Thunder

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Thunder has tailored by customer driven in terms of performance and easy of use. We expand our solution to huge GDS file handling with state-of-the-art features. Thunder facilitates the huge GDS file process by reducing the time to open and display. Designer is able to find out a most cost-effective specification efficiently by adopting Thunder solution

Thunder layout platform

DB CONSOLIDATION

Thunder consolidates identical via cells and standard cells with hierarchy option to reduce GDS/OASIS file size.

 -Std cell replacement

 -Consolidate identical via

 -Consolidate identical standard cells

IP MERGE

Thunder can open multiple GDSII/OASIS with cross ref-library, merge IPs/designs from different DBU. (Fig 2)

 -Automatic IP merge: name and priority based

 -GUI based interactive IP merge

 -Switch cells from different designs

 -Log/Load switch map

 -Naming option : prefix, postfix, rename only, necessary, name mapping file

 -Skip empty cell

 -Layer option

 -Visible layer only

 -Top layer only

 -Layer map

 

Fig-2.  IP/Design Merge

LVL COMPARISON

Thunder provides fastest hierarchical LVL comparison, less than 30 seconds per GB, with GUI visualization to quickly identify differences of two designs. Customer benchmarks show that Thunder LVL requires minimum runtime memory usage and has linear performance to design size even with big designs (50G+ GDS). (Fig1)

Fig-1. Interactive Layout Comparison

Life Demo for LVL

METAL DENSITY CHECKER

Thunder provides very fast interactive metal density checking with GUI visualization to quickly identify density variations. (Fig3)

 -Fastest, 1M shape per second

 -Generate density colormap

 -Overlapping colormap on layout

 -Check low limit

 -Check high limit

 -Check adjacent difference

Fig-3. Interactive Metal Density Checking

Metal Density Life Demo

MULTIPLE BOOLEAN OPERATIONS

Thunder built-in polygon boolean engine enables Thunder to provide a useful utility for user to handle GDS files. Thunder supports complex MBO (multiple-Boolean-Operations) with simple expression to directly create shapes on original layout. (Fig4)

 -Support Multi-Boolean-Operation(MBO)

 -Use simple MBO expression

   ((L13_P0 SIZING 0.1) AND (L16_P0 NOT L18_P0)) OR (L13_P0 XOR L17_P0)

 -Directly create shapes on layout

 -Generate shapes directly

Fig-4. Interactive MBO

3D LAYOUT VIEWER

Thunder built-in 3D layout view generator is able to render the 3D view on the fly. It also provides cross-probing capability between 3D view port and layout window for easy of analyzing. To visualize the real structure of circuit in terms of process, Thunder provides fluid real time rotation, zooming and navigation. (Fig-5)

 -Display with cross probing

 -Step-by-step tracing

 -Calibre RVE support

 -Display RVE highlight in layout

Fig-5. 3D layout view

3D SHORT LOCATOR

Thunder is able to render the 3D view of the layout on the fly. It also provides cross-probing capability between 3D view and layout window for ease of analyzing. To visualize the real structure of circuit in terms of process, Thunder provides fluid real time rotation, zooming and navigation. (Fig 6)

Fig-6. 3D view shows LVS short-location

CUSTOMIZABLE UI

Thunder increases productivity by providing flexible user interface for user to customize. User is able to not only design the desired menu items but also control the mouse form. (Fig 7)

 -Centralized utilities

 -Multi-language support

 -Support customizable GUI

 -Customizable menu

 -Full document support

Fig-7. scripting to customization UI

NET TRACER

The tracer is able to trace physical net connectivity through the hierarchy, and to find short with routing highlight. The tracing result can be highlighted with 3D view. It enables a global view of any critical paths such that the routing quality can be easily examined. User can further turns on the Short Locator to find out potential short locations. (Fig 8a,8b,8c)

 -Show tracing/short result in 3D display

 -Support find shot with routing highlight

 -Support coordinate/layer based tracing

 -Support text based tracing
 -Dynamically modify connectivity
 -Support stop layer
 -Support area based tracing
 -Save tracing result to GDS

Fig-8a. Mouse Clicking Trace

Fig-8b. Area Trace

Fig-8c. Trace by Text & Find Short Location

HUGE DRC/LVS EXPLORER

The tracer iIt provides seamless integration with industry standard third-party layout verification tools. It helps the user to browse and debug huge DRC/LVS error efficiently (opens 5G+ DRC results in 7 minutes). (Fig 9, Fig 10)

 -Fast

 -Handle very large file: < 1.5 minutes per GB

   User bench mark: open 5G DRC result in 7 minutes

 -Identical shape grouping

 -Calibre Short Isolation Debugging Fast

Fig-9. DRC Viewer

Fig-10. LVS Viewer

DESIGN CONNECTIVITY BROWSER

It helps the user to browse net and instance on huge P&R layout efficiently (Fig 11)

 -DB from OA, LEF/DEF or GDS:

   DB keep inst/net property

 -Rapid Show net and instance

Fig-11. LVS Viewer

HUGE LAYOUT EDITING

Thunder enables user to browse/edit several hundred gigabytes GDS/OASIS on normal machines. Once the DB file is opened, loading and displaying from Thunder database is instant with partial load technology. The memory usage is significantly reduced with database optimization technology.

 -Hierarchy operation: Make cell, flatten cell, EIP
 -Mouse/key in coordinate
 -Support align (snapping)
 -Calibre DRC driven
 -Property viewing/editing

SUPPORTED PLATFORMS

Thunder supports Sun Solaris 8 and 64-bit PC based hardware platforms: Redhat Enterprise 3, 4, and 5, Windows 2000, Windows XP.

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