CyberShake Workflow Framework

This page provides documentation on the workflow framework that we use to execute CyberShake.

As of 2018, we use shock.usc.edu as our workflow submit host for CyberShake, but this setup could be replicated on any machine.

Overview

Overview of workflow framework

The workflow framework consists of three phases:

Create. In this phase, we use the Pegasus API to create an "abstract description" of the workflow, so named because it does not have the specific paths or runtime configuration information for any system. It is a general description of the tasks to execute in the workflow, the input and output files, and the dependencies between them. This description is called a DAX and is in XML format.
Plan. In this phase, we use the Pegasus planner to take our abstract description and convert it into a "concrete description" for execution on one or more specific computational resources. At this stage, paths to executables and specific configuration information, such as the correct certificate to use, what account to charge, etc. are added into the workflow. This description is called a DAG and consists of multiple files in a format expected by HTCondor.
Run. In this phase, we use Pegasus to hand our DAG off to HTCondor, which supervises the execution of the workflow. HTCondor maintains a queue of jobs. Jobs with all their dependencies satisfied are eligible to run and are sent to their execution system.

We will go into each phase in more detail below.

Software Dependencies

Before attempting to create and execute a workflow, the following software dependencies must be satisfied.

Workflow Submit Host

In addition to Java 1.7+, we require the following software packages on the workflow submission host:

Pegasus-WMS

Purpose: We use Pegasus to create our workflow description and plan it for execution with HTCondor. Pegasus also provides a number of other features, such as automatically adding transfer jobs, wrapping jobs in kickstart for runtime statistics, using monitord to populate a database with metrics, and registering output files in a catalog.

How to obtain: You can download the latest version (binaries) from https://pegasus.isi.edu/downloads/, or clone the git repository at https://github.com/pegasus-isi/pegasus . Usually we clone the repo, as with some regularity we need new features implemented and tested. We are currently running 4.7.3dev on shock, but you should install the latest version.

Special installation instructions: Follow the instructions to build from source - it's straightforward. On shock, we install Pegasus into /opt/pegasus, and update the default link to point to our preferred version.

HTCondor

Purpose: HTCondor performs the actual execution of the workflow. Part of Condor, DAGMan, maintains a queue and keeps track of job dependencies, submitting jobs to the appropriate resource when it's time for them to run.

How to obtain: HTCondor is available at https://research.cs.wisc.edu/htcondor/downloads/, but installing from a repo is the preferred approach. We are currently running 8.4.8 on shock. You should install the 'Current Stable Release'.

Special installation instructions: We've been asking the system administrator to install it in shared space.

HTCondor has some configuration information which must be setup correctly. On shock, the two configuration files are stored at /etc/condor/condor_config and /etc/condor/condor_config.local.

In condor_config, make the following changes:

LOCAL_CONFIG_FILE = /path/to/condor_config.local
ALLOW_READ = *
ALLOW_WRITE should be set to IPs or hostnames of systems which are allowed to add nodes to the Condor pool. For example, on shock it is currently ALLOW_WRITE = *.ccs.ornl.gov, *.usc.edu
CONDOR_IDS = uid.gid of 'Condor' user
All the MAX_*_LOG entries should be set to something fairly large. On shock we use 100000000.
DAEMON_LIST = MASTER, SCHEDD, COLLECTOR, NEGOTIATOR
HIGHPORT and LOWPORT should be set to define the port range Condor is allowed to use
DELEGATE_JOB_GSI_CREDENTIALS=False ; when set to True, Condor sometimes picked up the wrong proxy for file transfers.

In condor_config.local, make the following changes:

NETWORK_INTERFACE = <machine ip>
DAGMAN_MAX_SUBMITS_PER_INTERVAL = 80
DAGMAN_SUBMIT_DELAY = 1
DAGMAN_LOG_ON_NFS_IS_ERROR = False
START_LOCAL_UNIVERSE = TotalLocalJobsRunning<80
START_SCHEDULER_UNIVERSE = TotalSchedulerJobsRunning<200
JOB_START_COUNT = 50
JOB_START_DELAY = 1
MAX_PENDING_STARTD_CONTACTS = 80
SCHEDD_INTERVAL = 120
RESERVED_SWAP = 500
CONDOR_HOST = <workflow management host>
LOG_ON_NFS_IS_ERROR = False
DAEMON_LIST = $(DAEMON_LIST) STARTD
NUM_CPUS = 50
START = True
SUSPEND = False
CONTINUE = True
PREEMPT = False
KILL = False
REMOTE_GAHP = /path/to/rvgahp_client
GRIDMANAGER_MAX_SUBMITTED_JOBS_PER_RESOURCE = 100, /tmp/cybershk.titan.sock, 30
GRIDMANAGER_MAX_PENDING_SUBMITS_PER_RESOURCE = 20
GRIDMANAGER_MAX_JOBMANAGERS_PER_RESOURCE = 30

Globus Toolkit

Purpose: The Globus Toolkit provides tools for job submission, file transfer, and management of certificates and proxies.

