Parallel prefix computation on the q-cube Processor x, 0≤x N₂(x) then u[x] := u[x] Ⓡy endfor
Parallel prefix computation on the q-cube Processor x, 0≤x N₂(x) then u[x] := u[x] Ⓡy endfor
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Explain the code........
![Parallel prefix computation on the q-cube
Processor x, 0≤x<p, do t[x] = u[x] := v[x]
{initialize subcube "total" and partial prefix to own value}
for k=0 to q- 1 Processor x, 0≤x<p, do
get y := t[N(x)]
set t[x] := t[x] y
if x> N(x) then u[x] := u[x] Ⓡy
endfor](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F09b757a0-dcb6-45d9-8124-608147ce23bd%2F9b65968c-62d0-4229-9bbf-2942e267f878%2F98rauxe_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Parallel prefix computation on the q-cube
Processor x, 0≤x<p, do t[x] = u[x] := v[x]
{initialize subcube "total" and partial prefix to own value}
for k=0 to q- 1 Processor x, 0≤x<p, do
get y := t[N(x)]
set t[x] := t[x] y
if x> N(x) then u[x] := u[x] Ⓡy
endfor
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