Let us say I have two memory channels each one with its own 16GB memory module, I suppose the first memory channel will be used when addressing physical memory in the range 0 to 0x4 0000 0000 and the second when addressing physical memory in the range 0x4 0000 0000 to 0x7 ffff ffff. Correct?

Now, I need to have a 2GB buffer with one "writer" and one "reader", the writer writes on half of the buffer (call it A) and, in the meantime, the reader reads on the other half (B). When the writer finishes writing its half buffer (A), signal it to the reader and they swap, the reader starts to read from A and writer starts to write to B.

If I allocate the whole buffer (on two 1GB hugepages) across the two memory channels, one half of the buffer is allocated on the end of first channel while the other half is allocated on the start of the second memory channel, would this increase performances compared to the whole buffer allocated within the same memory channel?