How to obtain: You can download it from http://toolkit.globus.org/toolkit/downloads/latest-stable/ .

Special installation instructions: Configuration files are located in install_dir/etc/*.conf. You should review them, especially the certificate-related configuration, and make sure that they are correct.

The Globus Toolkit reached end-of-life in January 2018, so it's not clear that it will be needed going forward. Currently, it is installed on shock at /usr/local/globus .

rvGAHP

To enable rvGAHP submission for systems which don't support remote authentication using proxies (currently Titan), you should configure rvGAHP on the submission host as described here: https://github.com/juve/rvgahp .

Remote Resource

Pegasus-WMS

On the remote resource, only the Pegasus-worker packages are technically required, but I recommend installing all of Pegasus anyway. This may also require installing Ant. Typically, we install Pegasus to <CyberShake home>/utils/pegasus.

GRAM submission

To support GRAM submission, the Globus Toolkit (http://toolkit.globus.org/toolkit/) needs to be installed on the remote system. It's already installed at Titan and Blue Waters. Since the toolkit reached end-of-life in January 2018, there is some uncertainty as to what we will move to.

rvGAHP submission

For rvGAHP submission - our approach for systems which do not permit the use of proxies for remote authentication - you should follow the instructions at https://github.com/juve/rvgahp to set up rvGAHP correctly.

shock.usc.edu configuration

On shock, the primary directory for managing workflows is the 'runs' directory, /home/scec-02/cybershk/runs . This is where the create/plan/run scripts, the workflow configuration files, the catalogs, and the workflows themselves are located. Note that because of the way the Java paths in the scripts are set up, if you invoke them from a different directory they may not be able to find the DAX generator.

Create

Overview of create stage

In the creation stage, we invoke a wrapper script which calls the DAX Generator, which creates the DAX file for a CyberShake workflow.

At creation, we decide which workflow we want to run -- SGT only, post-processing only, or both ('integrated'). The reason for this option is that often we want to run the SGT and post-processing workflows in different places. For example, we might want to run the SGT workflow on Titan because of the large number of GPUs, and then the post-processing on Blue Waters because of its XE nodes. If you create an integrated workflow, both the SGT and post-processing parts will run on the same machine. (This is because of the way that we've set up the planning scripts; this could be changed in the future if needed).

Wrapper Scripts

Four wrapper scripts are available, depending on which kind of workflow you are creating.

On shock, all of these wrapper scripts are installed in /home/scec-02/cybershk/runs. Each creates a directory, <site name>_<workflow type>_dax/run_<run_id>, where all the workflow files are located for that run.

create_sgt_dax.sh

Purpose: To create the DAX files for an SGT-only workflow.

Detailed description: create_sgt_dax.sh takes the command-line arguments and, by querying the database determines a Run ID to assign to the run. The entry corresponding to this run in the database is either updated or created. This run ID is then added to the file <site short name>_SGT_dax/run_table.txt. It then compiles the DAX Generator (in case any changes have been made) and runs it with the correct command-line arguments, creating the DAXes. Next, a directory, <site short name>_SGT_dax/run_<run id>, is created, and the DAX files are moved into that directory. Finally, the run in the database is edited to reflect that creation is complete.

Needs to be changed if:

New velocity models are added. The wrapper encodes a mapping between a string and the velocity model ID in lines 129-152, and a new entry must be added for a new model.
New science parameters need to be tracked. Currently the site name, ERF id, SGT variation id, rupture variation scenario id, velocity model id, frequency, and source frequency are used. If new parameters are important, they would need to be captured, included in the run_table file, and passed to the Run Manager (which would also need to be edited to include it).
Arguments to the DAX Generator change.

Source code location: http://source.usc.edu/svn/cybershake/import/trunk/runs/create_sgt_dax.sh

Author: Scott Callaghan

Dependencies: Run Manager

Executable chain:

 create_sgt_dax.sh
   CyberShake_SGT_DAXGen

Compile instructions:None

Usage:

Usage: ./create_sgt_dax.sh [-h] <-v VELOCITY_MODEL> <-e ERF_ID> <-r RV_ID> <-g SGT_ID> <-f FREQ> <-s SITE> [-q SRC_FREQ] [--sgtargs SGT dax generator args]
		-h 			display this help and exit
		-v VELOCITY_MODEL	select velocity model, one of v4 (CVM-S4), vh (CVM-H), vsi (CVM-S4.26), vs1 (SCEC 1D model), vhng (CVM-H, no GTL), or vbbp (BBP 1D model).
		-e ERF_ID		ERF ID
		-r RUP_VAR_ID		Rupture Variation ID
		-g SGT_ID		SGT ID
		-f FREQ			Simulation frequency (0.5 or 1.0 supported)
		-q SRC_FREQ		Optional: SGT source filter frequency
		-s SITE			Site short name
	
