Long Evaluation Time

[ryukau]

Evaluation stage of Faust takes more than 120 seconds on my environment. This triggers Alarm clock and compilation is terminated when using faustbench. Probably there's workaround, however it's nice to reduce evaluation time if possible.

Full output of faust2jaqt. end evaluation indicates 141 seconds.

$ faust2jaqt -t 0 -time -midi -nvoices 1 DigiDrie.dsp

start parser

end parser (duration : 0.18698)

start evaluation

end evaluation (duration : 141.073)

start propagation

end propagation (duration : 6.30136)

start generateCode

	start prepare

		start deBruijn2Sym

		end deBruijn2Sym (duration : 0.136454)

		start L1 typeAnnotation

		end L1 typeAnnotation (duration : 0.172746)

		start Cast and Promotion

		end Cast and Promotion (duration : 0.0653901)

		start simplification

		end simplification (duration : 0.279493)

		start Constant propagation

		end Constant propagation (duration : 0.0178809)

		start L5 typeAnnotation

		end L5 typeAnnotation (duration : 0.101538)

	end prepare (duration : 5.85807)

	start compileMultiSignal

		start prepare2

		end prepare2 (duration : 0.00033021)

	end compileMultiSignal (duration : 0.611087)

end generateCode (duration : 8.27195)
./DigiDrie;

[magnetophon]

I know, and I'm working on it.

I just added build instructions with the workaround to the readme.

[magnetophon]

For tests, you can dramatically speed up the compile by changing:

nrEnvelopes = 2;
nrLFOs      = nrEnvelopes;
nrMacros    = nrEnvelopes * 1;

The evaluation time goes from +/- 300s to +/- 3s

[ryukau]

Thanks for the information. This helps a lot.

[magnetophon]

In one of the last commits, the evaluation time dropped from 80 seconds to 40.

No idea why.

Did that happen for you as well?

[ryukau]

Evaluation time of df17d33 (latest modification to Faust codes) and b77b5b3 (merge of 3D cross-fade) are same on my environment.

[magnetophon]

¯\_(ツ)_/¯