OpenCL programming guide:
Saved in:
| Format: | Book |
|---|---|
| Language: | English |
| Published: |
Boston [u.a.]
Addison-Wesley
2012
|
| Series: | OpenGL series
|
| Subjects: | |
| Online Access: | Inhaltsverzeichnis |
| Item Description: | Hier auch später erschienene, unveränderte Nachdrucke |
| Physical Description: | XLIV, 603 S. Ill., graph. Darst. |
| ISBN: | 9780321749642 0321749642 |
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| 245 | 1 | 0 | |a OpenCL programming guide |c Aaftab Munshi ... |
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| _version_ | 1824553987955752960 |
| adam_text | Titel: OpenCL programming guide
Autor: Munshi, Aaftab
Jahr: 2011
Contents
Figures..................................................xv
Tables...................................................xxi
Listings.................................................xxv
Foreword................................................xxix
Preface................................................xxxiii
Acknowledgments.........................................xli
About the Authors........................................xliii
Part I The OpenCL 1.1 Language and API...............1
1. An Introduction to OpenCL..................................3
What Is OpenCL, or . .. Why You Need This Book...............3
Our Many-Core Future: Heterogeneous Platforms................4
Software in a Many-Core World..............................7
Conceptual Foundations of OpenCL.........................11
Platform Model.......................................12
Execution Model......................................13
Memory Model.......................................21
Programming Models..................................24
OpenCL and Graphics.....................................29
The Contents of OpenCL..................................30
Platform API.........................................31
Runtime API.........................................31
Kernel Programming Language..........................32
OpenCL Summary.....................................34
The Embedded Profile.....................................35
Learning OpenCL........................................36
2. HelloWorld: An OpenCL Example............................39
Building the Examples.....................................40
Prerequisites..........................................40
Mac OS X and Code::Blocks.............................41
Microsoft Windows and Visual Studio.....................42
Linux and Eclipse.....................................44
HelloWorld Example......................................45
Choosing an OpenCL Platform and Creating a Context.......49
Choosing a Device and Creating a Command-Queue.........50
Creating and Building a Program Object...................52
Creating Kernel and Memory Objects.....................54
Executing a Kernel....................................55
Checking for Errors in OpenCL.............................57
3. Platforms, Contexts, and Devices............................63
OpenCL Platforms........................................63
OpenCL Devices.........................................68
OpenCL Contexts........................................83
4. Programming with OpenCL C...............................97
Writing a Data-Parallel Kernel Using OpenCL C................97
Scalar Data Types.........................................99
The half Data Type..................................101
Vector Data Types.......................................102
Vector Literals.......................................104
Vector Components...................................106
Other Data Types........................................108
Derived Types..........................................109
Implicit Type Conversions.................................110
Usual Arithmetic Conversions..........................114
Explicit Casts...........................................116
Explicit Conversions.....................................117
Reinterpreting Data as Another Type........................121
Vector Operators........................................123
Arithmetic Operators.................................124
Relational and Equality Operators.......................127
vi Contents
Bitwise Operators....................................127
Logical Operators....................................128
Conditional Operator.................................129
Shift Operators......................................129
Unary Operators.....................................131
Assignment Operator.................................132
Qualifiers..............................................133
Function Qualifiers...................................133
Kernel Attribute Qualifiers.............................134
Address Space Qualifiers...............................135
Access Qualifiers.....................................140
Type Qualifiers......................................141
Keywords..............................................141
Preprocessor Directives and Macros.........................141
Pragma Directives....................................143
Macros.............................................145
Restrictions............................................146
5. OpenCL C Built-in Functions...............................149
Work-Item Functions.....................................150
Math Functions.........................................153
Floating-Point Pragmas................................162
Floating-Point Constants..............................162
Relative Error as ulps.................................163
Integer Functions........................................168
Common Functions.....................................172
Geometric Functions.....................................175
Relational Functions.....................................175
Vector Data Load and Store Functions.......................181
Synchronization Functions................................190
Async Copy and Prefetch Functions.........................191
Atomic Functions.......................................195
Miscellaneous Vector Functions............................199
Image Read and Write Functions...........................201
Reading from an Image................................201
Samplers...........................................206
Determining the Border Color..........................209
Contents vii
Writing to an Image..................................210
Querying Image Information...........................214
6. Programs and Kernels....................................217
Program and Kernel Object Overview.......................217
Program Objects........................................218
Creating and Building Programs........................218
Program Build Options................................222
Creating Programs from Binaries........................227
Managing and Querying Programs......................236
