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A bit too complex to post an example, but in short I use the Optimizing engine in non intended ways. I optimize over tens of thousands of "variables" that were themselves generated by an earlier optimization algorithm. And during the optimization, I write to an external text file to generate a database of yet more variables. IO tends to give wonky results with all that.
But I do use IO anytime I do 'normal' optimizations, and it's a solid speed-up help.
--- In amibroker@xxxxxxxxxxxxxxx, dingo <waledingo@xxx> wrote:
>
> IMHO - you should do everything you can to be able to run IO. There are ways
> to make discontinuous variables continuous for optimizations. Mind posting
> an example of yours?
>
> d
>
> On Wed, Mar 11, 2009 at 9:33 AM, dingo <dingo@xxx> wrote:
>
> > Intel dual core i7 with fast clock - AB only uses 1 core. 3gig mem. Intel
> > SLC flash (if you've got the money otherwise WD Raptor). Medium video card.
> >
> >
> > d
> >
> > On Wed, Mar 11, 2009 at 12:57 AM, ozzyapeman <zoopfree@xxx>wrote:
> >
> >> I should add that I need to run exhaustive optimizations, as opposed to
> >> CMAE or using Fred's IO, as my variables are discontinuous - not traditional
> >> indicator-type variables.
> >>
> >> In my parallel dream life, I run AB Ultra Professional 7.0 on 8 state of
> >> the art graphics cards, with thousands of processors, 500,000 times faster
> >> than good old AB 5.24.
> >>
> >> But I digress. ;-)
> >>
> >> In the real world, what is the best I can do?
> >>
> >>
> >> --- In amibroker@xxxxxxxxxxxxxxx, "ozzyapeman" <zoopfree@> wrote:
> >> >
> >> > Now that I am just about trading full time, my main PC has become a
> >> dedicated trading computer. That only leaves me with a clunky second PC
> >> (6-years old) for doing offline optimizing. And it's waaay too slow.
> >> >
> >> > So I am in the market for a new PC, and want to get something powerful,
> >> but don't want to overpay for stuff that won't be used. For example, 8GB of
> >> RAM sounds great, but if WinXP only uses 4GB (or 3?) then I imagine the
> >> other 4 GB just goes to waste?
> >> >
> >> > If I plan to use this PC mainly for offline optimizing and backtesting,
> >> what are the recommended specs? I want as much speed as I can possibly get.
> >> My optimizations tend to be humongous, taking days on a quad core.
> >> >
> >> > Any hardware gurus please feel free to chime in:
> >> >
> >> > - RAM?
> >> > - Quad-core vs Eight-core?
> >> > - OS?
> >> > - HD type (flash vs mechanical)?
> >> > - any other hardware/software suggestions for increasing speed?
> >> >
> >> > Thanks!
> >> >
> >>
> >>
> >>
> >>
> >> ------------------------------------
> >>
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> >>
> >>
> >>
> >>
> >
>
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