RT working in CPU not GPU

[vlado]

This does not depend on the scene at all; it is done just the first time to compile the OpenCL code. The time depends on the graphics card and the driver version. Older (non-Fermi) cards and older drivers (f.e. the quadro drivers) might take a very long time. Will see if we can put a precompiled version of the code somewhere.

Best regards,
Vlado

[LQ2]

Can I ask a perhaps silly question... Do you know what the significance is of the driver numbers for the nVidia drivers? I presumed that it was the higher the number the more recent/up-to-date, but this last time I've looked there are much higher numbered driver versions that were released earlier in the year. Should I be looking at the release date, the version number, or indeed just using the latest versions that are recommended?

I've still had no joy trying to get the openCL thing to build

I'll keep trying.

[rikou]

...I've still had no joy trying to get the openCL thing to build
I'll keep trying.

I just upgrade to 2.20.02 (from 1.5 SP6 !) and I have to say...Wooow ! great great great !
but as LQ2, I have the same problem... (Is it ok for you now ?)
No problem with CPU but not GPU... All seems to be right until "Building OpenCL trace program..." and after loooong time, vraystand alone crash.
Ok, for the moment, I just tried with the old driver 263.15, I'll try with the last 285.62 for my GTX460 and I'll cross my fingers

[RobPhoboS]

No, we won't make it unfortunately; the 3ds Max release happened a bit later than originally planned and everyone is away next week. But it will be the first thing we will work on in January.

Best regards,
Vlado

Good to know, although I haven't had time recently to continue my testing with vray, although I have an almighty render in the pipeline for it though

There are still the nightly builds if you want to try a particular feature.

Best regards,
Vlado

I didn't get a reply to my initial email about a nightly build, I thought perhaps it was because the next release was due.

[Alan Iglesias]

Ok, for the moment, I just tried with the old driver 263.15, I'll try with the last 285.62 for my GTX460 and I'll cross my fingers

If this doesn't work for you, you might want to try the 290.xx beta drivers, which are up on the nVidia site and do support the GTX 460, according to the supported hardware list. I say this because, since the new Vray release, these drivers have been working well with RT/GPU here and elsewhere.

Also, if you are working with 6GB RAM or less, you may have issues with the initial OCL compile as it does takes quite a bit of RAM to complete.

Hope this helps,

-Alan

[rikou]

Hi ,
Thx for your advice Alan.
All is fine now. And I have to say it's a real pleasure...
First (and I don't know why !), I tried with the 275.33 driver...the compile Open Cl code took 1hour... After that, I downloaded the last driver from Nvidia site.. the last one for the GTX 460 is the 285.62.. and then It took 1min to compile the code.. Now RT GPU works fine.

Now as you said, I saw that the 290.xx support the GTX 460.. I have only 8Gb RAM but I think the compile could be done fine even if I'm thinking to add 8Gb RAM, 16 Go become necessary

Anyway, could I expect to have a real gain between the official 285.62 and the 290.53 ?

[Alan Iglesias]

Anyway, could I expect to have a real gain between the official 285.62 and the 290.53 ?

Hmmm...that would be a question for Vlado, but I can tell you that recent RT/GPU builds have optimizations which made RT/GPU 17% faster here with the latest drivers (the same build that is slower and takes more RAM to compile), and those of course were the 290.xx ones. You might do some benchmarking and give them a shot...

And you should be good with the 8GB for the compile, I think. I did it here with 6GB, but it did take a while.

Best,

-Alan

PS - Your english is fine!

[rikou]

Ok, thanks
I'll give a try !
cheers

[theedge]

I updated one of my workstations to vray 2.2 today. Looks like I have the same problem with vray-RT hanging on "Building OpenCL trace program ...". It's been running for 50 minutes now and still no sign of life...

The workstation is a dual xeon with 24GB RAM and a quadro 4000. Any recommendations for a working driver version for the quadros ?

Thank you.

EDIT : after a little more than an hour the building finally succeeded. That's insanely slow !!

