Distributed Rendering Error

[MikeFlynn]

Hello,

Currently using Vray 5.10.20 on Maya 2020.4 with distributed rendering. Our render nodes are all Vray 5.10.20 installed on Linux CentOS. All errors and issues are solely when using Distributed Rendering.

We receive the following error from the network render nodes anytime a scene is rendered with an OSL shader and with "transfer missing assets" checked on:
// Error: line 1: V-Ray : Cannot send asset Error opening file: [PFileStream::Open] -1: Empty file name [RenderClient::getStream] //

Any scene without an OSL shader does not prompt the above error.

Any scene rendered with the OSL shader and "transfer missing assets" unchecked, we receive errant pixel results (as-if the network nodes are ignoring the OSL shader) first documented here:
https://forums.chaos.com/forum/v-ray...uted-rendering

Many Thanks in advance and any help is much appreciated

[hermit.crab]

Do you apply the VRAY_OSL_PATH_MAYA2022 environment variable on your slaves, as mentioned in the linked thread, prior to rendering? Could you share the scene (a simple object with the OSL shader should do)?

[MikeFlynn]

Many Thanks for the help!
Yes, we applied the VRAY_OSL_PATH_MAYA2020 environment variable on our slaves, (though it's the Maya 2020, not 2022, variable).

These are the Vray variables on the render nodes, which includes the OSL variable for Maya 2020

[render@cu-centos-render-01 ~]$ export | grep VRAY
declare -x VRAY_FOR_MAYA2020_MAIN="/usr/autodesk/maya2020/vray"
declare -x VRAY_FOR_MAYA2020_PLUGINS="/usr/autodesk/maya2020/vray/vrayplugins"
declare -x VRAY_OSL_PATH_MAYA2020="/usr/ChaosGroup/V-Ray/Maya2020-x64/opensl"
declare -x VRAY_SEND_FEEDBACK="0"
declare -x VRAY_TOOLS_MAYA2020="/usr/ChaosGroup/V-Ray/Maya2020-x64/bin”

[hermit.crab]

Sorry for the late reply. Could you send us a simple scene so we can test it out? Use the contact form here.