Difference between revisions of "GstCUDA - Example - cudafilter: NVMM direct mapping"

From RidgeRun Developer Connection
Jump to: navigation, search
(Add perf element warning)
(Fix grammar mistakes)
Line 16: Line 16:
  
 
<pre style=background-color:yellow>
 
<pre style=background-color:yellow>
−
This examples will only run in JetPack 3.0 and below. For newer JetPack versions, please refer to https://developer.ridgerun.com/wiki/index.php?title=GstCUDA_-_Example_-_cudafilter:_Unified_memory_allocator
+
These examples will only run in JetPack 3.0 and below. For newer JetPack versions, please refer to https://developer.ridgerun.com/wiki/index.php?title=GstCUDA_-_Example_-_cudafilter:_Unified_memory_allocator
 
</pre>
 
</pre>
  
−
   The perf element can be downloaded from [https://github.com/RidgeRun/gst-perf this repository], otherwise the element can be removed from the pipeline without any issues.
+
   The perf element can be downloaded from [https://github.com/RidgeRun/gst-perf this repository]. Otherwise, the element can be removed from the pipeline without any issues.
  
 
== Gray-scale filter CUDA library algorithm ==
 
== Gray-scale filter CUDA library algorithm ==

Revision as of 08:55, 9 May 2019

Error something wrong.jpg Problems running the pipelines shown on this page?
Please see our GStreamer Debugging guide for help.

←

Example 1: cudafilter

⌂
Home 		→

Unified memory allocator


This page gives a set of test pipelines to use cudafilter element for NVMM direct mapping mode. 


These examples will only run in JetPack 3.0 and below. For newer JetPack versions, please refer to https://developer.ridgerun.com/wiki/index.php?title=GstCUDA_-_Example_-_cudafilter:_Unified_memory_allocator

 The perf element can be downloaded from this repository. Otherwise, the element can be removed from the pipeline without any issues.

Gray-scale filter CUDA library algorithm

1080p 60fps capture to display (in-place=true)

Example pipeline

gst-launch-1.0 nvcamerasrc queue-size=10 sensor-id=0 fpsRange='60 60' ! "video/x-raw(memory:NVMM),width=1920,height=1080,format=I420,framerate=60/1" ! nvvidconv ! "video/x-raw(memory:NVMM),width=1920,height=1080,format=I420,framerate=60/1" ! cudafilter in-place=true location=./gray-scale-filter.so ! perf print-arm-load=true ! nvoverlaysink --gst-debug=0

Performance stats

GST-PERF INFO -->  Timestamp: 0:02:13.615967657; Bps: 776; fps: 60.0; CPU: 8;  
GST-PERF INFO -->  Timestamp: 0:02:14.632537582; Bps: 763; fps: 60.3; CPU: 8;  
GST-PERF INFO -->  Timestamp: 0:02:15.632844549; Bps: 776; fps: 60.0; CPU: 8;  
GST-PERF INFO -->  Timestamp: 0:02:16.649615644; Bps: 763; fps: 60.3; CPU: 9;  
GST-PERF INFO -->  Timestamp: 0:02:17.666065311; Bps: 763; fps: 60.3; CPU: 12;  
GST-PERF INFO -->  Timestamp: 0:02:18.682560220; Bps: 763; fps: 60.3; CPU: 12;  
GST-PERF INFO -->  Timestamp: 0:02:19.699122957; Bps: 763; fps: 60.3; CPU: 11;  
GST-PERF INFO -->  Timestamp: 0:02:20.699298792; Bps: 776; fps: 60.0; CPU: 11;  
GST-PERF INFO -->  Timestamp: 0:02:21.715510459; Bps: 763; fps: 60.3; CPU: 11;  
GST-PERF INFO -->  Timestamp: 0:02:22.715910009; Bps: 776; fps: 60.0; CPU: 11;

4K 60fps capture to display (in-place=true)

Example pipeline

gst-launch-1.0 nvcamerasrc queue-size=10 sensor-id=0 fpsRange='60 60' ! "video/x-raw(memory:NVMM),width=3840,height=2160,format=I420,framerate=60/1" ! nvvidconv ! "video/x-raw(memory:NVMM),width=3840,height=2160,format=I420,framerate=60/1" ! cudafilter in-place=true location=./gray-scale-filter.so ! perf print-arm-load=true ! nvoverlaysink --gst-debug=0

