LDCS

Lightweight Distributed Computing System repo

This repo keeps:

1. the run time environments
2. the image pulling script
3. the production scripts used for LDCS production, collected per ldmx-sw release version.
4. the helper scripts used on the act machine for job submission

Setting up a new SIMPROD RTE:

Copy the runtime environment you want: runTimeEnvironments/LDMX-SIMPROD-x.y

to where you keep them on your site, e.g.

cp runTimeEnvironments/LDMX-SIMPROD-x.y /opt/arc-runtime/APPS/LDMX-SIMPROD-x.y

Note that these are LDCS specific files, so version numbers are independent of ldmx-sw versions.

Then enable it: arcctl rte enable APPS/LDMX-SIMPROD-x.y

Setting the local storage path

arcctl rte params-set APPS/LDMX-SIMPROD-x.y LDMX_STORAGE_BASE /your/local/storage/path/

Opting to keep a local copy of job output (available from version 3.0)

arcctl rte params-set APPS/LDMX-SIMPROD-x.y KEEP_LOCAL_COPY Y

This keeps a copy of job output in the local storage path. If KEEP_LOCAL_COPY is left empty (default), a local copy of job outout won't be kept. Job output is transferred to the final storage location (over GridFTP) regardless.

Setting up an image RTE for a new ldmx-sw release/image

Let's assume we have ldmx-sw release vX.Y.Z

Copy the runtime environment matching the release number: runTimeEnvironments/LDMX-X.Y.Z

to where you keep them on your site, e.g.

cp runTimeEnvironments/LDMX-X.Y.Z /opt/arc-runtime/APPS/LDMX-X.Y.Z

Then enable it: arcctl rte enable APPS/LDMX-X.Y.Z

Next: instructions on how to build the corresponding new image.

Image building

Script: images/build_from_docker.sh

Again let's assume we have ldmx-sw release vX.Y.Z

Run with bash /path/to/LDCS/images/build_from_docker.sh vX.Y.Z [optional: repo name]

in the directory where you want the image to end up. (Maybe images is a sensible place for them -- feel free to keep them there. They are too big to reasonably add them to github though.) This pulls a docker image from dockerhub and builds a singularity image from it. It might take a few minutes. Then point to it in the new runtime environment (after following RTE setup instructions above):

arcctl rte params-set APPS/LDMX-X.Y.Z SINGULARITY_IMAGE /path/to/beautiful-long-name-of-newly-created-singularity-image.sif

For fun, double check the parameters: arcctl rte params-get APPS/LDMX-X.Y.Z

Checking the RTE parameters

arcctl rte params-get APPS/LDMX-SIMPROD-x.y

arcctl rte params-get APPS/LDMX-X.Y.Z

Checking which RTEs are enabled

arcctl rte list