How to adjust CPU and RAM Consumption

[tjfintrade]

Hi there,

I have been having issues with NT8 Desktop using 100% of my CPU and crashing. I can't even run a strategy analyzer if I have anything else open on my computer.

I understand analyzers take a lot of computing however, I use other platforms that have robust analyzers like TradeStation and I have never had an issue with it consuming 100% of my CPU and 100% of MY RAM at the same time.

Is there a way to adjust the NT8 settings for more usage efficiency with the analyzer and charts in general?

[NinjaTrader_ChelseaB]

Hello tjfintrade,

The Strategy Analyzer when running a backtest will only be using 1 logical processor as there is only 1 thread iteration being tested.
However, with an optimization this will use all logical processors, running iteration threads simultaneously to complete the optimization as quickly as possible.

To reduce the load on the PC, you can reduce the number of iterations, reduce the amount of days of data being loaded into memory, take advantage of IsInstantiatedOnEachOptimizationIteration being set to false, and disable IncludeTradeHistory if the SystemPerformance collection is not being accessed.

Below is a link to a forum post with these tips.

https://forum.ninjatrader.com/forum/ninjatrader-8/platform-technical-support-aa/1069302-memory-bug-when-wfa-optimizing?p=1069339#post1069339

[kevinenergy]

Looks like you've got a memory leak which is why its crashing. I've posted extensively about strategy analyser memory leaks in the past.

One cause could be Drawing Objects : Strategy Optmizer Memory Leak - NinjaTrader Support Forum

But that was 5 years ago. I don't know if that's been fixed or not, if any of your indicators call Draw.XXX() Line, rectangle, etc Then I'd try commenting out those and see if it resolves

If you watch the "Memory" tab in the Performance section of the task manager.... When Strategy Analyzer is working you'd expect to see Memory-use climb a bit then drop, climb then drop repeatedly. This is the garbage collector working. If memory use is climbing until its all used without dropping at all and Ninjatrader crashes its a memory leak.

[tjfintrade]

kevinenergy Thanks for the info. " If memory use is climbing until its all used without dropping at all and Ninjatrader crashes its a memory leak" That's exactly what's happening. I will look into the post you shared in more detail and hopefully we can get this resolved.

[madb123]

i have the same issue trying to resolve

[NinjaTrader_ChelseaB]

Hello madb123,

May we confirm the script is not calling draw methods when in the Strategy Analyzer?

Do you have IsInstantiatedOnEachOptimizationIteration set to false?

Is IncludeTradeHistory false?

[madb123]

Hi no drawings.. i simplified the strat a bit in the way it was built in the strat builder and reduce itterations.. then it capped at lower level of ram instead of my full 64gb somewhere around 30gb and kept running. thanks