Hi Herbert. Sorry for the late reply. Your message was sent to my SMTP system rather than my regular mail account (jeff at bioinformatics.org). > 1. Does piper run under windows? Not currently. But, since we are writing and rewriting with libraries which all run under Windows, it should work. We would only need some Windows developers to help with the port, since the project leaders all use *NIX. > 2. Is it tied in to CORBA? It is not an extention of CORBA, but we have been using it. There has been some discussion about using something else, either for part of Piper or all of it, or maybe just letting the object broker be pluggable. > 3. I see you move data back and forth using XML, how are you finding the > performance, we know that XML-RPC is ten times slower than straight > binary transfers and our applications requires as good a performance as > possible > since we're running numeric simulation applications. Only "internal" (brokering) information is passed using XML. Nodes communicate whichever way they normally would, with some security added by the broker. We say that Piper is "agnostic" about communication protocols and data formats used between nodes. It puts more of a burden on the Piper developer, but it makes the system more flexible. Cheers. Jeff