Comments (4)
The acc_cost
and occ_
members appear to not be used in the maze expansion (against what the comment above this class is saying). We should separate out the per-iteration route info from the maze-expansion route info. Beyond organization, this would reduce the amount of data being stored in the cache during maze expansion and also reduce the number of global variables the maze expansion touches.
This would require creating a new struct to hold this "per-iteration" routing info and would require modifying the RoutingContext to also hold this information:
struct RoutingContext : public Context {
// ...
vtr::vector<RRNodeId, t_rr_node_route_inf> rr_node_route_inf; /* [0..device_ctx.num_rr_nodes-1] */
// ...
};
Perhaps the new type could be named rr_node_per_iter_route_inf
, but I am concerned the name might be too long.
@vaughnbetz What do you think about this change?
from vtr-verilog-to-routing.
@AlexandreSinger As discussed: The occ_
field is read in the connection router (maze expansion) to calculate the congestion cost (Link)
from vtr-verilog-to-routing.
acc_cost is also read during the connection router (maze expansion); it just isn't written during maze expansion.
from vtr-verilog-to-routing.
The PR resolving this issue has been merged into master. Closing this issue. Since the occ and acc_cost are read during the wave expansion, it should be fine to keep them in this struct.
from vtr-verilog-to-routing.
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