Hello, That's interesting. Do you mean Windows Vista 64 bit blue screen of death (BSOD) with Memory management error ?
What I would do first is to run extensive memory checks with memtestx86 (www.memtest.org) Let me guess: do you have Asus mainboard with all 6 memory slots fitted in ? Guess you are facing hardware stability issues (6 module configs are less stable). Best regards, Tomasz Janeczko amibroker.com On 2010-03-30 05:52, uman3344 wrote: > > --- In [email protected], "ozzyapeman"<zoopf...@...> wrote: > >> Dang! A bit of a false alarm in being able to run 8 instances in parallel. I >> had assumed (always a mistake) that the runs went smoothly. But when I >> checked my PC this morning, found out that the runs did not actually >> complete. The PC must have crashed and rebooted somewhere in between. >> >> So I restarted, this time, using only 4 instances, and sat in front of the >> screen for a few minutes. Indeed, the system crashed with a "Memory >> management error"! >> >> Damn! With 12GB of ram on Vista64 with an i7 processor (seen as 8 processors >> by the OS), shouldn't I be able to run 4 measly instances of AB, each doing >> an optimization over 2-years worth of 1-minute data? The total size of my >> symbol database is only 156mb. >> >> It's a new PC with a fresh install, and only Avast anti virus running at >> startup. The only other programs installed are AB, Firefox, Office 2003 and >> Thunderbird. And when I run AB, all other programs are closed. >> >> Is there some memory management utility I can run that can better allocate >> memory? >> >> Or is Vista64 really no better than plain old WinXP32, as far as being able >> to run more instances of AB on a single machine? I thought that one of the >> main advantages of Vista64 over XP32 was precisely the ability to make more >> RAM available for multiple instances of a program. >> >> >> >> --- In [email protected], "ozzyapeman"<zoopfree@> wrote: >> >>> I was comparing Vista64 to XP32 (which I was using), not XP64. >>> >>> I imagine XP64 would probably allow one to run as many instances of AB as >>> Vista64. But from what I could gather, XP64 seemed less >>> reliable/stable/supported than Vista64, so I went with the latter. >>> >>> Been using Vista64 on an overclocked i7 PC, with 12GB ddr3 ram now for >>> about a week. Certainly a big difference over my XP32 install. Yesterday I >>> ran 8 large walk-forward tests in parallel (1-min databases, several >>> years), no problem. Didn't even come close to maxing out the system. The >>> XP32 install would tend to hang/crash if I tried 3 such parallel runs. >>> >>> Will play around with multiple instances over the next few weeks to see >>> just how far I can push things. >>> >>> And once I turned off that annoying UAC thing, haven't noticed any >>> disadvantages yet with Vista. Maybe its bad reputation was only warranted >>> in the first year it was out - with respect to driver issues and other >>> problems. All that stuff seems to have been cleared up in the latest >>> service packs. >>> >>> >>> >>> --- In [email protected], Keith McCombs<kmccombs@> wrote: >>> >>>> Ozzy -- >>>> What makes you think that, given the same hardware, Vista64 allows you >>>> to run more instances of AB than XP64? >>>> >>>> TJ -- >>>> Thanks for your comments on the subject. Admittedly, I didn't >>>> understand how he was doing the testing. >>>> >>>> All -- >>>> Once again I would like to suggest: >>>> "How about writing some benchmarks in afl? I assume the code wouldn't >>>> have to be very complex, nor would it have to be for any sort of >>>> 'winning' system. Just something that everyone could run and we could >>>> get some comparative speed results." We might also need to make a >>>> static artificial data base so that everyone was running the same test. >>>> >>>> That would help many of us when it comes time to buy a new, or update an >>>> older, computer. >>>> -- Keith >>>> >>>> ozzyapeman wrote: >>>> >>>>> Thanks for the