Multiple GPUs - Revision history

WikiSysop: http->httpS

2021-03-04T07:27:16Z

http->httpS

Andrew: /* How to Configure Multiple GPUs */

2014-02-19T16:07:59Z

How to Configure Multiple GPUs

VMaslov: /* How to Configure Multiple GPUs */

2013-08-14T12:29:55Z

How to Configure Multiple GPUs

Andrew at 14:15, 5 August 2013

2013-08-05T14:15:17Z

Andrew: /* Introduction to Multiple GPUs in iPi Mocap Studio */

2013-07-30T12:01:40Z

Introduction to Multiple GPUs in iPi Mocap Studio

Andrew: /* How to Configure Multiple GPUs */

2013-06-30T13:18:36Z

How to Configure Multiple GPUs

Andrew at 13:12, 30 June 2013

2013-06-30T13:12:26Z

Andrew at 17:35, 27 June 2013

2013-06-27T17:35:09Z

Andrew at 17:03, 27 June 2013

2013-06-27T17:03:19Z

Andrew at 17:01, 27 June 2013

2013-06-27T17:01:06Z

@@ Line 8: / Line 8: @@
 * Performance gain is more noticeable for large number of cameras (for example, '''8''' cameras). If you are using just 1 Kinect camera (or other single depth sensor), you may experience negligible performance improvement from a multi-GPU configuration.
 * Combining multiple low-end GPUs makes little sense. You may achieve much better performance by upgrading to a single high-end gaming GPU like '''NVidia GTX 780'''.
-* Multiple GPUs usage is available only in [http://ipisoft.com/software/standard-edition STANDARD edition]. In other editions you can try this functionality but in this case all results will be saved in [[.iPiMocapTrial_file_extension|restricted trial format]] which prohibits export of result animation.
+* Multiple GPUs usage is available only in [https://ipisoft.com/software/standard-edition STANDARD edition]. In other editions you can try this functionality but in this case all results will be saved in [[.iPiMocapTrial_file_extension|restricted trial format]] which prohibits export of result animation.
 == How to Configure Multiple GPUs ==

@@ Line 15: / Line 15: @@
 To configure your multiple video cards for use in [[iPi Mocap Studio]], you should perform the following steps:
 # Disable '''SLI''' or '''Crossfire'''
-# Extend Windows desktop to use additional video adapters. Go to the following path in '''Windows Control Panel''': <blockquote>Control Panel -> Appearance and Personalization -> Display -> Screen Resolution</blockquote> and select '''Multiple displays: Extend these displays''' for your additional video cards. Click '''Apply''' button.
+# Extend Windows desktop to use additional video adapters. Go to the following path in '''Windows Control Panel''': <blockquote>Control Panel > Appearance and Personalization > Display > Screen Resolution</blockquote> and select '''Multiple displays: Extend these displays''' for your additional video cards. Click '''Apply''' button.
 # Restart [[iPi Mocap Studio]]. Now it should be able to use your additional GPUs.

@@ Line 15: / Line 15: @@
 To configure your multiple video cards for use in [[iPi Mocap Studio]], you should perform the following steps:
 # Disable '''SLI''' or '''Crossfire'''
-# Extend Windows desktop to use additional video adapters. Go to the following path in '''Windows Control Panel''': <blockquote>Control Panel -> Appearance and Personalization -> Display -> Screen Resolution</blockquote> and select '''Multiple displays: Extend this displays''' for your additional video cards. Click '''Apply''' button.
+# Extend Windows desktop to use additional video adapters. Go to the following path in '''Windows Control Panel''': <blockquote>Control Panel -> Appearance and Personalization -> Display -> Screen Resolution</blockquote> and select '''Multiple displays: Extend these displays''' for your additional video cards. Click '''Apply''' button.
 # Restart [[iPi Mocap Studio]]. Now it should be able to use your additional GPUs.

