A Concurrent Smalltalk Compiler for the Message-Driven Processor

Horwat, Waldemar

doi:10.21236/ada202182

Cited by 12 publications

(6 citation statements)

References 2 publications

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“…Object location is not a problem novel to aggregates, so we do not focus on it here. The interested reader is referred to [94,58,62].…”

Section: Processing Nodementioning

confidence: 99%

Concurrent Aggregates (CA): An Object-Oriented Language for Fine-Grained Message-Passing Machines

Chien¹

1990

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“…Object location is not a problem novel to aggregates, so we do not focus on it here. The interested reader is referred to [94,58,62].…”

Section: Processing Nodementioning

confidence: 99%

Concurrent Aggregates (CA): An Object-Oriented Language for Fine-Grained Message-Passing Machines

Chien¹

1990

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“…Unlike [Horwat 1989], code is distributed at loadtime. The format of a pointer to a codeblock is shown in Figure 2-2.…”

Section: Codeblocksmentioning

confidence: 99%

“…The low sixteen bits of the descriptor hold the node number, and the high sixteen bits hold the local address, combining to provide a global address. Storing the node number in the low sixteen bits provides an efficiency bonus on the J-Machine as first described in [Horwat 1989 …”

Section: Framesmentioning

confidence: 99%

Dataflow Computation for the J-Machine

Spertus¹

1990

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“…This added serialization is unacceptable for programming massively concurrent hardware. CA is based on the Actor model [4] and is descended from Concurrent Smalltalk (CST) [12,20,19]. Concurrency in CA is derived from asynchronous messages sends and synchronization through context futures.…”

Section: Introductionmentioning

confidence: 99%

Concurrent aggregates: using multiple-access data abstractions to manage complexity in concurrent programs

Chien¹

1991

Proceedings of the Workshop on Object-Based Concurrent Programming

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To program massively concurrent MIMD machines, programmers need tools for managing complexity. One important tool that has been used in the sequential programming world is hierarchies of abstractions. Unfortunately, most concurrent object-oriented languages construct hierarchical abstractions from objects that serialize -serializing the abstractions. In machines with tens of thousands of processors, unnecessary serialization of this sort can cause significant loss of concurrency.Concurrent Aggregates (CA) is an object-oriented language that allows programmers to build unserialized hierarchies of abstractions by using aggregates. An aggregate in CA is a homogeneous collection of objects (called representatives) that are grouped together and may be referenced by a single aggregate name. Aggregates are integrated into the object model, allowing them to be used wherever an object couM be used. Concurrent Aggregates also incorporates several innovative language features that facihtate programming with aggregates. Intra-aggregate addressing aids cooperation between parts of an aggregate. Delegation allows programmers to compose a concurrent aggregate behavior from a number of objects or aggregates. Messages in CA are first class objects that can be used to create message handling abstractions (they handle messages as data). Such abstractions facilitate concurrent operations on aggregates. Continuations are also first class objects. In addition, programmers can construct continuations and use them just like system continuations. User constructed continuations can implement synchronization structures such as a barrier synchronization.We have implemented Concurrent Aggregates and have been using the language since August 1989. We have written a number of significant application programs including a PC board router, a concurrent B-tree, a digital logic simulator, a parallel FIFO queue and a multi-grid solver. More information on Concurrent Aggregates can be found in [10, 11,9].

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A Concurrent Smalltalk Compiler for the Message-Driven Processor

Cited by 12 publications

References 2 publications

Concurrent Aggregates (CA): An Object-Oriented Language for Fine-Grained Message-Passing Machines

Concurrent Aggregates (CA): An Object-Oriented Language for Fine-Grained Message-Passing Machines

Dataflow Computation for the J-Machine

Concurrent aggregates: using multiple-access data abstractions to manage complexity in concurrent programs

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