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JulianKemmerer / PipelineC

A C-like hardware description language (HDL) adding high level synthesis(HLS)-like automatic pipelining as a language construct/compiler feature.
https://github.com/JulianKemmerer/PipelineC/wiki
GNU General Public License v3.0
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Make cache of pipelined basic operations #145

Closed JulianKemmerer closed 1 year ago

JulianKemmerer commented 1 year ago

ex. pipeline_period_cache/vivado/xc7a35ticsg324/syn/BIN_OP_EQ_uint32_t_uint32_t_0.75.delay

Largest stage determines the functional 'sliced at point' percentage.

Very similar to existing path_delay_cache except with an added 0.75 to name meaning like 'sliced at the 75% point' ~= inverse 1/0.75 = 1.33 stage pipeline

I think it helps with faster estimates https://github.com/JulianKemmerer/PipelineC/issues/46

And also can help for searching to get to a specific fmax goal https://github.com/JulianKemmerer/PipelineC/issues/48

Planned to work well modeling @suarezvictor is doing too

JulianKemmerer commented 1 year ago

As discussed above there is a now a directory with cached minimum period delays observed for pipelined low level funcs like in path delay cache

It will need to be built up through experiment or simply over time as designs go through the tool...

https://github.com/JulianKemmerer/PipelineC/commit/ecbe94a726c9c27928cbe8b2bbe1224e9c534904

JulianKemmerer commented 1 year ago

@suarezvictor can be free to experiment with this by running the tool locally - I will try to get generate some cached numbers myself too as I have time

suarezvictor commented 1 year ago

good progress! it would be much better if you can just upload the data