Re: Is This a Dumb Idea? paralellizing byte codes

anton@mips.complang.tuwien.ac.at (Anton Ertl) writes:


> Alain Ketterlin <alain@universite-de-strasbourg.fr> writes:
>>I've heard/read several times that byte-code micro-optimizations are not
>>worth the trouble.
>
> Apart from the paper below, which is discussed below, what else?


This is not directly related to the paper I mention later. I was talking
about optimizing bytecode vs. compiler optimizations. I know of no
interpreter doing elaborate static byte-code optimization.


>>https://ieeexplore.ieee.org/document/7054191


> On that I can only say: Not all research papers are trustworthy.
> Catchy titles may be a warning signal.
>
> I did my own measurements on a Haswell (the same CPU they used in the
> paper) and published them in
> <2015Sep7.142507@mips.complang.tuwien.ac.at>
> (<http://al.howardknight.net/?ID=158702747000> for those of you who
> don't know what to do with Message-IDs).
[...]


> |Why are the results here different from those in the paper?
> |1) Different Interpreter 2) different benchmarks.


I'm glad it works for you. For the record: they consider interpreters
for Python, Javascript and CLI, on a fairly broad set of benchmarks. And
they also evaluate (through simulation) branch-predictors that may (or
may not) be included in more recent architectures.


-- Alain.

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