Patches Published For Nouveau Compute Support On Kepler

[phoronix]

Phoronix: Patches Published For Nouveau Compute Support On Kepler

Samuel Pitoiset continues carrying out compute miracles for the open-source Nouveau NVIDIA Linux graphics driver stack...

http://www.phoronix.com/scan.php?page=news_item&px=Nouveau-Compute-Kepler-P

[theriddick]

At this pace Nvidia may catch AMD OSS drivers or even surpass them. I do hope these open-source drivers can make some very good performance improvements over the coming months. I run a 390x and refuse to touch FGLRX again, however there is a bug in the mesa drivers which prevents most games from working (seg faults) however I managed to fix it by recompiling latest mesa-11.3-dev branch.

If anyone else suffers the infamous seg-faults when using the AMD open-source driver and wishes me to post the fix let me know (I'm thinking most people already compile their own MESA anyway).

[bridgman]

Glad you found a fix. I guess main question is whether the bug ticket contains the info ?

[theriddick]

I really don't know the EXACT specifics of what the problem was but reconfiguring with the below command got Warthunder going, however ARMA3 and ARK still crash once you try to enter a actual game (ARMA3 somehow survives rendering the action main menu however.....)

./autogen.sh --prefix=/usr --enable-texture-float --libdir=/usr/lib/x86_64-linux-gnu/ --with-gallium-drivers=nouveau,radeonsi,r600 --with-egl-platforms=drm,x11 --enable-glx-tls --enable-shared-glapi --enable-glx --enable-driglx-direct --enable-gles1 --enable-gles2 CFLAGS="-O3 -fno-inline-small-functions" CXXFLAGS="-O3 -fno-inline-small-functions"

[boffo]

At this pace Nvidia may catch AMD OSS drivers or even surpass them. I do hope these open-source drivers can make some very good performance improvements over the coming months. I run a 390x and refuse to touch FGLRX again, however there is a bug in the mesa drivers which prevents most games from working (seg faults) however I managed to fix it by recompiling latest mesa-11.3-dev branch.

If anyone else suffers the infamous seg-faults when using the AMD open-source driver and wishes me to post the fix let me know (I'm thinking most people already compile their own MESA anyway).

You can also use the latest verion of mesa using the pontostoy docker. Check http://www.gearsongallium.com/?p=2708

[imirkin]

At this pace Nvidia may catch AMD OSS drivers or even surpass them.

If you look at GL features alone, nouveau tends to be on par or ahead of radeon most of the time. However radeon kernel drivers vastly outshine nouveau in terms of stability (mostly the ability to recover in some way) and speed (the amd team does perf analysis and improves their driver based on it), not to mention the fact that radeon kernel driver does automatic reclocking, whereas nouveau can barely get manual reclocks right, on a subset of GPUs.

[bridgman]

./autogen.sh --prefix=/usr --enable-texture-float --libdir=/usr/lib/x86_64-linux-gnu/ --with-gallium-drivers=nouveau,radeonsi,r600 --with-egl-platforms=drm,x11 --enable-glx-tls --enable-shared-glapi --enable-glx --enable-driglx-direct --enable-gles1 --enable-gles2 CFLAGS="-O3 -fno-inline-small-functions" CXXFLAGS="-O3 -fno-inline-small-functions"

Ahh, that one. I ran across it while searching for "segfault" tickets against Mesa. Thanks !