Except LARGE_ADDRESS_AWARE, what else factors will limit C# process memory consumption?

Question

I take over a C# project which loads 3D models into memory, so I need large memory to use. My platform is 64-bit win10, the C# program is 32-bit, and I use visual studio 2013 to develop. My laptop have 8GB memory.

Before I use editbin /largeaddressaware $(TargetPath) to add LARGE_ADDRESS_AWARE flag to the C# program, it could only consume memory approximately 1GB then program throws OutOfMemory exception, after adding LARGE_ADDRESS_AWARE flag, it could consume memory approximately 1.5GB.

I know that using LARGE_ADDRESS_AWARE on 32-bit process running on 64-bit platform, the memory limit is 4GB. I have also read some articles, says because .NET back-end work and memory fragment, the process is not able to really allocate memory to 4GB.

But I think 1.5GB is way too far to 4GB, so I want to ask is there any other factor will cause memory usage limit? Thank you for your answer.

Answer 1

I found the problem finally.
My C# project have some code to detect its memory usage, when it occupy memory over 1GB, it will throw OutOfMemoryException itself. After I comment these code, the program can reach memory usage to 3GB.