	Can be followed by optional SGT arguments:
	usage: CyberShake_SGT_DAXGen <output filename> <destination directory>
                             [options] [-f <runID file, one per line> | -r <runID1> <runID2> ... ]
 -d,--handoff            Run handoff job, which puts SGT into pending file
                         on shock when completed.
 -f <runID_file>         File containing list of Run IDs to use.
 -h,--help               Print help for CyberShake_SGT_DAXGen
 -mc <max_cores>         Maximum number of cores to use for AWP SGT code.
 -mv <minvs>             Override the minimum Vs value
 -ns,--no-smoothing      Turn off smoothing (default is to smooth)
 -r <runID_list>         List of Run IDs to use.
 -sm,--separate-md5      Run md5 jobs separately from PostAWP jobs
                         (default is to combine).
 -sp <spacing>           Override the default grid spacing, in km.
 -sr,--server <server>   Server to use for site parameters and to insert
                         PSA values into
 -ss <sgt_site>          Site to run SGT workflows on (optional)
 -sv,--split-velocity    Use separate velocity generation and merge jobs
                         (default is to use combined job)

Input files: None

Output files: DAX files (schema is defined here: https://pegasus.isi.edu/documentation/schemas/dax-3.6/dax-3.6.html). Specifically, CyberShake_SGT_<site>.dax.

create_stoch_dax.sh

Purpose: To create the DAX files for an stochastic-only post-processing workflow.

Detailed description: create_stoch_dax.sh takes the command-line arguments and, by querying the database determines a Run ID to assign to the run. The entry corresponding to this run in the database is either updated or created. This run ID is then added to the file <site short name>_Stoch_dax/run_table.txt. It then compiles the DAX Generator (in case any changes have been made) and runs it with the correct command-line arguments, including a low-frequency run ID to be augmented, and the DAXes are created. Next, a directory, <site short name>_Stoch_dax/run_<run id>, is created, and the DAX files are moved into that directory. Finally, the run in the database is edited to reflect that creation is complete.

Needs to be changed if:

Arguments to the DAX Generator change.

Source code location: http://source.usc.edu/svn/cybershake/import/trunk/runs/create_stoch_dax.sh

Author: Scott Callaghan

Dependencies: Run Manager

Executable chain:

 create_stoch_dax.sh
   CyberShake_Stochastic_DAXGen

Compile instructions:None

Usage:

Usage: ./create_stoch_wf.sh [-h] <-l LF_RUN_ID> <-e ERF_ID> <-r RV_ID> <-f MERGE_FREQ> <-s SITE> [--daxargs DAX generator args]
                -h                      display this help and exit
		-l LF_RUN_ID		Low-frequency run ID to combine
                -e ERF_ID               ERF ID
                -r RUP_VAR_ID           Rupture Variation ID
                -f MERGE_FREQ           Frequency to merge LF and stochastic results
                -s SITE                 Site short name

        Can be followed by DAX arguments:
        usage: CyberShake_Stochastic_DAXGen <runID> <directory>
 -d,--debug                    Debug flag.
 -h,--help                     Print help for CyberShake_HF_DAXGen
 -mf <merge_frequency>         Frequency at which to merge the LF and HF
                               seismograms.
 -nd,--no-duration             Omit duration calculations.
 -nls,--no-low-site-response   Omit site response calculation for
                               low-frequency seismograms.
 -nr,--no-rotd                 Omit RotD calculations.
 -nsr,--no-site-response       Omit site response calculation.

Input files: None

Output files: DAX files (schema is defined here: https://pegasus.isi.edu/documentation/schemas/dax-3.6/dax-3.6.html). Specifically, CyberShake_Stoch_<site>_top.dax and CyberShake_Stoch_<site>_DB_Products.dax.

create_pp_wf.sh

Purpose: To create the DAX files for a deterministic-only post-processing workflow.

Detailed description: create_pp_wf.sh takes the command-line arguments and, by querying the database determines a Run ID to assign to the run. The entry corresponding to this run in the database is either updated or created. This run ID is then added to the file <site short name>_PP_dax/run_table.txt. It then compiles the DAX Generator (in case any changes have been made) and runs it with the correct command-line arguments, including a low-frequency run ID to be augmented, and the DAXes are created. Next, a directory, <site short name>_PP_dax/run_<run id>, is created, and the DAX files are moved into that directory. Finally, the run in the database is edited to reflect that creation is complete.

Needs to be changed if:

New velocity models are added. The wrapper encodes a mapping between a string and the velocity model ID in lines 110-130, and a new entry must be added for a new model.
New science parameters need to be tracked. Currently the site name, ERF id, SGT variation id, rupture variation scenario id, velocity model id, frequency, and source frequency are used. If new parameters are important, they would need to be captured, included in the run_table file, and passed to the Run Manager (which would also need to be edited to include it).
Arguments to the DAX Generator change.

