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by James Robertson.
Original Post: Smalltalk Solutions Plug of the Day, 7/3/03
Feed Title: Cincom Smalltalk Blog - Smalltalk with Rants
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Feed Description: James Robertson comments on Cincom Smalltalk, the Smalltalk development community, and IT trends and issues in general.
AOStA An Adaptive Optimizing Smalltalk Architecture presentation Eliot Miranda: Cincom Tuesday 2:00:00 pm to 3:30:00 pm
Abstract: AOStA is a portable architecture for adaptive optimization in the context of existing Smalltalk virtual machines. The adaptive optimizer is a bytecode-to-bytecode optimizing and inlining compiler. It is written in Smalltalk, runs in the image, and in a meaningful way is portable across dialects. It runs above a JIT virtual machine with minimal extensions to allow introspection on in-line cache information, to provide simplified "go-faster" versions of certain primitives, and to callback into Smalltalk from "hot spots".
Bio: Eliot Miranda is technical lead for VisualWorks, the direct commercial descendent of Xerox Smalltalk-80, at Cincom Systems, Inc. Eliot has been working on Smalltalk VMs since 1983. Eliot got his degree in Computer Science at the University of York before becoming a research assistant and lecturer at the University of London. During this period he designed and implemented the BrouHaHa bytecode and threaded code VMs which achieved a good compromise of performance and portability through innovative C compiler abuse. After a brief digression collaborating on the Harlequin Dylan implementation, designing the stream and pickling systems he joined ParcPlace Systems in 1995. He designed VisualWorks' threaded interconnect, the programmer-productivity features of the parcel component system and significant performance improvements to the VM, all within the context of a merger, three name changes and a purchase by Cincom in 1999, and can say with some relief that the system is still commercially viable. Eliot has been a member of the ACM since 1988.
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