The initial sum can be seen as the number of inevitable communication operations: a processor must either send or receive at least one data word
if it occurs in a column.
The statistical decoder receives long series of variable-length symbols from memory as a sequence of 32-bit data words
The consumer entity sends acknowledgment, selective acknowledgment, and selective reject messages that inform the producer entity of the current receive window size, the data word
next expected, and the reception (or lack of reception) of out-of-sequence data segments.
Looking at the transactions from the PCIe bus in their deserialized form, as delivered by the PCIe acquisition module and shown in Figure 3, it becomes clear that the PCIe graphics card is indeed receiving the incorrect 13'EF data word