Message:

Cell name: the power ring for net name only contains value shapes that are within value microns of the boundary. There must be at least four shapes within this distance. This is determined using the shape closest to the cell boundary. See Customizing Pin Shapes in Standalone Abstract Generator.

Message:

There are no power and ground rails common to all cells in the current bin. Use the Power Rail Widths and Offsets option to specify the characteristics of the power and ground rails for the bin. You might also need to redistribute cells into separate bins to complete this step.

Message:

Cell name: contains non-orthogonal geometry which cannot be modeled. There are value cells with non-orthogonal geometry.

Description:

The design contains one or more cells containing diagonal geometry which Abstract Generator cannot model.

Abstract Generator usually adopts the stair-step coverage method in order to model 45-degree geometry, but this method failed on the named cells. It could be that the intersection of the 45-degree shape and the stair-step is too small to be processed by Abstract Generator.

Troubleshooting:

Increase the size of your stair step and run Abstract Generator again. If the problem persists, consider editing your layout data.

• For information about the stair-step model, see Pin and Blockage Fracturing.
• For information about designing library data for use in Cadence flows, see Appendix D, “Library Design Guidelines.”

Message:

Cell name: terminal name shape name is different from the calculated value value. You can reset shape properties using the Terminal Properties form.

Description:

The shape value calculated for the named terminal is different from the value already stored in the cellview. Abstract Generator is unable to reset the property value.

Message:

Cell name: The blockage type selected for the layer name in the Layer Assignment for the Blockages table is Shrink. However, no value is specified for either Shrink Track or Shrink Dist. If you do not specify a value in either of these columns corresponding to the layer, the abstract generator will use the default value of 2 tracks for creating the blockage. This default value is small and will increase the run time of the Abstract step significantly. If you want to avoid this, you must specify either the Shrink Track or Shrink Dist value or both.

Description:

If you choose the type of blockage you want create on a layer as Shrink in the Blockage column of the Layer Assignment for Blockages table on the Blockage tab (Abstract step), you need to specify a distance value (in microns) in the Shrink Dist field. Alternatively, you can specifiy a value in terms of the number of tracks between the blockages in the Shrink Track field. Abstract Generator combines blockages that are within the specified distance from each other or are separated by the specified number of tracks by filling the space between them with more blockage.

If you specify both Shrink Track and Shrink Dist, the values are added and blockages separated by a distance less than or equal to the total distance are merged. If you do not supply a distance, Abstract Generator uses a default value of 2 tracks and displays this warning message.

Message:

Cell name: the overlap layer boundary has not been fully enclosed by the prBoundary. Check that the correct layers have been specified in the Using geometry on layers field.

Description:

There is geometry on the overlap layer which extends beyond the place-and-route boundary.

Message:

Cell name: no overlap layer shapes have been generated. Check that the layers have been specified in the Using geometry on layers field. See Retain Layout Information in the Abstract View.

Message:

Cell name: has more than one overlap shape generated. Check the layers specified in the Using geometry on layers field and the abstract view.

Description:

The geometry you supplied in the Using geometry on layers field in the Overlap tab has led to the tool creating more than one shape for the overlap layer.

This error might also appear if the shapes to be considered for creating the overlap boundary exist on the boundary purpose, whereas only the layer(s) is specified in the Using geometry on layers field.

Troubleshooting:

Set the Smooth factor to apply to be greater than the distance between the shapes on the overlap layer and rerun Abstract Generator. This forces the tool to create a single shape. See Retain Layout Information in the Abstract View.

To include shapes on the ignored boundary purpose, do one of the following:

• Explicitly include the purpose in the geometry specification in the Using geometry on layers field.
  For example, if you want the boundary shapes on M1 to be included in the overlap boundary creation, specify the following in the field instead of just M1:
  (M1 boundary) M1
• Remove boundary from the Ignored Purpose(s) field on the General tab (File – General options).
  Since this is a global , updating the Ignored Purpose(s) field in this way will affect all layer definitions. Therefore, choose this alternative only after due consideration.

Message:

Cell name: net name has preset pin geometry which violates minimum area rules. You may want to option re-run the Extract step after ensuring that the Extract signal nets and Extract power nets options are turned on to create the correct geometry.

Description:

Because full geometry is not being performed, Abstract Generator has created a pin that does not satisfy the minimum area rules set for the layer in the technology file. See Select the Extract power nets option to run connectivity extraction for power nets.

Message:

Cell name: net name has boundary pin geometry which violates the minimum area rules. The Create boundary pins option has created pins that do not satisfy the minimum area rules in the technology file. You can inactivate the Create boundary pins option and rerun the command.

