crash when attaching new VRayMtl while using progressive CUDA

[frueter]

So far every time I have switched the renderer to progressive CUDA, then attached a VrayMtl node to one of my geo nodes upstream while the viewer is attached to teh VRayRender node, Nuke has crashed.
Can somebody verify that please?
Nuke 11.1v3 on Centos 7

[georgi.zhekov]

Hey,

Can you send us the log file? It's working correctly on our side.

[frueter]

I don't see anything in the terminal output, it just crashes with a core dump.
Oh, I forgot, this is with a GTX 1080ti in case it matters.

[Christophe.Cot]

Do you have the possibility to test that under GDB and let me know the callstack when this happens ?
Edit: Does it only happen in CUDA mode ? Not in Progressive CPU mode ?

[frueter]

Hi Christophe,

it does happen with progressive CPU as well. My steps that always lead to a crash (test scene attached):

1. set VrayRenderer to progressive of some sort
2. connect the viewer
3. while vray is updating the viewer, attach the material to the sphere
4. if Nuke hasn't crashed yet while vray is updating, detach the material again
5. repeat steps 4+5, Nuke will crash eventually

I'm happy to to run GDB is you can give me some instructions for how to do that.

Cheers,
frank

P.S.: I sett the debug level to 4, here is the last bit from the terminal before Nuke crashed:
[2018/May/16|16:34:19] VRayRenderer1 | Export completed in 3.07 ms
[2018/May/16|16:34:19] VRayRenderer1 | exportSettings : 0.60 ms [ 19.4% ]
[2018/May/16|16:34:19] VRayRenderer1 | exportLights : 0.35 ms [ 11.3% ]
[2018/May/16|16:34:19] VRayRenderer1 | exportSceneCamera : 0.07 ms [ 2.2% ]
[2018/May/16|16:34:19] VRayRenderer1 | exportNodes : 1.71 ms [ 55.6% ]
[2018/May/16|16:34:19] VRayRenderer1 | exportDependentSettings : 0.09 ms [ 2.9% ]
[2018/May/16|16:34:19] VRayRenderer1 | exportSelectors : 0.00 ms [ 0.0% ]
[2018/May/16|16:34:19] VRayRenderer1 | exportVRScenes : 0.00 ms [ 0.0% ]
[2018/May/16|16:34:19] VRayRenderer1 | Scene/plugins rescan : 0.26 ms [ 8.5% ]
[2018/May/16|16:34:19] VRayRenderer1 | RendererOp::close watchdog already armed
[2018/May/16|16:34:20] VRayRenderer1 | Clearing ray server.
[2018/May/16|16:34:20] VRayRenderer1 | Clearing geometry.
[2018/May/16|16:34:20] VRayRenderer1 | Number of light evaluations: 0 (0.00 per pixel)
[2018/May/16|16:34:20] VRayRenderer1 | DELETING A NON_EXISTENT_MATERIAL 'DefaultMtl@diffuse' ID=22!
[2018/May/16|16:34:20] VRayRenderer1 | [PluginManagerUtilsBase::deletePluginAndParamsNonRe cursive] instanceID=22 0x7f462c05e1c0
[2018/May/16|16:34:20] VRayRenderer1 | [PluginManagerUtilsBase::deletePluginAndParamsNonRe cursive] instanceID=21 0x7f462c0741f0
[2018/May/16|16:34:20] VRayRenderer1 | Preparing ray server.
[2018/May/16|16:34:20] VRayRenderer1 | Partial rayserver rebuild. Took 0.000 ms.
[2018/May/16|16:34:20] VRayRenderer1 | Scene bounding box is [-0.994522,-1,-1]-[0.994522,1,1]
[2018/May/16|16:34:20] VRayRenderer1 | 1 lights found.
[2018/May/16|16:34:20] VRayRenderer1 | Using probabilistic light evaluation with 8 lights.
[2018/May/16|16:34:20] VRayRenderer1 | Number of lights: 1
[2018/May/16|16:34:20] VRayRenderer1 | Scene contains 1 lights
[2018/May/16|16:34:20] VRayRenderer1 | 0 point lights transferred to device 0
[2018/May/16|16:34:20] VRayRenderer1 | Number of lights: 1
[2018/May/16|16:34:20] VRayRenderer1 | Total number of lights added by updateLights(): 0
[2018/May/16|16:34:20] VRayRenderer1 | Total memory allocated with oclbufman: 1510696
[2018/May/16|16:34:20] VRayRenderer1 | Transfer updated data to devices. Took 0.009 ms.
[2018/May/16|16:34:20] VRayRenderer1 | Transferring uvwBases channels for geom type 0
[2018/May/16|16:34:20] VRayRenderer1 | Transferring uvwBases channels for geom type 1
[2018/May/16|16:34:20] VRayRenderer1 | Transferring uvwBases channels for geom type 2
[2018/May/16|16:34:20] VRayRenderer1 | Irradiance sample size is 84 bytes
[2018/May/16|16:34:20] VRayRenderer1 | Using fast GI when possible
[2018/May/16|16:34:20] VRayRenderer1 | Photon size is 56 bytes.
[2018/May/16|16:34:20] VRayRenderer1 | Light cache sample size is 136 bytes.
[2018/May/16|16:34:20] VRayRenderer1 | Prefiltering light cache.
[2018/May/16|16:34:20] VRayRenderer1 | Average rays per light cache sample: -nan (min 2147483647, max 0)
