topic Re: Unknown Memory Allocator? in Arnold General Rendering Forum

Unknown Memory Allocator?

Anonymous — Tue, 12 Mar 2019 19:19:08 GMT

Integrating the Arnold Render engine in blender, I get this strange warning, any ideas how to get around this?

00:00:00   326MB WARNING | detected unknown memory allocator loaded from "/ho
me/furby/Blender/blender".  This might not be compatible with arnold and migh
t result in performance regressions, increased memory usage, and crashes! If 
it must be used, please contact support@solidangle.com so we can put th
is allocator on the approved list

Re: Unknown Memory Allocator?

Stephen.Blair — Tue, 12 Mar 2019 19:23:54 GMT

That means Arnold suspects that Blender is using a custom memory allocator. If you're not getting any crashes, it's probably safe, but we'd to know more about the custom memory allocator.

Re: Unknown Memory Allocator?

Anonymous — Tue, 12 Mar 2019 19:26:05 GMT

Thanks for the quick reply, I'll ask the devs to see if they know more about it.

Re: Unknown Memory Allocator?

Anonymous — Tue, 12 Mar 2019 20:06:39 GMT

Blender uses a custom memory allocator called "guardedalloc". The sources are all here: https://developer.blender.org/diffusion/B/browse/master/intern/guardedalloc/

Calls like `MEM_mallocN`, `MEM_callocN`, etc are being used almost everywhere, they do wrapping stuff for malloc, calloc, etc.

Re: Unknown Memory Allocator?

Stephen.Blair — Wed, 13 Mar 2019 22:24:18 GMT

Hi @Tyler Furreboe I'm surprised this has not come up before. Or is there a way to run Blender without a custom memory allocator?