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$DistributedDefinitions

给出其定义已分配到并行内核的所有符号的列表.

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Details and Options Details and Options
范例  
基本范例  
可能存在的问题  
参见
历史
按以下格式引用：

$DistributedDefinitions

$DistributedDefinitions

给出其定义已分配到并行内核的所有符号的列表.

更多信息

范例

打开所有单元 关闭所有单元

基本范例  (2)

自动分配符号的值：

Wolfram Language code: kid := $KernelID
Wolfram Language code: ParallelEvaluate[kid]
Wolfram Language code: $DistributedDefinitions

分配函数的定义：

Wolfram Language code: f[x_] := 2 * $KernelID
Wolfram Language code: DistributeDefinitions[f]
Wolfram Language code: $DistributedDefinitions
Wolfram Language code: ParallelEvaluate[f[2]]

可能存在的问题  (3)

默认情况下，当前上下文中的符号会自动分配：

Wolfram Language code: mat = RandomInteger[{0, 9}, {2, 2}]
Wolfram Language code: ParallelEvaluate[Inverse[mat]]
Wolfram Language code: $DistributedDefinitions

清除已分配的定义似乎是可行的：

Wolfram Language code: ClearDistributedDefinitions[mat]
Wolfram Language code: $DistributedDefinitions

一旦在并行计算中再次使用 mat，其定义将再次自动分配：

Wolfram Language code: ParallelEvaluate[Inverse[mat]]
Wolfram Language code: $DistributedDefinitions

如果希望手动控制定义的分配，请禁用定义的自动分配：

Wolfram Language code: $DistributedContexts = None;
Wolfram Language code: a = 42;

a 的定义尚未分配到并行子内核：

Wolfram Language code: ParallelEvaluate[Head[a]]
Wolfram Language code: $DistributedDefinitions

手动分配 a 的定义：

Wolfram Language code: DistributeDefinitions[a]
Wolfram Language code: ParallelEvaluate[Head[a]]
Wolfram Language code: $DistributedDefinitions
Wolfram Research (2024)，$DistributedDefinitions，Wolfram 语言函数，https://reference.wolfram.com/language/ref/$DistributedDefinitions.html.

文本

Wolfram Research (2024)，$DistributedDefinitions，Wolfram 语言函数，https://reference.wolfram.com/language/ref/$DistributedDefinitions.html.

CMS

Wolfram 语言. 2024. "$DistributedDefinitions." Wolfram 语言与系统参考资料中心. Wolfram Research. https://reference.wolfram.com/language/ref/$DistributedDefinitions.html.

APA

Wolfram 语言. (2024). $DistributedDefinitions. Wolfram 语言与系统参考资料中心. 追溯自 https://reference.wolfram.com/language/ref/$DistributedDefinitions.html 年

BibTeX

@misc{reference.wolfram_2026_$distributeddefinitions, author="Wolfram Research", title="{$DistributedDefinitions}", year="2024", howpublished="\url{https://reference.wolfram.com/language/ref/$DistributedDefinitions.html}", note=[Accessed: 13-August-2026]}

BibLaTeX

@online{reference.wolfram_2026_$distributeddefinitions, organization={Wolfram Research}, title={$DistributedDefinitions}, year={2024}, url={https://reference.wolfram.com/language/ref/$DistributedDefinitions.html}, note=[Accessed: 13-August-2026]}