Error message (VISTA 64bits memory issue)

[TOM_cg]

Re: Error message

Hi Damien,
Thanks to trying helping me out

here is what I don't understand clearly..
I use Vista 64 bit and 10Gb ram. I understand that there is a limit of 2gb per application.

What I don't understand, when I set vrimg the ram used by skecthup is still climbing up to the limit. I thought that the ram memory wasn't use by the frame buffer and the render was written on the HD directly.

Is there any plan to program vray as a standalone or 64bits instead of using skectchup's application ?

Thanks again

[dalomar_cg]

Re: Error message

Any standalone V-Ray product would be the responsibility of the Chaos Group. As to their plans for it, you'd have to ask the CG themselves. Sorry.

[TOM_cg]

Re: Error message

OK, I understand and I think the choas group community is shouting it out loud.

But still, what about the vrimg issue ?
Why is the RAM still climbing up even with the render is written on HD rather than in the RAM ?

[thomthom]

Re: Error message (VISTA 64bits memory issue)

Do you have any large planes with displacements material applied by any chance?

[TOM_cg]

Re: Error message (VISTA 64bits memory issue)

Nope.
Just textures. Max size 1500x1500

[dalomar_cg]

Re: Error message (VISTA 64bits memory issue)

VRimg doesn't prevent ram from being used if V-Ray needs it to do the calculations. It just takes the output that would be in ram and saves it directly to disc. There's plenty of other things ram is being used for, so vrimage won't affect any of the other draws V-Ray has on your memory.

[TOM_cg]

Re: Error message (VISTA 64bits memory issue)

argh..
All right. hopeless.
For now I start my old Quadcore and XP to start the renders
Full workflow draw back

Could be interesting to get experience from other users.
Are my models so badly done or the 64bits OS is really the issue here ?

Is there any Asgis or Chaos group's plans to "fix" that ?
I think most of the users would be using 64bits OS in the next year. Can't limit the render's size to 1200x1200.

thanks anyway
Cheers

[sheldon]

Re: Error message (VISTA 64bits memory issue)

I also use 64 bit 8gig ram vista and this problem is driving me crazy. IF my models are about 10-40 megs I can sneak off about 5-10 renders before a crash. If my models are pushing 80-100 megs it crashed almost every time. needless to say this is very frustrating and disappointing.

It seems when I had XP it worked so much better, or I had less crashes. I was also a noob so
I doubt my models would hit 100 meg for a simple kitchen.

Does anyone know if Vray for Rhino does this? Ive been practicing a little with Rhino and if switching is the answer then Ill be he first to do so. Other than that Im stuck chosing between high poly models or high res textures.

[TOM_cg]

Re: Error message (VISTA 64bits memory issue)

good to know I'm not the only one out there..

[thomthom]

Re: Error message (VISTA 64bits memory issue)

I haven't used 64bit Vista, only 32bit. But I'm currently testing Windows7 beta 64bit and I've had no issued so far.

[TOM_cg]

Re: Error message (VISTA 64bits memory issue)

I haven't used 64bit Vista, only 32bit. But I'm currently testing Windows7 beta 64bit and I've had no issued so far.

ohoh ..
decent model size and complexity ?
Professional use ?
4000x4000 render resol ?

update:
I've read on wiki that Windows7 would NATIVELY supports 64 and 32 bit applications.... means vista use emulation for 32 bits programs ?

[thomthom]

Re: Error message (VISTA 64bits memory issue)

I use V-Ray for architectural visualisations.
Models can often grow to 100-200K faces. Textures are usually from 1000x1000 to 2000x2000.
Final render sizes are from 2000px to 4000px depending on usage.

At work we use XP.
I some times take some projects home for experimenting. It's then where I've been using Vista 32bit, and now, recently Windows7 64bit.

I have a WIP which is mostly a stress-test, clocking 700K+ faces. Which I think is the largest model I've got. Though it doesn't have all that many unique textured material. Haven't reached that stage yet.

SU memory usage while rendering peaked at about 865MB. Not sure how much this will be when more textures are added along with bump maps.



4000x3000 render test: http://www.thomthom.net/xfiles/Render01.jpg

I don't really know what's causing your problems. I might be Vista for all I know. But there's a large number of things that could affect it. Maybe it's a difference in how we work or build our models. Just figured I'd chime in with my experience with SU+V-Ray+Vista/Windows7.

[thomthom]

Re: Error message (VISTA 64bits memory issue)

update:
I've read on wiki that Windows7 would NATIVELY supports 64 and 32 bit applications.... means vista use emulation for 32 bits programs ?

Got a link? I haven't really set myself into how this 32bit on 64bit system works. I only recently decided I wanted to make the switch and taken any interest to 64bit systems.

[dalomar_cg]

Re: Error message (VISTA 64bits memory issue)

I'm not sure if the memory handling in Vista is really any different than XP. Vista as an OS uses more memory, and there may be certain operations that were stable in XP and not in vista.

The memory handing/usage in SketchUp is probably significantly different than in Rhino. There are a LOT of loose ends in SU, so it would not surprise me if they are loosing some efficiency when it comes to using memory. I would be willing to bet that the same scene in Rhino takes up less memory than in SU. Also, Rhino is compiled with the Large Address Aware tag, which allows a 32 bit program to access a little more memory. I am not sure if SketchUp is compiled with this tag, but I do know that it makes a difference, especially on 64 bit machines.

As far as I know, all 64 bit systems emulate 32 bit applications. I also don't know how a 64 bit OS could not emulate 32 bit apps as some translation to the 64 bit architecture has to occur somewhere.

[thomthom]

Re: Error message (VISTA 64bits memory issue)

SU doesn't have that flag. But you might be able to set it yourself if you feel bold. http://asgvis.com/index.php?option=c...0&topic=5011.0 I haven't tried this. And I don't encourage it.