Rsyn

Rsyn is an open-source C++ framework for physical synthesis (e.g placement, routing, sizing, buffering, restructuring, etc) research and education. The framework integrates parsers for common academic and industrial formats as Bookshelf, LEF/DEF, Verilog, Liberty, SDC and SPEF. Benchmarks from several EDA contests from ISPD and ICCAD can be easily loaded.

It also includes standard tools as static timing analysis (STA), routing and congestion estimation. A built-in graphics user interface (GUI) is also available.

The netlist data model makes use of the new features of C++11. So it becomes very natural and easy to traverse the netlist.

// Traverse pins in reverse topological order.
for (Rsyn::Pin pin : module.allPinsInReverseTopologicalOrder()) {
	for (Rsyn::Arc arc : pin.allOutgoingArcs()) { /* … */ }
	for (Rsyn::Arc arc : pin.allIncomingArcs()) { /* … */ }

  Rsyn::Net net = pin.getNet();
  if (!net) {
	  std::cout << “Unconnected pin ‘” + pin.getFullName() + “‘\n”;
  } // end if
} // end for 

Objects can be extended via attributes, which internally handle modifications in the netlist.

// Creating a new attribute called “visited” to the nets
Rsyn::Attribute<Rsyn::Net, int> attr = design.createAttribute();

for (Rsyn::Net net : module.allNets()) {
  attr[net] = computeSomething(net); 
} // end for

Rsyn::Net newNet = module.createNet();
attr[newNet] = computeSomething(net);

Index

• Running
• Reference
• Creators
  • Contributors
  • Former Contributors
• Third-Party Projects
• Contact
• License
• Acknowledgement

Running

Rsyn was tested in Ubuntu 16.04.2 LST and compiled with g++ 5.4.0.

$ git clone https://github.com/rsyn/rsyn-x.git
$ cd rsyn-x/x/bin/
$ sudo ../../rsyn/script/install-libs.sh
$ make all 
$ make rgui 

Bash script to install Rsyn dependencies

Opening a design in Rsyn Graphics User Interface:

• File -> Run Script (ctrl+r)
• Go to rsyn-x/x/demo/simple directory
• Open simple.rsyn file
• Rsyn GUI shows the simple circuit

Tip:

• Selecting a cell: shift+left click
• Moving a cell: Keep shift key pressed -> left click on a cell -> move the mouse

Running with command-line mode:

• GUI is not available in command-line mode

$ make rscript script=../demo/simple/simple.rsyn

Reference

Please cite the ISPD 17 paper:

G. Flach, M. Fogaça, J. Monteiro, M. Johann and R. Reis, "Rsyn: An Extensible Physical Synthesis Framework", Proceedings of the 2017 ACM on International Symposium on Physical Design (ISPD), pp. 33-40, Portland, Oregon, USA 2017.

Contributors

Creators

• Guilherme Flach
• Mateus Fogaça
• Jucemar Monteiro

Advisors

• Marcelo Johann
• Ricardo Reis

Contributors

• Henrique Placido
• Isadora Oliveira

Former Contributors

Tiago Reimann, Julia Puget, André Oliveira, Carolina Lima, Felipe Pinto, and Lucas Cavalheiro

Honorable Mention

Renato Hentschke, and Gustavo Wilke

Third-Party Projects

Contact

[email protected]

License

Copyright 2014-2017 Rsyn

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

Acknowledgement

This work is partially supported by Brazilian Coordination for the Improvement of Higher Education Personnel (CAPES) and by the National Council for Scientific and Technological Development (CNPq)