限制Mathematica内存使用的正确方法? [英] Correct way to cap Mathematica memory use?

问题描述

在32位操作系统中，分配给任何一个程序的最大内存是有限的，Mathematica会优雅地终止内核并返回最大内存分配错误.

Under a 32-bit operating system, where maximum memory allocated to any one program is limited, Mathematica gracefully terminates the kernel and returns a max memory allocation error.

但是，在64位操作系统上，Mathematica将自由使用所有可用的内存并将系统停止运行.因此，限制内存使用量的正确方法是什么?可以将MemoryConstrained与$Pre或CellEvaluationFunction结合使用，但是我不想为此目的捆绑任何一种，或者不得不修改现有用法以合并此功能.

On a 64-bit OS however, Mathematica will freely use all the memory available and grind the system to a halt. Therefore, what is the correct way to cap memory usage? One could use MemoryConstrained combined with $Pre or CellEvaluationFunction but I would rather not tie up either of those for this purpose, or have to modify existing uses to incorporate this function.

是否存在另一种全局限制内存使用的方法，例如内核标志或系统$ Option?

Is there another way to globally restrict memory usage, such as a kernel flag, or system $Option?

推荐答案

在 Mathematica 8中，您可以启动内存看门狗，类似于以下内容:

In Mathematica 8 you could start a memory watchdog, something along the lines of:

maxMemAllowed        = 15449604;
intervalBetweenTests = 1; (*seconds*)
iAmAliveSignal       = 0;
Dynamic[iAmAliveSignal]
RunScheduledTask[
       If[MemoryInUse[] > maxMemAllowed , Quit[], iAmAliveSignal++],      
       intervalBetweenTests];

记住要运行

RemoveScheduledTask[ScheduledTasks[]];

将其禁用.

修改

您可以在退出前发出警报或交互式决定要做什么. 根据要求，这是分配了1.3GB的试用版.除了这台机器，我走得更远.

You may alert or interactively decide what to do before quitting. As requested, here is a trial with 1.3GB allocated. I can't go much further than that in this machine.

maxMemAllowed = 1.3 1024^3; (*1.3 GB*)
intervalBetweenTests = 1; (*Seconds*)
iAmAliveSignal = 0;
leyendToPrint = "";
Dynamic[leyendToPrint]
RunScheduledTask[
  If[MemoryInUse[] > maxMemAllowed, 
   CreateDialog[CancelButton["Max Mem Reached", DialogReturn[]]]; 
   Quit[],
   Print["Memory in use: ", MemoryInUse[]]; 
   leyendToPrint = 
    "Seconds elapsed = " <> ToString[iAmAliveSignal++]], 
  intervalBetweenTests];
IntegerPartitions[320, {15}];

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