The geo-cluster is a set of fourty five compute nodes and two head nodes. All nodes are uniprocessor Pentium 4 machines interconnected with gigabit ethernet. The hardware specifications are listed below:

• 45 compute nodes
• Pentium 4 2.8GHz/512K/800MHz FSB.
  
• ASUS P4C800 Motherboard.
  
• 40GB Western Digital 5400RPM IDE HDD.
  
• 32MB ATI Rage Pro 128 4xAGP.
  
• 1GB DDR PC2300 ram per node.
  
• Redhat 9.0, Linux 2.4.21 OS.
  
• 30GB local scratch.
  
• Machine names:
  
geo-001, geo-002, geo-003, geo-004, geo-005, geo-006, geo-007, geo-008, geo-009, geo-010, geo-011, geo-012, geo-013, geo-014, geo-015, geo-016, geo-017, geo-018, geo-019, geo-020, geo-021, geo-022, geo-023, geo-024, geo-025, geo-026, geo-027, geo-028, geo-029, geo-030, geo-031, geo-032, geo-033, geo-034, geo-035, geo-036, geo-037, geo-038, geo-039, geo-040, geo-041, geo-042, geo-043, geo-044, geo-045.

• 2 head nodes
• Pentium 4 2.8GHz/512K/800MHz FSB.
  
• ASUS P4C800 Motherboard.
  
• 40GB Western Digital 5400RPM IDE HDD.
  
• 500GB Raid 0 storage.
  
• 32MB ATI Rage Pro 128 4xAGP.
  
• 1GB DDR PC2300 ram per node.
  
• Redhat 9.0, Linux 2.4.21 OS.
  
• Machine names:
  meinesz.mit.edu, vening.mit.edu

• Gigabit Switch
  
• HP Procurve 4108GL
• six port 100/1000BT gigE line cards (8x)