64位内存不足异常 [英] Out of memory exception on 64bit
问题描述
im正在尝试创建以下数组
im trying to create the following array
int numOfArrays = 50000;
int lengthOfArrays = 13500;
long[,] unsortedNumbers = new long[numOfArrays,lengthOfArrays];
但是我不断遇到内存异常.我的目标是x64，我相信我已经设置了可识别大地址的标志，请参见图片，但我仍然遇到错误.奇怪的是，我在同一程序中有一个列表，它消耗了16gig的ram，没有任何问题.
but i keep getting the out an memory exception. Im targeting x64, i believe ive set the large-address-aware flag, see pic, yet im still getting the error. Odd thing is, i have a list in the same program which consumes 16gig of ram without any issues.
系统:
64gig ram
64gig ram
高清免费提供100Gig.
100gig free on hd.
推荐答案
.NET运行时中32位和64位进程的对象大小都有2Gig限制.
There's a 2Gig Limit on the size of objects in the .NET runtime for both 32bit and 64bit processes.
但是在NET 4.5中，您可以使用gcAllowVeryLargeObjects增加在运行时以64位进程运行的NET代码的限制.
But in NET 4.5 you can increase the limit of NET code which is running on the runtime in a 64bit process with gcAllowVeryLargeObjects.
在以下情况下，您的NET代码将以64位运行:
Your NET code will be running as 64bit if:
- 您的平台目标说"x64"
- 您正在使用NET 4，并且平台目标显示"AnyCPU"，并且您正在64位OS平台上运行
- 您正在使用NET 4.5，并且平台目标显示"AnyCPU" 并且您已取消选择"/取消选中首选32位"，并且您正在64位OS平台上运行
- your Platform Target says "x64"
- you are using NET 4 and your Platform Target says "AnyCPU" and you are running on a 64bit OS platform
- you are using NET 4.5 and your Platform Target says "AnyCPU" and you have "prefer 32-bit" off/unticked and you are running on a 64bit OS platform
您正在分配:
50000 * 13500 * 8 = 5400000000字节= 5.029千兆字节
50000 * 13500 * 8 = 5400000000 bytes = 5.029 gigabytes
如果您不习惯使用NET 4.5，那么根据您的使用情况，您可以改为使用BigArray:
If you don't have the luxury of using NET 4.5 then depending on your usage scenario you may be able to use BigArray instead:
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