ucb-art/bag_framework

Berkeley Analog Generator (BAG) version 2.0 and later.

BAG 2.0 is a complete rewrite of BAG 1.x (which is in pre-alpha stage and never released publicly).

(Very outdated) Documentation and install instructions can be found at http://bag-framework.readthedocs.io/en/latest/

A tutorial setup is available at https://github.com/ucb-art/BAG2_cds_ff_mpt.git/

bag_framework's Issues

Contributor discussion forum for BAG development?

It would be very nice to have a BAG-related communication platform that would work as a channel to bring up questions, problems, and different views to BAG an BAG development on top of the github issues.

Integrating Other Design Enviroment

I'm going to start looking at using the BAG framework with another design environment (ie. not Cadence), probably Xic (https://github.com/wrcad/xictools).

I understand this is likely to be a major undertaking but I was hoping you would be able to provide any tips and pointers before I just start diving into the code base.

Thanks in advance for any help you could provide.

https://github.com/ucb-art/BAG_framework/blob/master/run_scripts/start_bag.il

Hi,
Is there any example tutorial to use these skill procedures?
It would be handy to understand the procedures as these get used directly by BAG.

PrimitiveBase

This is more like an heads up than an issue that would fit better into the proposed discussion forum than here, but I'll bring it up anyway.

With one of my students I'm ramping up a project where we will set up a BAG layout generators to use vendor specific device generators and the build kind of a version of AnalogBase around that. This simplifies the process definition and porting the designs from one process to another. Device generators is the easiest way to provide DRC clean and relatively well characterized devices, and current process setup basically requires re-write of those generators.

Naturally there is a need for hacking possibility too, but device generator based process definition would in my opinion lower the hreshold to take BAG into use. Let me know if you share interest to do this.

Maestro Support

Have you considered adding support for using a Maestro view instead of an ADEXL view?

add unit_mode parameter to object's move_by

This would resolve the issue in BerkeleyPhotonicsGenerator/BPG#167.

Problems with asyncio event loop already running

I ran into an issue with ayncio and had to apply this change to get the following error to go away:

/software/public/anaconda/3.8.3/lib/python3.8/asyncio/base_events.py in _check_running(self)
550 def _check_running(self):
551 if self.is_running():
--> 552 raise RuntimeError('This event loop is already running')
553 if events._get_running_loop() is not None:
554 raise RuntimeError(

RuntimeError: This event loop is already running

Added this to the top of the file: BAG_framework/bag/concurrent/core.py
import nest_asyncio
nest_asyncio.apply()

I had to install nest_asyncio package from: https://pypi.org/project/nest-asyncio/#files

updated documentation and cybag_oa details

I wanted to ask if there are more up-to-date/complete documentation for the BAG_framework
and additionally documentation related to the sub-module cybag_oa

is there a forum for BAG users to exchange information

Thanks,
Fahmy

Openness of cybagoa

BAG framework uses cybagoa submodule to speed up the interface to Virtuoso. To compile it, a OpenAccess API header file is required. Tha access OpenAccess API is controlled by SI2 http://www.si2.org/
Companies pay yearly fee for SI2 membership, so regardless of the name, Open Access is not that open.
Instead of everyone of us contacting SI2, does BAG community know if there a way to get those header files from:

1. Within university or other nonprofit organization
2. Individual open source developer.
   Any suggestions how we should arrange this?

Mapping to new PDK

Hi all,
I am trying to map BAG to tsmc65 nm but I failed to pass DRC and I still have some other issues.
Where you able to map the BAG to new PDK?
if yes kindly let me know and any help is really appreciated.
I followed instructions in https://bag-framework.readthedocs.io/_/downloads/en/stable/pdf/ but still something missing.

Conda Forge Package

It would be great if the BAG framework was available on conda-forge. Would you mind if I created a recipe and submitted it to conda-forge?

In the instructions you say the easiest way to get started is with Anaconda, so it would be great if it was available as a conda package from the conda-forge channel.

Here are some instructions for how to create a conda-forge feed-stock which will build the conda package.
https://conda-forge.org/docs/maintainer/adding_pkgs.html#creating-recipes

I also have some suggestions on how to include the SKILL code so that it is loaded from the active conda environment automatically when you start Cadence Virtuoso. I can include that as part of the conda recipe.