---
title: "System"
canonical: "https://documentation.chaos.com/space/VMAYA/111739157/System"
format: markdown
---
This page provides information on the System rollout in the Render Settings.


##  **Overview** 

---

> Macro (anchor)



##  **Raycaster Parameters**

---

One of the basic operations that V-Ray must perform is raycasting, the process of determining if a given ray intersects any geometry in the scene and, if so - identifying that geometry. By default, V-Ray uses the [Intel Embree raycaster](https://www.embree.org/)<span style="color: #272727">. </span>

 **Abort rendering on missing asset** – When enabled, the scene will not render if an asset fails to load. When DR is used, the DR server(s) that didn't successfully receive an asset will be excluded from rendering.

> Macro (anchor)



## **Frame Stamp Parameters**

---

The frame stamp is a convenient way to tag or record information about the scene as text on rendered images. For example, frame stamps can be used with network rendering to record which frames were rendered by which machine. The frame stamp appears as one line of text at the top or bottom of the image. *See also the Stamp layer parameters on the **[Layers ](https://docs-chaos.atlassian.net/wiki/spaces/VMAYA/pages/111739116)**page.*

 

**Show Frame Stamp ** – Turns the frame stamp on and off. 

**Frame Stamp ** – The keywords used to render the stamp tokens or keyboards (see table below). These keywords are replaced by V-Ray with the corresponding value:

 

|  |  |
| --- | --- |
| **Keyword** | **Information rendered** |
| %vrayversion | Current version of V-Ray |
| %filename | Name of the current scene file |
| %frame | Number of the current frame |
| %primitives * | Number of unique intersectable primitives generated for the current frame* |
| %rendertime | Render time for the current frame |
| %computername | Network name of the computer |
| %date | Current system date |
| %time | Current system time |
| %w | Width of the image in pixels |
| %h | Height of the image in pixels |
| %camera | Name of the camera for this frame if rendering from a camera (if not rendering from a camera, an empty string) |
| %ram | Amount of physical memory (in KBytes) installed on the system |
| %vmem | Amount of virtual memory (in KBytes) available on the system |
| %mhz | Clock speed of the system CPU(s) |
| %os | Operating system |

 

* An intersectable primitive is a primitive that provides a direct method for intersection with a ray (such as a triangle, the infinite plane generated by a  VRayPlane plugin etc). Most often, the number of these primitives is the same as the number of triangles (faces) processed by V-Ray for the current frame. Note that this may be different from the total number of triangles in the scene. With the dynamic raycaster, only geometry that is actually needed is generated and accounted for. Geometry that is not generated is not included in this count.**   ** 

**Vertical Alignment**  –  Specifies where to print the information. The available values are Top and Bottom

 **Justify**  ** ** – Specifies the position of the stamp:

  **Left**  ** **– The stamp is placed on the left of the image.  
  **Center**  ** ** – The stamp is centered.  
  **Right**  ** ** – The stamp is placed on the right side of the image.

 

##  **V-Ray Log Parameters**

---

These parameters control the V-Ray messages displayed in the Maya Output Window and V-Ray Frame Buffer Log panel. During rendering, V-Ray writes various information in the file vray4maya_log.txt located in the respective temporary folder. The Output Window (and [VFB](https://docs-chaos.atlassian.net/wiki/spaces/VMAYA/pages/111739034/V-Ray+Frame+Buffer#Log)) shows some of that information so that you can view it without the need to manually open that file.

The V-Ray log file can be found by default in the following places:

**Windows**: C:\Users\<user>\AppData\Local\Temp\vray4maya_log.txt  
  
**Linux**: var/tmp/vray4maya_log.txt  
  
**macOS**: in the current temp folder.

You can manually change where the V-Ray log file is saved using environment variables. See more in the [Environment Variables](https://docs-chaos.atlassian.net/wiki/spaces/VMAYA/pages/111739735) page.

Each message falls into one of four categories: Errors, Warnings, Informative messages, and Debug messages.

 **Log message level**  – Determines which messages, if any, are going to be displayed in the Output Window. 

 **Progress increment**  –  Controls the intervals at which V-Ray prints out messages. The default value of 10 means that V-Ray prints out messages at every 10% of the render time.   

 

## **Tiled Texture Parameters**

---

##  **Advanced System Parameters** 

---


## **Memory Tracking**

---


## **V-Ray Profiler**

---



## **Post Effects Rate**

---