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Hi all,
I had the same Mental Ray Fatal Error “Can’t allocate 13325 bytes” thing and then the crash in 3ds Max 9. I’ve been diggin’ around many posts, things about tweaking the render settings and a lot of stuff, but I kept thinking to myself that the problem had to do with the memory (RAM) that was required by the renderer. I have a Dual Core, 4 gig in RAM, 32 bit Vista OS, which kept telling me that I had the requirments to fulfill the memory requirments needed by Mental Ray, so after A LOT OF digging I discovered this:
Microsoft locked the 32 bit OS (XP or Vista, both are locked) to use a maximum of 2gigs of RAM, allowing programs (such as MAX) to use only that amount of memory (2gigs), wether MAX requires more when you are using Mental Ray, specially with huge scenes or a lot of displacement; luckily, there’s a way to unlock that memory limit and switch it to 3gigs of RAM (VISTA OS), and here’s the process:
NOTE: it is highly recomended to make this process only if you have 4gig of RAM memory, if you have less, I don’t know what problems you may face.
On Windows Vista:
1. On START menu, on the bottom left side where it says “Start Search”, type the words CMD and then hit ctrl+shift+enter.
2. When the “allow” “don’t allow” window appears, hit “allow” so you access the program as an administrator.
3. A black pannel appears (which was formerly known as MS-DOS) and there you must proceed with the following:
4. Type bcdedit /set IncreaseUserVa 3072 (the code is case sensitive and you must also type the spaces between each word), and then hit enter.
5. A phrase at the bottom of everything must say something like “the changes have been done correctly”.
6. Restart the system.
That is everything; as I did it, the crashing stopped and my render times were reduced dramatically.
At least it worked for me, so I hope it works for you guys. (I know how frustrating this crashing issue can become).
If you want to revert the process, type bcdedit /deletevalue IncreaseUserVa on the DOS window.
Here’s the link that guided me through the process:
http://www.cadforum.cz/cadforum_en/qaID.asp?tip=5551
BTW… I mentioned this above but here it goes again: THIS IS FOR WINDOWS VISTA 32bit OS. For Windows XP users here’s a link that might guide you too… Although its a bit more complicated…
http://discussion.autodesk.com/thread.jspa?threadID=485392
Another answer to the problem would be switching to a 64bit OS…
Good luck!
"We live in a collective exile of nature”
3ds MAX Design 2011 SP1
Core i7 930 Overclocked @2.80 - 3.20 GHz
12 Gigs RAM
Dual NVidia GeForce GTX 460
Windows 7 64 bit Professional
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