As I understand it MCO & IO are only useful for multicore optimization. For me that's no use... I'm more interested in multicore operation outside of optimization. i.e. heavy charting requirements, high resolution data throughput for day trading etc..etc...
I am actually using an octo core Mac Pro with Windows Vista 64 bit under bootcamp. It's very fast. Just a shame I can't utilise my extra cores in the way I would like. I'm using 32 bit AmiBroker... because none of the real time data API's work under 64 bit AmiBroker. --- In amibroker@yahoogroups.com, "Mike" <[EMAIL PROTECTED]> wrote: > > Are either of you guys using MCO or IO to leverage the multi cores? > Or, is the power of a single CPU and mucho RAM all you needed? > > Dingo, are you running 32bit or 64bit windows? > > Likewise, to both of you, 32bit or 64bit AmiBroker? > > Thanks. > > Mike > > --- In amibroker@yahoogroups.com, dingo <waledingo@> wrote: > > > > Mac Pro - 8 cores, mucho ram - very nicely put together. Run > windows on it - > > WHAM! > > > > d > > > > On Thu, Oct 16, 2008 at 9:27 PM, Michael Smith > <smith1964us@>wrote: > > > > > Dell M6400 workstation laptop 64 bit operating system w/16 GB > RAM, newest > > > quad core processor, 1 GB video card, 2-300 GB harddrives raid > configuration > > > ... see dell's small business products > > > > > > > > > > > > *From:* amibroker@yahoogroups.com > [mailto:[EMAIL PROTECTED] *On > > > Behalf Of *Mike > > > *Sent:* Thursday, October 16, 2008 8:35 PM > > > *To:* amibroker@yahoogroups.com > > > *Subject:* [amibroker] OT: Given unlimited budget, what's the > IDEAL > > > hardware configuration > > > > > > > > > > > > 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 > > > > > > > > > > > >
