NinjaTrader 8 Indicators and More - A notice to all downloaders
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Notice to all Downloaders

As at NT8.0.4, Feb 2017, Ninja Trader LLC has been struggling to contain errors and memory leaks on some indicators. It may not be the code itself but something internal within NT8. It seems to be due to the multi-threaded nature of NT8, ie. multiple cores being used to make calculations. In regards to 'memory leaks', I refer to NT8 sharply escalating it's use of memory, causing NT8 to crash eventually. This is often caused by objects in code being created in one thread and the indicator goes looking for it in another thread.

Please be patient and use indicators carefully, especially on tick replay.

The way to monitor/help your NT8 is thus:

1. Hold down Ctrl & Alt and then press Delete. This will open up your task manager. You can observe NT8's memory usage. If you see NT8 memory sharply increase then you may have a 'memory leak'. You should shut it down by clicking on NT8 in the task manager and then 'End Task'. Keep in mind this will not save your latest workspace.

2. Keep your 'Log' tab open to see for any warnings. They will usually appear in orange. If you have an OnRender DirectX warning then chances are NT8 will have a memory leak and will crash a period of time later. Shut down as above.

3. I always open NT8 now with ONLY a simple workspace (all else should be closed) with only a couple of naked minute/tick charts on it. Connect to your broker, let the data load, then open your complicated workspaces. This seems to solve most memory leaks. The change from Historical state to Realtime seems to cause NT8 some grief with the OnRender method.

I do feel that NT8 has kept us in the dark with communication, so that's why I'm giving you some tips that work for me. I'm interested if you have any other ideas that work for you


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February 19th, 2017
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