[2018/May/16|16:34:20] VRayRenderer1 | Mtls 6.77MB, Geo 0.22MB, Lights 0.00MB, LightCache 0.08MB, Other 129.96MB (data index 133)
[2018/May/16|16:34:20] VRayRenderer1 | End applyChangesToScene(). Number of changes 69. Took 1.968 ms. Change processing 0.130 ms
[2018/May/16|16:34:22] VRayRenderer1 | Noise threshold lowered to 0.142857 with 20.5 percent active pixels.
[2018/May/16|16:34:23] VRayRenderer1 | GPU adaptive lights v1 built successfully
[2018/May/16|16:34:23] VRayRenderer1 | Noise threshold lowered to 0.090909 with 2.2 percent active pixels.
[2018/May/16|16:34:24] VRayRenderer1 | Noise threshold lowered to 0.052632 with 7.4 percent active pixels.
[2018/May/16|16:34:24] VRayRenderer1 | Prepare New Render (VRayRenderer1)
[2018/May/16|16:34:24] VRayRenderer1 | Exporting scene
[2018/May/16|16:34:24] VRayRenderer1 | 1 - Copied: settingsDefaultDisplacement
[2018/May/16|16:34:24] VRayRenderer1 | 1 - Copied: settingsRegionsGenerator
[2018/May/16|16:34:24] VRayRenderer1 | 1 - Copied: settingsCaustics
[2018/May/16|16:34:24] VRayRenderer1 | 1 - Copied: settingsColorMapping
[2018/May/16|16:34:24] VRayRenderer1 | 1 - Copied: settingsOutput
[2018/May/16|16:34:24] VRayRenderer1 | 1 - Copied: vraySettingsUnitsInfo
[2018/May/16|16:34:24] VRayRenderer1 | 1 - Copied: settingsDMCSampler
[2018/May/16|16:34:24] VRayRenderer1 | 1 - Copied: settingsOptions
[2018/May/16|16:34:24] VRayRenderer1 | 1 - Copied: settingsRaycaster
[2018/May/16|16:34:24] VRayRenderer1 | 1 - Copied: settingsRenderChannels
[2018/May/16|16:34:24] VRayRenderer1 | 1 - Copied: settingsCameraDof
[2018/May/16|16:34:24] VRayRenderer1 | 1 - Copied: settingsMotionBlur
[2018/May/16|16:34:24] VRayRenderer1 | 1 - Copied: settingsGI
[2018/May/16|16:34:24] VRayRenderer1 | 1 - Copied: settingsDMCGI
[2018/May/16|16:34:24] VRayRenderer1 | 1 - Copied: light_VRayLightDome1
[2018/May/16|16:34:24] VRayRenderer1 | 1 - Copied: MainCamera_SettingsCamera
[2018/May/16|16:34:24] VRayRenderer1 | 1 - Copied: MainCamera_RenderView
[2018/May/16|16:34:24] VRayRenderer1 | 1 - Copied: mesh_Sphere1
[2018/May/16|16:34:24] VRayRenderer1 | [PluginManagerUtilsBase::newPlugin] non-existing - instance ID=28, plugin type is "MtlSingleBRDF", plugin name is "Black_in_root_mtlsingle" 0x7f46200db2b0
[2018/May/16|16:34:24] VRayRenderer1 | Exported plugin Black_in_root_mtlsingle
[2018/May/16|16:34:24] VRayRenderer1 | [PluginManagerUtilsBase::newPlugin] non-existing - instance ID=29, plugin type is "BRDFDiffuse", plugin name is "DefaultMtl@diffuse" 0x7f46200dad00
[2018/May/16|16:34:24] VRayRenderer1 | Exported plugin DefaultMtl@diffuse
[2018/May/16|16:34:24] VRayRenderer1 | 1 - Copied: node_Sphere1
[2018/May/16|16:34:24] VRayRenderer1 | 1 - Copied: settingsImageSampler
[2018/May/16|16:34:24] VRayRenderer1 | 1 - Copied: settingsEnvironment
[2018/May/16|16:34:24] VRayRenderer1 | Removed plugin: VRayMtl1
[2018/May/16|16:34:24] VRayRenderer1 | [PluginManagerUtilsBase::deletePluginAndParams] instanceID=27 0x7f4634123ff0
[2018/May/16|16:34:24] VRayRenderer1 | [PluginManagerUtilsBase::setParamObject] Replaced plugin 27(0x7f4634123ff0) with plugin -1((nil)) in 26.brdf
[2018/May/16|16:34:24] VRayRenderer1 | [PluginManagerUtilsBase::deletePlugin] instanceID=27, plugin type is "BRDFVRayMtl", plugin name is "VRayMtl1" plugin=0x7f4634123ff0
[2018/May/16|16:34:24] VRayRenderer1 | Removed plugin: VRayMtl1_mtlsingle
[2018/May/16|16:34:24] VRayRenderer1 | [PluginManagerUtilsBase::deletePluginAndParams] instanceID=26 0x7f463410fc80
[2018/May/16|16:34:24] VRayRenderer1 | [PluginManagerUtilsBase::deletePlugin] instanceID=26, plugin type is "MtlSingleBRDF", plugin name is "VRayMtl1_mtlsingle" plugin=0x7f463410fc80

[Christophe.Cot]

Hi Frank,
You won't need to run gdb on your end as I managed to reproduce this random crash.
Let me some time to look into it and see how to fix it.

[frueter]

Ah, great news, thanks Christophe!

[Christophe.Cot]

Frank,
The fix will be available in tomorrow's nightly build (ref 3.71.02)
Please confirm once you test it that everything is fine.
Thank you for reporting it.
Chris

[frueter]

nice, will keep an eye out for it...

[frueter]

just confirming that 3.71.02 does fix the crashing, thank you!