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Absolutely agree.
More users would benefit from normal multi core support with a lot
less work.
Also there is nothing to prevent anyone from using the existing API
to offload the calculation if we really want to go to the trouble.
I have to admit that my dabbling with the CUDA API has been very
frustrating. I made the mistake of loading Vista 64 on this system
and the compatibility problems with the CUDA development environment
is a PITA.
--- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko" <groups@xxx>
wrote:
>
> Hello,
>
> As for CUDA, I already investigated it. There are several problems:
> a) memory transfer especially memory write -
> only PCIExpress cards deliver resonable rates
> b) only "top-tier" NVidia cards support CUDA (8x000 series) that
means
> that for example all notebooks not having latest NVidia card are
out.
> The same with all users using VM (virtual machines)
> c) floating point accuracy (FPUS on graphic cores are NOT IEEE
compliant).
>
> Best regards,
> Tomasz Janeczko
> amibroker.com
> ----- Original Message -----
> From: "brian_z111" <brian_z111@xxx>
> To: <amibroker@xxxxxxxxxxxxxxx>
> Sent: Saturday, July 05, 2008 2:19 AM
> Subject: [amibroker] Re: AmiBroker 5.14.0 BETA released
>
>
> >> Too bad that we cant run the calculation on the 64 idle cores in
> >>the
> >> video card using the CUDA api. Now that would be cool.
> >
> > Now, theres an interesting thought!
> >
> > I'll leave the computer department to sort that one out while I
dream
> > up some more applications for all of this power we are going to
have
> > (Tomasz said, from the time I started with AB, that I wanted the
MP3
> > player, and everything else as well, so it looks as if we are now
> > close to having the means to deliver it all, plus some).
> >
> > brian_z
> >
> > --- In amibroker@xxxxxxxxxxxxxxx, "dloyer123" <dloyer123@> wrote:
> >>
> >> Thanks for responding.
> >>
> >> On further testing, it looks like the dll is only passed the
> > partial
> >> array, implying that dll's will also get the benifit of having
less
> >> data to process.
> >>
> >> I am hoping to cache partial results in my dll to avoid
> > recalcuating
> >> values that do not depend on opimization parameters. It looks
like
> > I
> >> will need to detect when the first/last bar change and flush my
> > cache.
> >>
> >> Too bad that we cant run the calculation on the 64 idle cores in
> > the
> >> video card using the CUDA api. Now that would be cool.
> >>
> >>
> >> --- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko" <groups@>
> >> wrote:
> >> >
> >> > Hello,
> >> >
> >> > Thank you for your kind words.
> >> >
> >> > Everything you need to know about QuickAFL:
> >> > http://www.amibroker.com/kb/2008/07/03/quickafl/
> >> >
> >> > Best regards,
> >> > Tomasz Janeczko
> >> > amibroker.com
> >> > ----- Original Message -----
> >> > From: "dloyer123" <dloyer123@>
> >> > To: <amibroker@xxxxxxxxxxxxxxx>
> >> > Sent: Friday, July 04, 2008 5:33 PM
> >> > Subject: [amibroker] Re: AmiBroker 5.14.0 BETA released
> >> >
> >> >
> >> > > Love the new Quick AFL support! It improved my execution
time
> >> from
> >> > > 41sec to 25sec for each optimization pass. It will shave
hours
> >> off
> >> > > each walkforward step.
> >> > >
> >> > > The new optimizer is a also a huge improvment and makes walk
> >> forward
> >> > > testing practical.
> >> > >
> >> > > A couple of questions for you:
> >> > > Is the full array still passed to a DLL, or just the part of
> > the
> >> > > array that Quick AFL is using? It looks like the full
array.
> > Is
> >> > > there any way that a dll can tell what part to use/ignore?
> >> > >
> >> > > Keep up the great work. Ami has taken a giant leap foward
in
> > the
> >> > > last few months.
