JP4450853B2 - 負荷分散 - Google Patents
負荷分散 Download PDFInfo
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- JP4450853B2 JP4450853B2 JP2007532499A JP2007532499A JP4450853B2 JP 4450853 B2 JP4450853 B2 JP 4450853B2 JP 2007532499 A JP2007532499 A JP 2007532499A JP 2007532499 A JP2007532499 A JP 2007532499A JP 4450853 B2 JP4450853 B2 JP 4450853B2
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T15/00—3D [Three Dimensional] image rendering
- G06T15/005—General purpose rendering architectures
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/46—Multiprogramming arrangements
- G06F9/50—Allocation of resources, e.g. of the central processing unit [CPU]
- G06F9/5005—Allocation of resources, e.g. of the central processing unit [CPU] to service a request
- G06F9/5027—Allocation of resources, e.g. of the central processing unit [CPU] to service a request the resource being a machine, e.g. CPUs, Servers, Terminals
- G06F9/505—Allocation of resources, e.g. of the central processing unit [CPU] to service a request the resource being a machine, e.g. CPUs, Servers, Terminals considering the load
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/46—Multiprogramming arrangements
- G06F9/50—Allocation of resources, e.g. of the central processing unit [CPU]
- G06F9/5061—Partitioning or combining of resources
- G06F9/5066—Algorithms for mapping a plurality of inter-dependent sub-tasks onto a plurality of physical CPUs
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T1/00—General purpose image data processing
- G06T1/20—Processor architectures; Processor configuration, e.g. pipelining
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- G06—COMPUTING; CALCULATING OR COUNTING
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- General Physics & Mathematics (AREA)
- Software Systems (AREA)
- General Engineering & Computer Science (AREA)
- Computer Graphics (AREA)
- Image Generation (AREA)
- Image Processing (AREA)
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Description
1.CPU上で実行しているアプリケーションが、GPUにメモリの一部にある105のような頂点データの場所を指令する。
2.頂点ステージ110が、頂点データをモデル空間からクリッピング空間に変換して、照明計算等を実行する。
3.頂点ステージ110がテクスチャ座標を数式から生成する。
4.三角形、点、四角形等といったプリミティブを、フラグメントへとラスタライズする。
5.フラグメント処理ステージ180を介してフラグメントを処理することによって、フラグメントの色を決定する。当該フラグメント処理ステージ180はまた、幾つかのオペレーションの中で、テクスチャメモリのルックアップも実行する。
6.幾つかのテストを実行して、フラグメントが廃棄されるべきか否かを決定する。
7.ピクセルの色を、少なくとも部分的にはフラグメントの色に基づいて、また、フラグメントの又はピクセルのアルファチャンネルに通常は関連するその他のオペレーションに基づいて、計算する。
8.ピクセル情報をフレームバッファ160に提供する。
9.ピクセルを、ディスプレイ170等によって、表示する。
