V-Ray 3.6 VFB hangs

[vlado]

Mmmm happened to me with 2016

Ok. I wonder if it's because of some multithreaded code that we added... will try to reproduce it here. Maybe it's just more apparent in 2018.

Best regards,
Vlado

[matanov]

We can't reproduce it here... so please, next time it hangs, create a dump file and send it over (right click on the 3dsmax.exe in the task manager and then "create dump file")

[tryharder]

We can't reproduce it here... so please, next time it hangs, create a dump file and send it over (right click on the 3dsmax.exe in the task manager and then "create dump file")

made a fresh install of 6.03 but the problem still remains

it is a permanet problem ... not only from time to time

i render in VRAY VFB ... works fine
i click start interactive rendering
it says: Building light cache
nothing happens

VFB is not updated immediatly ... it takes minutes !!! before it changes

>>> just found out that VFB is changing when i minimize max incl VFB and maximize it again

i will sent you a dump file now

same little scene (plane, sphere, dome light) works fine in 2017

[EL_CISNE_POST]

I'm having the same problem here. Also dual Xeon workstation, windows 10 and 3dsmax 2018.2

[vlado]

I'm having the same problem here. Also dual Xeon workstation, windows 10 and 3dsmax 2018.2

If yoy can get us a .dmp file as Peter Matanov explained above (while 3ds Max is still frozen), it will be very helpful.

Best regards,
Vlado

[tryharder]

ok made another test stable build Vray 3.50.04 and 3ds max 2018.2
VFB update is also not working !!!

>>>important: when i minimize max incl. VFB and maximize it again VFB gets updated.

so it seems that 2018.2 (the update) is related to the problem

vray 3.50.04 - max 2018.2 - win 10 - xeon dual processor

and

reinstalled max update 2 and Vray 3.60.03
not working

vray 3.60.03 - max 2018.2 - win 10 - xeon dual processor

hope that helps

[EL_CISNE_POST]

If yoy can get us a .dmp file as Peter Matanov explained above (while 3ds Max is still frozen), it will be very helpful.

Best regards,
Vlado

Hi Vlado, I have created the dump file, but it is almost 1gb, it is ok? I will send it to support
Thanks!

PS: My issue is a bit different because the render at the end is complete, is just that in the process the VFB is completely stucked and is like it doesn't update until it is finished. I tried modifying the affinity without luck. Hope the dump file helps to give you an idea of what's going on

PSS: here is the dump file link https://we.tl/zLjOLXyd19

[tryharder]

one more info

i just upgraded one pc (singl processor) from max 2018 to 2018.2 and vray 3.60.02 to 3.60.03
everything works fine !!!

so it seems that i have no problems on single processor pcs but on xeon dual processor

the pc that does not work fine with 2018.2 and 3.60.03 is my workstation:

xeon dual processor - 32 GB RAM - win 10 latest - 3ds max 2018.2 - vray 3.60.03
VFB does not update
3ds max 2017 with vray 3.60.03 works fine on that workstation

[KiboOst]

Here is happens on single processor Core i7 5930K

[tryharder]

that ruins my theory

[tryharder]

any chance to see a solution for that problem

or any work around ?

did the 3ds max dump file help ?

[KiboOst]

Tried to do some dump, but always got error process.readmemory ...

While bucket rendering, if we hit render and don't touch anything, we can see the render ... rendering!
I we touch a window, vfb become white and windows are flashing here and there until render end.

Really really hard to produce with such behavior

[tryharder]

so i did a last try

deinstalled everything completely:
3ds max 2018.2 - vray

reinstalled max 2018 - updated to 2018.2 - installed vray 3.60.03

the problem is still here

VFB will not update !

opened up 2018 again
imported a just created scene
>>> told the phys camera to install exposer control - i had to do so !!!
hit render
hit interactive render - just for fun to see its not working

but:

now it suddenly works for me !!!

may be that helps

[KiboOst]

There is also serious problems with backburner rendering.

The 3dsmax process takes so much process that nothing else can do anything. So server.exe doesn't get answer, and launch several (sometimes dozens!!) of 3dsmax and maxadapter and the computer just get stuck. We can just rdp it, even keyboard doesn't respond, I've made a bat to kill all maxadapter, 3dsmax, server so the machine can finnally respond.

Even with max process as low priority and low priority thread checked, V-Ray takes all single processor loop. Nothing can run beside when max is rendering. Never had this with V-Ray before 3.6x

[Dman3d]

I would like to add we have the same problem on our Dual Xeons using MAX 2018 Vray 3.60.02, hope this one can get resolved.
The VFB, and entire machine for that matter is completely unresponsive for most of the rendering time, on occasion you can get the mouse to respond to do things very slowly

--update
The issue only seems to show up in bucket mode. Progressive seems to be unaffected