Error on running optimizer. Object reference not set to an instance of an object.

[vasily20011]

Following are the conditions where I get this error message.

Running strategy optimization with two variables

variable1 1;500;30
variable2 0.001;0.999;0.03

If I use smaller numbers (search area becomes bigger) such as 20, 0.02 instead of 30, 0.03 as above, this error message comes on after running for a long time and the optimization is terminated with no results. It seems to be that the arrays become too big. I am running NT latest version 6.5.1000.8 with XP service pack 3 and my .net installation shows .net 2.0, .net 3.0, .net framework 3.5 sp1. I have 2gb of memory.

[NinjaTrader_RJ]

Hello,

Thank you for your post.

This error is usually an indication of corrupt data in the database.

Try repairing the database: Tools --> Options --> Misc --> Repair DB.

[vasily20011]

Thanks for the prompt response. I did that numerous times to no avail. I followed the instructions I saw in the forum. Repaired and restarted ninjatrader and even rebooted the pc. Then again results I get are quite good for smaller number of iterations with the same data.

[NinjaTrader_Jason]

It seems the optimization requests too much resources when using smaller numbers.

I suggest to increase the search area step by step in relation to the initial optimization and check where the border lies.

[vasily20011]

That's exactly what I thought also. I have been doing what you suggested.

I ran this optimization with 1gb memory and 2gb memory on the same computer. The results are the same. I guess there are some built in limitations and additional memory does not help. Is there a way to allow NT to have access to more resources? Will I have more resources in version 7 ?

[NinjaTrader_JoshP]

vasily20011,

Your optimization request is of a quite large sample. Please decrease your optimization request or decrease the amount of data to optimize on. NT7 will have improvements in memory usage.