Transactions On GraphicsにおけるTimothy Purcell等による「プログラム可能なグラフィックハードウェア上でのレイトレーシング」では、GPU上での汎用計算のためにデータを格納及び/又はデータをアクセスする興味深い方法が調査されている。しかしながら、Purcell等によって示唆された手法による一つの問題には、計算の実行の際に全シーンを格納するために必要となる大容量のストレージ能力がある。他の最近の論文、即ち、2002年のGraphics HardwareにおけるNathan Carr等による「レイ・エンジン」には、GPUを採用して、光線と三角形との交差(ray-triangle intersections)を計算する手法が示唆されている。この手法の問題点は、光線と三角形との交差を、一度に一つの三角形についてGPUで計算することにある。かかる手法は、したがって、時間を要するものであり、プログラム可能なGPUによって利用可能な並列処理性能を完全に活用することができない。したがって、グラフィック処理用のレイトレーシングを実行するためにプログラム可能なGPUを使用する更なる技術が望まれている。
Claims (9)
- プログラム可能なグラフィック処理ユニット(GPU)と中央処理ユニット(CPU)との間で負荷を分散する方法であって、
CPUにより、各々が少なくとも部分的に前記GPU及び前記CPUによって処理され得る別個の複数のワークユニットをもつ両端キューを形成するステップであって、前記複数のワークユニットは、一以上の光線がオブジェクトに交差するか否かを決定する一以上のレイトレーシング処理の少なくとも一部分を個別に構成し、前記複数のワークユニットは、複数の光線と前記オブジェクトを境界付ける一以上のバウンディングボリュームとの交差の数によって少なくとも部分的に個別に特定され、前記両端キューにおける複数のワークユニットは、該両端キューの第1端が、該両端キューの第2端に含まれるワークユニットのバウンディングボリュームより多い数の光線の交差を有するバウンディングボリュームを有するワークユニットを含むように順序づけされる、該ステップと、
前記GPUに前記両端キューの前記第1端からワークユニットを選択させ、前記CPUに前記両端キューの第2端からワークユニットを選択させることによって、前記ワークユニットを処理するステップと、
を含む方法。 - 前記処理は、前記CPUが前記GPUへ問い合わせることを含む、請求項1に記載の方法。
- 前記CPUが前記GPUに問い合わせることは、前記CPUが前記GPUへ実質的に所定の間隔で問い合わせることを含む、請求項2に記載の方法。
- 前記CPUが前記GPUに問い合わせることは、前記GPUによって開始された最新のワークユニットの処理の量に少なくとも部分的に基づく時間に、前記CPUが前記GPUへ問い合わせることを含む、請求項2に記載の方法。
- 前記CPUが前記GPUに問い合わせることは、可変の時間に、前記CPUが前記GPUへ問い合わせることを含む、請求項2に記載の方法。
- 前記CPUが前記GPUに問い合わせることは、該CPUがワークユニットを完了したことに少なくとも部分的に応じて、前記CPUが前記GPUへ問い合わせることを含む、請求項2に記載の方法。
- 前記GPUによって処理される前記ワークユニットの少なくとも幾つかについて、処理が前記CPUによって完了される、請求項2記載の方法。
- 前記GPUによって処理される前記ワークユニットの少なくとも幾つかについて、前記CPUが一以上の光線とプリミティブとの交差を計算する、請求項2に記載の方法。
- 前記GPU及び前記CPUによって実行される前記処理は、少なくとも部分的に一時的に一致する、請求項1に記載の方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US61087304P | 2004-09-16 | 2004-09-16 | |
PCT/US2005/033170 WO2006034034A2 (en) | 2004-09-16 | 2005-09-16 | Load balancing |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2008513890A JP2008513890A (ja) | 2008-05-01 |
JP2008513890A5 JP2008513890A5 (ja) | 2010-01-14 |
JP4450853B2 true JP4450853B2 (ja) | 2010-04-14 |
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Application Number | Title | Priority Date | Filing Date |
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JP2007532499A Active JP4450853B2 (ja) | 2004-09-16 | 2005-09-16 | 負荷分散 |
Country Status (4)
Country | Link |
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US (1) | US7868891B2 (ja) |
JP (1) | JP4450853B2 (ja) |
CN (1) | CN101091175B (ja) |
WO (1) | WO2006034034A2 (ja) |
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-
2005
- 2005-09-16 JP JP2007532499A patent/JP4450853B2/ja active Active
- 2005-09-16 CN CN200580031001.1A patent/CN101091175B/zh not_active Expired - Fee Related
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CN101091175B (zh) | 2012-03-14 |
CN101091175A (zh) | 2007-12-19 |
US7868891B2 (en) | 2011-01-11 |
US20060059494A1 (en) | 2006-03-16 |
JP2008513890A (ja) | 2008-05-01 |
WO2006034034A2 (en) | 2006-03-30 |
WO2006034034A3 (en) | 2007-06-21 |
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