Performance stats

GST-PERF INFO -->  Timestamp: 0:03:56.819087040; Bps: 776; fps: 60.0; CPU: 16;  
GST-PERF INFO -->  Timestamp: 0:03:57.825121037; Bps: 771; fps: 59.64; CPU: 13;  
GST-PERF INFO -->  Timestamp: 0:03:58.837141233; Bps: 766; fps: 59.28; CPU: 14;  
GST-PERF INFO -->  Timestamp: 0:03:59.849401695; Bps: 766; fps: 59.28; CPU: 14;  
GST-PERF INFO -->  Timestamp: 0:04:00.859525079; Bps: 768; fps: 59.40; CPU: 13;  
GST-PERF INFO -->  Timestamp: 0:04:01.871618207; Bps: 766; fps: 59.28; CPU: 15;  
GST-PERF INFO -->  Timestamp: 0:04:02.883459413; Bps: 767; fps: 59.34; CPU: 15;  
GST-PERF INFO -->  Timestamp: 0:04:03.894646509; Bps: 767; fps: 59.34; CPU: 14;  
GST-PERF INFO -->  Timestamp: 0:04:04.906216370; Bps: 767; fps: 59.34; CPU: 14;  
GST-PERF INFO -->  Timestamp: 0:04:05.917121183; Bps: 768; fps: 59.40; CPU: 14;


720p 60fps videotestsrc to display (in-place=true)

Example pipeline

gst-launch-1.0 videotestsrc is-live=true ! "video/x-raw,width=1280,height=720,format=I420,framerate=60/1" ! nvvidconv ! "video/x-raw(memory:NVMM),width=1280,height=720,format=I420,framerate=60/1" ! cudafilter in-place=true location=./gray-scale-filter.so ! perf print-arm-load=true ! nvoverlaysink --gst-debug=0

Performance stats

GST-PERF INFO -->  Timestamp: 0:12:29.994184572; Bps: 776; fps: 60.0; CPU: 18;  
GST-PERF INFO -->  Timestamp: 0:12:31.010495933; Bps: 763; fps: 60.3; CPU: 18;  
GST-PERF INFO -->  Timestamp: 0:12:32.010535558; Bps: 776; fps: 60.0; CPU: 18;  
GST-PERF INFO -->  Timestamp: 0:12:33.027377442; Bps: 763; fps: 60.3; CPU: 18;  
GST-PERF INFO -->  Timestamp: 0:12:34.044071960; Bps: 763; fps: 60.3; CPU: 18;  
GST-PERF INFO -->  Timestamp: 0:12:35.044204013; Bps: 776; fps: 60.0; CPU: 19;  
GST-PERF INFO -->  Timestamp: 0:12:36.044224584; Bps: 776; fps: 60.0; CPU: 19;  
GST-PERF INFO -->  Timestamp: 0:12:37.060451742; Bps: 763; fps: 60.3; CPU: 19;  
GST-PERF INFO -->  Timestamp: 0:12:38.060585805; Bps: 776; fps: 60.0; CPU: 19;  
GST-PERF INFO -->  Timestamp: 0:12:39.060628072; Bps: 776; fps: 60.0; CPU: 18;


1080p 60fps capture to display (in-place=false)

Example pipeline

gst-launch-1.0 nvcamerasrc queue-size=10 sensor-id=0 fpsRange='60 60' ! "video/x-raw(memory:NVMM),width=1920,height=1080,format=I420,framerate=60/1" ! nvvidconv ! "video/x-raw(memory:NVMM),width=1920,height=1080,format=I420,framerate=60/1" ! cudafilter in-place=false location=./gray-scale-filter.so ! nvvidconv ! perf print-arm-load=true ! nvoverlaysink --gst-debug=0

