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PureBytes Links
Trading Reference Links
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each bar takes about 40 bytes of data... work forward from that.
--- In amibroker@xxxxxxxxxxxxxxx, "Boris" <borisamibroker@xxx> wrote:
>
> Hi Thomas,
> but how much ram needs one symbol?
> If I have 4 MB cache then I make a guess.
> The price is 3 digits plus dot plus 2 digits. Say 6 digits.
> e.g. 233.12$. The symbolname is e.g. 12 for ISIN.
> So 4(o,h,l,c) * pricedigits * days(252eod*years) * amountOfSymbols + symbolDigits <= cache (e.g.4mb)
> So how many 10 year symbols can I run in a 4 mb cache?
> amountOfSymbols = 4194304 / (4 * 6 * 252 * 10 + 12) = 69 symbols.
> Ups!
> Is that correct?
> Boris
> --- In amibroker@xxxxxxxxxxxxxxx, Tomasz Janeczko <groups@> wrote:
> >
> > Hello,
> >
> > You guys still do not understand that limiting factor is _not_ CPU, but
> > MEMORY speed.
> > SINGLE core is able to fully saturate RAM memory bandwidth and this is
> > exactly what
> > is happening if you are using anything more than 8MB of data that is the
> > size of on-chip cache.
> >
> > Best regards,
> > Tomasz Janeczko
> > amibroker.com
> >
> > On 2010-03-14 19:33, Steve Dugas wrote:
> > > Hi - I am guessing that your computer is multi-core? AB is not written for
> > > multi-threaded optimization - I have a quad-core, 1 instance of AB uses 25%
> > > of total CPU power so I run 4 instances side-by-side when optimizing to keep
> > > the CPU maxed out. I don't think I have heard of a 6-core machine but 16%
> > > CPU usage sounds like maybe 6 cores? Anyway, you can run multiple
> > > instances, OR you should also check out Fred's MCO program in the files
> > > section which he wrote for maximizing use of multiple cores and even
> > > multiple computers.
> > >
> > > Steve
> > >
> > > ----- Original Message -----
> > > From: "liveyourdream4ever"<frankhassler@>
> > > To:<amibroker@xxxxxxxxxxxxxxx>
> > > Sent: Saturday, March 13, 2010 5:27 AM
> > > Subject: [amibroker] AB 5.29, Windows 7 (64bit) and i7
> > >
> > >
> > >
> > >> Hello,
> > >>
> > >> i'm running AB 5.29 on W7(64bit) with a i7 CPU. When using the optimizer
> > >> the i7 CPU isn't really busy, only up to 16%.
> > >>
> > >> Has anyone experience with such an environment?
> > >> What can i expect in terms of CPU load factor?
> > >>
> > >> Thanks for your response.
> > >>
> > >>
> > >>
> > >> ------------------------------------
> > >>
> > >> **** 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
> > >>
> > >>
> > >>
> > >>
> > >>
> > >
> > >
> > >
> > > ------------------------------------
> > >
> > > **** 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
> > >
> > >
> > >
> > >
> > >
> >
>
------------------------------------
**** 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/
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