site is

• 10.6 KHS06 of Processing Ressources
• 787TB of Disk Space

WLCG pledges for 2012

According to the WLCG pledges for 2012, a nominal T2 site is

• 9.5 KHS06 of Processing Ressources
• 787TB of Disk Space

According to the Service Credit in 2012, a nominal T2 site is

• 10.9 KHS06 of Processing Ressources
• 810TB of Disk Space
  • 30TB of Stage-Out Space
  • 250TB of Group Space (125TB per group)
  • 200TB of Central Space
  • 170TB of Local Space
  • 160TB of User Space (~40 Users of 4TB each).