proposal for a dedicated lhcb linux / pc batch facility at cern
DESCRIPTION
Proposal for a dedicated LHCb Linux / PC batch facility at CERN. Catherine Charbonnier Tony Cass CERN - IT/PDP. Why a Linux / PC facility?. LHCb use AIX services Current problems lack of C++ compiler that supports the latest language constructs AND - PowerPoint PPT PresentationTRANSCRIPT
June 3, 1999 LHCb Software Week 1
Proposal for a dedicated LHCb Linux / PC batch facility at CERN
Catherine Charbonnier
Tony Cass
CERN - IT/PDP
2LHCb Software WeekJune 3, 1999
Why a Linux / PC facility? LHCb use AIX services Current problems
– lack of C++ compiler that• supports the latest language constructs AND
• is compatible with CLHEP as provided by IT/ASD
– lack of support for AIX• GNU products
• ROOT
3LHCb Software WeekJune 3, 1999
Why a Linux / PC facility?
Growth of PC systems – at CERN – everywhere!
O.S. is Windows NT or Linux Linux could match very easily with LHCb
requirements– Set up a dedicated PC cluster running Linux
4LHCb Software WeekJune 3, 1999
The proposed platform
rsplus rsbatch
Now
Will be
lxtest shiftlhcb
Lhcb
Lhcb
5LHCb Software WeekJune 3, 1999
Details of the implementation
Hardware (see Fig.)– lxtest cluster = 3 Dual Pentium II PCs– shiftlhcb cluster = 4 Dual Pentium II
PCs, 450MHz per processor
800 CU = Twice the rsbatch allocation to LHCb (2,000,000CUh/year 4/32 nodes)
– Fast-Ethernet connections
6LHCb Software WeekJune 3, 1999
Details of the implementation
Software– CERN certified version of Linux
• RedHat 5.1 (will be upgraded to RedHat 6.0)• Kernel 2.2.6 (best kernel for SMP systems)• LSF batch system• AFS / SUE environment
– environment identical to rsbatch– g77/gcc instead of xlf/xlc
2x10GBUATA
2xPII@450MHz,128MB
2x10GBUATA
2xPII@450MHz,128MB
2x10GBUATA
2xPII@450MHz,128MB
2x10GBUATA
2xPII@450MHz,128MBHP Kayak XAs
3COM 3900 switch
shiftlhcb
3COM 3900 switch
2x10GBUATA
2xPII@450MHz,128MB
2x10GBUATA
2xPII@450MHz,128MB
2x2GBUATA
2xPII@300MHz,256MB
lxtest
Lhcb
CORE Ethernetnetwork
Site Ethernetnetwork shift18
475GBSCSI
8LHCb Software WeekJune 3, 1999
Future lxtest cluster is available:
– iss name lxtest • telnet• xdm
shiftlhcb cluster: – PCs ordered – should be available by end of July 1999.
Further expansion will be discussed during COCOTIME round.
9LHCb Software WeekJune 3, 1999
Please contact– IT/LHCb linkman
[email protected]– Service Manager for shiftlhcb cluster
[email protected]– Service Manager for lxtest cluster
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