Hi Gabriel, Thank you so much for helping me！ I wanted to build a ring topology in Garnet 3.0, and while I was implementing the routing algorithm I found that packets would form ring dependencies as they were delivered, causing serious congestion problems. In the Standalone protocol, there will be three virtual networks, and the buffers I am referring to are the virtual networks.
To avoid the congestion problem, I grouped the transmitted data into 3 classes, each class of data is transmitted on its own separate virtual network, but due to the limited virtual channels in the virtual network, when the injection rate is particularly high, all virtual channels will be filled with packets and thus cannot be delivered forward. My goal is to set up a bubble (empty virtual channel) to ensure that at least one virtual channel is available in the virtual network, so that packets can keep passing forward and solve the congestion problem. But I don't know how to go about setting up this bubble? Do you know how is to set up a bubble? Regards, Chunfeng gabriel.busnot--- via gem5-users <gem5-users@gem5.org> 于2023年6月27日周二 16:50写道： > Hi Chunfeng, > > Can you be more specific about “the buffer” you are referring to? > > Also, “routing creating deadlock” sounds more like a routing and/or > topology issue than a micro-architecture issue. > > Introducing a bubble as a deadlock avoidance countermeasure sounds like a > slippery option. If you can assert that it is what you need, though, you > should have sufficient knowledge of Garnet to locate the offending buffer > and identify the condition that requires such a bubble to be inserted. Then > you can implement this change yourself in Garnet’s code. Do not hesitate to > ask for help if you are facing issue in the process. > > Regards, > > Gabriel > _______________________________________________ > gem5-users mailing list -- gem5-users@gem5.org > To unsubscribe send an email to gem5-users-le...@gem5.org >
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