[Kergnob]

am having the same problem. Updated from 2 to 2.2 and lost ability to RT on GPU (except in my case it's a 5700 ATI instead of an nvidia). Tried rolling back vray to 2 again and it would crash each time I ran it. Reinstalled drivers (11.11) and vray 2.2 and still no go as far as running VrayRT for GPU. All I have to work on is a black screen and "waiting for image data..."

BEFORE I reinstalled drivers, 2.2 with GPU render was rendering the whole scene black except for lights

It would also seem that I have lost the ability to see the log (that would pop up when rendering). So I can't send / see what exactly is happening with the render.

Windows 7 64 bit, ATI 5700GT. I know i'm running a single GPU but it was working before updating to 2.2

Thanks for taking a look into this

[vlado]

Reinstalled drivers (11.11)

These seem rather old; have you tried newer drivers?

It would also seem that I have lost the ability to see the log (that would pop up when rendering).

Do you see vray.exe in the Task Manager (make sure that "Show processes from all users" is enabled)? If yes, you probably registered the V-Ray RT render server to run as a Windows service. In that case you can try unregistering it (from the Start menu), killing vray.exe and trying a new RT render.

Best regards,
Vlado

[Kergnob]

YES now I have my log back. I updated my ATI drivers to latest (11.12) and the GPU Render still is coming out black (except lights) while CPU RT works fine. Here is the log; hope somewhere in there is an answer.



Thanks again

[tobihofer]

I updated one of my workstations to vray 2.2 today. Looks like I have the same problem with vray-RT hanging on "Building OpenCL trace program ...". It's been running for 50 minutes now and still no sign of life...

The workstation is a dual xeon with 24GB RAM and a quadro 4000. Any recommendations for a working driver version for the quadros ?

Thank you.

EDIT : after a little more than an hour the building finally succeeded. That's insanely slow !!

Hi! Same problem here: Win 7 XP64, Dual Xeon, Quadro 4000, latest NVidia-drivers. After waiting 1 hour for building the OpenCL trace program, VRay-standalone crashes. Also when rendering with CPUs...

[vlado]

Hi! Same problem here: Win 7 XP64, Dual Xeon, Quadro 4000, latest NVidia-drivers. After waiting 1 hour for building the OpenCL trace program, VRay-standalone crashes. Also when rendering with CPUs...

If it crashes on CPU, then it's a different issue. Does it happen on any scene?

Best regards,
Vlado

[nbreslow]

RT working in CPU not GPU (Maya)

Hi All,

I am having the same issue with RT rendering on CPU and not GPU. The issue started after installing Vray for Maya 2.20.01 (just released). Basically the initial OpenCl build hangs - I have tried letting it run for 10 minutes, an hour, two hours...nothing worked. I am not sure if this is related, but I keep getting 'warning: Scene is empty' messages popping up on the Maya command line. The test scene isn't empty, it consists of a very simple sphere, plane, vrayMtl, vrayDomeLight. Initially I had the same issue with the previous stable build of Vray and, as another person posted, it magically fixed itself after a few attempts (although I may have added an environment variable too, can't remember exactly). No such luck here though - I tried for hours yesterday, very annoying.

One thing I noticed in the log is an undocumented environment variable that Vray says it can't find called VRAY_OPENCL_PLATFORMS_x64. Can someone shed some light on this? Perhaps setting it would help.

Also, I looked at the environment variables Vray setup on installation (I used the .exe, not the zip file) and under System Variables there is one called VRAY_PATH with no value associated. What should the path be? Is this by design? Not sure if the installer messed up.

See below for the log from the Vray/Maya command window and my system specs.

