如何複製Chapel中的多個區域設置上的變量

Question

我在想，是否有一種簡單的方法可以在每個區域設置一個全局變量的副本，以便以後每個區域設置都可以直接訪問其本地副本而不是訪問原始變量存儲在locale0中？

感謝

Answer 1

可以使用ReplicatedDist分佈，讓每一個語言環境變量的副本。有一個模塊UtilReplicatedVar來簡化它的使用。

use UtilReplicatedVar; 

var regularInt = 42; 

// rcDomain is declared in UtilReplicatedVar. It maps 
// one int value to each locale 
var repInt: [rcDomain] int; 

// Other types can be replicated as well. Here a 
// heterogeneous tuple containing an integer, 
// real, and complex is replicated 
var repTuple: [rcDomain] (int, real, complex); 

// Assign 42 to the replicated int on all locales 
rcReplicate(repVar, regularInt); 

// Access the local copy of the replicated var. 
// The first form must use 1 as the index. 
repVar[1] = 0; 
writeln(rcLocal(repVar)); 

// Access the local complex component of the tuple 
writeln(repTuple[1](3)); 

// Access a remote copy. 
rcRemote(repVar, remoteLocale);