Long description

There are C P U 1 and C P U 2 placed from left to right and are connected by a common network. Both the C P U have a small vertical block with two partitions in which A is placed at the top and B is placed at the bottom. C P U 2 has a dashed outline of a vertical block. The vertical block of C P U 1 is labeled Shared page and at the bottom of the block, an instruction is labeled Code using variable A. The vertical block of C P U 2 is labeled A and B are unrelated, shared variables that just happen to be on the same page and at the bottom of the block, an instruction is labeled Code using variable B. There is a backward arrow from C P U 2 A partition that points to C P U 1 A partition. There is a forward arrow from C P U 1 B partition that points to C P U 2 B partition.