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Old 03-06-11, 03:39 AM   #1
tecknurd
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Join Date: Mar 2011
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Default nvidia module 260.19.36 compiles with out MMX/SSE on Core 2 Duo

When I compile nVidia module version 260.19.36 it always compiles with out MMX/SSE instructions. I tried doing 'make oldconfig && make prepare' in the kernel source directory and it does not help. The Linux distribution that I am using is Gentoo. The kernel version is 2.6.36. The nVidia module compiles just fine, but I think I am loosing some performance. Previous nVidia module versions like the 195.xx compiles with MMX/SSE.

I am using a 32-bit install and not a 64-bit install. Other programs compile with MMX and/or SSE with out any problems. My computer is a Core 2 Duo T7300 and a GeForce8 8400M GS. During the compiling for 260.19.36, the CFLAGS are "-mno-sse -mno-mmx -mno-sse2" which I did not specify.

OpenGL works and VDPAU works. VDPAU works better with this version than the previous versions.

Is there any program or library that I have to upgrade to or is there anything that I missed.
Attached Files
File Type: gz nvidia-bug-report.log.gz (46.5 KB, 54 views)
File Type: gz kernel-config.gz (20.3 KB, 50 views)
File Type: gz gentoo-nvidia-drivers-install.log.gz (37.4 KB, 52 views)
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Old 03-06-11, 07:46 AM   #2
artem
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Default Re: nvidia module 260.19.36 compiles with out MMX/SSE on Core 2 Duo

Doesn't anything work for you? Do you perceive any slowdowns? I fail to see any problems here, because what you build is just a thin layer for kernel interaction, the blob is precompiled on NVIDIA side/site.
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Old 03-06-11, 11:35 AM   #3
Dragoran
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Default Re: nvidia module 260.19.36 compiles with out MMX/SSE on Core 2 Duo

That's nonsense ... the part that you compile does not have any performance critical code paths and besides floating point is a no go in kernel space.
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Old 03-07-11, 02:18 AM   #4
tecknurd
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Default Re: nvidia module 260.19.36 compiles with out MMX/SSE on Core 2 Duo

OK, I keep it as is since it works with out any noticeable problems for OpenGL and VDPAU.
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