JP6104671B2 - マルチプロセッサシステム、装置、及び方法 - Google Patents
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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
- G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
- G06F9/38—Concurrent instruction execution, e.g. pipeline or look ahead
- G06F9/3824—Operand accessing
- G06F9/3834—Maintaining memory consistency
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F12/00—Accessing, addressing or allocating within memory systems or architectures
- G06F12/14—Protection against unauthorised use of memory or access to memory
- G06F12/1458—Protection against unauthorised use of memory or access to memory by checking the subject access rights
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/30—Monitoring
- G06F11/34—Recording or statistical evaluation of computer activity, e.g. of down time, of input/output operation ; Recording or statistical evaluation of user activity, e.g. usability assessment
- G06F11/3409—Recording or statistical evaluation of computer activity, e.g. of down time, of input/output operation ; Recording or statistical evaluation of user activity, e.g. usability assessment for performance assessment
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/36—Preventing errors by testing or debugging software
- G06F11/362—Software debugging
- G06F11/3636—Software debugging by tracing the execution of the program
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F8/00—Arrangements for software engineering
- G06F8/40—Transformation of program code
- G06F8/41—Compilation
- G06F8/44—Encoding
- G06F8/443—Optimisation
- G06F8/4441—Reducing the execution time required by the program code
- G06F8/4442—Reducing the number of cache misses; Data prefetching
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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
- G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
- G06F9/30181—Instruction operation extension or modification
- G06F9/30185—Instruction operation extension or modification according to one or more bits in the instruction, e.g. prefix, sub-opcode
-
- 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
- G06F9/5011—Allocation of resources, e.g. of the central processing unit [CPU] to service a request the resources being hardware resources other than CPUs, Servers and Terminals
- G06F9/5016—Allocation of resources, e.g. of the central processing unit [CPU] to service a request the resources being hardware resources other than CPUs, Servers and Terminals the resource being the memory
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/30—Monitoring
- G06F11/34—Recording or statistical evaluation of computer activity, e.g. of down time, of input/output operation ; Recording or statistical evaluation of user activity, e.g. usability assessment
- G06F11/3466—Performance evaluation by tracing or monitoring
- G06F11/3471—Address tracing
-
- 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
- G06F9/44—Arrangements for executing specific programs
- G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
- G06F9/45504—Abstract machines for programme code execution, e.g. Java virtual machine [JVM], interpreters, emulators
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- Computer Hardware Design (AREA)
- Quality & Reliability (AREA)
- Computer Security & Cryptography (AREA)
- Debugging And Monitoring (AREA)
- Multi Processors (AREA)
Description
されたハードウェア要素(メモリウォッチユニットとも称する)と、そのようなハードウェア要素、複数の処理要素、各処理要素がアクセス可能であるメモリ、及び複数の処理要素によって実行される一連のコードを生成するように構成されたシーケンサを含むマルチプロセッサシステムとが開示される。