Performance stats

GST-PERF INFO -->  Timestamp: 0:05:46.167015649; Bps: 776; fps: 60.0; CPU: 20;  
GST-PERF INFO -->  Timestamp: 0:05:47.167023874; Bps: 776; fps: 60.0; CPU: 18;  
GST-PERF INFO -->  Timestamp: 0:05:48.183394748; Bps: 763; fps: 60.3; CPU: 19;  
GST-PERF INFO -->  Timestamp: 0:05:49.183590994; Bps: 776; fps: 60.0; CPU: 23;  
GST-PERF INFO -->  Timestamp: 0:05:50.183618490; Bps: 776; fps: 60.0; CPU: 27;  
GST-PERF INFO -->  Timestamp: 0:05:51.184194423; Bps: 776; fps: 60.0; CPU: 45;  
GST-PERF INFO -->  Timestamp: 0:05:52.200942016; Bps: 763; fps: 60.3; CPU: 46;  
GST-PERF INFO -->  Timestamp: 0:05:53.216856380; Bps: 764; fps: 60.9; CPU: 45;  
GST-PERF INFO -->  Timestamp: 0:05:54.217181741; Bps: 776; fps: 60.0; CPU: 46;  
GST-PERF INFO -->  Timestamp: 0:05:55.217598561; Bps: 776; fps: 60.0; CPU: 46;


4K 60fps capture to fakesink (in-place=false)

Example pipeline

gst-launch-1.0 nvcamerasrc queue-size=10 sensor-id=0 fpsRange='60 60' ! "video/x-raw(memory:NVMM),width=3840,height=2160,format=I420,framerate=60/1" ! nvvidconv ! "video/x-raw(memory:NVMM),width=3840,height=2160,format=I420,framerate=60/1" ! cudafilter in-place=false location=./gray-scale-filter.so ! perf print-arm-load=true ! fakesink --gst-debug=0

Performance stats

GST-PERF INFO -->  Timestamp: 0:08:40.062814951; Bps: 12330624; fps: 59.46; CPU: 22;  
GST-PERF INFO -->  Timestamp: 0:08:41.074953852; Bps: 12294071; fps: 59.28; CPU: 23;  
GST-PERF INFO -->  Timestamp: 0:08:42.087998326; Bps: 12281934; fps: 59.23; CPU: 22;  
GST-PERF INFO -->  Timestamp: 0:08:43.097597957; Bps: 12330624; fps: 59.46; CPU: 22;  
GST-PERF INFO -->  Timestamp: 0:08:44.109302715; Bps: 12306231; fps: 59.34; CPU: 25;  
GST-PERF INFO -->  Timestamp: 0:08:45.120250840; Bps: 12318415; fps: 59.40; CPU: 22;  
GST-PERF INFO -->  Timestamp: 0:08:46.132807638; Bps: 12294071; fps: 59.28; CPU: 23;  
GST-PERF INFO -->  Timestamp: 0:08:47.144759986; Bps: 12306231; fps: 59.34; CPU: 21;  
GST-PERF INFO -->  Timestamp: 0:08:48.154396985; Bps: 12330624; fps: 59.46; CPU: 22;  
GST-PERF INFO -->  Timestamp: 0:08:49.167064442; Bps: 12294071; fps: 59.28; CPU: 23;  
GST-PERF INFO -->  Timestamp: 0:08:50.178082366; Bps: 12306231; fps: 59.34; CPU: 23;


720p 60fps videotestsrc to display (in-place=false)

Example pipeline

gst-launch-1.0 videotestsrc is-live=true ! "video/x-raw,width=1280,height=720,format=I420,framerate=60/1" ! nvvidconv ! "video/x-raw(memory:NVMM),width=1280,height=720,format=I420,framerate=60/1" ! cudafilter in-place=false location=./gray-scale-filter.so ! nvvidconv ! perf print-arm-load=true ! nvoverlaysink --gst-debug=0

Performance stats

GST-PERF INFO -->  Timestamp: 0:16:38.724108163; Bps: 763; fps: 60.3; CPU: 12;  
GST-PERF INFO -->  Timestamp: 0:16:39.724682234; Bps: 776; fps: 60.0; CPU: 12;  
GST-PERF INFO -->  Timestamp: 0:16:40.740983855; Bps: 763; fps: 60.3; CPU: 12;  
GST-PERF INFO -->  Timestamp: 0:16:41.740991843; Bps: 776; fps: 60.0; CPU: 11;  
GST-PERF INFO -->  Timestamp: 0:16:42.757944147; Bps: 763; fps: 60.3; CPU: 12;  
GST-PERF INFO -->  Timestamp: 0:16:43.758090059; Bps: 776; fps: 60.0; CPU: 12;  
GST-PERF INFO -->  Timestamp: 0:16:44.774079094; Bps: 764; fps: 60.9; CPU: 12;  
GST-PERF INFO -->  Timestamp: 0:16:45.774631002; Bps: 776; fps: 60.0; CPU: 12;  
GST-PERF INFO -->  Timestamp: 0:16:46.774633540; Bps: 776; fps: 60.0; CPU: 13;  
GST-PERF INFO -->  Timestamp: 0:16:47.791021283; Bps: 763; fps: 60.3; CPU: 12;


