Out Of Memory Exception error in c# programming in array

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Hi dear
I try to load a class 16000 times in my server
myclass[] Class = new myclass[4000,4000]
but when i load it outOfMemoryException will occur.
i programming in c# with XNA library and my operation system is windows server 2012 and my server has 32 gig ram. when that error occur 90% of these 32 gig ram are available.
Please help me.

Posted 25-Sep-13 21:30pm

alireza ghasemi

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Sergey Alexandrovich Kryukov 26-Sep-13 3:35am

Help with what? Use less memory. There is no such thing as miracle.
—SA

2 solutions

Solution 1

There is no such thing as miracle. If you don't have enough memory, it's not enough.
It is possible to implement an array of objects using the disk file storage. But I strongly suspect you need to review all your architecture. You did not give us a clue why would you need so many instances of a single class, but I cannot believe you really need to use all of them at the same time.

—SA

Posted 25-Sep-13 21:38pm

Sergey Alexandrovich Kryukov

Comments

Rick van Woudenberg 26-Sep-13 3:50am

Well said. Nothing more to add.

Sergey Alexandrovich Kryukov 26-Sep-13 3:56am

Thank you, Rick.
—SA

CPallini 26-Sep-13 3:59am

5.

Sergey Alexandrovich Kryukov 26-Sep-13 4:09am

Thank you, Carlo.
—SA

alireza ghasemi 26-Sep-13 4:04am

thankyou very much but i want to know why it occur when i have more than 28 gig free ram in mr server.
is there any configuration or setting for defining max usage ram in servers?

Sergey Alexandrovich Kryukov 26-Sep-13 4:08am

I have no idea how big your objects are. And how did you get your RAM usage?
(By the way, how you got it? You should not trust Process Manager.)
Anyway, your OS knows better when the memory is over. It could be over if this is an x86 process. Is that the case?
—SA

alireza ghasemi 26-Sep-13 4:39am

i use x64 os. when i ran my codes i see task manager and i saw that only 10% ( 3.1 gig of 32 gig are usage.

Sergey Alexandrovich Kryukov 26-Sep-13 9:06am

I know, it's obvious from your amount of memory. I'm asking about the process, is it x86 or not?
But even with a 64-bit process: please see Solution 2. One or another reason, but you cannot have you big array...
—SA

alireza ghasemi 27-Sep-13 2:29am

Hi dear
I use XNA framework yesterday i knew my project runs only on x86 mod.
noew i have new question that how can run my project on x64?
I searched thorough internet that in couldnot found any idea about how can I run my pruject on X64.
Please help me.

Sergey Alexandrovich Kryukov 27-Sep-13 3:03am

Compile it to the platform "Any CPU" or the 64-bit architecture your 64-bit system.
—SA

alireza ghasemi 27-Sep-13 3:27am

there are not any choice to select 'any cpu'. there is only x86 mod.

Sergey Alexandrovich Kryukov 27-Sep-13 9:05am

Wait a second. Is the OS 64-bit? And the CPU? What is the CPU architecture?
—SA

alireza ghasemi 27-Sep-13 9:09am

My Os is windows server 2012 X64 enterprise.
my cpu is intel Xeon X7560 2.27 (16 core).

Sergey Alexandrovich Kryukov 27-Sep-13 9:22am

Okay, now, is it a .NET assembly? Can you see project properties? There is a property "Platform". Can you see it?
—SA

alireza ghasemi 27-Sep-13 9:26am

yes it is active(x86)
and in general>> platform target is x86 and there is not x64 or anycore choice.

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CPallini · Accepted Answer · 2013-09-25T21:57:00

Solution 2

My abacus says 4000 * 4000 = 16000000, that is you are trying to create 16 millions instances of your class.
Even on a 64 bit architecture, the CLR as a per object limit of 2GB, see this Stack Overflow question (it provides a workaround): "OutOfMemoryException on declaration of Large Array"[^].

Posted 25-Sep-13 21:57pm

CPallini

Comments

Sergey Alexandrovich Kryukov 26-Sep-13 4:10am

The idea to "do the math" did not even visit my head. Great point, a 5.
By the way, we don't know, maybe the process is x86, executed on WoW64...
—SA

CPallini 26-Sep-13 4:13am

Thank you.