成する。タスク完了を示す処理要素からの信号(アクション通知(Action Indication)
とも称する)は、更に、その後のタスクの実行を制御するために、制御プリミティブとともに使用される。このように、UMLに定められた一連のタスクは、シーケンスプロセッサ16の動作を制御するために自動的にマイクロコードにコンパイル可能である。このマイクロコードは、処理要素12における動作をトリガするためのアクション呼び出し(AI)を生成する。
ータ依存性がある場合にアクションを実施するために必要とされる最小および最大の実行サイクル数に関するデータ。(6)アクションの優先度の定義。(7)最早開始時間または最遅終了時間の定義(すなわち、アクションがそれより前に始まってはならない時間や、そのときまでに完了されなければならないという時間)。(8)アクションの完了の際に制御が返される先となるべき一連の動作内における位置の定義。
きる。これらの信号は、メモリアドレスと、メモリ位置のデータ内容と、処理要素12を制御する一連のコードの実行中の様々な時点で発生することが予期されたり発生すべきなかったりするメモリ制御信号とを含むことができる。
、システム「デバッグ」段階中にソフトウェア実行を「停止(break)」して、外部シス
テムにトレースデータを出力することで、プログラマが問題を見つけることを可能にする。更なる実施形態では、警告信号を、割り込みコントローラに送って、(制御プロセッサに送られるであろう)システム割り込みを生成してもよいし、シーケンスプロセッサ16に送って例外処理ルーチンをトリガしてメモリ違反に対応してもよい。
Claims (14)
- 複数の処理要素と、前記処理要素のそれぞれがアクセス可能なメモリと、前記複数の処理要素によって実行される一連のコードを生成するように構成されたシーケンサとを含むシステムにおける方法であって、
前記一連のコードの実行中に、当該一連のコードをさらに実行する場合に適用すべきメモリアクセスルールを示す複数の信号を受信するステップと、
前記場合において、前記複数の処理要素によるメモリアクセスに対して前記メモリアクセスルールを適用するステップと、
処理要素によるメモリアクセスが前記ルールの1つ以上に違反しているときに、警告信号を生成するステップと、
を含む方法。 - 前記複数の信号は、1つ以上のメモリアドレスと、当該1つ以上のメモリアドレスにおいて予期されるデータ内容とを示す1つ以上の信号を含む、
請求項1に記載の方法。 - 前記複数の信号は、特定のメモリアドレスと、前記特定のメモリアドレスにアクセスすることが予期される処理要素とを示す1つ以上の信号を含む、
請求項1又は2に記載の方法。 - 前記警告信号の生成の際に、前記1つ以上のルール違反の結果に対処するための処理を行うステップ、
をさらに含む、請求項1から3のいずれか1項に記載の方法。 - 前記処理は、
前記一連のコードの一部又は全部の実行の中断、
前記違反前のメモリアクセスのトレースデータの出力、
例外対処ルーチンのトリガ、
の1つ以上を含む、
請求項4に記載の方法。 - 処理要素によるメモリアクセスが、当該処理要素によるアクセスが制限されているメモリアドレスを指定している場合に、違反が発生したとみなす、
請求項1から5のいずれか1項に記載の方法。 - メモリアクセスが、読み出し専用メモリアドレスへの書き込み動作を指定している場合に、違反が発生したとみなす、
請求項1から6のいずれか1項に記載の方法。 - メモリアクセスが、前記メモリアクセスルールの1つに指定された値と異なるデータ値を指定している場合に、違反が発生したとみなす、
請求項1から7のいずれか1項に記載の方法。 - 前記メモリに接続された1つ以上のバス上のメモリアクセスを検出するステップ
をさらに含む、請求項1から8のいずれか1項に記載の方法。 - 前記複数の信号は、前記シーケンサから受信される、
請求項1から9のいずれか1項に記載の方法。 - 前記複数の信号は、前記一連のコードの実行の進行に伴って前記メモリアクセスルールを動的にアップデートする、
請求項10に記載の方法。 - デバッグを目的として提供されるトレースデータ取得回路上で実施される、
請求項1から11のいずれか1項に記載の方法。 - マルチプロセッサシステムにおいて使用されるハードウェア要素であって、
請求項1から12のいずれか1項に記載の方法を実施するように構成された、
ハードウェア要素。 - 複数の処理要素と、
前記処理要素のそれぞれがアクセス可能であるメモリと、
前記複数の処理要素によって実行される一連のコードを生成するように構成されたシーケンサと、
請求項13に記載のハードウェア要素と、
を備えるマルチプロセッサシステム。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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GB1205737.8 | 2012-03-30 | ||
GB1205737.8A GB2500707B (en) | 2012-03-30 | 2012-03-30 | Multiprocessor system, apparatus and methods |
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JP2013218680A JP2013218680A (ja) | 2013-10-24 |
JP6104671B2 true JP6104671B2 (ja) | 2017-03-29 |
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JP2013072004A Active JP6104671B2 (ja) | 2012-03-30 | 2013-03-29 | マルチプロセッサシステム、装置、及び方法 |
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Country | Link |
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US (1) | US9600422B2 (ja) |
EP (1) | EP2645258B1 (ja) |
JP (1) | JP6104671B2 (ja) |
CN (1) | CN103593320B (ja) |
GB (1) | GB2500707B (ja) |
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GB2500707B (en) | 2012-03-30 | 2014-09-17 | Cognovo Ltd | Multiprocessor system, apparatus and methods |
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- 2012-11-30 US US13/691,630 patent/US9600422B2/en active Active
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GB2500707A (en) | 2013-10-02 |
GB201205737D0 (en) | 2012-05-16 |
US20130262806A1 (en) | 2013-10-03 |
EP2645258A1 (en) | 2013-10-02 |
US9600422B2 (en) | 2017-03-21 |
EP2645258B1 (en) | 2016-05-18 |
GB2500707B (en) | 2014-09-17 |
JP2013218680A (ja) | 2013-10-24 |
CN103593320B (zh) | 2018-03-09 |
CN103593320A (zh) | 2014-02-19 |
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