Compiler crashes with Out of memory message

[Cimteker]

The CVI compiler crashes when I am trying to recompile my project. I am running 8.1.0 (271) version under Windows XP professional with SP2. It start compiling and towards the end, virtual memory goes up quickly to 2GB and I got "Out of memory" message. It usually crashes after that.

Thanks for any ideas.

[Evan P.]

Hi Cimteker,

First, when you say "it crashes", do you mean that LabWindows/CVI crashes and closes, or the compiling process terminates? Also, is this a Windows memory error or a LabWindows/CVI error?

I would try running a very simple project ("Hello, World!" might be appropriate) and see if this out of memory error still occurs during the compiling process.

[Cimteker]

Hi Evanp,

I think it is a CVI message. It will not compile the project, sometimes it will crash (dissapear) other times it will give an out of memory error and once I click OK it will continue, but a few seconds later another error usually appears about an invalid handler. There's a big jump in virtual memory from 300MB to 2.1 GB. I can compile my project OK if I delete half of my code so I think "Hello world" would compile as well. 

[Evan P.]

Cimteker,

It sounds to me like the compiler may actually be finishing its operation and the error is happening at the very beginning of execution. 

Your idea of narrowing down your code to find the problem segment is a good one; I would suggest further isolating code to find out what section is causing the massive amount of memory allocation. Once this is narrowed down to a small segment we will have a better idea what exactly is happening.

Thanks.

[Cimteker]

I am not asking it to execute. I am pretty sure it happens during compilation (build) process. My system has Intel Core 2 Duo, not sure if it makes any difference.

[Evan P.]

I did not know you were only compiling, apologies. I would still try to narrow down the problem code so we can analyze the problem further.

[mvr]

I have seen this behavior.  It has been a while and was with CVI 7.1, but in my case it was also a coding issue, something in a switch statement and the placement of braces, or declaration of a variable.  I wish I had saved the test case, but there are odd code structures that will not generate a syntax error but will cause the compiler to suddenly think that it has consumed 2G of memory.