> > But why a 32bit application can run 64bit OS no problem?
Microsoft puts an incredible emphasis on (and resources towards) backward compatibility: http://en.wikipedia.org/wiki/WoW64 > Can dlopen supports both 32 and 64 bits module? No, WoW64 doesn't go quite that far. DLL architecture must still match process architecture within a given process. I would suggest to install 64-bit Anaconda if you are trying to use some included package via PyCall. On Thu, Feb 5, 2015 at 12:46 AM, 进陆 <[email protected]> wrote: > I am using Julia Version 0.3.4 (2014-12-26 10:42 UTC)( Official release, > x86_64-w64-mingw32) coming with Juno bundle on Win7 64 bits > I have both Anaconda-python27(which is 32 bits) and > python-3.4.2.amd64(which is 64 bits) > > But I can't let PyCall run, so I traced it and found that dlopen could not > load 32 bit module on Win7 64 bits. > But why a 32bit application can run 64bit OS no problem? Can dlopen > supports both 32 and 64 bits module? > Thanks. > > [quote] > julia> isfile("E:\\prg\\py\\Anaconda\\python27.dll") > true > > julia> dlopen("E:\\prg\\py\\Anaconda\\python27.dll", > RTLD_LAZY|RTLD_DEEPBIND|RTLD_GLOBAL) #this is 32bits DLL > ERROR: could not load module E:\prg\py\Anaconda\python27.dll: The > specified module could not be found. > > julia> dlopen("E:\\prg\\py\\python-3.4.2.amd64\\python34.dll", > RTLD_LAZY|RTLD_DEEPBIND|RTLD_GLOBAL)#this is 64 bits DLL > Ptr{Void} @0x000000000737a500 > [/quote] > > > >
