Next: Debugging Session.
Up: Permutation
Previous: Permutation
In examining an execution
history graph from the 512 process system, we first tried to match the
expected pattern for a permutation (that is, a Write followed by a Read
on each process). The pattern was not found and we were told that only
processes with PIDs less than 256 completed their W R chain. In
examining the behavior of the remaining processes, we discovered that
all of the processes wrote their values to the lower 256 processes.
This pointed us to an error in the address calculations.
Joydip Kundu kundu@neweng.enet.dec.com