Message:

Cell name: net name has full shape pin geometry that violates the minimum area rules set in the technology file.

Description:

The pin geometry for a given layer must satisfy the minimum area rules defined for that layer in the technology file. If full geometry extraction is performed, and the pin still does not satisfy minimum area rules, it indicates a significant problem in the layout design.

Message:

Cell name: geometry has been found abutting or extending past the prBoundary. As a result, the Create boundary pins option has been disabled.

Description:

Because there is some geometry other than labels, power shapes, or abutments which extends beyond the place-and-route boundary, the Create boundary pins option has been disabled automatically. This indicates that there is a problem with the layout design.

Message:

Cell name: Trying to create a blockage on layer layerName. This layer does not have boundary purpose in the technology data.

Description:

This error message is issued when you try to add blockage(s) on a layer that does not have a purpose defined in the technology file.

Troubleshooting:

Use the Technology File Manager to define the missing LPPs in the techLayerPurposePriorities section of the technology file. Also see ABS-10050.

Message:

Cell name: An internal error occurred while performing metal density calculation. Additional information.

Troubleshooting:

This is an uncommon error message. Look for warning messages received prior to recieving this error message and try to resolve the problem. If you get stuck, contact Cadence support with the problem testcase.

Message:

Cell name: An internal problem occurred while performing metal density calculation for the layer name. Additional information.  

Troubleshooting:

This is an uncommon error message. Look for warning messages received prior to recieving this error message and try to resolve the problem. If you get stuck, contact Cadence support with the problem testcase.

Message:

Cell name: Density data will not be calculated for the non-metal layer layer name.

Description:

This warning message appears if you are using the Layer Assignment for Metal Density Regions table on the Density tab for density calculation and have specified a non-metal layer in the table. Abstract Generator will ignore the non-metal layer for density calculation.

Message:

Cell name: You are calculating metal density for the layer name layer. The technology file does not have a minimum density rule for this layer.

Description:

This warning message appears when you try to calculate density for a metal layer for which no minimum density rule has been defined in the technology file. In the absence of the minimum density rule for the metal layer, the density information generated would not be useful.

To add minimum density rule for a metal layer in the technology file, see Virtuoso Technology Data ASCII Files Reference.

Message:

Cell name: PR boundary is not rectilinear. Edges at non-orthogonal angles will be approximated to larger rectangular shapes, which might overlap other such rectangular shapes. Stair step approximation is currently not supported.

Description:

Metal density calculations are based on the dimensions of rectangular density windows. However, when the edges of a PR boundary are non-orthogonal, Abstract Generator will extrapolate the shape to the closest possible rectangle. The resulting rectangular shape encloses regions outside the PR boundary and can overlap other such approximated rectangles.

Troubleshooting:

Check the generated abstract to ensure that it meets the required guidelines.

Message:

Cell name: does not have a valid PR boundary. The bounding box of the cell view will be used to generate density window(s).

Description:

Reconsider the values selected for the Create boundary and Create overlap boundary options on the Boundary tab (Pins step) and Overlap tab (Abstract step), respectively, to obtain a valid PR boundary for the cell.

Message:

Cell name: Site pattern for the gate-array cell name cannot be calculated because it contains an instance of the Pcell name. Site pattern calculation for Pcells is not supported.

Message:

Cell name: Site pattern for the gate-array cell name cannot be calculated. The gate-array cell contains an instance of the sub-cellview name, which itself is associated with a site array.

Description:

The gate-array cell contains an instance of the sub-cellview name, which itself is associated with a site array.

Message:

Cell name: The sub-cellview name is mapped to the site name in the Sub-Cellview to Site Mapping table. However, this sub-cellview is already option attached to the site name. The mapping entry specified in the table will be ignored.

Description:

The sub-cellview’s association to a site is different from what is specified in the Sub-Cellview to Site Mapping table on the Site tab. Therefore, the mapping entry specified in the table will be ignored.

Message:

Cell name: Site pattern for the gate-array cell name cannot be calculated. The gate-array cell contains an instance of the sub-cellview name, which is not mapped to a site in the Sub-Cellview to Site Mapping table. Ensure that the sub-cellview to site mapping is defined in the Sub-Cellview to Site Mapping table on the Site tab.

Message:

Cell name: Site pattern for the gate-array cell name cannot be calculated. The site name mapped to the gate-array cell name in the Sub-Cellview to Site Mapping table does not exist. Ensure that the site to which the sub-cellview is mapped is either predefined or already exists.