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Hi Tomasz,
I thought that cache was the most important part for running backtests quickly. What other things will use up non-cache memory? Arrays and indicators in AFL?
Will I definitely need to convert my 5.29 database to 5.22 so that I can use 64 bit AB? What's the best way to do this?
Thanks,
Chris
--- In amibroker@xxxxxxxxxxxxxxx, Tomasz Janeczko <groups@xxx> wrote:
>
> Hello,
>
> You seem to forget that cache is only one of millions places where
> memory is allocated,
> so this single setting does NOT limit total memory used by AB 64-bit.
> In a similar way CPU cache has for example 4MB but this does not mean
> that it is all accessible
> memory - just the opposite.
>
> Best regards,
> Tomasz Janeczko
> amibroker.com
>
> On 2010-01-25 20:17, Christopher wrote:
> > Hello,
> >
> > I just went through all the trouble of installing Windows XP Pro 64 bit edition, and now I realize that I might have a problem. I have been using the latest beta version of 32 bit AmiBroker (5.29.2), but the 64 bit version of AmiBroker is older (5.22). Does this mean that I cannot use the same database with these two versions? A new database format was introduced starting with 5.27 beta which is not backward compatible. Is there a plan to update the 64 bit version of AmiBroker to use the newer database format soon?
> >
> > Also, I just read some posts claiming that the 64 bit version of AB does not allow cache size to be greater than 4GB. Is this still true? What's the point of running 64 bit AB when it can't use more than 4GB of RAM?
> >
> >
> > Thanks,
> > Chris
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