Hi Jenny, At first I thought you were referring to Pegasus: http://pegasus.isi.edu/ But then I realized you meant Pegasys: http://bioinformatics.ubc.ca/pegasys/ PegasUs and Taverna are designed to work over a grid (heterogeneous systems often connected via WAN). If you're just trying to create a workflow on a homogeneous cluster, something like Condor with DAGMan will probably work fine: http://www.cs.wisc.edu/condor/dagman/ But maybe you're also looking for something with a "connect the dots" interface. Pegasys and Taverna are of course two examples of this. Here's another one that I'm aware of: http://wildfire.bii.a-star.edu.sg/wildfire/ And the following are (AFAIK) independent of grid and external scheduling systems: http://www.scicraft.org/ http://scitegic.com/products_services/pipeline_pilot.htm BioPipe doesn't (yet, AFAIK) have a connect-the-dots GUI, but it's based on BioPerl: http://biopipe.org/ Cheers, Jeff Jenny Gan wrote: > We are looking to deploy our Apple Cluster in a week and we are very > interested in using Inforsense to compose our own workflows to meet the > Bioinformatics needs of our institute. However I am aware that there > are at least couple of open sources ones ( Pegasys and Taverna) out > there that look promising but (obviously) lacking the extensive > support. My question is, has anyone here been using workflow program, > commercial or opened source, and if so how has it been running for you? > I would appreciate your input very much, -- J.W. Bizzaro Bioinformatics Organization, Inc. (Bioinformatics.Org) E-mail: jeff at bioinformatics.org Phone: +1 508 890 8600 --