Overview of Software Options In OSG Connect
There are several options available for managing the software needs of your work within OSG Connect. In general, OSG Connect can support most popular, open source software that fit the distributed high throughput computing model. At present, we do not have or support most commercial software due to licensing issues.
Here we review options, and provide links to additonal information, for using software installed by users, software available as precompiled binaries or via containers, and preinstalled software via modules.
Install Your Own Software
For most cases, it will be advantageous for you to install the software needed for your jobs. This not only gives you the greatest control over your computing environment, but will also make your jobs more distributable, allowing you to run jobs at more locations.
Installing your own software can be performed interactively on your assigned login server. More
information about how to install your own software from source code can be found at
Compiling Software for OSG Connect.
When installing software on the login node, your software will be specifically compiled against
the Red Hat Enterprise Linux (RHEL) 7 OS used on the login nodes. In most cases, subsequent
jobs that use this software will also need to run on a RHEL 7 OS which can be specified by the
requirements attribute of your HTCondor submit files - an example is provided in the software
compilation guide linked above. Be sure to also review our
Introduction to Data Management on OSG Connect
guide to determine the appropriate method for transferring software with your jobs.
Use Precompiled Binaries and Prebuilt Executables
Some software may be available as a precompiled binary or prebuilt executable which provides a quick and easy way to run a program without the need for installation from source code. Binaries and executables are software files that are ready to run as is, however binaries should always be tested beforehand. There are several important considerations for using precompiled binaries in OSG Connect: 1.) only binary files compiled against a Linux operating system are suitable for use in OSG, 2.) some softwares have system and hardware dependencies that must be met in order to run properly, and 3.) the available binaries may not have been compiled with the feaures or configuration needed for your work.
Use Docker and Singularity Containers
Container systems provide users with customizable and reproducable computing and software environments. OSG Connect is compatible with both Singularity and Docker containers - the latter will be converted to a Singularity image and added to the OSG Connect container image repository. Users can choose from a set of pre-defined containers already availble within OSG Connect or can use published or custom made containers. More details on how to use containers in OSG Connect can be found in our Docker and Singularity Containers guide.
Access Software In Distributed Modules
Currently, OSG Connect provides over 200 preinstalled software, libraries, and
compiliers via distributed environment modules. Modules provide a streamlined option
for working with different software versions as well as managing library dependencies for
software. To run jobs that use modules, your HTCondor submit files must include additional
requirements to direct your jobs to appropriate compute nodes within OSG.
More details about using modules in OSG Connect can be found here.
Request Software For System-wide Installation via Modules
If your work would benefit from system-wide installation of open source software (made available via modules), please contact us at firstname.lastname@example.org.
This page was updated on Mar 18, 2021 at 17:36 from start/software/software-overview.md.