HW accelerated memcpy CUDA library algorithm

1080p 60fps capture to display (in-place=true)

Example pipeline

gst-launch-1.0 nvcamerasrc queue-size=10 sensor-id=0 fpsRange='60 60' ! "video/x-raw(memory:NVMM),width=1920,height=1080,format=I420,framerate=60/1" ! nvvidconv ! "video/x-raw(memory:NVMM),width=1920,height=1080,format=I420,framerate=60/1" ! cudafilter in-place=true location=./memcpy.so ! perf print-arm-load=true ! nvoverlaysink --gst-debug=0

Performance stats

GST-PERF INFO -->  Timestamp: 0:19:39.222044712; Bps: 763; fps: 60.3; CPU: 12;  
GST-PERF INFO -->  Timestamp: 0:19:40.222362703; Bps: 776; fps: 60.0; CPU: 11;  
GST-PERF INFO -->  Timestamp: 0:19:41.222364533; Bps: 776; fps: 60.0; CPU: 12;  
GST-PERF INFO -->  Timestamp: 0:19:42.238761022; Bps: 763; fps: 60.3; CPU: 11;  
GST-PERF INFO -->  Timestamp: 0:19:43.255579257; Bps: 763; fps: 60.3; CPU: 10;  
GST-PERF INFO -->  Timestamp: 0:19:44.255680715; Bps: 776; fps: 60.0; CPU: 9;  
GST-PERF INFO -->  Timestamp: 0:19:45.272253134; Bps: 763; fps: 60.3; CPU: 8;  
GST-PERF INFO -->  Timestamp: 0:19:46.288675431; Bps: 763; fps: 60.3; CPU: 8;  
GST-PERF INFO -->  Timestamp: 0:19:47.288955264; Bps: 776; fps: 60.0; CPU: 7;  
GST-PERF INFO -->  Timestamp: 0:19:48.305432418; Bps: 763; fps: 60.3; CPU: 7;


4K 60fps capture to display (in-place=true)

Example pipeline

gst-launch-1.0 nvcamerasrc queue-size=10 sensor-id=0 fpsRange='60 60' ! "video/x-raw(memory:NVMM),width=3840,height=2160,format=I420,framerate=60/1" ! nvvidconv ! "video/x-raw(memory:NVMM),width=3840,height=2160,format=I420,framerate=60/1" ! cudafilter in-place=true location=./memcpy.so ! perf print-arm-load=true ! nvoverlaysink --gst-debug=0

Performance stats

GST-PERF INFO -->  Timestamp: 0:21:09.056777389; Bps: 771; fps: 60.63; CPU: 17;  
GST-PERF INFO -->  Timestamp: 0:21:10.057380551; Bps: 776; fps: 60.0; CPU: 13;  
GST-PERF INFO -->  Timestamp: 0:21:11.058196962; Bps: 776; fps: 60.0; CPU: 16;  
GST-PERF INFO -->  Timestamp: 0:21:12.074104172; Bps: 764; fps: 60.9; CPU: 16;  
GST-PERF INFO -->  Timestamp: 0:21:13.074630372; Bps: 776; fps: 60.0; CPU: 15;  
GST-PERF INFO -->  Timestamp: 0:21:14.091400223; Bps: 763; fps: 60.3; CPU: 15;  
GST-PERF INFO -->  Timestamp: 0:21:15.097895519; Bps: 771; fps: 59.64; CPU: 14;  
GST-PERF INFO -->  Timestamp: 0:21:16.110965925; Bps: 766; fps: 59.23; CPU: 14;  
GST-PERF INFO -->  Timestamp: 0:21:17.121792522; Bps: 768; fps: 59.40; CPU: 14;  
GST-PERF INFO -->  Timestamp: 0:21:18.132254616; Bps: 768; fps: 59.40; CPU: 13;


720p 60fps videotestsrc to display (in-place=true)

