vray scalability to 12/24...or more cores

[jujubee]

ok but small problem : i cant run vray RT demo , dont know why , can some one write or show how to start vray RT in max2010 ??

Under your common/general tab under Assign Render and Active Shade - set it there. Then lower left-hand corner of that panel check activeshade then hit the activeshade button.

[Janosik]

well to be honest i can start that but RT does not show anything only black window when i move with object or camera .... ( no money no show )

[jujubee]

In the screen you're showing, your not using a VrayCamera - looks like you're trying to render the perspective view.

[Janosik]

yes perspective view, so it works only with vray camera right ?

PS : well still no active view with vray camera too , dont know whats wrong ....

[vlado]

Try rendering at 320x240 or lower resolution...

Best regards,
Vlado

[jujubee]

yes perspective view, so it works only with vray camera right ?
PS : well still no active view with vray camera too , dont know whats wrong ....

This is getting off-topic. But since we're talking about it already... Make certain you close out of the ActiveShade window, then switch to the physicalcamera and restart the activeshade.

[Janosik]

ok
now i have some kpaths numbers around 400 kpaths/s cpu usage 100% all 16 cores i dont move with scene ... scene like above one with some reflective materials and vray sky on background

[vlado]

Good, so you can try disabling some the cores for the vray.exe process and see how it goes.

Best regards,
Vlado

[Janosik]

ok all is showing at autodesk problem but may be problem with number of sockets (4) ? dont know licensing policy of autodesk ....

[dhare]

I have an 8 socket 48 core AMD opteron 8439 2.8ghz system, I can run some benchmarks - if someone wants to post a particular file to test. I tested scaling before on an older 8 socket system with 32 cores and vray didn't scale well above 12 cores.
But it probably worth running some new tests again.

-Dave

[ealanger]

Always better to have comparative tests from actual renders, but I've found www.spec.org cpu2006 test to be pretty close to reality how CPU's are scaling.
If I compare fp rate numbers with backburners performance index its dead on for the four different Xeon CPU's we are using (all machines are 2 cpu with 4 cores each)
And I think most of the CPU configurations available is included in their results.

But Our Opterons is unfortunately not close to performing as good with Vray & Max as they do in the CPU2006 benchmark.
But from reading this thread it seems like maybe its a optimisation / compiler issue.

Edit- Does not work at all with 1 cpu 4 core numbers, Just tried a X3430 which performed terribel compared to the fp rate numbers from SPEC, so maybe I was just lucky before -/edit

[Janosik]

nice so i can rar my family house test scene and will see ... other things through PM