@@ Line 8: / Line 8: @@
 * Performance gain is more noticeable for large number of cameras (for example, '''8''' cameras). If you are using just 1 Kinect camera (or other single depth sensor), you may experience negligible performance improvement from a multi-GPU configuration.
 * Combining multiple low-end GPUs makes little sense. You may achieve much better performance by upgrading to a single high-end gaming GPU like '''NVidia GTX 780'''.
-* Multiple GPUs usage is available only in '''STANDARD edition'''. In other editions you can try this functionality but in this case all results will be saved in [[.iPiMocapTrial_file_extension|restricted trial format]] which prohibits export of result animation.
+* Multiple GPUs usage is available only in [http://ipisoft.com/software/standard-edition STANDARD edition]. In other editions you can try this functionality but in this case all results will be saved in [[.iPiMocapTrial_file_extension|restricted trial format]] which prohibits export of result animation.
 == How to Configure Multiple GPUs ==

@@ Line 8: / Line 8: @@
 * Performance gain is more noticeable for large number of cameras (for example, '''8''' cameras). If you are using just 1 Kinect camera (or other single depth sensor), you may experience negligible performance improvement from a multi-GPU configuration.
 * Combining multiple low-end GPUs makes little sense. You may achieve much better performance by upgrading to a single high-end gaming GPU like '''NVidia GTX 780'''.
 == How to Configure Multiple GPUs ==

@@ Line 3: / Line 3: @@
 You should be aware of the following limitations:
 * You can use only '''1''', '''2''' or '''4''' GPUs inside one PC. Other configurations (for example, 3 GPUs) are not supported.
-* Currently we recommend using only single-GPU video cards (e.g. NVidia GTX 780). iPi Soft never tested multi-GPU video cards like '''NVidia GTX 690''', and it is not known if there is a way to disable SLI/Crossfire for multi-GPU video card (to make it usable in [[iPi Mocap Studio]]).
+* Currently we recommend using only single-GPU video cards (e.g. '''NVidia GTX 780'''). iPi Soft never tested multi-GPU video cards like '''NVidia GTX 690''', and it is not known if there is a way to disable SLI/Crossfire for multi-GPU video card (to make it usable in [[iPi Mocap Studio]]).
 * For best efficiency, all GPUs must be of approximately the same performance. [[iPi Mocap Studio]] cannot balance load for multiple GPUs with different performance levels, so mixing low-end and high-end GPUs will result in very poor performance.
 * Due to synchronization overhead, performance scaling is not linear. Performance gain diminishes with the number of GPUs.  Using second identical GPU will speed up tracking approximately by a factor of '''1.6''' (instead of factor of 2, as one might expect).
@@ Line 11: / Line 11: @@
 == How to Configure Multiple GPUs ==
 To configure your multiple video cards for use in [[iPi Mocap Studio]], you should perform the following steps:
-# Disable '''SLI''' or '''Crossfire''' (see example screenshot).
+# Disable '''SLI''' or '''Crossfire''' [[Image:Disable_SLI.png|thumb|How to disable SLI (click to enlarge)]]
-# Extend Windows desktop to use additional video adapters. Go to the following path in '''Windows Control Panel''': <blockquote>Control Panel -> Appearance and Personalization -> Display -> Screen Resolution</blockquote> and select '''Multiple displays: Extend this displays''' for your additional video cards. Click '''Apply''' button.
+# Extend Windows desktop to use additional video adapters. Go to the following path in '''Windows Control Panel''': <blockquote>Control Panel -> Appearance and Personalization -> Display -> Screen Resolution</blockquote> and select '''Multiple displays: Extend this displays''' for your additional video cards. Click '''Apply''' button. [[Image:Extend_desktop.png|thumb|How to extend Windows desktop (click to enlarge)]]
 # Restart [[iPi Mocap Studio]]. Now it should be able to use your additional GPUs.

