Awesome. Thanks.
--- In [email protected], "Mike" <sfclimb...@...> wrote:
>
> I believe that it is up to 4GB *per* 32 bit application instance (i.e. 2 to
> the power of 32 bytes).
>
> Further, I believe that 64 bit applications can use pretty much unlimited
> memory (i.e. up to 2 to the power of 64 bytes, which is more than you'll ever
> fit on a board).
>
> e.g. assuming 16GB machine,
> 1st instance of 32 bit AB gets up to 4GB
> 2nd instance of 32 bit AB gets up to 4GB
> 64 bit Excel gets up to total memory (16GB)
>
> Mike
>
> --- In [email protected], "ozzyapeman" <zoopfree@> wrote:
> >
> > Thanks.
> >
> > If I run some simultaneous apps (AmiBroker, TWS, Firefox, email, Excel,
> > other possible trading apps) will memory over 4GB be of any practical
> > benefit? Or is 4GB the practical useful max on 64-bit Vista?
> >
> >
> > --- In [email protected], "Mike" <sfclimbers@> wrote:
> > >
> > > Based on Tomasz's reply to an earlier thread, 32 bit AmiBroker running on
> > > 64 bit OS will use up to 4GB RAM.
> > >
> > > http://finance.groups.yahoo.com/group/amibroker/message/135524
> > >
> > > However, if your particular backtest does not require that much memory,
> > > the extra RAM will not get used and thus be of limited value.
> > >
> > > Mike
> > >
> > > --- In [email protected], dingo <waledingo@> wrote:
> > > >
> > > > Yes, they seem to have 4 processors and with hyperthreading you get 8 .
> > > >
> > > > BTW - i've seen some posts here that claim they are running 32 bit AB
> > > > on 64
> > > > bit op system. You might look into that - it would allow you to get a
> > > > bit
> > > > bigger machine for the future.
> > > >
> > > > Also the SSD would be overkill imho - since AB cache's most of the data
> > > > in
> > > > memory.
> > > >
> > > > d
> > > >
> > > > On Wed, Mar 11, 2009 at 12:46 PM, ozzyapeman <zoopfree@> wrote:
> > > >
> > > > > Thanks. I was looking into i7 based-PCs. But aren't all i7's
> > > > > quad-cores to
> > > > > begin with? And apparently the OS sees an i7 as 8-core due to the way
> > > > > it's
> > > > > designed.
> > > > >
> > > > > Dell seems to have a good deal on i7 XPS desktops at 2.93 Ghz
> > > > >
> > > > >
> > > > > --- In [email protected], dingo <waledingo@> 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@> 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 [email protected], "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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> > > > >
> > > > >
> > > > >
> > > > > ------------------------------------
> > > > >
> > > > > **** IMPORTANT PLEASE READ ****
> > > > > This group is for the discussion between users only.
> > > > > This is *NOT* technical support channel.
> > > > >
> > > > > TO GET TECHNICAL SUPPORT send an e-mail directly to
> > > > > SUPPORT {at} amibroker.com
> > > > >
> > > > > TO SUBMIT SUGGESTIONS please use FEEDBACK CENTER at
> > > > > http://www.amibroker.com/feedback/
> > > > > (submissions sent via other channels won't be considered)
> > > > >
> > > > > For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
> > > > > http://www.amibroker.com/devlog/
> > > > >
> > > > > Yahoo! Groups Links
> > > > >
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> > > > >
> > > > >
> > > >
> > >
> >
>