Source code location: http://source.usc.edu/svn/cybershake/import/trunk/runs/create_pp_wf.sh

Author: Scott Callaghan

Dependencies: Run Manager

Executable chain:

 create_pp_wf.sh
   CyberShake_PP_DAXGen

Compile instructions:None

Usage:

Usage: ./create_pp_wf.sh [-h] <-v VELOCITY MODEL> <-e ERF_ID> <-r RV_ID> <-g SGT_ID> <-f FREQ> <-s SITE> [-q SRC_FREQ] [--ppargs DAX generator args]
-h display this help and exit
-v VELOCITY_MODEL select velocity model, one of v4 (CVM-S4), vh (CVM-H), vsi (CVM-S4.26), vs1 (SCEC 1D model), vhng (CVM-H, no GTL), or vbbp (BBP 1D model).
-e ERF_ID ERF ID
-r RUP_VAR_ID Rupture Variation ID
-g SGT_ID SGT ID
-f FREQ Simulation frequency (0.5 or 1.0 supported)
-s SITE Site short name
-q SRC_FREQ Optional: SGT source filter frequency

Can be followed by optional PP arguments:
usage: CyberShake_PP_DAXGen <runID> <directory>
-d,--debug Debug flag.
-ds,--direct-synth Use DirectSynth code instead of extract_sgt
and SeisPSA to perform post-processing.
-du,--duration Calculate duration metrics and insert them
into the database.
-ff,--file-forward Use file-forwarding option. Requires PMC.
-ge,--global-extract-mpi Use 1 extract SGT MPI job, run as part of pre
workflow.
-h,--help Print help for CyberShake_PP_DAXGen
-hf <high-frequency> Lower-bound frequency cutoff for stochastic
high-frequency seismograms (default 1.0), required for high frequency run
-k,--skip-md5 Skip md5 checksum step. This option should
only be used when debugging.
-lm,--large-mem Use version of SeisPSA which can handle
ruptures with large numbers of points.
-mr <factor> Use SeisPSA version which supports multiple
synthesis tasks per invocation; number of seis_psa jobs per invocation.
-nb,--nonblocking-md5 Move md5 checksum step out of the critical
path. Entire workflow will still abort on error.
-nc,--no-mpi-cluster Do not use pegasus-mpi-cluster
-nf,--no-forward Use no forwarding.
-nh,--no-hierarchy Use directory hierarchy on compute resource
for seismograms and PSA files.
-nh,--no-hf-synth Use separate executables for high-frequency
srf2stoch and hfsim, rather than hfsynth
-ni,--no-insert Don't insert ruptures into database (used for
testing)
-nm,--no-mergepsa Use separate executables for merging broadband
seismograms and PSA, rather than mergePSA
-ns,--no-seispsa Use separate executables for both synthesis
and PSA
-p <partitions> Number of partitions to create.
-ps <pp_site> Site to run PP workflows on (optional)
-q,--sql Create sqlite file containing (source,
rupture, rv) to sub workflow mapping
-r,--rotd Calculate RotD50, the RotD50 angle, and
RotD100 for rupture variations and insert them into the database.
-s,--separate-zip Run zip jobs as separate seismogram and PSA
zip jobs.
-se,--serial-extract Use serial version of extraction code rather
than extract SGT MPI.
-sf,--source-forward Aggregate files at the source level instead of
the default rupture level.
-sp <spacing> Override the default grid spacing, in km.
-sr,--server <server> Server to use for site parameters and to
insert PSA values into
-z,--zip Zip seismogram and PSA files before
transferring.

Input files: None

Output files: DAX files (schema is defined here: https://pegasus.isi.edu/documentation/schemas/dax-3.6/dax-3.6.html). Specifically, CyberShake_<site>.dax, CyberShake_<site>_pre.dax, CyberShake_<site>_Synth.dax, CyberShake_<site>_DB_Products.dax, and CyberShake_<site>_post.dax.

create_full_wf.sh

Purpose: To create the DAX files for a deterministic-only full (SGT + post-processing) workflow.

Detailed description: create_full_wf.sh takes the command-line arguments and, by querying the database determines a Run ID to assign to the run. The entry corresponding to this run in the database is either updated or created. This run ID is then added to the file <site short name>_Integrated_dax/run_table.txt. It then compiles the DAX Generator (in case any changes have been made) and runs it with the correct command-line arguments, including a low-frequency run ID to be augmented, and the DAXes are created. Next, a directory, <site short name>_Integrated_dax/run_<run id>, is created, and the DAX files are moved into that directory. Finally, the run in the database is edited to reflect that creation is complete.