Example pipeline

gst-launch-1.0 videotestsrc is-live=true ! "video/x-raw,width=1280,height=720,format=I420,framerate=60/1" ! nvvidconv ! "video/x-raw(memory:NVMM),width=1280,height=720,format=I420,framerate=60/1" ! cudafilter in-place=true location=./memcpy.so ! perf print-arm-load=true ! nvoverlaysink --gst-debug=0

Performance stats

GST-PERF INFO -->  Timestamp: 0:22:07.386021069; Bps: 764; fps: 64.3; CPU: 20;  
GST-PERF INFO -->  Timestamp: 0:22:08.386441053; Bps: 776; fps: 60.0; CPU: 20;  
GST-PERF INFO -->  Timestamp: 0:22:09.386539808; Bps: 776; fps: 60.0; CPU: 18;  
GST-PERF INFO -->  Timestamp: 0:22:10.403048527; Bps: 763; fps: 60.3; CPU: 20;  
GST-PERF INFO -->  Timestamp: 0:22:11.419435652; Bps: 763; fps: 60.3; CPU: 20;  
GST-PERF INFO -->  Timestamp: 0:22:12.436397894; Bps: 763; fps: 60.3; CPU: 22;  
GST-PERF INFO -->  Timestamp: 0:22:13.436511097; Bps: 776; fps: 60.0; CPU: 22;  
GST-PERF INFO -->  Timestamp: 0:22:14.452705935; Bps: 763; fps: 60.3; CPU: 22;  
GST-PERF INFO -->  Timestamp: 0:22:15.453137400; Bps: 776; fps: 60.0; CPU: 21;  
GST-PERF INFO -->  Timestamp: 0:22:16.469405139; Bps: 763; fps: 60.3; CPU: 21;


1080p 60fps capture to display (in-place=false)

Example pipeline

gst-launch-1.0 nvcamerasrc queue-size=10 sensor-id=0 fpsRange='60 60' ! "video/x-raw(memory:NVMM),width=1920,height=1080,format=I420,framerate=60/1" ! nvvidconv ! "video/x-raw(memory:NVMM),width=1920,height=1080,format=I420,framerate=60/1" ! cudafilter in-place=false location=./memcpy.so ! nvvidconv ! perf print-arm-load=true ! nvoverlaysink --gst-debug=0

Performance stats

GST-PERF INFO -->  Timestamp: 0:23:01.138137454; Bps: 767; fps: 59.34; CPU: 22;  
GST-PERF INFO -->  Timestamp: 0:23:02.154873022; Bps: 763; fps: 60.3; CPU: 26;  
GST-PERF INFO -->  Timestamp: 0:23:03.171479180; Bps: 763; fps: 60.3; CPU: 29;  
GST-PERF INFO -->  Timestamp: 0:23:04.188158165; Bps: 763; fps: 60.3; CPU: 25;  
GST-PERF INFO -->  Timestamp: 0:23:05.188244497; Bps: 776; fps: 60.0; CPU: 21;  
GST-PERF INFO -->  Timestamp: 0:23:06.188254958; Bps: 776; fps: 60.0; CPU: 22;  
GST-PERF INFO -->  Timestamp: 0:23:07.204520450; Bps: 763; fps: 60.3; CPU: 19;  
GST-PERF INFO -->  Timestamp: 0:23:08.204789584; Bps: 776; fps: 60.0; CPU: 20;  
GST-PERF INFO -->  Timestamp: 0:23:09.204948578; Bps: 776; fps: 60.0; CPU: 20;  
GST-PERF INFO -->  Timestamp: 0:23:10.221653172; Bps: 763; fps: 60.3; CPU: 20;


4K 60fps capture to fakesink (in-place=false)

Example pipeline

gst-launch-1.0 nvcamerasrc queue-size=10 sensor-id=0 fpsRange='60 60' ! "video/x-raw(memory:NVMM),width=3840,height=2160,format=I420,framerate=60/1" ! nvvidconv ! "video/x-raw(memory:NVMM),width=3840,height=2160,format=I420,framerate=60/1" ! cudafilter in-place=false location=./memcpy.so ! perf print-arm-load=true ! fakesink --gst-debug=0

