Hi Rashad, 2014-10-27 20:13 GMT+01:00 Pavel <pa...@pamsoft.cz>: > Hi Rashad, > > I believe this is given by the 32 bit implementation of Win32 API > (surprisingly, the API on 64bit systems is also called Win32, but is > implemented as 64bit). The system simply does not allow you to allocate > more memory. It even looks like the 3GB option (4GT) is maybe not > supported on Windows Vista/7/8 at all. > > Some interesting info can be found in this thread: > http://www.sevenforums.com/general-discussion/114715-4-gigabyte-tunning-windows-7-ultimate-32-bit.html > > some other info related to pre-Vista systems is here: > http://technet.microsoft.com/en-us/library/cc786709(v=WS.10).aspx > > Well, clearly - the answer is: if you want to allocate more than 2GB of > memory, use 64bit application. > > Pavel
That's not quite true ;) Even if it sounds easy On 32-bit OSes --large-address-aware has an effect of enabling up to 3 GB of memory for a process, if all used DLL having this flag set too, and the boot-options of the OS have special option. Not recalling its exact name, but IIRC it was /4GB or something like that. Google will tell you by searching for large address aware ... On 64-bit the picture is different, as here this flag has indeed an effect even without addng boot-option. Here a 32-bit process can get up to 4GB of usable process-space. >> >> The page says that supported OS are XP and 2003 Server. >> >> >> why --large-address-aware linker option is not helpful. Can anyone >> explain this? See for more details on msdn links like http://msdn.microsoft.com/en-us/library/windows/desktop/bb613473%28v=vs.85%29.aspx Regards, Kai ------------------------------------------------------------------------------ _______________________________________________ Mingw-w64-public mailing list Mingw-w64-public@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mingw-w64-public
