Forum Discussion
Honored ContributorOut 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_ForumRemember 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.- Altera_Forum
you can find RAM requirements here:
http://www.altera.com/literature/lit-qts.jsp in: Quartus II Software version 11.1 SP 1 Device Support Release Notes - Altera_Forum
ok thanks a lot :)
- Altera_Forum
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
ok thank you :)
I am targetting it to 5SGXEA7 series, - Altera_Forum
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
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
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
@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
Why not try reading the error? you need the 64-bit edition of quartus.
