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lume-impact-live-demo

Demonstration of LUME-Impact running a live model fetching data from the LCLS EPICS network

Setup

Make the lume-live-dev environment: conda env create --file lume-live-dev.yml

Convert notebooks to .py files:

./build.bash

EPICS:

ssh -fN -L 24666:lcls-prod01.slac.stanford.edu:5068 centos7.slac.stanford.edu
export EPICS_CA_NAME_SERVERS=localhost:24666

Test with: caget KLYS:LI22:11:KPHR

Run

For example, LCLS on SDF with default parameters:

ipython lume-impact-live-demo.py

LCLS on S3DF with default parameters:

ipython lume-impact-live-demo.py -- -t "s3df"

Parameters

All Parameters to run lume-impact-live-demo.py file -

-d Debug=True/False
-l Live=True/False
-v USE_VCC=True/False
-m Please pass the model name here (sc_inj/facet/lcls)
-h Please pass the host name here (sdf/singularity)

Defaults -
debug=False
use_vcc=True
live=True
model=sc_inj
host=sdf

Running Lume-Impact-Live-Demo on S3DF

Please remember to follow all the above steps (including connecting to PVs). Please wait roughly 5-10 mins for job to complete one simulation.

export LCLS_LATTICE=/sdf/group/ad/beamphysics/lcls-lattice
export SCRATCH=/sdf/group/ad/beamphysics/lume-impact-live-demo/SCRATCH3 (Try not using the lscratch or scratch on S3DF. Somehow, it didn't work for me.)
export LUME_IMPACT_CODEBASE_LOCATION=/sdf/group/ad/beamphysics/lume-impact-live-demo
export LUME_OUTPUT_FOLDERS=/sdf/group/ad/beamphysics/lume-impact-live-demo/output
export SCRATCH=/sdf/group/ad/beamphysics/lume-impact-live-demo/SCRATCH

ipython /sdf/group/ad/beamphysics/lume-impact-live-demo/lume-impact-live-demo.py -- -t "s3df"

Running Lume-Impact-Live-Demo on S3DF as a Service

Easiest way to run lume-impact-live-demo on S3DF as a Service is through Cron Jobs. Please remember to check all the export variables in cron_job_setup.sh Saving below config should automatically trigger the job in background. Use logs to monitor the job. Otherwise, You can see the pid saved in ~/tmp/myprogram.pid which signifies the last pid that executed this program.

crontab -e

#Opens a file. Please enter below details and save it. 
SHELL=/bin/bash
BASH_ENV=~/.bashrc
* * * * * source /sdf/group/ad/beamphysics/lume-impact-live-demo/cron_job_setup.sh

TOML properties file

Running the simulation requires definition of the following variables within a toml file:

Variable Description
host Host of Impact sim
config_file Impact configuration file
distgen_input_file Input to distgen generation
workdir Working directory of simulation run
summary_output_dir Output directory for summary files
plot_output_dir Output directory of plot files
archive_dir Output directory for archive files
shapshot_dir Output directory for snapshot files
distgen_laser_file File for generating distgen input
num_procs Number of processes to use
mpi_run command for running mpi

Running on SDF additionally requires:

Variable Description
impact_command Command for Impact execution
impact_command_mpi Command for running MPI

Default configurations are given in the example environment files packaged with this repository.