@@ Line 1: / Line 1: @@
-== Introduction to Multiple GPUs in iPi Mocap Studio ==
+== Introduction to Multiple GPUs in [[iPi Mocap Studio]] ==
 Starting with version 2.4 of [[iPi Mocap Studio]], you can use multiple GPUs to speed up tracking.
 You should be aware of the following limitations:

@@ Line 1: / Line 1: @@
 == Introduction to Multiple GPUs in iPi Mocap Studio ==
-Starting with version 2.4, you can use multiple GPUs to speed up tracking in iPi Mocap Studio.
+Starting with version 2.4 of [[iPi Mocap Studio]], you can use multiple GPUs to speed up tracking.
 You should be aware of the following limitations:
-* You can use only 1, 2 or 4 GPUs inside one PC. Other configurations (for example, 3 GPUs) are not supported.
+* You can use only '''1''', '''2''' or '''4''' GPUs inside one PC. Other configurations (for example, 3 GPUs) are not supported.
-* Currently we recommend using only single-GPU video cards (e.g. NVidia GTX 780). iPi Soft never tested multi-GPU video cards like Nvidia GTX 690, and it is not known if there is a way to disable SLI/Crossfire for multi-GPU video card (to make it usable in iPi Mocap Studio).
+* Currently we recommend using only single-GPU video cards (e.g. NVidia GTX 780). iPi Soft never tested multi-GPU video cards like '''NVidia GTX 690''', and it is not known if there is a way to disable SLI/Crossfire for multi-GPU video card (to make it usable in [[iPi Mocap Studio]]).
-* For best efficiency, all GPUs must be of approximately the same performance. iPi Mocap Studio cannot balance load for multiple GPUs with different performance levels, so mixing low-end and high-end GPUs will result in very poor performance.
+* For best efficiency, all GPUs must be of approximately the same performance. [[iPi Mocap Studio]] cannot balance load for multiple GPUs with different performance levels, so mixing low-end and high-end GPUs will result in very poor performance.
 * Due to synchronization overhead, performance scaling is not linear. Performance gain diminishes with the number of GPUs.  Using second identical GPU will speed up tracking approximately by a factor of 1.6 (instead of factor of 2, as one might expect).
-* Performance gain is more noticeable for large number of cameras (for example, 8 cameras). If you are using just 1 kinect camera, you may experience negligible performance improvement from a multi-GPU configuration.
+* Performance gain is more noticeable for large number of cameras (for example, '''8''' cameras). If you are using just 1 Kinect camera (or other single depth sensor), you may experience negligible performance improvement from a multi-GPU configuration.
-* Combining multiple low-end GPUs makes little sense. You may achieve much better performance by upgrading to a single high-end gaming GPU like Nvidia GTX 780.
+* Combining multiple low-end GPUs makes little sense. You may achieve much better performance by upgrading to a single high-end gaming GPU like '''NVidia GTX 780'''.
 == How to Configure Multiple GPUs ==
-To configure your multiple video cards for use in iPi Mocap Studio, you should perform the following steps:
+To configure your multiple video cards for use in [[iPi Mocap Studio]], you should perform the following steps:
-# Disable SLI or Crossfire (see example screenshot).
+# Disable '''SLI''' or '''Crossfire''' (see example screenshot).
-# Extend Windows desktop to use additional video adapters. Go to the following path in Windows Control Panel: <blockquote>Control Panel\Appearance and Personalization\Display\Screen Resolution</blockquote> and select "Multiple displays: Extend this displays" for your additional video cards. Click "Apply".
+# Extend Windows desktop to use additional video adapters. Go to the following path in '''Windows Control Panel''': <blockquote>Control Panel -> Appearance and Personalization -> Display -> Screen Resolution</blockquote> and select "Multiple displays: Extend this displays" for your additional video cards. Click "Apply".
-# Restart iPi Mocap Studio. Now it should be able to use your additional GPUs.
+# Restart [[iPi Mocap Studio]]. Now it should be able to use your additional GPUs.
 [[Image:Disable_SLI.png]]
 [[Image:Extend_desktop.png]]