From - Fri Feb 12 18:19:46 1999 Received: from db.stanford.edu (Seaotter.Stanford.EDU [171.64.75.89]) by DB.Stanford.EDU (8.8.8/8.8.8) with ESMTP id SAA04792 for ; Fri, 12 Feb 1999 18:16:38 -0800 Message-ID: <36C4E167.37EC713A@db.stanford.edu> Date: Fri, 12 Feb 1999 18:20:24 -0800 From: Dorothea Beringer Organization: Stanford University X-Mailer: Mozilla 4.5 [en] (Win95; I) X-Accept-Language: en MIME-Version: 1.0 To: chaims@DB.Stanford.EDU Subject: Minutes of CHAIMS meeting from 2/10/99 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Mozilla-Status: 8001 Date[ February 10, 1999 ] Recordnr[ ] Who[ wp, lm, db Agenda[ Minutes[ Progressive and partial extract: ================================ Information we want from a megamodule during an invocation: 1) time remaining for completion / percentage done (concerns either the whole method or a specific result) ==> do we have to enhance estimate to be used on an invocation? ==> postponed for invocation scheduling 2) number and which results are done and can be extracted 3) progress information of a specific result Discussion: do we need a measurement of the progress of a method, or can we live with repeated estimates? What do we need for invocation scheduling? Measuring the progress of a method would be neat, only no legacy code provides any progress indication. Progress indication is easy for data transfer (see e.g. web), but for computation it is quite tricky. It would require that the programmer of a method puts progress indicators into the algorithm (easy when the method just consists of a sequence of simple statements, complex in all other cases). Additional problem for progressive, partial extract: it is not applicable to legacy code. Also: how does the wrapper and the server work together? call-backs, direct access by serverto parameter table in wrapper, or additional methods in server that wrapper can call when an examine comes in? -- Dorothea Beringer Stanford University beringer@db.stanford.edu http://www-db.stanford.edu/people/beringer.html --