Hello, 7 years of 1-minute data ? That's 840000 bars. Each bar is 40 byte. You are aware that you are reading and processing data set that has 34 MB for ONE symbol. Try simply copying the file on disk that has 34MB and you will see that it takes time (like 1-2 seconds) to READ such file. Not to mention any processing.
If application needs 1 second to solely READ the file from disk, then it is BUSY. Now depending on how complex your formula is and how long backtest is and whenever you use QuickAFL or not (it is turned OFF in AA settings by design) it may require billions of operations to execute your formula that data. Just wait until it processes the file and executes your formula, instead of nervously clicking. Best regards, Tomasz Janeczko amibroker.com On 2010-08-10 21:19, stocktrader1028 wrote: > Can you tell me about your machine configuration? What version of AB are you > running. I tried this on a friend's machine and it crashes his machine, but > it is an older computer with less RAM. > > How many years of data have you used successfully? Is there anything special > that you needed to do in AB to get it to work? > > Thanks, > Cey > > --- In [email protected], "gariki"<chetan.abm...@...> wrote: >> yes; i have. I have seen AB take a long time when i initially setup the DB >> but not during backtests. Maybe its something to do with the specific AFL >> you are using? >> >> >> --- In [email protected], "stocktrader1028"<cesara@> wrote: >>> I am trying to run intraday backtests using 1 minute bars on a single >>> symbol, SPY. I have data back to 2003. When I set the intraday timeframe to >>> 5 minute bars and try to backtest more than 5 years, AB either hangs or >>> crashes. Have others successfully backtested larger time periods using 1 >>> minute bars as the base data? >>> >>> Maybe it is my machine configuration? I am running Win 7 with 3GB of RAM >>> and AB 5.20. >>> >>> Any suggestions on what to do? >>> >>> Thank you, >>> Cey >>> > > > > ------------------------------------ > > **** 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 > > > >
