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Win 7 32 bit?

Open ozyrisdigital opened this issue 2 years ago • 2 comments

Hi there.

Is it possible to compile your version for Win 7 32 bit?

Stupidly that's one thing I didn't check before getting excited and trying to run your fixed 3.x on my Win 7 machine! Blender 2.80 runs perfectly on it, allowing me to use my Wacom GD-1218-R 18" x 12" serial tablet on my 1070 ti.

Hope you can! Thanks!

ozyrisdigital avatar Jun 12 '22 13:06 ozyrisdigital

Support for 32bit systems has been removed after 2.80 (https://developer.blender.org/D5409) along with the libraries needed to build it (as part of the build process, it downloads prebuilt libraries from their svn server: https://svn.blender.org/svnroot/bf-blender/trunk/lib/win64_vc15/). I don't know how many of these libraries still work on 32-bit Windows.

In addition to the prebuilt libraries, the minimum supported version of CUDA to build Blender 3.x is 11.1 (https://wiki.blender.org/wiki/Building_Blender/CUDA) which is 64-bit only. Because of this a 32-bit version of Blender 3.x will not have CUDA support and you will not be able to use your 1070 TI for Cycles GPU rendering. The same applies to OptiX.

nalexandru avatar Jun 12 '22 19:06 nalexandru

On top of that, Mate, there is also RAM issue i assume , on x86, you will be getting up to 3.25 GB RAM if you are lucky (on windows, kernel depended, its different on freeBSD or what not) (Its not 4gb as people think, they don't take kernel space into account that is reserved).

Unlike win 7 support in which there is no reason not to support it, x64 architecture is a must and i highly recommend switching if possible.

Now, in theory, i understand there are issues with CUDA but nothing really prevents you from re-compiling on x86 architecture. as far as CUDA, you can not recompile drivers, not without the source code.

My question to you is, How exactly can you be modeling anything with close to 0 RAM? I open up blender with my default startup project (x64 build, default-only addons, v3.1.2 thanks to nalxandru), already 400mb RAM, Load up a simple file, jumps to 1GB RAM. (I guess swapping exists but it will only slow things down if all your machine does is page things related to blender back and forward from hard drive) and you still can't exceed 3.25 GB.

verdict : your 1070 TI on x86, is pretty much wasted, take the money and flush it down the drain.

Illasera avatar Jun 16 '22 13:06 Illasera