Performance stats

GST-PERF INFO -->  Timestamp: 0:24:09.089973138; Bps: 12294071; fps: 64.22; CPU: 26;  
GST-PERF INFO -->  Timestamp: 0:24:10.101478081; Bps: 12306231; fps: 59.34; CPU: 21;  
GST-PERF INFO -->  Timestamp: 0:24:11.113397407; Bps: 12306231; fps: 59.34; CPU: 20;  
GST-PERF INFO -->  Timestamp: 0:24:12.124119254; Bps: 12318415; fps: 59.40; CPU: 21;  
GST-PERF INFO -->  Timestamp: 0:24:13.135918813; Bps: 12306231; fps: 59.34; CPU: 22;  
GST-PERF INFO -->  Timestamp: 0:24:14.147912287; Bps: 12306231; fps: 59.34; CPU: 22;  
GST-PERF INFO -->  Timestamp: 0:24:15.158284015; Bps: 12318415; fps: 59.40; CPU: 22;  
GST-PERF INFO -->  Timestamp: 0:24:16.170463292; Bps: 12294071; fps: 59.28; CPU: 24;  
GST-PERF INFO -->  Timestamp: 0:24:17.180258276; Bps: 12330624; fps: 59.46; CPU: 24;  
GST-PERF INFO -->  Timestamp: 0:24:18.193795065; Bps: 12281934; fps: 59.23; CPU: 21;


720p 60fps videotestsrc to display (in-place=false)

Example pipeline

gst-launch-1.0 videotestsrc is-live=true ! "video/x-raw,width=1280,height=720,format=I420,framerate=60/1" ! nvvidconv ! "video/x-raw(memory:NVMM),width=1280,height=720,format=I420,framerate=60/1" ! cudafilter in-place=false location=./memcpy.so ! nvvidconv ! perf print-arm-load=true ! nvoverlaysink --gst-debug=0

Performance stats

GST-PERF INFO -->  Timestamp: 0:24:57.867517465; Bps: 763; fps: 60.3; CPU: 18;  
GST-PERF INFO -->  Timestamp: 0:24:58.884439856; Bps: 763; fps: 60.3; CPU: 16;  
GST-PERF INFO -->  Timestamp: 0:24:59.900505960; Bps: 763; fps: 60.3; CPU: 16;  
GST-PERF INFO -->  Timestamp: 0:25:00.900508129; Bps: 776; fps: 60.0; CPU: 16;  
GST-PERF INFO -->  Timestamp: 0:25:01.900516089; Bps: 776; fps: 60.0; CPU: 17;  
GST-PERF INFO -->  Timestamp: 0:25:02.900852285; Bps: 776; fps: 60.0; CPU: 16;  
GST-PERF INFO -->  Timestamp: 0:25:03.917406393; Bps: 763; fps: 60.3; CPU: 17;  
GST-PERF INFO -->  Timestamp: 0:25:04.917408755; Bps: 776; fps: 60.0; CPU: 16;  
GST-PERF INFO -->  Timestamp: 0:25:05.917422898; Bps: 776; fps: 60.0; CPU: 16;  
GST-PERF INFO -->  Timestamp: 0:25:06.934306770; Bps: 763; fps: 60.3; CPU: 17;


←

Example 1: cudafilter

⌂
Home 		→

Unified memory allocator

  1. Features and Limitations
    1. Supported Platforms
  2. Evaluating GstCUDA
  3. Building and Installation Guide
  4. Project Structure
  5. GstCUDA Framework
    1. libGstCUDA API
    2. GstCUDABaseFilter
    3. GstCUDABaseMISO
    4. GstCUDABaseSIMO
    5. GstCUDABaseMIMO
  6. GstCUDA Quick Prototyping Elements
    1. cudafilter
    2. cudamux
    3. cudademux
    4. cudamimo
  7. GstCUDA Algorithm Developer’s Guide
  8. GstCUDA Add-Ons
    1. cudadebayer
  9. Examples
    1. cudafilter
      1. cudafilter: NVMM direct mapping
      2. cudafilter: Unified memory allocator
    2. cudamux
      1. cudamux: NVMM direct mapping
      2. cudamux: Unified memory allocator
    3. cudadebayer
    4. opencv
      1. opencvwarp
      2. opencvfilter
  10. Performance Profiling
  11. Contact Us


Retrieved from "http://developer.ridgerun.com/wiki/index.php?title=GstCUDA_-_Example_-_cudafilter:_NVMM_direct_mapping&oldid=22690"