PyMTL4.0 Release #264
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PyMTL4.0 Release #264
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Codecov ReportAttention: Patch coverage is
Additional details and impacted files@@ Coverage Diff @@
## master #264 +/- ##
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+ Coverage 89.18% 90.27% +1.09%
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Files 330 317 -13
Lines 30440 29286 -1154
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- Hits 27147 26438 -709
+ Misses 3293 2848 -445 ☔ View full report in Codecov by Sentry. 🚀 New features to boost your workflow:
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Adding __len__ interface
The pytest_cmdline_preparse hook is now deprecated. I think there should be a way to achieve the same effect using pytest_load_initial_conftests https://docs.pytest.org/en/7.1.x/reference/reference.html#pytest.hookspec.pytest_cmdline_preparse However, were were using this to hook to prevent *.pyc and __pycache__ files from being generated. I think it is fine for now to just go back to generating these files.
Improve index handling in Bits and Signal classes
We were using this in our generated Verilog test bench: always #(`CYCLE_TIME/2) clk = ~clk; But if CYCLE_TIME is an odd integer (say 9) this would result in integer division and round down (i.e., with a cycle time of 9 we would end up with a clock period of 8!). This doesn't matter unless we are doing back- annotated gate-level simulation _and_ we use an odd integer clock period which is why we never detected this bug before. The fix is to simply force floating point division. always #((`CYCLE_TIME*1.0)/2) clk = ~clk;
We were seeing a bug where if you ran a bunch of tests with --dump-vcd PyMTL3 would only dump the VCD for the first test, although every once and a while it would indeed dump VCD files for the every test. This seems to have something to do with the shared library. The cleanest fix seems to be to avoid hard coding the VCD file name in the generated PyMTL wrapper and instead to dynamically get the VCD file name from the metadata.
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This PR includes changes that will be part of the PyMTL 4.0 release. Here is a list of changes included in this PR (WIP):
xdistmodule