Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

Failed to route the following 1 signal(s)-- global signals

The device is : cyclone V 5CEFA9F31I7 The quartus version is 13.0 the fitter often failed and report the following message: error (170143): final fitting attempt was unsuccessful ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

--- Quote Start ---

By the looks of the number of clocks you have are stressing the global routing resources of the design.

The Device has 16 GCLK, My design have only used about 9 GCLK.

I don't know why I stressed the global routing resources.

Can I manually constrain the Global signal distribution to guide the fitter? Does it work?