[Bf-committers] Blender support for shader mdoel 6.0

Martijn Berger martijn.berger at gmail.com
Mon Feb 8 12:00:54 CET 2016

HI Nadir,

I would expect some version of cuda 7.5 or 8.0 to offer sm_60 support (
which i presume is pascal ? ).  There are some plans for falling back onto
PTX when precompiled kernels do not match the requested feature-set of the
available hardware.  But due to the size and complexity of our kernel that
needs a bit of extra work as ptxas will likely chew on those files for a
non trivial time rendering blender unresponsive, which we need to handle
before adding ptx fallback kernel support.

If you have the possibility of enabling us to test with a version of the
cuda toolkit that can generate the needed binaries feel free to contact
Thomas. Sergey or myself directly.


On Mon, Feb 8, 2016 at 7:56 AM, Nadir Cazi <ncazi at nvidia.com> wrote:

> Hi,
>    We are facing an error in our internal testing while rendering using
> Blender, with our latest chip running Shader Model 6.0.
> >> "cuda binary kernal for this graphics card  compute capability 6.0 not
> found"
>    We see app creates context, checks for sm version, and then destroys
> the context and quits.
>     Does Blender NOT support shader model 6.0? If so, are there any
> immediate plans to support it?
> Thanks and regards,
> Nadir Cazi,
> Nvidia Graphics
> P.S.: Exact steps to reproduce error:
> 1. Launch Blender app, double click to open.
> 2. Click on file > Open > select any project by traversing to the path it
> is saved.
> 3. Go to File > User Preference > System, select CUDA under "Compute
> Device".
> 4. Close User Preference.
> 5. Click on the Render option (small camera icon) toward the right view.
> 6. There should be a "Device" drop-down option, which is defaulted to
> "CPU", change that to "GPU Compute".
> 7. Render the active scene by clicking the render option, which is the
> button with the small camera with the word "Render" next to it. It's the
> first button from the "Render" pane.
> Observations:
> 1. Failed with error "cuda binary kernal for this graphics card compute
> capability 6.0 not found" error after clicking on render button
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