1. Biological and Environmental Sciences Climate Research, Life Sciences Vince Wayland

2. Contributions from: Brian HingertyLife Sciences

3. Climate Modeling

4. Current State One Year Requirements Two Year and Beyond Requirements

5. 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

6. Current CCSM3.0 IPCC Tuning, Seaborg Capabilities T85 Atmospheric Resolution Tot CPUs ATM cpusSyr/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.

7. One Year into Future Want to double resolution of ATM portion of CCSM3.0 (T85 to T170) Horizontal resolution only, not vertical >4 times atm computation –Gridpoints –Computation –Additional coupler load for interpolation and remapping in both directions to other components

8. One Year into Future, contd. >4 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)

9. 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

10. Two Years and Beyond,cont’d. 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?

11. Two Years and Beyond,cont’d. 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

12. Life Sciences

13. 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.

14. The End