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Altera_Forum's avatar
Altera_Forum
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14 years ago

Out of memory error

following is the error i'm getting when i run fitter.

"Out of memory in module quartus_fit (2147 megabytes used) while running 32-bit Quartus II 32-bit on a 64-bit OS platform. Please use the 64-bit Quartus II 32-bit to increase memory capacity.

[mohat3@north phy1]$ "

I've attached a screenshot of it too.,

COULD anyone tell me if it is because of the processor (data width) or the RAM, I am asking this cause I am able to run it successfully sometimes but not always.

It's kinda urgent PLZ help.

10 Replies

  • Altera_Forum's avatar
    Altera_Forum
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    14 years ago

    Why not try reading the error? you need the 64-bit edition of quartus.

  • Altera_Forum's avatar
    Altera_Forum
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    14 years ago

    @TRICKY

    ofcourse i understand the msg.,

    but my question is why is it that i'm not getting this error always. I am using the same file the same constraints and the qsf too.,

    if it was a processor related error then it shouldnt be ever possible to run it right?
  • Altera_Forum's avatar
    Altera_Forum
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    14 years ago

    if you dont have the minimum required memory available (3GB for larger Arria2 and smaller Stratix4, and more for larger devices) you just have to cross your fingers.

  • Altera_Forum's avatar
    Altera_Forum
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    14 years ago

    I am targetting it to a stratix 5 device., i have to meet around 220MHZ for the design., so wat is the minimum RAM space i need to have??

    and if i can add more ram to the system then can i continue using the 32bit version??
  • Altera_Forum's avatar
    Altera_Forum
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    14 years ago

    No you will need a 64-bit OS if you want to use more than 3Gb of memory. What Stratix5 device are you targetting? The bigger the device the more RAM you need.

  • Altera_Forum's avatar
    Altera_Forum
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    14 years ago

    32-bit Quartus 2 can only access 4gb of ram, regardless of how much there is available.

    IIRC, the larger Stratix 5 devices need 12GB of ram mimum.
  • Altera_Forum's avatar
    Altera_Forum
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    14 years ago

    Remember that everything in your PC is memory mapped. So with a 32-bit OS it has a total of 4GB to work with. All the little controllers on the motherboard, registers of your drives, PCI/PCIe cards including graphics, etc... all get placed in that 4GB address space. So to compile for large FPGAs you need a substantial amount of memory and a 64-bit OS (and 64-bit processor) to make sure it's addressable.

    You are probably on the hairy edge of running out of addressable memory when the compile does complete. For a Stratix V design you are going nowhere using a 32-bit OS in my opinion.