Kernel Objects..........................................237
Creating Kernel Objects and Setting Kernel Arguments......237
Thread Safety........................................241
Managing and Querying Kernels........................242
7. Buffers and Sub-Buffers...................................247
Memory Objects, Buffers, and Sub-Buffers Overview............247
Creating Buffers and Sub-Buffers...........................249
Querying Buffers and Sub-Buffers...........................257
Reading, Writing, and Copying Buffers and Sub-Buffers.........259
Mapping Buffers and Sub-Buffers...........................276
8. Images and Samplers.....................................281
Image and Sampler Object Overview........................281
Creating Image Objects ..................................283
Image Formats.......................................287
Querying for Image Support............................291
Creating Sampler Objects.................................292
OpenCL C Functions for Working with Images................295
Transferring Image Objects................................299
9. Events..................................................309
Commands, Queues, and Events Overview...................309
Events and Command-Queues.............................311
Event Objects...........................................317
viii Contents
Generating Events on the Host.............................321
Events Impacting Execution on the Host.....................322
Using Events for Profiling.................................327
Events Inside Kernels.....................................332
Events from Outside OpenCL..............................333
10. Interoperability with OpenGL...............................335
OpenCL/OpenGL Sharing Overview........................335
Querying for the OpenGL Sharing Extension.................336
Initializing an OpenCL Context for OpenGL Interoperability .... 338
Creating OpenCL Buffers from OpenGL Buffers...............339
Creating OpenCL Image Objects from OpenGL Textures........344
Querying Information about OpenGL Objects.................347
Synchronization between OpenGL and OpenCL...............348
11. Interoperability with Direct3D..............................353
Direct3D/OpenCL Sharing Overview........................353
Initializing an OpenCL Context for Direct3D Interoperability.... 354
Creating OpenCL Memory Objects from Direct3D Buffers
and Textures..........................................357
Acquiring and Releasing Direct3D Objects in OpenCL..........361
Processing a Direct3D Texture in OpenCL....................363
Processing D3D Vertex Data in OpenCL......................366
12. C++ Wrapper API.........................................369
C++ Wrapper API Overview...............................369
C++ Wrapper API Exceptions..............................371
Vector Add Example Using the C++ Wrapper API..............374
Choosing an OpenCL Platform and Creating a Context......375
Choosing a Device and Creating a Command-Queue........376
Creating and Building a Program Object..................377
Creating Kernel and Memory Objects....................377
Executing the Vector Add Kernel........................378
Contents ix
13. OpenCL Embedded Profile ................................383
OpenCL Profile Overview.................................383
64-Bit Integers..........................................385
Images................................................386
Built-in Atomic Functions.................................387
Mandated Minimum Single-Precision Floating-Point
Capabilities...........................................387
Determining the Profile Supported by a Device in an
OpenCL C Program....................................390
Part II OpenCL 1.1 Case Studies....................391
14. Image Histogram.........................................393
Computing an Image Histogram...........................393
Parallelizing the Image Histogram..........................395
Additional Optimizations to the Parallel Image Histogram.......400
Computing Histograms with Half-Float or Float Values for
Each Channel..........................................403
15. Sobel Edge Detection Filter................................407
What Is a Sobel Edge Detection Filter?.......................407
Implementing the Sobel Filter as an OpenCL Kernel............407
16. Parallelizing Dijkstra s Single-Source Shortest-Path
Graph Algorithm.........................................411
Graph Data Structures ...................................412
Kernels................................................414
Leveraging Multiple Compute Devices.......................417
17. Cloth Simulation in the Bullet Physics SDK...................425
An Introduction to Cloth Simulation........................425
Simulating the Soft Body.................................429
Executing the Simulation on the CPU.......................431
Changes Necessary for Basic GPU Execution..................432
Two-Layered Batching....................................438
Contents
Optimizing for SIMD Computation and Local Memory.........441
Adding OpenGL Interoperation............................446
18. Simulating the Ocean with Fast Fourier Transform.............449
An Overview of the Ocean Application......................450
Phillips Spectrum Generation..............................453
An OpenCL Discrete Fourier Transform......................457
Determining 2D Decomposition........................457
Using Local Memory..................................459
Determining the Sub-Transform Size.....................459
Determining the Work-Group Size ......................460
Obtaining the Twiddle Factors..........................461
Determining How Much Local Memory Is Needed..........462
Avoiding Local Memory Bank Conflicts...................463
Using Images........................................463
A Closer Look at the FFT Kernel............................463
A Closer Look at the Transpose Kernel.......................467
19. Optical Flow.............................................469
Optical Flow Problem Overview............................469
Sub-Pixel Accuracy with Hardware Linear Interpolation.........480
Application of the Texture Cache...........................480
Using Local Memory.....................................481
Early Exit and Hardware Scheduling........................483
Efficient Visualization with OpenGL Interop..................483
Performance............................................484
20. Using OpenCL with PyOpenCL.............................487
Introducing PyOpenCL...................................487
Running the PyImageFilter2D Example......................488
PyImageFilter2D Code....................................488
Context and Command-Queue Creation.....................492
Loading to an Image Object...............................493
