Re: [Gems-users] routing algorithm

[Niket <niketa@xxxxxxxxxxxxx>]

Garnet used deterministic dimension ordered (X-Y) routing. In 
RoutingUnit_d.C, there is a look up in the routing table to find out the 
outport port depending on the destination.
The routing tables are populated during configuration time. The 
FileSpecified is read and the minimum path for all source destination 
pairs is found out and stored. RoutingUnit uses a small trick with 
"link_weight" to ensure that X direction links are given higher priority 
than Y.
Just curious, what kind of modifications do you want to make ? I can 
provide you pointers.
Niket


Zhang Yu wrote:
> Hi,
>
> I'd like to make some modification on ruby's routing algorithm. In 
> garnet fixed pipeline model, what routing algorithm is in use by 
> default? If I want to have some change, which file should I look into, 
> RoutingUnit_d.C?
> Thanks,
> Yu
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