Needs to be changed if:

New velocity models are added. The wrapper encodes a mapping between a string and the velocity model ID in lines 107-129, and a new entry must be added for a new model.
New science parameters need to be tracked. Currently the site name, ERF id, SGT variation id, rupture variation scenario id, velocity model id, frequency, and source frequency are used. If new parameters are important, they would need to be captured, included in the run_table file, and passed to the Run Manager (which would also need to be edited to include it).
Arguments to the DAX Generator change.

Source code location: http://source.usc.edu/svn/cybershake/import/trunk/runs/create_full_wf.sh

Author: Scott Callaghan

Dependencies: Run Manager

Executable chain:

 create_full_wf.sh
   CyberShake_Integrated_DAXGen

Compile instructions:None

Usage:

Usage: ./create_full_wf.sh [-h] <-v VELOCITY_MODEL> <-e ERF_ID> <-r RUP_VAR_ID> <-g SGT_ID> <-f FREQ> <-s SITE> [-q SRC_FREQ] [--sgtargs <SGT dax generator args>] [--ppargs <post-processing args>]
		-h			display this help and exit
                -v VELOCITY_MODEL       select velocity model, one of v4 (CVM-S4), vh (CVM-H), vsi (CVM-S4.26), vs1 (SCEC 1D model), vhng (CVM-H, no GTL), vbbp (BBP 1D model), vcca1d (CCA 1D model), or vcca (CCA-06 3D model).
                -e ERF_ID               ERF ID
                -r RUP_VAR_ID           Rupture Variation ID
                -g SGT_ID               SGT ID
                -f FREQ                 Simulation frequency (0.5 or 1.0 supported)
		-s SITE                 Site short name
                -q SRC_FREQ             Optional: SGT source filter frequency

	Can be followed by optional arguments:
	usage: CyberShake_Integrated_DAXGen <output filename> <destination
                                    directory> [options] [-f <runID file, one per line> | -r <runID1> <runID2>
                                    ... ]
 -h,--help                Print help for CyberShake_Integrated_DAXGen
    --ppargs <ppargs>     Arguments to pass through to post-processing.
 -rf <runID_file>         File containing list of Run IDs to use.
 -rl <runID_list>         List of Run IDs to use.
    --server <server>     Server to use for site parameters and to insert
                          PSA values into
    --sgtargs <sgtargs>   Arguments to pass through to SGT workflow.
SGT DAX Generator arguments:
usage: CyberShake_SGT_DAXGen <output filename> <destination directory>
                             [options] [-f <runID file, one per line> | -r <runID1> <runID2> ... ]
 -d,--handoff            Run handoff job, which puts SGT into pending file
                         on shock when completed.
 -f <runID_file>         File containing list of Run IDs to use.
 -h,--help               Print help for CyberShake_SGT_DAXGen
 -mc <max_cores>         Maximum number of cores to use for AWP SGT code.
 -mv <minvs>             Override the minimum Vs value
 -ns,--no-smoothing      Turn off smoothing (default is to smooth)
 -r <runID_list>         List of Run IDs to use.
 -sm,--separate-md5      Run md5 jobs separately from PostAWP jobs
                         (default is to combine).
 -sp <spacing>           Override the default grid spacing, in km.
 -sr,--server <server>   Server to use for site parameters and to insert
                         PSA values into
 -ss <sgt_site>          Site to run SGT workflows on (optional)
 -sv,--split-velocity    Use separate velocity generation and merge jobs
                         (default is to use combined job)
PP DAX Generator arguments:
usage: CyberShake_PP_DAXGen <runID> <directory>
 -d,--debug                 Debug flag.
 -ds,--direct-synth         Use DirectSynth code instead of extract_sgt
                            and SeisPSA to perform post-processing.
 -du,--duration             Calculate duration metrics and insert them
                            into the database.
 -ff,--file-forward         Use file-forwarding option.  Requires PMC.
 -ge,--global-extract-mpi   Use 1 extract SGT MPI job, run as part of pre
                            workflow.
 -h,--help                  Print help for CyberShake_PP_DAXGen
 -hf <high-frequency>       Lower-bound frequency cutoff for stochastic
                            high-frequency seismograms (default 1.0), required for high frequency run
 -k,--skip-md5              Skip md5 checksum step.  This option should
                            only be used when debugging.
 -lm,--large-mem            Use version of SeisPSA which can handle
                            ruptures with large numbers of points.
 -mr <factor>               Use SeisPSA version which supports multiple
                            synthesis tasks per invocation; number of seis_psa jobs per invocation.
 -nb,--nonblocking-md5      Move md5 checksum step out of the critical
                            path. Entire workflow will still abort on error.
 -nc,--no-mpi-cluster       Do not use pegasus-mpi-cluster
 -nf,--no-forward           Use no forwarding.
 -nh,--no-hierarchy         Use directory hierarchy on compute resource
                            for seismograms and PSA files.
 -nh,--no-hf-synth          Use separate executables for high-frequency
                            srf2stoch and hfsim, rather than hfsynth
 -ni,--no-insert            Don't insert ruptures into database (used for
                            testing)
 -nm,--no-mergepsa          Use separate executables for merging broadband
                            seismograms and PSA, rather than mergePSA
 -ns,--no-seispsa           Use separate executables for both synthesis
                            and PSA
 -p <partitions>            Number of partitions to create.
 -ps <pp_site>              Site to run PP workflows on (optional)
 -q,--sql                   Create sqlite file containing (source,
                            rupture, rv) to sub workflow mapping
 -r,--rotd                  Calculate RotD50, the RotD50 angle, and
                            RotD100 for rupture variations and insert them into the database.
 -s,--separate-zip          Run zip jobs as separate seismogram and PSA
                            zip jobs.
 -se,--serial-extract       Use serial version of extraction code rather
                            than extract SGT MPI.
 -sf,--source-forward       Aggregate files at the source level instead of
                            the default rupture level.
 -sp <spacing>              Override the default grid spacing, in km.
 -sr,--server <server>      Server to use for site parameters and to
                            insert PSA values into
 -z,--zip                   Zip seismogram and PSA files before
                            transferring.

