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  • #259774 |
    Participant
    86 Posts

    Why is SQ limited to 24GB RAM, JAVA limitations?

    SQ detected and used only 24 GB RAM, whilst I have got 128 GB RAM

     

    #259775
    tomas262
    Administrator
    1826 Posts

    Hello,

    neither SQX not Java is not limited to 24GB. What SQ build do you use now? Can you verify your Configuration -> Memory is set to “Let program determine max memory” … if yes, can try to “Set maximum memory to : 48GB”?

    #259777
    Customer
    793 Posts

    i need to always set RAM manually – SQX automatically reserve very few memory

    if i have on server 128 GB, i set manually to 120 GB and in laptop with 8 GB i set manully to 6

    if i let to decide SQX the RAM is set at very low value and it doesnt make sense to me

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    #259995
    Customer
    18 Posts

    i need to always set RAM manually – SQX automatically reserve very few memory if i have on server 128 GB, i set manually to 120 GB and in laptop with 8 GB i set manully to 6 if i let to decide SQX the RAM is set at very low value and it doesnt make sense to me

    And does it make any difference performance wise ?  It seems to me you just creating larger java heap  and thus more work for GC. SQX is pre-caching in memory market and indicator data and it’s just sharing between runs which is cool (but very bad for NUMA servers but that’s other story)

    Enyx

    #260024
    Customer
    793 Posts

    its not about performance but i dont want to end with frozen GUI, because for some of my projects (retesting on 16 markets) i need something like 50 GB RAM – and if i let SQX set the ram automatically i will have not enough

    You want to be a profitable algotrader? We started using StrateQuant software in early 2016. For now we have a very big knowhow for building EAs for every possible types of markets. We share this knowhow, apps, tools and also all final strategies with real traders. If you want to join us, fill in the FORM. 1500+ final SQX strategies for members running on demo accounts to verify the edge DEMO ACCS. We provide also strategies for indices - DAX, DOW JONES, NASDAQ, SP, UK, because we have realtick data from our brokers.

    #260025
    Customer
    18 Posts

    ok now it makes sense and excellent feedback.

    I did a little research on latest SQX129Dev6 and it seem “Auto memory size” is indeed removing maximum heap size from java launch. Which basically means it 50% of ram.

    Does it sound like a new feature request to allow java heap size memory as percentage of memory or variation of it ?

    #260026
    Customer
    18 Posts

    Correction: It should be less memory kind of 1/4 ram but it’s platform depended. Do not have time to check in depth but it’s definitely too fuzzy as default.

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