How to avoid heap fragmentation?

Question

I\'m currently working on a project for medical image processing, that needs a huge amount of memory. Is there anything I can do to avoid heap fragmentation and to speed up

Answer 1

If you can isolate exactly those places where you're likely to allocate large blocks, you can (on Windows) directly call VirtualAlloc instead of going through the memory manager. This will avoid fragmentation within the normal memory manager.

This is an easy solution and it doesn't require you to use a custom memory manager.