[Rd] Just-in-time compiler for R

[Stephen Milborrow]

Greetings R developers!

I have been working on a just-in-time compiler for R arithmetic expressions.
An example:


jit(1)   # turn on just-in-time compilation
for(i in 1:na)# example convolution code
for(j in 1:nb)
  ab[i + j] <- ab[i + j] + a[i] * b[j]


The loop will run about 30% faster. That's not much of a speedup, but the
code is still in early development and the figure will get much better.

If you are interested there is more information at
www.milbo.users.sonic.net/ra.




Stephen Milborrow
www.milbo.users.sonic.net

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[Rd] Just-in-time compiler for R

[Stephen Milborrow]

There is a new version of the just-in-time compiler for R at
www.milbo.users.sonic.net/ra/index.html

With just-in-time compilation enabled, the convolution example from the
"Extending R" manual now runs about 30 times faster. The web page has more 
information.

Stephen Milborrow
www.milbo.users.sonic.net

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