Method and apparatus for relocating design modules while preserving timing closure
View Patent ↗A method for designing a system on a target device includes generating a solution for the system. A solution for a module of the system identified by a user is preserved. The preserved solution for the module is implemented at a location on the target device identified by the user.
1. A method for designing a system on a target device, comprising:
identifying displacement options for a module of the system;
translating a solution for the module in response to a displacement option selected by a user; and
implementing the solution into a design of the system.
2. The method of claim 1 , wherein identifying the displacement options for the module of the system comprises identifying other locations on the target device having resources similar to that of an area having a selected location and size on the target device.
3. The method of claim 2 , wherein identifying other locations on the target device comprises looking up predetermined locations having resources similar to those in the area on a table.
4. The method of claim 1 , wherein identifying the displacement options for the module of the system comprises identifying other locations on the target device having resources similar to that of an area having a selected location and size on the target device and capable of performing a function within a selected timing variation.
5. The method of claim 1 further comprising displaying the identified displacement options to the user on a graphical user interface.
6. The method of claim 5 , wherein the displacement option is selected by the user by selecting one or more identified displacement options displayed on the graphical user interface.
7. The method of claim 1 , wherein the solution is a placement solution.
8. The method of claim 1 , wherein the solution is a routing solution.
9. The method of claim 1 , wherein translating the solution, comprises:
computing a displacement vector for the module in response to receiving a displacement location for the module;
determining whether any logic elements reside in the module; and
for each logic element residing in the module, identify a location to place the logic element to form a displaced module by applying the displacement vector to a location of the logic element in the module.
10. The method of claim 9 further comprising:
determining whether any wires reside in the module; and
for each wire residing in the module, selecting a routing resource to form the displaced module by applying the displacement vector to a location of the wire in the module.
11. The method of claim 9 further comprising:
determining if a global routing resource resides in the module; and
for each global routing resource residing in the module, connecting the global routing resource to the displaced module.
12. The method of claim 9 further comprising:
determining if a clock spine resides in the module;
for each clock spine residing in the module, connecting the clock spine to the displaced module if the clock spine is within a predetermined distance from the displacement location; and
if the clock spine is outside the predetermined distance, connecting the displaced module to a nearest clock spine.
13. The method of claim 9 further comprising:
identifying the displacement options for the module of the system; and
implementing the solution into the design of the system.
14. The method of claim 13 , wherein identifying the displacement options for the module of the system comprises identifying other locations on the target device having resources similar to that of an area having a selected location and size on the target device.
15. The method of claim 14 , wherein identifying other locations on the target device comprises looking up predetermined locations having resources similar to those in the area on a table.
16. The method of claim 13 , wherein identifying the displacement options for the module of the system comprises identifying other locations on the target device having resources similar to that of an area having a selected location and size on the target device and capable of performing a function within a selected timing variation.
17. A non-transitory computer readable medium including a sequence of instructions stored thereon for causing a computer to execute a method for designing a system on a target device, comprising:
identifying displacement options for a module of the system;
translating a solution for the module in response to a displacement option selected by a user; and
implementing the solution into a design of the system.
18. The non-transitory computer readable medium of claim 17 , wherein identifying the displacement options for the module of the system comprises identifying other locations on the target device having resources similar to that of an area having a selected location and size on the target device.
19. The non-transitory computer readable medium of claim 18 , wherein identifying other locations on the target device comprises looking up predetermined locations having resources similar to those in the area on a table.
20. The non-transitory computer readable medium of claim 17 , wherein identifying the displacement options for the module of the system comprises identifying other locations on the target device having resources similar to that of an area having a selected location and size on the target device and capable of performing a function within a selected timing variation.