Input files: None

Output files: DAX files (schema is defined here: https://pegasus.isi.edu/documentation/schemas/dax-3.6/dax-3.6.html).. Specifically, CyberShake_Integrated_<site>.dax, CyberShake_<site>_pre.dax, CyberShake_<site>_Synth.dax, CyberShake_<site>_DB_Products.dax, CyberShake_<site>_post.dax.

Sample invocations

Below are sample invocations used for Study 15.4, Study 15.12, and Study 17.3, to demonstrate how the wrapper scripts are commonly used.

Study 15.4 (1 Hz deterministic)

SGT workflow:

./create_sgt_dax.sh -s PAS -v vsi -e 36 -r 6 -g 8 -f 1.0 -q 2.0 --sgtargs -sm

Site PAS
Velocity model CVM-S4.26
ERF ID 36 (UCERF 2, 200m spacing)
Rup Var Scenario ID 6 (G&P 2014, uniform hypocenters)
SGT Variation ID 8 (AWP-ODC-SGT, GPU version)
Maximum frequency of 1 Hz
SGT source filtered at 2 Hz
Separate md5sums from the PostAWP job (this was needed only for Titan because of limits on the runtime for small jobs)

Integrated workflow:

./create_full_wf.sh -s PAS -v vsi -e 36 -r 6 -g 8 -f 1.0 -q 2.0 --sgtargs -ss titan -sm --ppargs -ps bluewaters -ds -nb -r

Site PAS
Velocity model CVM-S4.26
ERF ID 36 (UCERF 2, 200m spacing)
Rup Var Scenario ID 6 (G&P 2014, uniform hypocenters)
SGT Variation ID 8 (AWP-ODC-SGT, GPU version)
Maximum frequency of 1 Hz
SGT source filtered at 2 Hz
Using titan for SGT site (used when we plan the AWP sub-workflow, and to update the database)
Separate md5sums from the PostAWP job (this was needed only for Titan because of limits on the runtime for small jobs)
Using bluewaters for PP site (used when planning some of the post-processing workflows, and to set the value in the database correctly)
Use the DirectSynth code for post-processing
Use non-blocking MD5sum checks in the post-processing workflow
Calculate RotD as well as component PSA.

Study 15.12 (10 Hz stochastic)

Stoch workflow:

./create_stoch_wf.sh -s PAS -l 3878 -e 36 -r 6 -f 1.0 --daxargs -mf 1.0

Site PAS
Use Run ID 3878 for low-frequency deterministic
ERF ID 36 (UCERF 2, 200m spacing)
Rup Var Scenario ID 6 (G&P 2014, uniform hypocenters)
Merge deterministic and stochastic results at 1.0 Hz (argument also needed to DAX generator)

Study 17.3 (1 Hz deterministic, different spacing and minimum Vs)

SGT workflow:

./create_sgt_dax.sh -s OSI -v vcca -e 36 -r 6 -g 8 -f 1.0 -q 2.0 -mv 900.0 -sp 0.175 -d --server moment.usc.edu

Site OSI
Velocity model CCA-06
ERF ID 36 (UCERF 2, 200m spacing)
Rup Var Scenario ID 6 (G&P 2014, uniform hypocenters)
SGT Variation ID 8 (AWP-ODC-SGT, GPU version)
Maximum frequency of 1 Hz
SGT source filtered at 2 Hz
Minimum Vs of 900 m/s
Grid spacing of 0.175 km
Include handoff job, so when SGT workflow completes it will be put back into the site queue for the post-processing
Use moment.usc.edu as the run server

PP workflow:

./create_pp_wf.sh -s OSI -v vcca1d -e 36 -r 6 -g 8 -f 1.0 -q 2.0 --ppargs -ds -du -nb -r -sp 0.175  --server moment.usc.edu

