Crash every second rendering

[Micha]

Hi,

today I enabled NVlink of my two 2080ti for testing NVlink and VfR. But it was not working like expected. So disabled SLI again, but now I can render one image only and if I start the next one, than I get a crash after a short while. Restarting Rhino helps for one rendering.

I removed the NVlink from the cards, updated the driver to the current recommended driver ... but nothing helps. This can be found at the progress window:

D:\cgrepo\vraysdk\samples\vray_plugins\rt_private\ rt_opencl_pri(1715) : CUDA error 700

D:\cgrepo\vraysdk\samples\vray_plugins\rt_private\ rt_opencl_pri(2059) : CUDA error 700

Sidenote: at my computer D:\cgrepo.. doesn't exist.

Any ideas what I can do to prevent the crashes?

-Micha

[Micha]

Here the full progress window info:

Preparing renderer...

Creating bitmap manager

Bitmap manager created.

Scanning scene for light plugins.

9 lights found.

Using full light evaluation

Light tree is enabled with clamp coefficient 0.1 and even split coefficient 0.5.

CUDA renderer requested.

CUDA renderer plugin already loaded.

CUDA renderer plugin instance successfully created.

EXT_RTOPENCL interface obtained successfully from CUDA renderer plugin instance.

Using low thread priority.

Max ray intensity is enabled: rendered result may have incorrect brightness.

Estimated progressive buffer memory usage of 2644 MB is over the limit of 2048 MB. Falling back to per-pixel filtering.

Dome light resolution increased from 512 to 2048 for light "/Dome Light"

Bitmap file "C:\Program Files\Chaos Group\V-Ray\V-Ray for Rhinoceros\RhinoDefault.exr" loaded.

Dome light resolution increased from 512 to 2048 for light "/Dome Light#1"

Using Embree ray tracing.

SDTree statistics:

Total number of faces stored: 747523

Max tree depth: 42

Average tree depth: 24.9892

Number of tree nodes: 333801

Number of tree faces: 2202549

Number of tree leaves: 143607

Average faces/leaf: 15.3373

Memory usage: 92.27 MB

Building static SD trees took 176 milliseconds

Running RTEngine

Initializing CUDA renderer...

Initializing environment kernel

Number of CUDA devices: 2

nVidia driver version: 441.28

Min shading rate set to : 6

Building trees for 6 meshes with all threads per mesh took 0ms.

BVH statistics:

Primitives count: 6 (Mem usage:0.00 MB)

Meshes count: 6 (Mem usage:0.00 MB)

Tree depth: 4

Number of tree nodes: 11

Tree takes 0.58 MB. Build time 0.21 ms.

GPU tex loaded RhinoDefault.exr (idx=0) mip 0, w 1024/1024, h 512/512, channels 3, 3072KB

Texture "/Boden/Base/V-Ray BRDF/Bulge" is not supported and will be baked.

Bitmap file "D:\Projekte\...\tex\CHERRY270x240 03.png" loaded.

Bitmap file "D:\Texturen\Haut Leder\Leder-braungrau-02.png" loaded.

GPU tex loaded Leder-braungrau-02.png (idx=3) mip 0, w 2000/2000, h 2000/2000, channels 3, 11718KB

GPU tex loaded wood-095_mahogany-american-1-D2s.png (idx=2) mip 0, w 2000/2000, h 2000/2000, channels 3, 11718KB

GPU tex loaded Leder-ws.png (idx=4) mip 0, w 2000/2000, h 2000/2000, channels 1, 3906KB

GPU tex loaded CHERRY270x240 03.png (idx=1) mip 0, w 3927/3927, h 3490/3490, channels 3, 40152KB

Scene contains 8 lights

Enabled Light Tree on GPU

Building light cache.

Tracing 1000000 image samples for light cache in 64 passes.

Using 99.26 MB for light cache preview buffer

Merging light cache passes.

Light cache contains 3784 samples.

Light cache base memory usage is 0.6 MB.

Using premultiplied light cache.

Lightmap successfully loaded.

GPU light cache: 5405 samples stored.

Mtls 76.98MB, Geo 70.21MB, Lights 160.00MB, LightCache 0.08MB, Reserved 3.11MB (data index 18327)

Building optimized CUDA kernel (0) for comp cap 7.5 for device 0...

PTX file generated with CUDA Toolkit v10.0 for CUDA compute capability 3.0. CUDA runtime version 7050.

Optimized CUDA kernel assembled successfully

Total memory for device 0 : 11264 MB, free 8199 MB

Building optimized CUDA kernel (0) for comp cap 7.5 for device 1...

PTX file generated with CUDA Toolkit v10.0 for CUDA compute capability 3.0. CUDA runtime version 7050.

Optimized CUDA kernel assembled successfully

Total memory for device 1 : 11264 MB, free 7505 MB

Progressive sampling base buffer memory usage: 434.14 MB

D:\cgrepo\vraysdk\samples\vray_plugins\rt_private\rt_opencl_pri(1715) : CUDA error 700

D:\cgrepo\vraysdk\samples\vray_plugins\rt_private\rt_opencl_pri(2059) : CUDA error 700

Closing RTEngine (cancelled)

Max. Mpaths per second: 0.000000

Sampling level reached: 64 samples per pixel

V-Ray GPU kernel render time: 36.76s

Total GPU samples 526363648

Mtls 76.98MB, Geo 70.21MB, Lights 160.00MB, LightCache 0.08MB, Reserved 2814.80MB

Device 0 statistics:

GPU time: 90.591438 %

GPU ray trace time 96.538289 %

Transfer to GPU time 0.246350 %

Transfer from GPU time 3.215361 %

Device 1 statistics:

GPU time: 90.618499 %

GPU ray trace time 96.511315 %

Transfer to GPU time 0.220322 %

Transfer from GPU time 3.268362 %

Number of raycasts: 7408205 (2.29 per pixel)

Camera rays: 1000365 (0.31 per pixel)

Shadow rays: 5080670 (1.57 per pixel)

GI rays: 1873125 (0.58 per pixel)

Reflection rays: 431175 (0.13 per pixel)

Refraction rays: 55009 (0.02 per pixel)

Unshaded rays: 0 (0.00 per pixel)

Number of light evaluations: 10603728 (3.27 per pixel)

Maximum memory usage for resman: 0.00 MB

Number of intersectable primitives: 747525

SD triangles: 747523

MB triangles: 0

Static primitives: 0

Moving primitives: 0

Infinite primitives: 2

Static hair segments: 0

Moving hair segments: 0

Cleaning up bitmap manager

Maximum memory usage for texman: 0.00 MB

[a7az0th]

Hi Micha,

Could you send a scene for us to investigate?

[slavcho.brusev]

Hello Micha,

Thank you for reporting this!
Our Dev team has already made an improvement preventing this error from appearing.
This will be most likely implemented in the next update for V-Ray for Rhino.