Broadband Validation Events

Overview

The Broadband Platform 11.2.2 provides three primary codebases for seismogram synthesis:

• URS
• UCSB
• UDSU

Three validation events are provided in the Broadband Platform:

• Northridge
• Landers
• Loma Prieta

Each of these events will be tested for each codebase. Although the platform allows codebases to be mixed and matched for low-frequency seismogram synthesis, high-frequency seismogram synthesis, and site response, validation events will be simulated with only a single codebase for now. Thus, there are nine unique simulation possibilities:

• Northridge with URS
• Northridge with UCSB
• Northridge with SDSU
• Landers with URS
• Landers with UCSB
• Landers with SDSU
• Loma Prieta with URS
• Loma Prieta with UCSB
• Loma Prieta with SDSU

These nine simulations will be run on both broadband.usc.edu and USC HPCC, and the results will be compared for accuracy.

Run Commands

The validation simulations were run using the standard run_bbp_2G.py start script. The following lists the run commands used with each codebase:

URS Simulations:

/home/broadband-01/patrices/11.2.2/bbp_2g/comps/run_bbp_2G.py -o /home/broadband-01/patrices/study/validation/nr_options_urs.txt -l /home/broadband-01/patrices/11.2.2/bbp_2g/logs/nr_urs_validation.log
/home/broadband-01/patrices/11.2.2/bbp_2g/comps/run_bbp_2G.py -o /home/broadband-01/patrices/study/validation/lp_options_urs.txt -l /home/broadband-01/patrices/11.2.2/bbp_2g/logs/lp_urs_validation.log
/home/broadband-01/patrices/11.2.2/bbp_2g/comps/run_bbp_2G.py -o /home/broadband-01/patrices/study/validation/la_options_urs.txt -l /home/broadband-01/patrices/11.2.2/bbp_2g/logs/la_urs_validation.log

UCSB Simulations:

/home/broadband-01/patrices/11.2.2/bbp_2g/comps/run_bbp_2G.py -o /home/broadband-01/patrices/study/validation/nr_options_ucsb.txt -l /home/broadband-01/patrices/11.2.2/bbp_2g/logs/nr_ucsb_validation.log
/home/broadband-01/patrices/11.2.2/bbp_2g/comps/run_bbp_2G.py -o /home/broadband-01/patrices/study/validation/lp_options_ucsb.txt -l /home/broadband-01/patrices/11.2.2/bbp_2g/logs/lp_ucsb_validation.log
/home/broadband-01/patrices/11.2.2/bbp_2g/comps/run_bbp_2G.py -o /home/broadband-01/patrices/study/validation/la_options_ucsb.txt -l /home/broadband-01/patrices/11.2.2/bbp_2g/logs/la_ucsb_validation.log

SDSU Simulations:

/home/broadband-01/patrices/11.2.2/bbp_2g/comps/run_bbp_2G.py -o /home/broadband-01/patrices/study/validation/nr_options_sdsu.txt -l /home/broadband-01/patrices/11.2.2/bbp_2g/logs/nr_sdsu_validation.log
/home/broadband-01/patrices/11.2.2/bbp_2g/comps/run_bbp_2G.py -o /home/broadband-01/patrices/study/validation/lp_options_sdsu.txt -l /home/broadband-01/patrices/11.2.2/bbp_2g/logs/lp_sdsu_validation.log
/home/broadband-01/patrices/11.2.2/bbp_2g/comps/run_bbp_2G.py -o /home/broadband-01/patrices/study/validation/la_options_sdsu.txt -l /home/broadband-01/patrices/11.2.2/bbp_2g/logs/la_sdsu_validation.log

Where the option .txt files are provided here: http://earth.usc.edu/~patrices/downloads/bbp_validation_option_files.tar

broadband.usc.edu versus HPCC cluster

Broadband.usc.edu:

