[Gems-users] Network Destination generation problem in Garnet NI

[Jianchen Hu <hujc.thu@xxxxxxxxx>]

Hi,

I use Garnet network tester to run with random traffic. And when I try a large network (128-node), the network interface will generate multiple transaction for the same message. I use MOESI_SMP_directory protocol and I think all the messages should be unicast, like the case of 32-node or 64-node network.
But in a 128-node network with CROSSBAR topology, the NI will generate 2 transactions for the same message to the same destination. (dest_nodes.size() == 2) So I got double flit count.
Is it a bug in Garnet or I miss something ?

Thanks.
Jianchen Hu