set_preferred_layers
set_preferred_layers
-layers {s_layerName…}
-hardness {hard|soft}
[ -net s_netName | -set d_setObj ]
Description
Sets the preferred routing layers for the given net or nets in the given set.
Arguments
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-hardness {hard|soft}
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Specifies whether the preferred layers given are hard (required) or soft (requested) constraints. When -hardness hard is used, only the given preferred layers can be used for routing. With -hardness soft, the given layers are preferred for routing but other layers can be used, for example, to avoid congestion.
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-layers {s_layerName …}
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Specifies the preferred routing layers.
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-net s_netName
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Assigns the preferred routing layers to the given net.
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-set d_setObj
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Specifies a set of nets for which to assign the preferred routing layers.
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Examples
The following example sets the preferred layers for the mem_data[14] net.
set_preferred_layers -layers { "met3" "met4" } -net "mem_data\[14\]" -hardness soft
Related Topics
Design Configuration Commands
destroy_unused_netoverride_groups
get_preferred_layers
set_routespec_taper
unset_preferred_layers
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