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Multithreading and multiprocessor capabilities in AutoCAD

Products and versions covered
AutoCAD 2002, AutoCAD 2004, AutoCAD 2005, AutoCAD 2006, AutoCAD 2007, AutoCAD 2008, AutoCAD 2009, AutoCAD 2010, AutoCAD 2011, AutoCAD 2012, AutoCAD 2013, AutoCAD 2014, AutoCAD 2015, AutoCAD 2016, AutoCAD Architecture 2008, AutoCAD Architecture 2009, AutoCAD Architecture 2010, AutoCAD Architecture 2011, AutoCAD Architecture 2012, AutoCAD Architecture 2013, AutoCAD Architecture 2014, AutoCAD Architecture 2015, AutoCAD Architecture 2016, AutoCAD Electrical 2004, AutoCAD Electrical 2005, AutoCAD Electrical 2006, AutoCAD Electrical 2007, AutoCAD Electrical 2008, AutoCAD Electrical 2009, AutoCAD Electrical 2010, AutoCAD Electrical 2011, AutoCAD Electrical 2012, AutoCAD Electrical 2013, AutoCAD Electrical 2014, AutoCAD Electrical 2015, AutoCAD Electrical 2016, AutoCAD LT 2002, AutoCAD LT 2004, AutoCAD LT 2005, AutoCAD LT 2006, AutoCAD LT 2007, AutoCAD LT 2008, AutoCAD LT 2009, AutoCAD LT 2010, AutoCAD LT 2011, AutoCAD LT 2012, AutoCAD LT 2013, AutoCAD LT 2014, AutoCAD LT 2015, AutoCAD LT 2016, AutoCAD MEP 2008, AutoCAD MEP 2009, AutoCAD MEP 2010, AutoCAD MEP 2011, AutoCAD MEP 2012, AutoCAD MEP 2013, AutoCAD MEP 2014, AutoCAD MEP 2015, AutoCAD MEP 2016, AutoCAD Map 3D 2008, AutoCAD Map 3D 2009, AutoCAD Map 3D 2010, AutoCAD Map 3D 2011, AutoCAD Map 3D 2012, AutoCAD Map 3D 2013, AutoCAD Map 3D 2014, AutoCAD Map 3D 2015, AutoCAD Map 3D 2016, AutoCAD Map 3D Enterprise 2012, AutoCAD Map 3D Enterprise 2013, AutoCAD Mechanical 2004, AutoCAD Mechanical 2005, AutoCAD Mechanical 2006, AutoCAD Mechanical 2007, AutoCAD Mechanical 2008, AutoCAD Mechanical 2009, AutoCAD Mechanical 2010, AutoCAD Mechanical 2011, AutoCAD Mechanical 2012, AutoCAD Mechanical 2013, AutoCAD Mechanical 2014, AutoCAD Mechanical 2015, AutoCAD Mechanical 2016, AutoCAD P&ID 2008, AutoCAD P&ID 2009, AutoCAD P&ID 2010, AutoCAD P&ID 2011, AutoCAD P&ID 2012, AutoCAD P&ID 2013, AutoCAD P&ID 2014, AutoCAD P&ID 2015, AutoCAD P&ID 2016, AutoCAD Plant 3D 2009, AutoCAD Plant 3D 2010, AutoCAD Plant 3D 2011, AutoCAD Plant 3D 2012, AutoCAD Plant 3D 2013, AutoCAD Plant 3D 2014, AutoCAD Plant 3D 2015, AutoCAD Plant 3D 2016, AutoCAD Structural Detailing 2009, AutoCAD Structural Detailing 2010, AutoCAD Structural Detailing 2011, AutoCAD Structural Detailing 2012, AutoCAD Structural Detailing 2013, AutoCAD Structural Detailing 2014, AutoCAD Structural Detailing 2015, AutoCAD Structural Detailing 2016, AutoCAD Utility Design 2012, AutoCAD Utility Design 2013, AutoCAD Utility Design 2014, AutoCAD Utility Design 2015, AutoCAD Utility Design 2016, AutoCAD ecscad 2009, AutoCAD ecscad 2010, AutoCAD ecscad 2011, AutoCAD ecscad 2012, AutoCAD ecscad 2013, AutoCAD ecscad 2014, Civil 3D 2004, Civil 3D 2005, Civil 3D 2006, & Civil 3D 2007

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Issue:

You would like to know if AutoCAD takes advantage of multithreading, hyperthreading (Intel Xeon Processors), and multiple processors.

Solution:

Some components in AutoCAD since release 14 do handle multithreading (for example, the AutoLISP interpreter is a thread). AutoCAD Release 14 itself is not a thread-safe application and not really a multithreaded application. For AutoCAD 2000 and later, releases do have some support for dual processors and hyperthreading, but no more than two cores will be utilized. On dual-core processor systems, you will see significant increases in AutoCAD application performance, particularly for graphics and file I/O operations (see the WHIPTHREAD in the AutoCAD Help).

If you are using AutoCAD on a multi-processor system (i.e., more than two cores), you may see a slight performance improvement, but only as much as the operating system is taking advantage of the multiple processors.

An ARX application can make full use of multithreading as long as it is the only thread that communicates with AutoCAD . Again, this is because AutoCAD is not thread safe. Falling to do so will cause synchronization problems.

Note: Hyperthreading in Intel Xeon Processors enables a single processor to run two separate threads of software simultaneously. A single-core Xeon processor system with hyperthreading turned on will appear to the operating system as a dual processor system.

Products:

AutoCAD Products;

Versions:

2002; 2004; 2005; 2006; 2007; 2008; 2009; 2010; 2011; 2012; 2013; 2014; 2015; 2016;

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