System Specs:

Maya 2012 SAP SP1 x64
OS Name    Microsoft Windows 7 Ultimate
Version    6.1.7601 Service Pack 1 Build 7601
System Type    x64-based PC
Processor    Intel(R) Xeon(R) CPU X5690  @ 3.47GHz, 4318 Mhz, 6 Core(s), 12 Logical Processor(s)
Processor    Intel(R) Xeon(R) CPU X5690  @ 3.47GHz, 4318 Mhz, 6 Core(s), 12 Logical Processor(s)
BIOS Version/Date    American Megatrends Inc. 080016, 7/5/2011
Installed Physical Memory (RAM)    24.0 GB
Available Physical Memory    20.1 GB
Total Virtual Memory    60.0 GB
Available Virtual Memory    55.7 GB
Name    NVIDIA Quadro 5000
PNP Device ID    PCI\VEN_10DE&DEV_06D9&SUBSYS_077010DE&REV_A3\6&2BCDCEE8&0&00000018
Adapter Type    Quadro 5000, NVIDIA compatible
Adapter RAM    (1,610,612,736) bytes
Driver Version    8.17.12.7642
Resolution    1920 x 1200 x 59 hertz
Driver    c:\windows\system32\drivers\nvlddmkm.sys (8.17.12.7642, 12.78 MB (13,403,456 bytes), 2/6/2012 4:30 PM)

Vray Command Window:

[2012/Feb/7|09:10:33] Reading configuration from "C:\Program Files\Autodesk\Maya
2012\vray\bin\/vrayconfig.xml"
[2012/Feb/7|09:10:33] ===============================================
[2012/Feb/7|09:10:33] V-Ray Standalone, version 2.20.01 for x64
[2012/Feb/7|09:10:33] Copyright (C) 2000-2010 Chaos Group Ltd. All rights reserv
ed.
[2012/Feb/7|09:10:33] Use -credits option for additional third-party copyright n
otices.
[2012/Feb/7|09:10:33]
[2012/Feb/7|09:10:33] Build from Feb  1 2012, 17:00:57
[2012/Feb/7|09:10:33] Compiled with Intel C++ compiler, version 12
[2012/Feb/7|09:10:33] Operating system is Microsoft(tm) Windows(tm), version 6.1
, Service Pack 1
[2012/Feb/7|09:10:33]
[2012/Feb/7|09:10:33] V-Ray core version is 2.00.01
[2012/Feb/7|09:10:33] ===============================================
[2012/Feb/7|09:10:33]
[2012/Feb/7|09:10:33] Loading plugins from "C:\Program Files\Autodesk\Maya2012/v
ray/vrayplugins/vray_*.dll"
[2012/Feb/7|09:10:33] 103 plugin(s) loaded successfully
[2012/Feb/7|09:10:33] Finished loading plugins.
[2012/Feb/7|09:10:33] Entering server mode - waiting for render requests on port
 20207. Press Ctrl+C to exit.
[2012/Feb/7|09:10:34] Starting DR session from 127.0.0.1
[2012/Feb/7|09:10:34] Receiving DR scene from 127.0.0.1
[2012/Feb/7|09:10:34] Reading scene file "C:\Users\NICHOL~1\AppData\Local\Temp\v
rscene.txt"
[2012/Feb/7|09:10:34] C:\Users\NICHOL~1\AppData\Local\Temp\vrscene.txt: done [ 0
h  0m  0.0s]
[2012/Feb/7|09:10:34] Scene file parsed successfully in 0.0 s.
[2012/Feb/7|09:10:34] Scene created successfully.
[2012/Feb/7|09:10:34] Objects in scene: 0
[2012/Feb/7|09:10:34] Starting render sequence.
[2012/Feb/7|09:10:34] Preparing renderer...
[2012/Feb/7|09:10:34] Preparing scene for rendering...: done [ 0h  0m  0.0s]

[2012/Feb/7|09:10:34] OpenCL renderer requested.
[2012/Feb/7|09:10:34] 1 plugin(s) loaded successfully
[2012/Feb/7|09:10:34] OpenCL renderer plugin successfully loaded from "C:\Progra
m Files\Autodesk\Maya2012\vray\bin\/rt_opencl.dll"
[2012/Feb/7|09:10:34] OpenCL renderer plugin instance successfully created.
[2012/Feb/7|09:10:34] EXT_RTOPENCL interface obtained successfully from OpenCL r
enderer plugin instance.
[2012/Feb/7|09:10:34] ========================
[2012/Feb/7|09:10:34] Starting frame 1.
[2012/Feb/7|09:10:34] warning: Camera FOV is too small, possible round-off error
s.
[2012/Feb/7|09:10:34] Preparing scene for frame...: done [ 0h  0m  0.0s]

