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NCSA IA-32 Linux Cluster Technical Summary

[platinum.ncsa.uiuc.edu]

COMPONENT DESCRIPTION
Hardware & Networking Architecture Linux Cluster
System
  • IBM eServer x330 thin server
  • dual-processor
  • ECC SDRAM memory
    • Compute Nodes: 1.5 GB
    • Access & Storage Nodes: 2 GB
Number of systems
Access Nodes: 4 (8 processors)
Compute Nodes: 484 (968 processors)
Storage Nodes: 32 (64 processors)[*]
[*] only 4 are currently used as storage nodes;
the rest are used as compute nodes
Processor
  • Intel Pentium III 1GHz
  • 256 KB full-speed L2 cache
  • Peak performance 1 Gflop
Network Interconnect
Access Nodes: Gigabit Ethernet
100 Mbit Ethernet
Compute Nodes: Myrinet 2000
100 Mbit Ethernet
Storage Nodes: Myrinet 2000
Gigabit Ethernet
Scratch Disk
Node local: 10 GB
Shared: 4 NFS mounted filesystems
each 650 GB
Software Operating System Linux 2.4.9 (RedHat 7.2)
(with large file support)
Compilers
  • Intel: Fortran77/90/95 C C++
  • PGI: Fortran77 Fortran90 C C++ HPF
  • GNU: Fortran77 C C++
Programming Model Message Passing Interface (MPI)
Program Analysis Tools Totalview, PGDBG debugger, PGPROF performance profiler
Floating point format IEEE
Batch System Portable Batch System (PBS) with
Maui Scheduler
Policies/User Limits Home directory disk quota 500 MB
Interactive scratch quota None currently
Maximum disk per job No limits currently
Charging Algorithm
  # SUs = 2 * #Nodes * Time
 
  where
  SUs  = Service Units
  Time = Total Wall Clock Hours
  



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