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Welcome to the SAGA Python wiki. These pages accompany the SAGA Python (a.k.a. Bliss) website and provide detailed information about installation and usage, as well as resources for developers. Below is the table of contents. A complete list of pages can be found here.
LATEST NEWS:
- 10-19-2012: SAGA Python (Bliss) 0.2.5 released on PyPi
- 07-10-2012: SAGA Python (Bliss) 0.2.4 released on PyPi
- 07-26-2012: SAGA Python (Bliss) 0.2.3 released on PyPi
- 06-12-2012: SAGA Python (Bliss) 0.2.2 released on PyPi
- 05-16-2012: SAGA Python (Bliss) 0.2.1 released on PyPi
SAGA Python (formally known and released as 'Bliss'), is a pragmatic, light-weight and low-overhead implementation of the OGF GFD.90 SAGA standard. SAGA Python is written 100% in Python (not just an API wrapper layer) and focuses on stability, usability and ease of deployment across distributed cyberinfrastructure.
SAGA Python is implemented as a plugin-based API protocol converter (see figure): a software developer codes his distributed application against the SAGA API, agnostic of the type of the underlying distributed infrastructure and middleware. Internally, a lightweight dispatch-engine finds the appropriate middleware plugin (see section 2) that can convert the SAGA calls to the middleware, e.g., PBS or Condor. This strategy helps to move the complexity associated with heterogeneous infrastructure away from the application layer into the access library layer, which significantly lowers the barrier for distributed application development.
SAGA Python is Open Source software and released under the MIT license. Development is coordinated by the RADICAL Group at Rutgers University in an open and transparent process that encourages and fosters community contribution (see section 5).
The latest version of SAGA Python comes with the following plug-ins:
- Local - Allows job execution (via fork) and file handling on the local machine.
- SSH - Allows job execution on remote hosts via SSH.
- GSISSH - Allows job execution on remote hosts via GSISSH.
- SFTP - Provides remote filesystem access via the SFTP protocol.
- PBS, PBS+SSH, PBS+GSISSH - (includes TORQUE). Provides local and remote access (SSH+GSISSH) to PBS/Torque clusters.
- SGE, SGE+SSH, SGE+GSISSH - Provides local and remote access (SSH+GSISSH) to Sun (Oracle) Grid Engine clusters.
More details can be found on the Plugins page
- Installation Guide - Explains how to install SAGA Python.
The following links should get you started using the SAGA Python module:
- SAGA Tutorial - A beginner's guide to SAGA Python.
- Known Problems And Solutions - A list of frequently asked questions (FAQs).
- Code Examples - A collection of Python examples.
- API Documentation - The latest version of the SAGA Python API documentation.
Like the SAGA standard itself, SAGA Python is a community project. We'd like to encourage everyone who is interested in contributing to SAGA Python, e.g., in the form of a new middleware plug-in, to read the Developer Guide (that should get you started) and/or to get in touch with us (see below for mailing list information).
We also run a continuous integration server that checks the SAGA Python codebase with a set of machines on FutureGrid and XSEDE. The results can be checked here.
We have a public mailing-list for general SAGA discussions and announcements ([email protected]) as well as a mailing-list for SAGA Python development-related issues ([email protected]). You are most welcome to join either of them!
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Your issue may be known or have a common solution - please check here before filing a report. If your issue is not mentioned in that list, please report bugs to the issue tracker.