Site OSI
Velocity model CCA 1D
ERF ID 36 (UCERF 2, 200m spacing)
Rup Var Scenario ID 6 (G&P 2014, uniform hypocenters)
SGT Variation ID 8 (AWP-ODC-SGT, GPU version)
Maximum frequency of 1 Hz
SGT source filtered at 2 Hz
Use the DirectSynth code for post-processing
Calculate durations
Use non-blocking MD5sum checks in the post-processing workflow
Calculate RotD as well as component PSA
Grid spacing of 0.175 km
Use moment.usc.edu as the run server

Integrated workflow:

./create_full_wf.sh -s OSI -v vcca -e 36 -r 6 -g 8 -f 1.0 -q 2.0 --server moment.usc.edu --sgtargs -ss titan -mv 900.0 -sp 0.175 --ppargs -ps titan -ds -du -nb -r -sp 0.175

Site OSI
Velocity model CCA-06
ERF ID 36 (UCERF 2, 200m spacing)
Rup Var Scenario ID 6 (G&P 2014, uniform hypocenters)
SGT Variation ID 8 (AWP-ODC-SGT, GPU version)
Maximum frequency of 1 Hz
SGT source filtered at 2 Hz
Use moment.usc.edu as the run server
Use Titan for the SGT workflow
Minimum Vs of 900 m/s
Grid spacing of 0.175 km
Use Titan for the PP workflow
Use the DirectSynth code for post-processing
Calculate durations
Use non-blocking MD5sum checks in the post-processing workflow
Calculate RotD as well as component PSA
Grid spacing of 0.175 km

DAX Generator

The DAX Generator consists of multiple complex Java classes. It supports a large number of arguments, enabling the user to select the CyberShake science parameters (site, erf, velocity model, rupture variation scenario id, frequency, spacing, minimum vs cutoff) and the technical parameters (which post-processing code to select, which SGT code, etc.) to perform the run with. Different entry classes support creating just an SGT workflow, just a post-processing (+ data product creation) workflow, or both combined into an integrated workflow.

A detailed overview of the DAX Generator is available here: CyberShake DAX Generator.

Plan

The next stage of workflow preparation is called 'planning'. In this stage, the DAX generated in the creation step is converted into Condor-formatted DAG files. As part of this process, the job and file names in the DAX are converted into specific paths in the DAG. Additionally, Pegasus wraps all executables in kickstart, which gathers runtime information on the job, and also adds other jobs such as registration, directory creation, and staging.

Catalogs

Before you can successfully plan a workflow, you need to have catalogs, which explain to Pegasus how to resolve the logical names into physical ones, and also sets up any site-specific configuration information. There are three catalogs to consider:

Transformation Catalog
Site Catalog
Replica Location Service (RLS)

Transformation Catalog (TC)

Full documentation on the TC is available in the Pegasus documentation. Here we will provide a brief overview.

For every combination of executable you want to run and system you want to run it on, there needs to be an entry in the TC. This makes sense; somehow, Pegasus needs to be able to replace the logical name in the DAX with physical paths. We use a text file for the TC. On shock, the TC is located in /home/scec-02/cybershk/runs/config/tc.txt .

A sample entry in the TC looks like this:

tr scec::UCVMMesh:1.0 {
        site bluewaters {
                pfn "/projects/sciteam/baln/CyberShake/software/UCVM/single_exe.py"
                arch "x86_64"
                os "LINUX"
                type "INSTALLED"
                profile globus "host_count" "32"
                profile globus "count" "1024"
                profile globus "maxwalltime" "45"
                profile globus "jobtype" "single"
                profile globus "nodetype" "xe"
                profile globus "project" "baln"
                profile pegasus "cores" "1024"
        }
        site titan {
                pfn "/lustre/atlas/proj-shared/geo112/CyberShake/software/UCVM/single_exe.py"
                arch "x86_64"
                os "LINUX"
                type "INSTALLED"
                profile globus "hostcount" "96"
                profile globus "count" "1536"
                profile globus "maxwalltime" "60"
                profile globus "jobtype" "single"
                profile globus "account" "GEO112"
                profile pegasus "cores" "1536"
        }
}

The name of the job is in the format namespace::jobname:version . These values must match the values specified when the DAX is created, or Pegasus won't know they're the same job.

The 'pfn', 'arch', 'os', and 'type' entries are required. Only the 'pfn' (short for Physical File Name) entry should change between systems. The 'profile globus' entries provide a way to give system-specific parameters. For example, you can specify the number of nodes ('count'), the number of cores ('hostcount'), the maximum runtime ('maxwalltime'), and the project to bill. 'jobtype single' means that the entry point - the Python script single_exe.py - will be run serially from the command line. This is what we want, as we call aprun ourselves from the Python script.

If an entry is missing, or the file is not in the correct format, Pegasus will throw an error during planning.

