From: Daniel Berger <djberg96@...>
Date: 2007-03-13T08:00:08+09:00
Subject: Re: Trying to make Array#collect massively parallel with OpenMP

On Mar 12, 4:02 pm, "Jan Svitok" <jan.svi...@gmail.com> wrote:
> On 3/12/07, Daniel Berger <djber...@gmail.com> wrote:
>
> > Edit array.c and add the rb_ary_acollect function in my OP anywhere
> > above the Init_array() declaration. Add "rb_define_method(rb_cArray,
> > "acollect", rb_ary_acollect, 0);" where all the other method
> > defintions are (near the bottom). Then recompile and install.
>
> > Thanks,
>
> > Dan
>
> Hi,
>
> as I wasn't able to compile 1.8.5-p12 I used the brand new 1.8.6 and
> VS 2005 SP1, XP SP2.
>
> Patch to array.c is included and I added -openmp to CPPFLAGS.

<snip>

> Second run without assignments:
>
> W:\projects\ruby\ruby\ruby-1.8.6\win32>bench_collect.rb
>                                     user     system      total        real
> Array#collect                   6.875000   0.047000   6.922000 (  6.953000)
> Array#acollect
> W:/projects/ruby/ruby/ruby-1.8.6/win32/bench_collect.rb:17: [BUG]
> cross-thread violation on rb_thread_schedule()
> ruby 1.8.6 (2007-03-13) [i386-mswin32_80]

Ouch. I had a feeling it would collapse. Maybe wrapping the relevant
code in RUBY_CRITICAL would work, but that may defeat the purpose,
assuming it even works at all.

Oh, well. It was fun to try at least. :)

Thanks,

Dan