Crash on linux at startup in usdview

[sebastienblor]

On linux, running usdview with the arnold render delegate crashes. The current workaround for this is to ld-preload the arnold library.
So we need to run

LD_PRELOAD=/path_to_arnold/bin/libai.so usdview scene.usda

and this prevents the crashes

Core ticket: #8869

[nrusch]

This same issue also affects the procedural and Ndr discovery plugin.

[autodesk-oss-arnold-bot]

Issue synced internally to ARNOLD-13223

[cchampet]

Hello
At Superprod we do not use the workaround with LD_PRELOAD anymore (in maya), since we experienced some side effects with plugins shipped in maya.
Example with maya-2022.3 and mtoa-5.3.1 (on centos 7): we have a crash in maya while importing some fbx. Using ldd commands we can see that fbxmaya.so started to describe dependencies to mtoa, which probably leads to errors (not exactly the same version of dependencies ?).

We can provide additional info if it helps.

[cpichard]

Hi,
Thanks @cchampet, is usdview working with Arnold without the LD_PRELOAD workaround ? The other issue seems related to fbx, maya, mtoa and it might be worth reporting it in the dedicated forum.

[cchampet]

Hello @cpichard !
Indeed the workaround works on our case, with usdview (usd-21.11) and arnold_usd-7.2.1.0.
So yes, our issue is probably more related to fbx/maya/mtoa plugins. Nevertheless, do you have some perspectives to remove this LD_PRELOAD? (I'm always afraid of LD_PRELOAD in environment with many libraries involved)