clarification. >>>>> >>>>> My understanding then, based on what I can gather from the net, is >>>>> that Windows Vista 64-bit will give me the sole advantage of allowing >>>>> me to run many more instances of AmiBroker, especially with the i7 >>>>> processor and 12 GB of RAM, vs on WinXP. >>>>> >>>>> In that way, I can run more large optimizations simultaneously, >>>>> without running out of memory, thus saving a lot of time overall. >>>>> >>>>> I had come across one article that tested as much, with other 32-bit >>>>> apps running on XP32 vs Vista64, and the difference in multitasking >>>>> ability was huge. >>>>> >>>>> --- In [email protected]<mailto:amibroker%40yahoogroups.com>, >>>>> "Tomasz Janeczko"<groups@> wrote: >>>>> >>>>>> Those Windows Vista tests were made using Microsoft SQL server. >>>>>> >>>>>> AmiBroker does NOT use Microsoft SQL server or any other 3rd party DB. >>>>>> It uses own original low-level database that is highly specialized >>>>>> for quote processing is pretty independent from operating system. >>>>>> It works equally well on every Windows version >>>>>> (starting from Win95 and ending at Windows 7). >>>>>> >>>>>> Best regards, >>>>>> Tomasz Janeczko >>>>>> amibroker.com >>>>>> ----- Original Message ----- >>>>>> From: "ozzyapeman"<zoopfree@> >>>>>> To:<[email protected]<mailto:amibroker%40yahoogroups.com>> >>>>>> Sent: Tuesday, March 17, 2009 7:17 AM >>>>>> Subject: [amibroker] Re: OT: Computer recommendation for AB optimizing >>>>>> >>>>>> >>>>>> >>>>>>> Whoa. Just read that article. Seems that WinXP 64 makes better >>>>>>> >>>>> sense by far to drive my new Intel i7 PC. The speed difference is >>>>> >>>>>>> quite significant. I might have just wasted money shelling out on >>>>>>> >>>>> a Vista 64-bit installation disk. >>>>> >>>>>>> Is Amibroker 32-bit pretty stable on WinXP 64? I only have >>>>>>> >>>>> experience running it on WinXP 32. >>>>> >>>>>>> If I only plan on running AmiBroker 5.24, TWS 892, and other basic >>>>>>> >>>>> 32-bit trading tools on the PC (and maybe Firefox and Outlook), >>>>> >>>>>>> would WinXP 64 be the way to go, or are there hidden disadvantages >>>>>>> >>>>> in going with that OS? >>>>> >>>>>>> I am aiming for the fastest backtesting platform possible. >>>>>>> >>>>>>> >>>>>>> --- In [email protected] >>>>>>> >>>>> <mailto:amibroker%40yahoogroups.com>, Keith McCombs<kmccombs@> wrote: >>>>> >>>>>>>> Dingo -- >>>>>>>> Please read >>>>>>>> >>>>>>>> >>>>> http://www.infoworld.com/article/09/01/22/03TC-windows-multicore_3.html >>>>> <http://www.infoworld.com/article/09/01/22/03TC-windows-multicore_3.html> >>>>> >>>>>>>> for some comparisons between Vista64 and XP64. >>>>>>>> -- Keith >>>>>>>> >>>>>>>> dingo wrote: >>>>>>>> >>>>>>>>> 50% longer for AB to run - hardly believable. >>>>>>>>> >>>>>>>>> d >>>>>>>>> >>>>>>>>> On Thu, Mar 12, 2009 at 3:51 PM, Keith McCombs<kmccombs@ >>>>>>>>> <mailto:kmccombs@>> wrote: >>>>>>>>> >>>>>>>>> A few personal thoughts: >>>>>>>>> 1. The 2.93GHz costs $470 more than 2.66. I doubt that very many >>>>>>>>> of us can tell the difference without a stopwatch. >>>>>>>>> >>>>>>>>> 2. I don't know about running AB, but in many published speed >>>>>>>>> tests, Vista64 takes about 50% longer than XP64. >>>>>>>>> >>>>>>>>> -- Keith >>>>>>>>> >>>>>>>>> >>>>>>>>> ozzyapeman wrote: >>>>>>>>> >>>>>>>>>> Thanks. I was looking into i7 based-PCs. But aren't all i7's >>>>>>>>>> quad-cores to begin with? And apparently the OS sees an i7 as >>>>>>>>>> 8-core due to the way it's designed. >>>>>>>>>> >>>>>>>>>> Dell seems to have a good deal on i7 XPS desktops at 2.93 Ghz >>>>>>>>>> >>>>>>>>>> --- In [email protected] >>>>>>>>>> >>>>> <mailto:amibroker%40yahoogroups.com> >>>>> >>>>>>>>>> <mailto:amibroker%40yahoogroups.com>, dingo<waledingo@> wrote: >>>>>>>>>> >>>>>>>>>>> Intel dual core i7 with fast clock - AB only uses 1 core. 3gig >>>>>>>>>>> >>>>>>>>>> mem. Intel >>>>>>>>>> >>>>>>>>>>> SLC flash (if you've got the money otherwise WD Raptor). Medium >>>>>>>>>>> >>>>>>>>>> video card. >>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> d >>>>>>>>>>> >>>>>>>>>>> On Wed, Mar 11, 2009 at 12:57 AM, ozzyapeman<zoopfree@> wrote: >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>>> I should add that I need to run exhaustive optimizations, as >>>>>>>>>>>> >>>>>>>>>> opposed to >>>>>>>>>> >>>>>>>>>>>> CMAE or using Fred's IO, as my variables are discontinuous - >>>>>>>>>>>> >>>>>>>>>> not traditional >>>>>>>>>> >>>>>>>>>>>> indicator-type variables. >>>>>>>>>>>> >>>>>>>>>>>> In my parallel dream life, I run AB Ultra Professional 7.0 on >>>>>>>>>>>> >>>>>>>>>> 8 state of >>>>>>>>>> >>>>>>>>>>>> the art graphics cards, with thousands of processors, 500,000 >>>>>>>>>>>> >>>>>>>>>> times faster >>>>>>>>>> >>>>>>>>>>>> than good old AB 5.24. >>>>>>>>>>>> >>>>>>>>>>>> But I digress. ;-) >>>>>>>>>>>> >>>>>>>>>>>> In the real world, what is the best I can do? >>>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>>> --- In [email protected] >>>>>>>>>>>> >>>>> <mailto:amibroker%40yahoogroups.com> >>>>> >>>>>>>>>> <mailto:amibroker%40yahoogroups.com>, "ozzyapeman"<zoopfree@> >>>>>>>>>> >>>>> wrote: >>>>> >>>>>>>>>>>>> Now that I am just about trading full time, my main PC has >>>>>>>>>>>>> >>>>>>>>>> become a >>>>>>>>>> >>>>>>>>>>>> dedicated trading computer. That only leaves me with a clunky >>>>>>>>>>>> >>>>>>>>>> second PC >>>>>>>>>> >>>>>>>>>>>> (6-years old) for doing offline optimizing. And it's waaay >>>>>>>>>>>> >>>>>>>>>> too slow. >>>>>>>>>> >>>>>>>>>>>>> So I am in the market for a new PC, and want to get >>>>>>>>>>>>> >>>>>>>>>> something powerful, >>>>>>>>>> >>>>>>>>>>>> but don't want to overpay for stuff that won't be used. For >>>>>>>>>>>> >>>>>>>>>> example, 8GB of >>>>>>>>>> >>>>>>>>>>>> RAM sounds great, but if WinXP only uses 4GB (or 3?) then I >>>>>>>>>>>> >>>>>>>>>> imagine the >>>>>>>>>> >>>>>>>>>>>> other 4 GB just goes to waste? >>>>>>>>>>>> >>>>>>>>>>>>> If I plan to use this PC mainly for offline optimizing and >>>>>>>>>>>>> >>>>>>>>>> backtesting, >>>>>>>>>> >>>>>>>>>>>> what are the recommended specs? I want as much speed as I can >>>>>>>>>>>> >>>>>>>>>> possibly get. >>>>>>>>>> >>>>>>>>>>>> My optimizations tend to be humongous, taking days on a quad >>>>>>>>>>>> >>>>>>>>>> core. >>>>>>>>>> >>>>>>>>>>>>> Any hardware gurus please feel free to chime in: >>>>>>>>>>>>> >>>>>>>>>>>>> - RAM? >>>>>>>>>>>>> - Quad-core vs Eight-core? >>>>>>>>>>>>> - OS? >>>>>>>>>>>>> - HD type (flash vs mechanical)? >>>>>>>>>>>>> - any other hardware/software suggestions for increasing >>>>>>>>>>>>> >>>>> speed? >>>>> >>>>>>>>>>>>> Thanks! >>>>>>>>>>>>> >>>>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>>> ------------------------------------ >>>>>>>>>>>> >>>>>>>>>>>> **** 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<http://amibroker.com/ >>>>>>>>>>>> >>>>> <http://amibroker.com/>> >>>>> >>>>>>>>>>>> TO SUBMIT SUGGESTIONS please use FEEDBACK CENTER at >>>>>>>>>>>> http://www.amibroker.com/feedback/ >>>>>>>>>>>> >>>>> <http://www.amibroker.com/feedback/> >>>>> >>>>>>>>>> <http://www.amibroker.com/feedback/ >>>>>>>>>> >>>>> <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/ >>>>>>>>>>>> >>>>> <http://www.amibroker.com/devlog/> >>>>> >>>>>>>>>> <http://www.amibroker.com/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/ >>>>>>> >>>>> <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/<http://www.amibroker.com/devlog/> >>>>>>> >>>>>>> Yahoo! Groups Links >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>> >>>>> >>>>> >>>> >>> >> > > You might want to check up your overclocking stability using softwares like > Orthos for CPU or Memtest for memory. Have a play with the core voltage, > raise like 0.025 when the tests fails and repeat them until you can reach a > balance between stability and speed. > > Andy > > > > > > ------------------------------------ > > **** 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 > > > > >
