On 12/27/2023 9:53 PM, Arka Maity via gem5-users wrote:
Hi All,
My ruby configuration instantiates multiple ruby networks, Memtesters, and CHI controllers. When I start, the
simulation, I encounter the following warning.
Warning: flat edge between adjacent nodes one of which has a record shape - replace records with HTML-like labels\n Edge
system_cpu3_data_sequencer_in_ports -> system_cpu5_port\nError: lost system_cpu5_port
system_cpu3_data_sequencer_in_ports edge\n'
warn: failed to generate dot output from <path to dump>/config.dot.
These warnings are preceded by a huge dump of what looks like a part of the
above config.dot file.
When I change the number of Memtesters (instantiated as system.cpu….) The warning disappears. Any ideas, on how to
resolve this? Sorry, I am unable to recreate this issue on a simpler configuration.
This seems to be something deeply technical in dot, a graphviz tool. See this,
for example:
https://forum.graphviz.org/t/why-does-this-link-not-show-up-in-this-graph/258
Since it has to do with the layout of the graph, changing the number of nodes, etc., certainly could affect it. I think
for gem5 purposes, we (you) can probably live with it, just realizing that some edge that is supposed to be there won't
be. The program / script that sets up to call dot might possibly be changed to do some things in a different way to
avoid this, of course.
Hope this helps, at least with understanding what is going on.
Eliot Moss
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