On Saturday, 20 September 2014 at 07:25:45 UTC, Russel Winder via
Digitalmars-d-learn wrote:
On Sat, 2014-09-20 at 06:46 +0000, "Nordlöw" via
Digitalmars-d-learn
wrote:
On Thursday, 18 September 2014 at 19:49:00 UTC, Atila Neves
wrote:
> I had to roll my own parallel map today, but at least I did
> get a nice 3x speedup.
How many cores? Is the problem a data parallel one and hence
should show
linear speedup?
It depends on the data. I was running analysis on a build
dependency graph. It'd depend on the dependency tree topology. I
have 4 cores with hyperthreading. 3x speedup seems good to me,
especially since the implementation is recursive.
Is your own parallel map public somewhere? It would be
interesting to see it.
Particularly if it can be used to improved the code in
std.parallelism.
Now that I looked at the bug id referenced above, I don't think
it'd help. I can see all sorts of problems with guaranteeing no
mutable references are captured by the delegate.
Atila
