Biological and Environmental Sciences

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Biological and Environmental Sciences

• Climate Research, Life Sciences
• Vince Wayland

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Contributions from

• Brian Hingerty Life Sciences

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Climate Modeling

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Climate Modeling

• Current State
• One Year Requirements
• Two Year and Beyond Requirements

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Current State

• On going PCM runs, 4 cases concurrently, either
  64 or 32 cpus
• 5 100 year CCSM 3.0 IPCC runs in progress, or
  starting REAL SOON NOW
• Continuing additional CCSM3.0 runs

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Current CCSM3.0 IPCC Tuning, Seaborg Capabilities

• T85 Atmospheric Resolution
• Tot CPUs ATM cpus Syr/day Syr/cpu
• 112 80 0.97 .0084
• 128 80 1.11 .0087
• 208 160 1.57 .0076
• 608 512 2.57 .0043
• Data courtesy G.W. Carr, Jr.

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One Year into Future

• Want to double resolution of ATM portion of
  CCSM3.0 (T85 to T170)
• Horizontal resolution only, not vertical
• gt4 times atm computation
• Gridpoints
• Computation
• Additional coupler load for interpolation and
  remapping in both directions to other components

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One Year into Future, contd.

• gt4 times data transmission, storage, and post
  processing and Grid utilization
• Looking at 320 ATM cpus, and 384(?) total, just
  to keep current simulation rate
• Possible increases in ATM code efficiency
• Separate physics and dynamics time steps
• Reduced grid (fewer polar points)

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Two years and beyond

• Would like to quadruple CCSM3.0 ATM resolution to
  T340
• WHY????
• Desire to study regional climate
• There are small-scale phenomena that affect
  regional climate that can only be represented by
  this resolution

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Two Years and Beyond,contd.

• But, use current model for estimation purposes
• Even though possible with current ATM, probably
  will require different model including previous
  optimizations and (probably) new dynamical core.
  FV?

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Two Years and Beyond,contd.

• Therefore, need 20 (4.5 x 4.5) times current
  performance for similar number of cpus or trade
  offs using more cpus
• AND, additionally, similar bump in
• Data Pipes (width and transfer rate)
• Storage Capacity
• Interconnects/switches

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Life Sciences

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Life Sciences

• Brian provided a very nice set of science slides
  for cancer research using the DUPLEX Molecular
  Mechanics Program, but no quantitative computing
  resource requirements.
• Can display on request, if time allows.
• My bad for not having requested quantitative data
  in time.

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The End