> >> > >
> >> > > --- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko"
<groups@>
> >> > > wrote:
> >> > >>
> >> > >> Hello,
> >> > >>
> >> > >> AmiBroker 5.14.0 BETA is released now:
> >> > >> http://www.amibroker.com/devlog/2008/07/04/amibroker-5140-
beta-
> >> > > released/
> >> > >>
> >> > >> CHANGES IN VERSION 5.14.0 (as compared to 5.13.0):
> >> > >>
> >> > >> 1.. added support for Quarterly and Yearly intervals in
all
> >> parts
> >> > > of the program
> >> > >> 2.. Changes to drawing made in v5.13 caused improper
drawing
> >> > > lines located PAST the last available quote (trendlines and
> >> > > pitchforks) when timestamping method was "START TIME of
> >> interval".
> >> > > This is fixed now.
> >> > >> 3.. Fixed AddSummaryRows so 'onlycols' parameter default
> >> (zero)
> >> > > is applied properly
> >> > >> 4.. Implemeted "Select all" via Ctrl-A keyboard shortcut
for
> >> all
> >> > > list (result list in AA for example)
> >> > >> 5.. Mouse cursor shape (moving/sizing) reflects the
selected
> >> > > study priority when more than one study exists under mouse
> >> position
> >> > >> 6.. new multiple Volume At Price charts at user-defined
> > points
> >> > > via new PlotVolumeOverlayA function
> >> > >> 7.. QuickAFL can now be used in Automatic Analysis
> > (Settings:
> >> > > General: "Use QuickAFL" - check this box) - this can speed
up
> >> > > explorations, scans and backtests by factor of 2+ if range
is
> >> less
> >> > > than "all quotations". More on this:
> >> > > http://www.amibroker.com/kb/quickafl
> >> > >> 8.. Range Bars compression now uses TickSize as "1R
step".
> >> > > TickSize defined in the Symbol Information, if its value is
> > zero,
> >> > > then 1R would be equivalent to 0.01 movement (for backward
> >> compat)
> >> > >> 9.. selecting date in multiple linked charts is now
faster
> >> > > because redraw is not made when selected line in higher
> >> compressed
> >> > > interval remains in place
> >> > >> 10.. selector line in linked charts works OK now,
regardless
> >> of
> >> > > selected time compression timestamping method
> >> > >> 11.. SetBarsRequired accepts now values -2 in special
> > meaning:
> >> > > reference ALL bars
> >> > >> 12.. Sometimes progress bar did not show the name of
> >> optimization
> >> > > engine used. Now it is fixed
> >> > >> 13.. Status("ActionEx") provides more codes than Status
> >> ("action")
> >> > > to detect special executions states
> >> > >> 14.. Streaming chart update could stall if trend line
handle
> >> was
> >> > > clicked in attempt to resize and released in the very same
> >> position
> >> > > (without moving the mouse). Now it is fixed.
> >> > >> 15.. TimeFrameMode() now supports mode == 4 - which
> > expresses
> >> > > RANGE bars in TickSize units (as opposed to mode 3 that uses
> >> dollars
> >> > > for backward compatiblity)
> >> > >> 16.. when display chart timing option is turned on and RT
> >> stream
> >> > > is active the application STATUS BAR now displays TOTAL time
> > for
> >> all
> >> > > charts, it should be BELOW 1 second for RT trading
> >> > >>
> >> > >> Best regards,
> >> > >> Tomasz Janeczko
> >> > >> amibroker.com
> >> > >>
> >> > >
> >> > >
> >> > >
> >> > > ------------------------------------
> >> > >
> >> > > Please note that this group is for discussion between users
> > only.
> >> > >
> >> > > To get support from AmiBroker please send an e-mail directly
to
> >> > > SUPPORT {at} amibroker.com
> >> > >
> >> > > For NEW RELEASE ANNOUNCEMENTS and other news always check
> > DEVLOG:
> >> > > http://www.amibroker.com/devlog/
> >> > >
> >> > > For other support material please check also:
> >> > > http://www.amibroker.com/support.html
> >> > > Yahoo! Groups Links
> >> > >
> >> > >
> >> > >
> >> >
> >>
> >
> >
> >
> > ------------------------------------
> >
> > Please note that this group is for discussion between users only.
> >
> > To get support from AmiBroker please send an e-mail directly to
> > SUPPORT {at} amibroker.com
> >
> > For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
> > http://www.amibroker.com/devlog/
> >
> > For other support material please check also:
> > http://www.amibroker.com/support.html
> > Yahoo! Groups Links
> >
> >
> >
>
------------------------------------
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