Rt gpu

[elementalcrafts]

Hi,

I just moved to Vray RT GPU and I am having a couple of problems. Here is my config: Windows 7 x64, Max 2012, Vray RT 2.20.02, one GTX 560 Ti, one GTX 580 (3 GB), driver version is Geforce 285.62

1. When I try to list the OpenCL devices using the 'Select OpenCl Devices for Vray RT' tool, the window shows completely blank.
2. I try a simple render, with plane, teapot and one Vray light. I turn on stats for Vray RT. I hit ActiveShade and the CPU immediately shoots to 100%, but the stats on the window show 'Engine: Vray Open CL (single kernel)'. The scene renders fine, but I am confused whether it is using the CPU or the GPU's?
3. Choosing VrayRT as production renderer doesnt work at all. The scene just hangs on 'Waiting for image data'.

Any ideas? Only thing unsual I can think of in my config is that Max is installed on the D drive, not C. Since I have small SSD disks, C wont hold all my stuff.

The server window shows a couple of errors as below:

[2012/Jan/10|00:11:24] Preparing scene for rendering...: done [ 0h 0m 0.0s]

[2012/Jan/10|00:11:24] OpenCL renderer requested.
[2012/Jan/10|00:11:24] 1 plugin(s) loaded successfully
[2012/Jan/10|00:11:24] OpenCL renderer plugin successfully loaded from "C:\Prog
am Files\Chaos Group\V-Ray\RT for 3ds Max 2012 for x64\bin\/rt_opencl.dll"
[2012/Jan/10|00:11:24] OpenCL renderer plugin instance successfully created.
[2012/Jan/10|00:11:24] EXT_RTOPENCL interface obtained successfully from OpenCL
renderer plugin instance.
[2012/Jan/10|00:11:24] ========================
[2012/Jan/10|00:11:24] Starting frame 0.
[2012/Jan/10|00:11:24] warning: Camera FOV is too small, possible round-off err
rs.
[2012/Jan/10|00:11:24] Preparing scene for frame...: done [ 0h 0m 0.0s]

[2012/Jan/10|00:11:24] Compiling geometry...: done [ 0h 0m 0.0s]

[2012/Jan/10|00:11:24] Building SDTree for GPU
[2012/Jan/10|00:11:24] warning: Scene is empty.
[2012/Jan/10|00:11:24] Running RTEngine
[2012/Jan/10|00:11:24] Initializing OpenCL renderer (single kernel version)...
[2012/Jan/10|00:11:24] VRAY_OPENCL_PLATFORM environment variable not specified;
using default platform
[2012/Jan/10|00:11:24] warning: clGetPlatformIDs() failed (-1001)
[2012/Jan/10|00:11:24] warning: getPlatformID() failed.
[2012/Jan/10|00:11:24] warning: initDevices() failed.
[2012/Jan/10|00:11:25] Number of raycasts: 0
[2012/Jan/10|00:11:25] Camera rays: 0
[2012/Jan/10|00:11:25] Shadow rays: 0
[2012/Jan/10|00:11:25] GI rays: 0
[2012/Jan/10|00:11:25] Reflection rays: 0
[2012/Jan/10|00:11:25] Refraction rays: 0
[2012/Jan/10|00:11:25] Unshaded rays: 0
[2012/Jan/10|00:11:25] Number of intersectable primitives: 0
[2012/Jan/10|00:11:25] SD triangles: 0
[2012/Jan/10|00:11:25] MB triangles: 0
[2012/Jan/10|00:11:25] Static primitives: 0
[2012/Jan/10|00:11:25] Moving primitives: 0
[2012/Jan/10|00:11:25] Infinite primitives: 0
[2012/Jan/10|00:11:25] Scene constructed in 0.0 seconds
[2012/Jan/10|00:11:25] Preparing renderer...
[2012/Jan/10|00:11:25] Preparing scene for rendering...: done [ 0h 0m 0.0s]

[2012/Jan/10|00:11:25] OpenCL renderer requested.
[2012/Jan/10|00:11:25] OpenCL renderer plugin already loaded.
[2012/Jan/10|00:11:25] OpenCL renderer plugin instance successfully created.
[2012/Jan/10|00:11:25] EXT_RTOPENCL interface obtained successfully from OpenCL
renderer plugin instance.
[2012/Jan/10|00:11:25] Preparing scene for frame...: done [ 0h 0m 0.0s]

[2012/Jan/10|00:11:25] Compiling geometry...: done [ 0h 0m 0.0s]

[2012/Jan/10|00:11:25] Building SDTree for GPU
[2012/Jan/10|00:11:25] Preparing ray server...: done [ 0h 0m 0.0s]

[2012/Jan/10|00:11:25] SDTree statistics:
[2012/Jan/10|00:11:25] Total number of faces stored: 5728
[2012/Jan/10|00:11:25] Max tree depth: 37
[2012/Jan/10|00:11:25] Average tree depth: 17.2157
[2012/Jan/10|00:11:25] Number of tree nodes: 3003
[2012/Jan/10|00:11:25] Number of tree faces: 13992
[2012/Jan/10|00:11:25] Number of tree leafs: 1136
[2012/Jan/10|00:11:25] Average faces/leaf: 12.3169
[2012/Jan/10|00:11:25] Memory usage: 1.79 MB
[2012/Jan/10|00:13:15] Closing RTEngine (cancelled)

[vlado]

It's still using the CPU; for whatever reason OpenCL support is not working on your machine. Things to try: reinstall the GPU drivers (make sure you restart the machine afterwards); download the "OpenCL device query" sample from the nVidia GPU computing SDK samples from here: http://developer.nvidia.com/opencl-sdk-code-samples (or any of the other samples) and see if they work properly.

Best regards,
Vlado

[RobPhoboS]

I also have a GTX 560 Ti that doesn't work with the current version of vray elementalcrafts. But I don't have access to the nightlies either so I'm praying it works with the big new update.
Cheers for the link vlado, might see what happens with my one.

[Alan Iglesias]

He's got the exact same configuration as I am running, with the 560Ti and the 580 together. He might try the 290.xx drivers as they are working so well here...

-Alan

[elementalcrafts]

Never mind. Installed the 290.53 drivers, but it wasnt the drivers, it was just me. I was working via Remote Desktop and that was causing the issue. All ok now that I am directly on the machine. Both GPU's clock in at 99% and the test scene renders in 2 mins! Thanks guys!

[Alan Iglesias]

Sounds good!

-Alan

[RobPhoboS]

New build and my card work - YEY