Changes between Initial Version and Version 1 of 2014-09-18

Timestamp:

Sep 18, 2014, 4:07:52 PM (11 years ago)

Author:

Tom Goddard

Comment:

--

2014-09-18

@@ +1 @@
+= 18 September 2014 meeting =
+
+== Attendees ==
+
+Greg, Eric, Conrad, TomG
+
+== Agenda ==
+
+Presentation of Hydra architecture and migration path
+
+== Action Items ==
+
+Conrad: Toolshed and Tools API
+
+Greg: Session and Application object API
+
+Eric: Continue wx ui implementation.
+
+TomG: Continue ambient occlusion implementation
+
+== Results ==
+
+[http://www.cgl.ucsf.edu/chimera/data/hydra-sep2014/hydraarch.html Hydra architecture and migration path slides]
+
+TomG explained Hydra Session object that holds all application global state.
+
+Discussed the advantages of avoiding circular dependencies between Chimera 2 modules.
+Previously Scooter advocated this saying Cytoscape modules have a dependency graph that is a tree
+and communicating to a module that is not a dependent is only done by quequeing events.
+Eric and TomG did not understand the value of this.  Requires further discussion, maybe with Scooter.
+
+Conrad suggested current Hydra Session be divided into an Application class and a Session class where
+the latter stores global state and the former initializes that state at start-up.  This will allow code for
+different application start-up modes (e.g. nogui vs gui) to be cleanly separated.
+
+Discussed migration path from Hydra to a Chimera 2 release.  Conrad suggests that APIs for Session,
+Application, ToolShed and Tools to establish the framework is an immediate need, even if such APIs
+are only for in-lab developers after an initial release.
+