[2012/Feb/7|09:10:34] Compiling geometry...: done [ 0h  0m  0.0s]

[2012/Feb/7|09:10:34] Building SDTree for GPU
[2012/Feb/7|09:10:34] warning: Scene is empty.
[2012/Feb/7|09:10:34] Running RTEngine
[2012/Feb/7|09:10:34] Initializing OpenCL renderer (single kernel version)...
[2012/Feb/7|09:10:34] Querying for OpenCL devices...
[2012/Feb/7|09:10:34] warning: Environment variable VRAY_OPENCL_PLATFORMS_x64 no
t found - using all available devices
[2012/Feb/7|09:10:34] Using the following OpenCL devices:
[2012/Feb/7|09:10:34] NVIDIA CUDA Quadro 5000
[2012/Feb/7|09:10:34] cl_nv_compiler_options supported!
[2012/Feb/7|09:10:34] Building OpenCL trace program for device NVIDIA CUDA_Quadr
o 5000...

Maya Command Window:

V-Ray: Starting render
[2012/Feb/6|13:54:25] V-Ray: Loading plugins from "C:\Program Files\Autodesk\Maya2012/vray/vrayplugins/vray_*.dll"
[2012/Feb/6|13:54:25] V-Ray: 103 plugin(s) loaded successfully
[2012/Feb/6|13:54:25] V-Ray: Finished loading plugins.
[2012/Feb/6|13:54:25] V-Ray: Exporting scene to V-Ray.
[2012/Feb/6|13:54:25] V-Ray: Parsing light links time  0h  0m  0.0s (0.0 s)
[2012/Feb/6|13:54:25] V-Ray: Translating scene geometry for V-Ray
[2012/Feb/6|13:54:25] V-Ray: Total time translating scene for V-Ray  0h  0m  0.0s (0.0 s)
[2012/Feb/6|13:54:25] V-Ray: Rendering with IPR (port 20207).
[2012/Feb/6|13:54:25] V-Ray: Updating frame at time 1.00
[2012/Feb/6|13:54:25] V-Ray: Total time updating frame  0h  0m  0.1s (0.1 s)
[2012/Feb/6|13:54:25] V-Ray: Render complete
[2012/Feb/6|13:54:25] V-Ray: ========================
[2012/Feb/6|13:54:25] V-Ray warning: [SettingsPNG] No image writer specified.
[2012/Feb/6|13:54:25] V-Ray warning: [SettingsJPEG] No image writer specified.
[2012/Feb/6|13:54:25] V-Ray warning: [SettingsSGI] No image writer specified.
[2012/Feb/6|13:54:25] V-Ray warning: [SettingsTIFF] No image writer specified.
[2012/Feb/6|13:54:25] V-Ray warning: [SettingsTGA] No image writer specified.
[2012/Feb/6|13:54:25] V-Ray warning: [SettingsEXR] No image writer specified.
[2012/Feb/6|13:54:25] V-Ray: Preparing renderer...
[2012/Feb/6|13:54:25] V-Ray: Preparing scene for rendering...
[2012/Feb/6|13:54:25] V-Ray: OpenCL renderer requested.
[2012/Feb/6|13:54:25] V-Ray warning: No scene found; cannot create OpenCL renderer plugin.
[2012/Feb/6|13:54:25] V-Ray: dr host: 127.0.0.1
[2012/Feb/6|13:54:25] V-Ray: Connected to render host 127.0.0.1:20207
[2012/Feb/6|13:54:25] V-Ray: Using 1 hosts for distributed rendering.
[2012/Feb/6|13:54:25] V-Ray: Preparing scene for frame...
[2012/Feb/6|13:54:25] V-Ray warning: Scene is empty.

Thanks,

-Nick Breslow