Jump to content

Core 2 Quad Support ???

Recommended Posts


my new machine is core 2 quad with a nVidia 8800.

Rendering is is faster but the CPU is running at 25 to 30%.

Im a LITTLE disapointed, to say the least....

Also VectorWorks should incorporate the Crytek Render engine.

See http://www.crytek.com/technology/index.php?sx=eng2

check the part where they compare REAL scene to RENDERED


Link to comment

AZ, RenderWorks should be using approx. 100% processor. Other rendering modes will only use 25% (we'd like to see NNA fix that). When you look at a RW rendering in process on the screen, you should see the multiple threads at work as the rendering takes place in 3 to 4 horizontal bands at once. Your dual core is emulating 4 cores, that's why with other processes that can't hyperthread you're getting 25% performance.

Link to comment
  • Vectorworks, Inc Employee

Hello AZ:

Raytracing in RenderWorks takes advantage of all the cores on the machine. Only raytracing does this, i.e. other modes do not, and if you turn off raytracing in Custom RenderWorks you will only be using one core.

Link to comment

When I render i mostly use final quality renderwoerks with a background site picture (attached

exterior render took 20 sec


interior render took 2 min 20 sec


proccesor use of rendering the interior image, about 30% to 45%


Link to comment
  • 4 weeks later...
  • Vectorworks, Inc Employee

Hello carpalmer:

Hyperthreading is a way for the processor to tell the OS that it has more than one "core", so the OS will send it more work. For rendering tasks it is better to have a real core than hyperthreading. Hyperthreading is usually on by default for processors that support it. Newer systems likely have real cores than hyperthreading.


Link to comment
  • Vectorworks, Inc Employee

Hello again carpalmer:

Quad cores will be used during raytraced rendering, i.e. FQRW, FQ Radiosity or Custom RW and Radiosity with raytracing on. While generating the radiosity solution RW only uses one core.

If you can pin it down when one of these radiosity freezes happens please email me!

Link to comment

Dave, my core duo processor has two cores, but emulates a quad core. So having multiple physical cores may not necessarily eliminate the value of hyperthreading.

carpalmer, I believe that hyperthreading is enabled/disabled in the BIOS setup, assuming that you are on a PC. Don't know about the Mac.

Link to comment

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...