128G Ram

[iceman2020]

In what circumstances would an at home trader benefit from 128 gigs of Ram as opposed to 64?

[NinjaTrader_Manfred]

Hello iceman2020,

Thank you very much for your post.

At the current time, the most I have ever seen NinjaTrader use, even with complicated third-party indicators, would be 10-20 GB of RAM.

I would not expect a system to perform better with 128 GB than with 64 GB, as the memory would unlikely be a bottleneck in this scenario.

Please don't hesitate to let me know, should you have any further questions!

[gaz0001]

For regular trading, I don't think you would benefit.

For Backtesting and optimisation.
After a while alll the RAM gets used up. Bringing the system to a total halt. You need to restart Ninja and PC to recover.

Might be useful in this scenario.
I regularly crash my machine with 64GB RAM during Backtesting and Optimisation

[Leeroy_Jenkins]

gaz0001 how many iterations do you have before it crashes your PC? Or you doing something crazy on tick data with huge time window. Cuz I can't imagine crashing machine with that amount of RAM.

[gaz0001]

Well, i have just ran this, and now my platform is bummed out.

I need to reset it. Its not an unusual scenario.

[bltdavid]

In what circumstances would an at home trader benefit from 128 gigs of Ram as opposed to 64?

I would add that it depends what else you may be
doing on your trading machine at the same time.

How many browser windows/tabs are open?
Are you also running Discord/Telegram/Skype?
Running any screen capture/recording software?

Just with normal trading, I'm finding 16Gb RAM insufficient
mostly due to Firefox/Chrome memory requirements. From
64Gb to 128Gb, I'd suspect the only possible benefit would
be in backtesting and/or optimizations.

[Leeroy_Jenkins]

3 iterations x 4 instruments = 12 iterations on 3 months window. Wow. I can have millions iterations with less than 10GB used. But I never use 1 tick fill resolution.

[bltdavid]

For regular trading, I don't think you would benefit.

For Backtesting and optimisation.
After a while alll the RAM gets used up. Bringing the system to a total halt. You need to restart Ninja and PC to recover.

Might be useful in this scenario.
I regularly crash my machine with 64GB RAM during Backtesting and Optimisation

Have you seen this with any NT provided sample strategies?

[rayko]

Here is a previous thread about backtesting and memory consumption.

https://forum.ninjatrader.com/forum/ninjatrader-8/platform-technical-support-aa/1268802-slow-backtest-optimisation-with-tick-replay

Read the thread. This request is being tracked under the number SFT-2111. You can repeat the behavior using SampleMACrossover.
"optimizations use a significant amount of memory, the memory is not decommitted right away"

Like gaz0001, I run backtests that bring my 32gig machine to its maximum memory forcing me to restart many times a day to get my PC back.