How Two-Processor Mac Pro access RAM?

Hi All,

I plan to buy used Mac Pro (mid 2010) with 2 processors but I am not sure how Mac manage RAM between these 2 processors. For example, if I have 32GB (8X4GB) RAM with 8 cores (2 quad-core processors) will I be able to access all 32GB per core, or is it 16GB per processor (in which case a core may access max 16GB)?

Thanks