decision support

[ONYX]

I think about operating system and graphics card to use Octane Render.
(Processor I want to use is Xeon W3530 with 6GB RAM - only OS and graphics cards related questions)

My test results are:
Ubuntu 64-bit (E8500 + 2GB RAM + 8800GTS 512) - Octane benchmark scene: 2.4 Mega samples / sec
Windows XP 32-bit (Xeon W3530 + 6 GB RAM + 8800GTS 512) - Octane benchmark scene: 2.4 Mega samples / sec
Windows XP 32-bit (Xeon W3530 + 6 GB RAM + FX580) - Octane benchmark scene: 0.54 mega samples / sec
(Half of the RAM is wasted on Win XP 32-Bit but I have problems to run Octane Render with Ubuntu 64-Bit on Xeon processor.)

1st Point of interest: new graphics card
What characteristics of the video card have the greatest impact on performance of Octane Render?
Number of cores? Memory Interface Width? Memory bandwidth? RAM on the graphics card? What have and what weighting?

2nd Point of interest: choice of operating system
How does the operating system affect performance of Octane Render?

3nd Point of interest: system RAM (depends on operating system)
How does the RAM affect performance of Octane Render?

Thanks for fast answers in advance.

[ONYX]

This error occures on Ubuntu 64 Bit 10.04 LTS with Xeon W3530 - maybe someone has an idea to solve that problem
-----------------
*** glibc detected *** ./octanedemo: malloc(): memory corruption: 0x00007f80a400c7f0 ***
======= Backtrace: =========
/lib/libc.so.6(+0x775b6)[0x7f80adc115b6]
/lib/libc.so.6(+0x7b6d8)[0x7f80adc156d8]
/lib/libc.so.6(__libc_malloc+0x6e)[0x7f80adc1658e]
/usr/lib/libGL.so.1(+0xa0851)[0x7f80afad8851]
======= Memory map: ========
00400000-02f12000 r-xp 00000000 08:06 1573820 /home/abc/Downloads/OctaneRender/octanedemo
03112000-0311e000 r--p 02b12000 08:06 1573820 /home/abc/Downloads/OctaneRender/octanedemo
0311e000-031cf000 rw-p 02b1e000 08:06 1573820 /home/abc/Downloads/OctaneRender/octanedemo
031cf000-031d5000 rw-p 00000000 00:00 0
03b5a000-03bcf000 rw-p 00000000 00:00 0 [heap]
7f80a4000000-7f80a403a000 rw-p 00000000 00:00 0
7f80a403a000-7f80a8000000 ---p 00000000 00:00 0
7f80a9676000-7f80a9677000 ---p 00000000 00:00 0
7f80a9677000-7f80a9e77000 rwxp 00000000 00:00 0
7f80a9e77000-7f80a9f1c000 rw-p 00000000 00:00 0
7f80a9f46000-7f80a9f4a000 r-xp 00000000 08:05 131003 /lib/libuuid.so.1.3.0
7f80a9f4a000-7f80aa149000 ---p 00004000 08:05 131003 /lib/libuuid.so.1.3.0
7f80aa149000-7f80aa14a000 r--p 00003000 08:05 131003 /lib/libuuid.so.1.3.0
7f80aa14a000-7f80aa14b000 rw-p 00004000 08:05 131003 /lib/libuuid.so.1.3.0
7f80aa14b000-7f80aa162000 r-xp 00000000 08:05 264656 /usr/lib/libICE.so.6.3.0
7f80aa162000-7f80aa361000 ---p 00017000 08:05 264656 /usr/lib/libICE.so.6.3.0
7f80aa361000-7f80aa362000 r--p 00016000 08:05 264656 /usr/lib/libICE.so.6.3.0
7f80aa362000-7f80aa363000 rw-p 00017000 08:05 264656 /usr/lib/libICE.so.6.3.0
7f80aa363000-7f80aa366000 rw-p 00000000 00:00 0
7f80aa366000-7f80aa36e000 r-xp 00000000 08:05 264685 /usr/lib/libSM.so.6.0.1
7f80aa36e000-7f80aa56d000 ---p 00008000 08:05 264685 /usr/lib/libSM.so.6.0.1
7f80aa56d000-7f80aa56e000 r--p 00007000 08:05 264685 /usr/lib/libSM.so.6.0.1
7f80aa56e000-7f80aa56f000 rw-p 00008000 08:05 264685 /usr/lib/libSM.so.6.0.1
7f80aa56f000-7f80aa574000 r-xp 00000000 08:05 264702 /usr/lib/libXdmcp.so.6.0.0
7f80aa574000-7f80aa773000 ---p 00005000 08:05 264702 /usr/lib/libXdmcp.so.6.0.0
7f80aa773000-7f80aa774000 r--p 00004000 08:05 264702 /usr/lib/libXdmcp.so.6.0.0
7f80aa774000-7f80aa775000 rw-p 00005000 08:05 264702 /usr/lib/libXdmcp.so.6.0.0
7f80aa775000-7f80aa777000 r-xp 00000000 08:05 264691 /usr/lib/libXau.so.6.0.0
7f80aa777000-7f80aa977000 ---p 00002000 08:05 264691 /usr/lib/libXau.so.6.0.0
