Agenda

• Budget and Production cluster
  • Has USNO received the most recent invoices
  • Correlator fully functional
• Schedule
  • On schedule
  • Wrap up documentation throughout August
  • Should we target 2nd week of September for delivery ? yes
• Benchmark update
• Last meeting items
  • NRAO to send router rule requirements DONE
  • NRAO to order QSFP to SFP (40gbit to 4x10gbit) 15m cables DONE
  • NRAO to confirm 3 x 20amp 240V PDUs will be sufficient It won't be
  • NRAO to send complete IP/hostname DNS mapping
  • Phase II discussion, decision probably delayed till Q2 or later FY13.
    • Need to consider obligating money by March 2013
    • Remaining negotiations over the coming months

Discussion

• Delivery may need to be delayed until later in September
• Benchmarks
  • 3 to 15 station at 2gbit with single vs full polarization plot shows 15 station full polarization runtime at 85% observe time
  • NRAO to do testing with Mark5
• Power and cooling
  • Full correlator tests show three 20amp 240v PDUs won't be sufficient. Total draw is around 65 amps. Two options
    • Add 4th PDU
    • Move to 30amp 208v PDUs which would require rewiring at USNO
  • Higher power consumption of 2.9GHz processors means 3.8 tons cooling not 2.5 tons.
• Networking
  • Any new news or updates regarding local IT input ? Direct contact with them would be good.
  • Need IP address for USNO DNS, NTP, SMTP servers
• Various minor issues documented here: https://safe.nrao.edu/wiki/bin/view/HPC/UsnoErrataIssues
  • One bad compute node (glitchy network interface), replaced from test cluster
  • Few minor glitches that need ironing out (rebooting nodes, etc0