problem with parallel foreach

[Laeeth Isharc via Digitalmars-d-learn]

On Tuesday, 12 May 2015 at 19:10:13 UTC, Laeeth Isharc wrote:
> On Tuesday, 12 May 2015 at 18:14:56 UTC, Gerald Jansen wrote:
>> On Tuesday, 12 May 2015 at 16:35:23 UTC, Rikki Cattermole 
>> wrote:
>>> On 13/05/2015 4:20 a.m., Gerald Jansen wrote:
>>>> At the risk of great embarassment ... here's my program:
>>>> http://dekoppel.eu/tmp/pedupg.d
>>>
>>> Would it be possible to give us some example data?
>>> I might give it a go to try rewriting it tomorrow.
>>
>> http://dekoppel.eu/tmp/pedupgLarge.tar.gz (89 Mb)
>>
>> Contains two largish datasets in a directory structure 
>> expected by the program.
>
> I haven't had time to read code closely.  But if you disable 
> the logging does that change things?  If so, how about having 
> the logging done asynchronously in another thread?
>
> And are you using optimization on gdc ?

Also try byLineFast eg
http://forum.dlang.org/thread/umkcjntsxchskljygcbs@forum.dlang.org#post-20130516144627.000050da:40unknown

I don't know if std.csv CSVReader would be faster than parsing 
yourself, but worth trying.

Some tricks here, also:
http://tech.adroll.com/blog/data/2014/11/17/d-is-for-data-science.html