7f80aa977000-7f80aa978000 r--p 00002000 08:05 264691 /usr/lib/libXau.so.6.0.0
7f80aa978000-7f80aa979000 rw-p 00003000 08:05 264691 /usr/lib/libXau.so.6.0.0
7f80aa979000-7f80aa9d7000 r-xp 00000000 08:05 264730 /usr/lib/libXt.so.6.0.0
7f80aa9d7000-7f80aabd7000 ---p 0005e000 08:05 264730 /usr/lib/libXt.so.6.0.0
7f80aabd7000-7f80aabd8000 r--p 0005e000 08:05 264730 /usr/lib/libXt.so.6.0.0
7f80aabd8000-7f80aabdd000 rw-p 0005f000 08:05 264730 /usr/lib/libXt.so.6.0.0
7f80aabdd000-7f80aabde000 rw-p 00000000 00:00 0
7f80aabde000-7f80aabf9000 r-xp 00000000 08:05 265703 /usr/lib/libxcb.so.1.1.0
7f80aabf9000-7f80aadf8000 ---p 0001b000 08:05 265703 /usr/lib/libxcb.so.1.1.0
7f80aadf8000-7f80aadf9000 r--p 0001a000 08:05 265703 /usr/lib/libxcb.so.1.1.0
7f80aadf9000-7f80aadfa000 rw-p 0001b000 08:05 265703 /usr/lib/libxcb.so.1.1.0
7f80aadfa000-7f80aae01000 r-xp 00000000 08:05 134642 /lib/librt-2.11.1.so
7f80aae01000-7f80ab000000 ---p 00007000 08:05 134642 /lib/librt-2.11.1.so
7f80ab000000-7f80ab001000 r--p 00006000 08:05 134642 /lib/librt-2.11.1.so
7f80ab001000-7f80ab002000 rw-p 00007000 08:05 134642 /lib/librt-2.11.1.so
7f80ab002000-7f80ab018000 r-xp 00000000 08:05 131010 /lib/libz.so.1.2.3.3
7f80ab018000-7f80ab217000 ---p 00016000 08:05 131010 /lib/libz.so.1.2.3.3
7f80ab217000-7f80ab218000 r--p 00015000 08:05 131010 /lib/libz.so.1.2.3.3
7f80ab218000-7f80ab219000 rw-p 00016000 08:05 131010 /lib/libz.so.1.2.3.3
7f80ab219000-7f80ab228000 r-xp 00000000 08:05 264712 /usr/lib/libXi.so.6.1.0
7f80ab228000-7f80ab427000 ---p 0000f000 08:05 264712 /usr/lib/libXi.so.6.1.0
7f80ab427000-7f80ab428000 r--p 0000e000 08:05 264712 /usr/lib/libXi.so.6.1.0
7f80ab428000-7f80ab429000 rw-p 0000f000 08:05 264712 /usr/lib/libXi.so.6.1.0
7f80ab429000-7f80ab441000 r-xp 00000000 08:05 264716 /usr/lib/libXmu.so.6.2.0
7f80ab441000-7f80ab640000 ---p 00018000 08:05 264716 /usr/lib/libXmu.so.6.2.0
7f80ab640000-7f80ab641000 r--p 00017000 08:05 264716 /usr/lib/libXmu.so.6.2.0
7f80ab641000-7f80ab642000 rw-p 00018000 08:05 264716 /usr/lib/libXmu.so.6.2.0
7f80ab642000-7f80ab653000 r-xp 00000000 08:05 264704 /usr/lib/libXext.so.6.4.0
7f80ab653000-7f80ab852000 ---p 00011000 08:05 264704 /usr/lib/libXext.so.6.4.0
7f80ab852000-7f80ab853000 r--p 00010000 08:05 264704 /usr/lib/libXext.so.6.4.0
7f80ab853000-7f80ab854000 rw-p 00011000 08:05 264704 /usr/lib/libXext.so.6.4.0
7f80ab854000-7f80acae2000 r-xp 00000000 08:05 264826 /usr/lib/libnvidia-glcore.so.256.44
7f80acae2000-7f80acce2000 ---p 0128e000 08:05 264826 /usr/lib/libnvidia-glcore.so.256.44
7f80acce2000-7f80ad22b000 rwxp 0128e000 08:05 264826 /usr/lib/libnvidia-glcore.so.256.44
7f80ad22b000-7f80ad241000 rwxp 00000000 00:00 0 Aborted

[ONYX]

OK, I found the answers here: http://www.refractivesoftware.com/forum ... 132#p25132

But anyone has an advise to my issue on Ubuntu 64?

[Nostromo]

Hi,

It is strange, could you please specify when exactly the error occurs ?

Thanks
/M

[ONYX]

I just type ./octanedemo in terminal. The splash screen is shown for a very short time and then the error message appears.

To prevent that there are some mistakes I installed a clean Ubuntu 64. Deinstalled all default nvidia drivers (sudo apt-get --purge remove nvidia-*). Installed the 256.44-version of the driver. Added PATH and LD_LIBRARY_PATH. After this I installed cuda tool kit 3.1 and then I tried to start the demo.

[mib2berlin]

Hi ONYX, you need cuda toolkit 3.0 atm.
Toolkit 3.1/2 comes later.

Cheers, mib

[ONYX]

Thanks mib2berlin. I will try it and post the result on Monday.

Have a nice weekend.

[ONYX]

Cuda Toolkit Version 3.1 was responsable for the error.
After installing version 3.0 everything works fine.

Thanks mib2berlin!