Vectorized garbage collection

Andrew W. Appel; Aage Bendiksen

doi:10.1007/BF00127826

Vectorized garbage collection

Andrew W. Appel
, Aage Bendiksen

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

Garbage collection can be done in vector mode on supercomputers like the CRAY-2 and the Cyber 205. Both copying collection and mark-and-sweep can be expressed as breadth-first searches in which the "queue" can be processed in parallel. We have designed a copying garbage collector whose inner loop works entirely in vector mode. We give performance measurements of the algorithm as implemented for Lisp CONS cells on the Cyber 205. Vector-mode garbage collection performs up to nine times faster than scalar-mode collection-a worthwhile improvement.

Original language	English (US)
Pages (from-to)	151-160
Number of pages	10
Journal	The Journal of Supercomputing
Volume	3
Issue number	3
DOIs	https://doi.org/10.1007/BF00127826
State	Published - Sep 1989

All Science Journal Classification (ASJC) codes

Software
Theoretical Computer Science
Information Systems
Hardware and Architecture

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10.1007/BF00127826

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AB - Garbage collection can be done in vector mode on supercomputers like the CRAY-2 and the Cyber 205. Both copying collection and mark-and-sweep can be expressed as breadth-first searches in which the "queue" can be processed in parallel. We have designed a copying garbage collector whose inner loop works entirely in vector mode. We give performance measurements of the algorithm as implemented for Lisp CONS cells on the Cyber 205. Vector-mode garbage collection performs up to nine times faster than scalar-mode collection-a worthwhile improvement.

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Vectorized garbage collection

Abstract

All Science Journal Classification (ASJC) codes

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