2009.03.11 15:41:15Tester memory handler: tester stopped because not enough memory | Forex Factory

Options

Permalinks
Print Thread

Similar Threads

Basket trading manager & trade handler 1 reply

Binary Options - How not to get stopped out 42 replies

MT4 Strategy Tester memory question 7 replies

MT4 Error Handler 3 replies

2009.03.11 15:41:15Tester memory handler: tester stopped because not enough memory

  • #1
  • First Post: Mar 11, 2009 6:12pm Mar 11, 2009 6:12pm
I'm getting this error code whenever I try one of my massive backtests.

Inserted Code
2009.03.11 15:41:15    Tester memory handler: tester stopped because not enough memory

Any way around that? I already have 16GB of RAM
  • #2
  • Mar 11, 2009 6:55pm Mar 11, 2009 6:55pm
Reduce the size of the data? About the only way I can think of.

Maybe MT4 has a memory limit you can tweak.
  • #3
  • Mar 12, 2009 1:12pm Mar 12, 2009 1:12pm
how big is the log file? according to this it stays open while the ea runs. http://articles.mql4.com/138
  • #4
  • Jul 9, 2009 7:04am Jul 9, 2009 7:04am
How could I limit the log file? Have the EA rewrite it while it runs? Or maybe find the log file in the directory and set it to "Read Only"?
  • #5
  • Jul 9, 2009 3:47pm Jul 9, 2009 3:47pm
the log files can grow to 20GB
  • #6
  • Jul 9, 2009 3:52pm Jul 9, 2009 3:52pm
That doesn't help me...

Take this backtest for example: http://www.forexfactory.com/showthread.php?t=98048

It took 3 days, 16GB of ram, a 3 ghz computer, and an extra 60GB in a paging file, and I still couldn't finish all 6 months of the backtest.

The best solution as I can see it, is to just delete the log file as it grows.
  • #7
  • Jul 9, 2009 10:17pm Jul 9, 2009 10:17pm
iv noticed a mt4 bug, it seems ram doesnt release, until u exit mt4, so each time i run any test, it consumes new ram, eventually i run out

maybe that bug is effecting you?
  • #8
  • Jul 10, 2009 8:18am Jul 10, 2009 8:18am
Quoting Ronald Raygun
That doesn't help me...

Take this backtest for example: http://www.forexfactory.com/showthread.php?t=98048

It took 3 days, 16GB of ram, a 3 ghz computer, and an extra 60GB in a paging file, and I still couldn't finish all 6 months of the backtest.

The best solution as I can see it, is to just delete the log file as it grows.
That's why I hate MT4. Well the strategy tester at least. I think the developers must have added it as an afterthought because it's a horrible horible piece of software.
  • #9
  • Jul 10, 2009 8:43am Jul 10, 2009 8:43am
Quoting trendchaser
iv noticed a mt4 bug, it seems ram doesnt release, until u exit mt4, so each time i run any test, it consumes new ram, eventually i run out

maybe that bug is effecting you?
It's the first backtest after I open it.



I guess my question is: Where is the expert log file? I'm going to change it to "read-only" and hopefully that fixes my problem.
  • #10
  • Jul 10, 2009 9:27am Jul 10, 2009 9:27am
I did a backtest 3-4 days ago with more than 10000 possibilities and the test went fine so i would say there is also a relation with the complexity of the EA.
  • #11
  • Jul 10, 2009 9:38am Jul 10, 2009 9:38am
The EA isn't complex except in the sense that the orders become so large that they are broken down into 9999-lot sized trades.

The lot requirements can get pretty high, and right before these memory errors pop up, the EA opening and maintaining as many as 5,000 trades.
  • #12
  • Jul 10, 2009 11:49am Jul 10, 2009 11:49am
If deleting the log file doesn't help, perhaps you could break the test into 2 time frames?

You're probably running into some kind of compounding problem, perhaps w/ the lots. If you could isolate what element is causing it perhaps you could code around it?
  • #13
  • Jul 10, 2009 12:02pm Jul 10, 2009 12:02pm
I am definitely running into a compounding problem Rabid. I have a section in the code which limits the lot size, and I have been able to run the EA through all 6 months.

by the end of month 3, the EA is around $150 billion. I figure at that rate of growth, the system can hit as much as 100 trillion by the end of the test. I can't find out until I can run the backtest all the way to the end =D
  • #14
  • Jul 10, 2009 6:30pm Jul 10, 2009 6:30pm
It probably doesn't simulate lots very efficiently. The data structure is probably not optimized well so when you get into a bajillion lots the thing sucks up all your memory trying to keep track of everything.

I've noticed that about MT4 in general, it's a memory hog all around. Just during a normal trade session it routinely sucks up 150mb ram. I'd hate to see what happens when pushed to it's limits.
  • #15
  • Jul 13, 2009 2:15am Jul 13, 2009 2:15am
Quoting Ronald Raygun
I am definitely running into a compounding problem Rabid. I have a section in the code which limits the lot size, and I have been able to run the EA through all 6 months.

by the end of month 3, the EA is around $150 billion. I figure at that rate of growth, the system can hit as much as 100 trillion by the end of the test. I can't find out until I can run the backtest all the way to the end =D
How about sticking with reasonnable lot size as anyway in real life broker will never let you trade above 20 lots without adding crazy spread or increased delay ?
  • #16
  • Jul 13, 2009 6:44am Jul 13, 2009 6:44am
Because I'm trying to create an insane backtest (read: greater than 189 billion). Mainly for bragging rights. If a newbie decides to show a backtest saying his/her/it's EA is amazing, I'll show my backtest.
  • #17
  • Jul 13, 2009 7:23am Jul 13, 2009 7:23am
Quoting Ronald Raygun
Because I'm trying to create an insane backtest (read: greater than 189 billion). Mainly for bragging rights. If a newbie decides to show a backtest saying his/her/it's EA is amazing, I'll show my backtest.
Too big issue for a horrible objective RR. I hope you scare those newbies!

good luck and happy trading!
Keep your hands up, and use your pant! - FxMatics
  • #18
  • Jul 18, 2009 10:59pm Jul 18, 2009 10:59pm
Quoting Ronald Raygun
Because I'm trying to create an insane backtest (read: greater than 189 billion). Mainly for bragging rights. If a newbie decides to show a backtest saying his/her/it's EA is amazing, I'll show my backtest.


Why not trade it for real and become a gazillionaire? Just don't show RBS or they(you)'ll have enough capital to control the markets lol.
  • #19
  • Jul 19, 2009 2:56am Jul 19, 2009 2:56am
Because it's based entirely on past data, so while it looks perfect in hind-sight it's useless going forward.
  • #20
  • Last Post: Jul 19, 2009 8:01am Jul 19, 2009 8:01am
Quoting MoForce


Why not trade it for real and become a gazillionaire? Just don't show RBS or they(you)'ll have enough capital to control the markets lol.
Plenty of interesting goings-on at RBS, details to follow.
0 traders viewing now