Codebase	Northridge	Landers	Loma Prieta
URS	Complete	Complete	Complete
UCSB	Complete	Complete Fixed (Python Exception 1)	Complete Fixed (Python Exception 2)
SDSU	Complete Fixed (Python Exception 5)	Complete Fixed (Python Exception 3)	Complete Fixed (Python Exception 4)

USC HPCC:

Codebase	Northridge	Landers	Loma Prieta
URS	Complete	Complete	Complete
UCSB	Complete	Complete Fixed (Python Exception 1)	Complete Fixed (Python Exception 2)
SDSU	Complete Fixed (Python Exception 5)	Complete Fixed (Python Exception 3)	Complete Fixed (Python Exception 4)

Match Broadband vs HPCC:

Codebase	Northridge	Landers	Lome Prieta
URS	Identical	Identical	Identical
UCSB	Differ (http://earth.usc.edu/~patrices/downloads/bbp_validation_ucsb_nr.tar.gz)	Differ (http://earth.usc.edu/~patrices/downloads/bbp_validation_ucsb_la.tar.gz)	Differ (http://earth.usc.edu/~patrices/downloads/bbp_validation_ucsb_lp.tar.gz)
SDSU	Differ (http://earth.usc.edu/~patrices/downloads/bbp_validation_sdsu_nr.tar.gz)	Differ (http://earth.usc.edu/~patrices/downloads/bbp_validation_sdsu_la.tar.gz)	Differ (http://earth.usc.edu/~patrices/downloads/bbp_validation_sdsu_lp.tar.gz)

Errors and Fixes

The tables above reference several python errors. The following table describes each error and the fix:

• [1] IOError: [Errno 2] No such file or directory: '/export/broadband-01/patrices/11.2.2/bbp_2g/tmpdata/4255795/luc.3comp'. Solution is to rename UCSB LA/LP Green's functions to correct names expected by the platform. For the UCSB Lander's Green's functions, create the symlink shown below and update the filename in Green_Bank.inf and GreenFar.in:

[patrices@broadband Landers]$ pwd
/home/broadband-01/patrices/11.2.2/bbp_2g_gf/ucsb/GreenBank/Landers
[patrices@broadband Landers]$ ls -l
total 2259816
-rw-r--r-- 1 patrices bband 2311766784 Oct 25  2011 Green1D.Landers
lrwxrwxrwx 1 patrices cme           15 Apr 26 11:00 Green_1d.soil -> Green1D.Landers
-rw-r--r-- 1 patrices bband       1325 Apr 26 11:05 Green_Bank.inf
-rw-r--r-- 1 patrices cme         1327 Apr 26 11:05 Green_Bank.inf.original
-rwxr-xr-x 1 patrices bband        455 Apr 26 11:06 GreenFar.in
-rwxr-xr-x 1 patrices cme          457 Apr 26 11:06 GreenFar.in.original

• [2] IOError: [Errno 2] No such file or directory: '/export/broadband-01/patrices/11.2.2/bbp_2g/tmpdata/4255790/lgpc.3comp'. Same solution as #1.
• [3] IOError: [Errno 2] No such file or directory: '/export/broadband-01/patrices/11.2.2/bbp_2g/indata/4255183/stations.dat'. Same solution as #5.
• [4] IOError: [Errno 2] No such file or directory: '/export/broadband-01/patrices/11.2.2/bbp_2g/indata/4255178/stations.dat' Same solution as #5.
• [5] IOError: [Errno 2] No such file or directory: '/export/broadband-01/patrices/11.2.2/bbp_2g/indata/4252651/stations_kappa.dat'. Solution is to add $BBP_INSTALL_GF/sdsu/Northridge/stations_kappa.dat to the stage-in file list for the HF module in run_bbp_2G.py. Specifically, add the following at run_bbp_2G.py:L279:

		elif codebase=="SDSU":
			hf_module.addStageFile(val_obj.getInput("SDSU", "stations"))