set the channel description: Fault (OS DFT toolchain) discussion

Hi @User please ask your question here

Hi I am trying 'Fault' by using its docker image but could not find the following file in the repository.

RTL/ISCAS_89/s27.v

I found this particular file here and moved it to the RTL directory. https://github.com/Cloud-V/Fault/tree/master/Benchmarks/ISCAS_89 But later on I also could not find the following "An example json file could be found at s27.v.tv.json" Actually the link is broken. Hence stuck at

fault --tvSet RTL/ISCAS_89/s27.v.tv.json Netlists/s27.netlist.v.cut.v

It would be great if I can get help on this. Regards,

The wiki needs an update sorry about that. For now until I work on it , you can get this file from here https://github.com/Cloud-V/Fault/blob/432adf445acef670fed994950fcf92c8cf8cfefa/RTL/ISCAS_89/s27.v.tv.json

Hi @User I am converting my question into two parts: 1 -I tried to use the specified file in your last message but the following message is showing up on the terminal.

enerating LALR tables

WARNING: 183 shift/reduce conflicts

Processing module s27\u2026

File 'RTL/ISCAS_89/s27.v.tv.json' is invalid.

I have cloned the latest repository and followed the steps given in wiki's 'Usage' part. https://github.com/Cloud-V/Fault/wiki/Usage 2- The given command for JTAG port insertion also producing the following error.

Generating LALR tables

WARNING: 183 shift/reduce conflicts

Creating top module\u2026

Stitching tap port...

Syntax error

Fatal error: 'try!' expression unexpectedly raised an error: Python exception: :8: before: library

Traceback:

File "/usr/local/lib/python3.6/dist-packages/pyverilog/vparser/parser.py", line 2296, in parse

ast = codeparser.parse()

File "/usr/local/lib/python3.6/dist-packages/pyverilog/vparser/parser.py", line 2274, in parse

ast = self.parser.parse(text, debug=debug)

File "/usr/local/lib/python3.6/dist-packages/pyverilog/vparser/parser.py", line 77, in parse

return self.parser.parse(text, lexer=self.lexer, debug=debug)

File "/usr/local/lib/python3.6/dist-packages/pyverilog/vparser/ply/yacc.py", line 265, in parse

return self.parseopt_notrack(input,lexer,debug,tracking,tokenfunc)

File "/usr/local/lib/python3.6/dist-packages/pyverilog/vparser/ply/yacc.py", line 1047, in parseopt_notrack

tok = self.errorfunc(errtoken)

File "/usr/local/lib/python3.6/dist-packages/pyverilog/vparser/parser.py", line 2246, in p_error

self._coord(p.lineno))

File "/usr/local/lib/python3.6/dist-packages/pyverilog/vparser/plyparser.py", line 55, in _parse_error

raise ParseError("%s: %s" % (coord, msg))

: file /share/Fault/.build/checkouts/PythonKit/PythonKit/Python.swift, line 602

Current stack trace:

0    libswiftCore.so                    0x00007f1d53268ea0 swift_reportError + 50

1    libswiftCore.so                    0x00007f1d532d9f40 _swift_stdlib_reportFatalErrorInFile + 115

2    libswiftCore.so                    0x00007f1d531fdeee <unavailable> + 3514094

3    libswiftCore.so                    0x00007f1d531fe067 <unavailable> + 3514471

4    libswiftCore.so                    0x00007f1d52ff37cd <unavailable> + 1374157

5    libswiftCore.so                    0x00007f1d531d4e48 <unavailable> + 3345992

6    libswiftCore.so                    0x00007f1d5302b741 <unavailable> + 1603393

7    fault                              0x00005644228eb09a <unavailable> + 1650842

8    fault                              0x000056442285e336 <unavailable> + 1073974

9    fault                              0x000056442286bcb3 <unavailable> + 1129651

10   fault                              0x000056442286bea1 <unavailable> + 1130145

11   fault                              0x0000564422882fd0 <unavailable> + 1224656

12   fault                              0x000056442286b943 <unavailable> + 1128771

13   libc.so.6                          0x00007f1d510edab0 __libc_start_main + 231

14   fault                              0x000056442277760a <unavailable> + 128522

Illegal instruction (core dumped)

I came across this tool while I was searching for opensource tool for DFT. Does Fault support libraries other then Osu35 e.g. Sky130A etc.?

Applying DFT to the

user_proj_example

in Caravel is giving a lot of routing congestion even after increasing the die area and target density. Any idea how to get rid of those routing congestions?

@Sashank Krishna S has left the channel