In addition to the CyberShake jobs, a few Pegasus jobs also have entries in the TC, such as pegasus::mpiexec and pegasus::transfer. This provides a way to specify custom wrappers or configuration for these internal Pegasus jobs.

Site Catalog (SC)

The Site Catalog contains site-specific information. For example, the URLs of the GridFTP endpoints or GRAM servers, paths to the appropriate X509 certificate, and where on disk workflows should be executed.

Replica Location Service (RLS)

Properties file

Scripts

As in the Create stage, we run bash scripts which wrap the pegasus-plan command.

SGT workflow

Purpose: To plan an SGT-only workflow.

Detailed description: plan_sgt.sh takes command-line arguments with the DAX to plan and the execution system, and

Needs to be changed if:

Arguments to the DAX Generator change.

Source code location: http://source.usc.edu/svn/cybershake/import/trunk/runs/create_stoch_dax.sh

Author: Scott Callaghan

Dependencies: Run Manager

Executable chain:

 create_stoch_dax.sh
   CyberShake_Stochastic_DAXGen

Compile instructions:None

Usage:

Usage: ./create_stoch_wf.sh [-h] <-l LF_RUN_ID> <-e ERF_ID> <-r RV_ID> <-f MERGE_FREQ> <-s SITE> [--daxargs DAX generator args]
                -h                      display this help and exit
		-l LF_RUN_ID		Low-frequency run ID to combine
                -e ERF_ID               ERF ID
                -r RUP_VAR_ID           Rupture Variation ID
                -f MERGE_FREQ           Frequency to merge LF and stochastic results
                -s SITE                 Site short name

        Can be followed by DAX arguments:
        usage: CyberShake_Stochastic_DAXGen <runID> <directory>
 -d,--debug                    Debug flag.
 -h,--help                     Print help for CyberShake_HF_DAXGen
 -mf <merge_frequency>         Frequency at which to merge the LF and HF
                               seismograms.
 -nd,--no-duration             Omit duration calculations.
 -nls,--no-low-site-response   Omit site response calculation for
                               low-frequency seismograms.
 -nr,--no-rotd                 Omit RotD calculations.
 -nsr,--no-site-response       Omit site response calculation.

Input files: None

Output files: DAX files (schema is defined here: https://pegasus.isi.edu/documentation/schemas/dax-3.6/dax-3.6.html). Specifically, CyberShake_Stoch_<site>_top.dax and CyberShake_Stoch_<site>_DB_Products.dax.

PP workflow

Stochastic workflow

Integrated workflow

Run

X509 certificates

Pegasus-MPI-Cluster

Additional Workflow Jobs

Run Manager

The Run Manager is a collection of python scripts which wrap database commands used to query or modify the status of a CyberShake run. They are used both in create/plan/run scripts, and also in the Run Manager website. The Run Manager also enforces a state transition table, documented here. These scripts are rarely called directly, but are used extensively in the create/plan/run scripts. These scripts include:

create_run.py: Create a new run in the database given a series of science parameters.
create_stoch_run.py: Similar, but creates a new run with stochastic parameters, which requires tracking of different things.
edit_run.py: Modify the status or comment field for an existing run.
find_run.py: Search the database for a preexisting run, given a series of science parameters.
find_stoch_run.py: Finds a preexisting run with stochastic components.
valid_run.py: Checks to see if a run is in a valid state before applying a state transition.

The RunManager helper scripts are at http://source.usc.edu/svn/cybershake/import/trunk/runs/runmanager , with the shared core at http://source.usc.edu/svn/cybershake/import/trunk/RunManager/ .

The RunManager scripts would need to be edited if:

The database parameters change (Config.py, line 6)
A new compute site is added (Config.py, add to HOST_LIST in line 15)
A new user is added (Config.py, add to USER_LIST in line 20)
New science parameters are added to the database, which are used to differentiate between runs. Changes would need to be made to create_run.py, find_run.py, and RunManager.py.

On shock, these scripts are installed in /home/scec-02/cybershk/runs/runmanager .

CyberShake Workflow Framework

Contents

Overview

Software Dependencies

Workflow Submit Host

Pegasus-WMS

HTCondor

Globus Toolkit

rvGAHP

Remote Resource

Pegasus-WMS

GRAM submission

rvGAHP submission

shock.usc.edu configuration

Create

Wrapper Scripts

create_sgt_dax.sh

create_stoch_dax.sh

create_pp_wf.sh

create_full_wf.sh

Sample invocations

Study 15.4 (1 Hz deterministic)

Study 15.12 (10 Hz stochastic)

Study 17.3 (1 Hz deterministic, different spacing and minimum Vs)

DAX Generator

Plan

Catalogs

Transformation Catalog (TC)

Site Catalog (SC)

Replica Location Service (RLS)

Properties file

Scripts

SGT workflow

PP workflow

Stochastic workflow

Integrated workflow

Run

X509 certificates

Pegasus-MPI-Cluster

Additional Workflow Jobs

Run Manager

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