[Rcpp-devel] Question on performance

[Dirk Eddelbuettel]

Jordi,

On 22 September 2018 at 09:18, Georgi Boshnakov wrote:
| I don’t see any code going with the revised version, but
| looking at the code coming with the original paper, see  http://economics.sas.upenn.edu/~jesusfv/RBC_codes.zip,
| the following points come up:

All excellent points.  Jordi, you should ask for the code.  It really sounds
like something done either naively, or with a goal in mind.  "Rcpp code is
C++ code" so any "N times" is silly -- setup costs, extra copies, ... etc pp.

We may of course copy at the end from, say, bespoke C++ data structures to
ours.  But for any non-trivial example the cost of that will be well under, say, 1%
while still getting a "many times" speedup over alternative R solutions.  So
a win for most people.  Hence 1444 packages on CRAN using it. Those people
aren't all fools ...

Dirk

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