scec broadband platform capabilities and plans
DESCRIPTION
SCEC Broadband Platform Capabilities and Plans. Philip Maechling Information Technology Architect Southern California Earthquake Center (SCEC) 28 January 2008. Running a Simple BBP Example. Purpose: Calculate 10Hz seismograms (and spectral amplitudes) using a combinations of codes. - PowerPoint PPT PresentationTRANSCRIPT
SCEC: An NSF + USGS Research Center
SCEC Broadband Platform Capabilities and Plans
Philip MaechlingInformation Technology ArchitectSouthern California Earthquake Center (SCEC)28 January 2008
Running a Simple BBP ExamplePurpose:
– Calculate 10Hz seismograms (and spectral amplitudes) using a combinations of codes.
Combine Results of Available Codes:– Rupture Generators – URS and UCSB– Low Frequency Codes – URS and UCSB
• All codes use 1D velocity models for low frequency calculations.
– High Freq Codes – URS and UCSB and SDSU/ETH
Broadband Platform Workflow
Amps
Greens Functions
RuptureGenerator
Low FreqSim
High FreqSim
RuptureConfig
RuptureVariation
Seismograms Seismograms
SpectralAmplitudes
Running a Simple BBP Example• Select the collection of codes you would like to run
and type in the number of that set of codes.Number Rupture Model
GeneratorLow Frequency Seismogram
High Frequency Seismograms
1 URS URS URS
2 URS UCSB UCSB
3 URS URS SDSU
4 UCSB UCSB UCSB
5 UCSB URS URS
6 UCSB URS SDSU
Input a Rupture Description
Input a Station Location File
Input a Station 1D Velocity Model
Running a Simple BBP Example• Login into the SCEC computer (intensity.usc.edu)
– User account: bband– Pwd: TBD
• Move to the configuration directory– Type “start”
• This is an alias that will move you to the configuration directory
• Review the three input files:– Eq.src – Earthquake Source Description– Stations.ll – Station Locations in Lat/lon (decimal degrees)– BB01-01.vld – velocity model
• Run the platform by typing:– Type “run_bbp.py”
• This is the name of the top level BB Platform script
BB Platform Directory Structure
• Every simulation is assigned a “simulation id”– This is basically a timestamp (epoch seconds)
• Will wrap in about 3 months– Information about a simulation is keyed to this number
• Input, tmp, and output directories are created for a simulation and the files related to the simulation are stored in these directories
• The user should only need to look at the “data” directory, the output directory that contains the broadband seismograms and the metadata file.
BB Platform Directory Structure
• To help keep track of how seismograms were created, a “metadata.txt” file is created for each simulation.
• This lists the programs and the parameters used to create the seismograms.
BB Metadata File Structure
Broadband Platform “Hanging Wall” Exercise
Broadband Platform Seismograms
Broadband Platform Station SA Amplitudes
BB Platform Directory StructurePlatform is designed by creating “components” that
can be interchanged.A component is a python script that wraps all the
executables and scripts needed to do that processing.
RuptureGenerator
Low FreqSim
High FreqSim
RuptureConfig
RuptureVariation
Seismograms Seismograms
SpectralAmplitudes
BB Platform Directory Structure
Next Steps:• Distribute programs so that we can run on
supercomputers.• Add new components by creating new components
using new codes• Integrate capability to run 3D low frequency
simulations• Integrate capability to just run HF part to add HF
to low frequency seismograms.
End