|
PureBytes Links
Trading Reference Links
|
Adding reference to Tomasz's answers to Herman's earlier thread, for
future reference, regarding 64 bit OS.
http://finance.groups.yahoo.com/group/amibroker/message/125775
Also, comment from Tomasz indicating that only local database can be
used when using 64 bit AB. Can anyone confirm that they are using
TC2007 or Premium Data with AB 64 bit? I'm assuming that just setting
the local database option in the database settings would be enough.
http://finance.groups.yahoo.com/group/amibroker/message/125710
Mike
--- In amibroker@xxxxxxxxxxxxxxx, "Mike" <sfclimbers@xxx> wrote:
>
> Hi,
>
> Given an unlimited budget (helps to identify what is possible, even
if
> not practical), what hardware configuration can deliver the best AB
> performance?
>
> There have been a number of threads touching on the topic. But, I'd
> like to see if I can capture insights in a single place, and to
> reflect the advancements available today.
>
> Any comments on any or all sections below would be much appreciated.
>
> My personal use case is for running custom backtests against 10
years
> of EOD data across thousands of symbols. Others may feel free to
add a
> slant of their own in their replies.
>
> CPU:
> ----
> In messages #125311 and #125420 Fred has demonstrated how a multi
core
> system can be leveraged using MCO (see files section) to have
> AmiBroker utilize all cores. Source:
> http://finance.groups.yahoo.com/group/amibroker/message/125311?
> threaded=1&l=1
> http://finance.groups.yahoo.com/group/amibroker/message/125420?
> threaded=1&l=1
>
> - Can MCO still be used when the AFL employs AddToComposite? Does
this
> equate to overlapping writes that Tomasz warned against in message
> #124368? Does MCO have a /IOPath equivalent to get around this as
> described by Paul regarding IO in message #124432? Source:
> http://finance.groups.yahoo.com/group/amibroker/message/124368
> http://finance.groups.yahoo.com/group/amibroker/message/124432
>
> - Are there any chip sets that are particularly better suited for
> AmiBroker backtesting? For example; Intel offers Core 2 Extreme QX
> series as well as Xeon 5400 series. From what I've read, despite
> identical specs, "the four pre-fetchers inside an X5482 are
optimised
> for running workstation/server applications such as CAD, 3D
rendering
> and databases, the pre-fetchers in the QX9775 are tuned for desktop
> applications and games." Am I correct in assuming that AmiBroker
would
> fall more into the desktop application category? Source:
> http://www.custompc.co.uk/reviews/601998/intel-skulltrail.html
>
> If the difference is not too drastic, the right motherboard paired
> with a $300-$400 Xeon can easily be overclocked to match a stock
$1500
> QX9775. Source:
>
http://techgage.com/article/building_an_affordable_skulltrail_system/5
>
> - Is there any evidence that AmiBroker would be better off in a
single
> chip setup (i.e. single quad core) vs. two chips (i.e. dual socket
> quad core)? I've seen benchmarks where single chips outperformed
> paired chips simply because software could not take advantage of
more
> than 4 cores. Yet, Fred's MCO setup would seem to have worked
around
> that limitation.
>
> Memory:
> -------
> In message #124353 Tomasz has said that it is the RAM that is the
> limiting factor for heavy optimizations since they will not fit in
the
> L2 cache. Similarly, in message #125651 Tomasz has said that "For
> optimum performance, as much RAM as you can have and CPU with fast
> floating point unit..." is the way to go. Source:
> http://finance.groups.yahoo.com/group/amibroker/message/124353
> http://finance.groups.yahoo.com/group/amibroker/message/125651?
> threaded=1&l=1
>
> - Does this imply that it would be better to move to a 64bit OS
just
> to gain access to more RAM? Is the RAM access on a 64bit OS still
> maxed out at 4GB when running 32bit applications (compared to the
> standard 2-3GB on a 32bit OS) as indicated in message #94875?
Source:
> http://finance.groups.yahoo.com/group/amibroker/message/94875
>
> - Does the latency of FB-DIMM DDR2 800 have much of an impact on
> AmiBroker as compared to plain DDR2 memory? There are motherboards
out
> there that allow big overclocking opportunities, but they use FB-
DIMM
> DDR2 memory. Would increased CPU speeds outweigh the penalty of FB-
> DIMM memory?
>
> - Is there a recommended swap file size? Tomasz has said that
having a
> swap file is better than not having one. Is there any
benifet/drawback
> of having a larger file vs. smaller file? Source:
> http://finance.groups.yahoo.com/group/amibroker/message/124434
>
> Hard Drive:
> -----------
> Hard drives typically come in 7200 RPM but are also available in
10000
> RPM, either of which can be arranged in a Raid 0 setup for further
> gains in speed.
>
> - Running nothing but AmiBroker and having 12MB of L2 cache with
4GB
> of RAM, would 10 years of EOD across 8000 symbols need to access
the
> drive beyond the first loading?
>
> - Would a 10000 RPM drive or Raid configuration result in any
> noticeable improvement in the above scenario?
>
> OS:
> ---
> 32bit Windows vs. 64bit Windows.
>
> - The AmiBroker website claims 25% speedup running 64bit AmiBroker
on
> 64bit OS. It also says that 32bit plugins will not work with 64bit
> AmiBroker, and that there are no 64bit data plugins available.
Could
> someone please clarify what is meant by data plugin in this
context?
> Specifically; If running a 64bit OS, would we have to run 32bit
> AmiBroker to use a database from TC2007 or Premium Data? Or does
this
> just apply to plugins like the Interactive Brokers TWS Plugin?
Source:
> http://www.amibroker.com/x64/
>
> - Are there any arguments in favor or against running 64bit Windows
XP
> vs. Windows Vista?
>
> - Are there any arguments in favor or against the various versions
of
> Vista as compared to each other (e.g. Business vs. Home vs. ...).
>
> Thanks.
>
> Mike
>
> P.S. In a perfect world, the information from this post could be
> cleaned up and posted as a topic in the UKB, also potentially
> satisfying Herman's request at
> http://www.amibroker.com/feedback/view_bug.php?bug_id=1461
>
------------------------------------
**** IMPORTANT ****
This group is for the discussion between users only.
This is *NOT* technical support channel.
*********************
TO GET TECHNICAL 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
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/amibroker/
<*> Your email settings:
Individual Email | Traditional
<*> To change settings online go to:
http://groups.yahoo.com/group/amibroker/join
(Yahoo! ID required)
<*> To change settings via email:
mailto:amibroker-digest@xxxxxxxxxxxxxxx
mailto:amibroker-fullfeatured@xxxxxxxxxxxxxxx
<*> To unsubscribe from this group, send an email to:
amibroker-unsubscribe@xxxxxxxxxxxxxxx
<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
|