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Tyler Furreboe avatar image
Tyler Furreboe asked ·

Unknown Memory Allocator?

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
render
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Stephen Blair avatar image
Stephen Blair answered ·

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.

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Tyler Furreboe avatar image
Tyler Furreboe answered ·

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

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Tyler Furreboe avatar image
Tyler Furreboe answered ·

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.

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Stephen Blair answered ·

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?

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