Re: [gentoo-user] NVidia-driver, RTX 2060 SUPER. Blender and NO Optix...

[J. Roeleveld]

On Saturday, April 4, 2020 6:45:58 AM CEST tuxic@××××××.de wrote:
> Hi,
>
> I have discussed this on www.blenderartists.org and they asked
> me to ask here to sort out, whether the problem is a Blender-thing,
> a Linux-thing or a GENTOO-thing.
>
> My setup is as follows:
> NVidia RTX 2060 SUPER
>
> NVidia-drivers:
> [I] x11-drivers/nvidia-drivers
>      Available versions:  (~)304.137-r1(0/304)^md[1]
> (~)340.107-r2(0/340)^md[1] 340.108(0/340)^mtd (~)375.82-r2(0/375)^md[1]
> (~)378.13-r5(0/378)^md[1] (~)381.22-r3(0/381)^md[1]
> (~)384.130-r1(0/384)^md[1] (~)387.34-r1(0/387)^md[1]
> (~)390.77-r1(0/390)^md[1] (~)390.87(0/390)^md[1] 390.132-r1(0/390)^mtd
> (~)390.132-r2(0/390)^mtd (~)396.24-r2(0/396)^md[1]
> (~)396.24.10-r1(0/396.24)^md[1] (~)396.45-r1(0/396)^md[1]
> (~)396.51-r1(0/396)^md[1] (~)396.51.02(0/396.51)^md[1]
> (~)396.54(0/396)^md[1] 430.64-r1(0/430)^mtd 435.21-r1(0/435)^mtd
> 440.64(0/440)^mtd {+X acpi compat +driver gtk3 +kms +libglvnd multilib
> pax_kernel static-libs +tools uvm wayland ABI_MIPS="n32 n64 o32"
> ABI_RISCV="lp64 lp64d" ABI_S390="32 64" ABI_X86="32 64 x32" KERNEL="FreeBSD
> linux"} Installed versions:  440.64(0/440)^mtd(03:03:25 AM 04/03/2020)(X
> driver kms libglvnd static-libs tools uvm -acpi -compat -gtk3 -multilib
> -wayland ABI_MIPS="-n32 -n64 -o32" ABI_RISCV="-lp64 -lp64d" ABI_S390="-32
> -64" ABI_X86="64 -32 -x32" KERNEL="linux -FreeBSD") Homepage:
> https://www.nvidia.com/
>      Description:         NVIDIA Accelerated Graphics Driver
>
> Blender 2.82a (stable) and
> Blender 2.83  (deveoper build)
>
> The NVidia RTX-cards offer a new feature called "Optix" which blender
> can use to speed up rendering and denoising.
>
> When Blender is started one choose "Optix" from the user
> Preferences->System tab and then the Optix-enabled devices of the
> system in question are shown.
> There is a similiar tab, if you want to use CUDA instead.
>
> The CUDA tab shows my graphics card and everything behaves as
> exsoected. Choosing "Optix" instead says "No Optix enabled
> device".
>
> Which is not quite right, since the RTX-cards are Optix enabled.
>
> In the thread on blenderartists there were two libs (?) mentioned (on
> a Ubuntu system, where the Optix thingie works), which I cannot
> find on my system:
>
>     + libnividia-compute
>     + libnivia-gl
>
> . Does Gentoo installs a differently packaged nvidia-driver?
> What is the source of those libraries?
>
> If someone got Optix running with blender on a RTX-card under GENTOO
> I woyld be very happy for any help! :)
>
> Cheers and stay healthy!
> Meino

I think the second one might be a typo (libnvidia instead of libnivia).

I find the following libnvidia-gl* libraries on my system:

lrwxrwxrwx 1 root root       26 Mar 27 10:00 /usr/lib64/libnvidia-glcore.so -> 
libnvidia-glcore.so.440.59
-rwxr-xr-x 1 root root 28661160 Mar 27 10:00 /usr/lib64/libnvidia-glcore.so.
440.59
lrwxrwxrwx 1 root root       24 Mar 27 10:00 /usr/lib64/libnvidia-glsi.so -> 
libnvidia-glsi.so.440.59
-rwxr-xr-x 1 root root   687304 Mar 27 10:00 /usr/lib64/libnvidia-glsi.so.
440.59
lrwxrwxrwx 1 root root       29 Mar 27 10:00 /usr/lib64/libnvidia-glvkspirv.so 
-> libnvidia-glvkspirv.so.440.59
-rwxr-xr-x 1 root root 11114264 Mar 27 10:00 /usr/lib64/libnvidia-
glvkspirv.so.440.59


(Eg: libnvidia-glcore, libnvidia-glsi, libnvidia-glvkspirv)

but not "libnvidia-compute"

I do find "libnvidia-compiler"


Might it be part of one of the nvidia toolkits?

--
Joost