Creating and Building a Program...........................494
Setting Kernel Arguments and Executing a Kernel..............495
Reading the Results......................................496
Contents xi
21. Matrix Multiplication with OpenCL...........................499
The Basic Matrix Multiplication Algorithm...................499
A Direct Translation into OpenCL..........................501
Increasing the Amount of Work per Kernel...................506
Optimizing Memory Movement: Local Memory...............509
Performance Results and Optimizing the Original CPU Code .... 511
22. Sparse Matrix-Vector Multiplication..........................515
Sparse Matrix-Vector Multiplication (SpMV) Algorithm.........515
Description of This Implementation.........................518
Tiled and Packetized Sparse Matrix Representation.............519
Header Structure........................................522
Tiled and Packetized Sparse Matrix Design Considerations.......523
Optional Team Information...............................524
Tested Hardware Devices and Results........................524
Additional Areas of Optimization...........................538
A. Summary of OpenCL 1.1...................................541
The OpenCL Platform Layer...............................541
Contexts...........................................541
Querying Platform Information and Devices...............542
The OpenCL Runtime....................................543
Command-Queues...................................543
Buffer Objects..........................................544
Create Buffer Objects..................................544
Read, Write, and Copy Buffer Objects....................544
Map Buffer Objects...................................545
Manage Buffer Objects................................545
Query Buffer Objects..................................545
Program Objects........................................546
Create Program Objects................................546
Build Program Executable..............................546
Build Options.......................................546
Query Program Objects................................547
Unload the OpenCL Compiler..........................547
xii Contents
Kernel and Event Objects.................................547
Create Kernel Objects.................................547
Kernel Arguments and Object Queries....................548
Execute Kernels......................................548
Event Objects........................................549
Out-of-Order Execution of Kernels and Memory
Object Commands..................................549
Profiling Operations..................................549
Flush and Finish.....................................550
Supported Data Types....................................550
Built-in Scalar Data Types..............................550
Built-in Vector Data Types.............................551
Other Built-in Data Types..............................551
Reserved Data Types..................................551
Vector Component Addressing.............................552
Vector Components...................................552
Vector Addressing Equivalencies.........................553
Conversions and Type Casting Examples..................554
Operators...........................................554
Address Space Qualifiers...............................554
Function Qualifiers...................................554
Preprocessor Directives and Macros.........................555
Specify Type Attributes...................................555
Math Constants.........................................556
Work-Item Built-in Functions .............................557
Integer Built-in Functions.................................557
Common Built-in Functions...............................559
Math Built-in Functions..................................560
Geometric Built-in Functions..............................563
Relational Built-in Functions..............................564
Vector Data Load/Store Functions...........................567
Atomic Functions.......................................568
Async Copies and Prefetch Functions........................570
Synchronization, Explicit Memory Fence.....................570
Miscellaneous Vector Built-in Functions.....................571
Image Read and Write Built-in Functions.....................572
Contents xiii
Image Objects..........................................573
Create Image Objects..................................573
Query List of Supported Image Formats ..................574
Copy between Image, Buffer Objects.....................574
Map and Unmap Image Objects.........................574
Read, Write, Copy Image Objects........................575
Query Image Objects..................................575
Image Formats..........................................576
Access Qualifiers........................................576
Sampler Objects.........................................576
Sampler Declaration Fields................................577
OpenCL Device Architecture Diagram.......................577
OpenCL/OpenGL Sharing APIs.............................577
CL Buffer Objects GL Buffer Objects....................578
CL Image Objects GL Textures.........................578
CL Image Objects GL Renderbuffers....................578
Query Information...................................578
Share Objects........................................579
CL Event Objects GL Sync Objects......................579
CL Context GL Context, Sharegroup....................579
OpenCL/Direct3D 10 Sharing APIs..........................579
Index...................................................581
xiv Contents
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| indexdate | 2025-02-20T06:44:37Z |
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| isbn | 9780321749642 0321749642 |
| language | English |
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| spellingShingle | OpenCL programming guide Programmiersprache (DE-588)4047409-4 gnd Parallelverarbeitung (DE-588)4075860-6 gnd Software Engineering (DE-588)4116521-4 gnd |
| subject_GND | (DE-588)4047409-4 (DE-588)4075860-6 (DE-588)4116521-4 |
| title | OpenCL programming guide |
| title_auth | OpenCL programming guide |
| title_exact_search | OpenCL programming guide |
| title_full | OpenCL programming guide Aaftab Munshi ... |
| title_fullStr | OpenCL programming guide Aaftab Munshi ... |
| title_full_unstemmed | OpenCL programming guide Aaftab Munshi ... |
| title_short | OpenCL programming guide |
| title_sort | opencl programming guide |
| topic | Programmiersprache (DE-588)4047409-4 gnd Parallelverarbeitung (DE-588)4075860-6 gnd Software Engineering (DE-588)4116521-4 gnd |
| topic_facet | Programmiersprache Parallelverarbeitung Software Engineering |
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Indexes
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