JP5060487B2 - ダイナミックメモリサイジングのレイテンシを最適化する方法、システムおよびプログラム - Google Patents
ダイナミックメモリサイジングのレイテンシを最適化する方法、システムおよびプログラム Download PDFInfo
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- JP5060487B2 JP5060487B2 JP2008538127A JP2008538127A JP5060487B2 JP 5060487 B2 JP5060487 B2 JP 5060487B2 JP 2008538127 A JP2008538127 A JP 2008538127A JP 2008538127 A JP2008538127 A JP 2008538127A JP 5060487 B2 JP5060487 B2 JP 5060487B2
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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
- G06F12/02—Addressing or allocation; Relocation
- G06F12/08—Addressing or allocation; Relocation in hierarchically structured memory systems, e.g. virtual memory systems
- G06F12/0802—Addressing of a memory level in which the access to the desired data or data block requires associative addressing means, e.g. caches
- G06F12/0804—Addressing of a memory level in which the access to the desired data or data block requires associative addressing means, e.g. caches with main memory updating
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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
- G06F12/02—Addressing or allocation; Relocation
- G06F12/08—Addressing or allocation; Relocation in hierarchically structured memory systems, e.g. virtual memory systems
- G06F12/12—Replacement control
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
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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
- G06F12/02—Addressing or allocation; Relocation
- G06F12/06—Addressing a physical block of locations, e.g. base addressing, module addressing, memory dedication
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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
- G06F12/02—Addressing or allocation; Relocation
- G06F12/08—Addressing or allocation; Relocation in hierarchically structured memory systems, e.g. virtual memory systems
- G06F12/12—Replacement control
- G06F12/121—Replacement control using replacement algorithms
- G06F12/126—Replacement control using replacement algorithms with special data handling, e.g. priority of data or instructions, handling errors or pinning
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2212/00—Indexing scheme relating to accessing, addressing or allocation within memory systems or architectures
- G06F2212/10—Providing a specific technical effect
- G06F2212/1028—Power efficiency
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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Description
Claims (12)
- ダイナミックメモリサイジングのレイテンシを最適化するシステムであって、
それぞれが少なくとも1つのウェイを有する複数のブロックを含むメモリと、
特定の電力供給状態を出るときにクリアされ、前記複数のブロックの少なくとも1つのブロックがアクセスされたか否かを示すウォームビットと、前記複数のブロックの少なくとも1つのブロックが変更されたか否かを示すダーティビットとを生成するロジックと、
前記複数のブロックの特定のブロックをアクティブまたは非アクティブにするよう前記メモリに要求するプロセッサと、
キャッシュコヒーレンシープロトコルまたは書き込み無効プロトコルにより定義される前記複数のブロックの状態を示す状態ビットを無効に設定するよう要求する制御ロジックと、
を備え、
前記制御ロジックは、
前記特定のブロックが起動する間、前記状態ビットが保持されていたか否かをチェックし、
前記状態ビットが保持されていなかった場合、すべての状態ビットを無効に設定し、
前記状態ビットが保持されていた場合、前記特定のブロックを選択して、前記特定のブロックが前記ウォームビットによりマークされているかどうかを決定し、前記特定のブロックが前記ウォームビットによりマークされている場合に、前記特定のブロックの前記状態ビットを無効に設定し、
前記制御ロジックは、
前記特定のブロックが非アクティブである間、前記特定のブロックを選択して、前記特定のブロックが前記ダーティビットによりマークされているかどうかを決定し、
前記特定のブロックが前記ダーティビットによりマークされている場合、前記特定のブロックのエントリを無効にする、
システム。 - 前記ロジックは、各ダーティビットに対し少なくとも1つのウォームビットを生成する、
請求項1に記載のシステム。 - 前記少なくとも1つのウェイは、前記メモリの2つ以上のサブブロックを含む、
請求項1または請求項2に記載のシステム。 - 前記ロジックは、パワーマネジメントロジック、前記制御ロジックおよびオペレーティングシステムの少なくとも1つの上で動作する、
請求項1から請求項3までの何れか一項に記載のシステム。 - 前記メモリは、前記プロセッサを含むパッケージに内蔵された同期式ランダムアクセスメモリである、
請求項1から請求項4までの何れか一項に記載のシステム。 - 前記プロセッサは、第1のコアおよび第2のコアを少なくとも含む、
請求項1から請求項5までの何れか一項に記載のシステム。 - 前記第1のコアは、第1の一意の識別子を有し、
前記第2のコアは、第2の一意の識別子を有し、
前記メモリは、特定のコアの前記識別子に基づき、前記特定のコアの状態変数をリストアする、
請求項6に記載のシステム。 - ダイナミックメモリサイジングのレイテンシを最適化する方法であって、
特定の電力供給状態を出るときにクリアされ、メモリの複数のブロックの少なくとも1つのブロックがアクセスされたか否かを示すウォームビットと、前記複数のブロックの少なくとも1つのブロックが変更されたか否かを示すダーティビットとを生成する段階と、
前記メモリの前記複数のブロックの特定のブロックをアクティブまたは非アクティブにする要求を受信する段階と、
前記特定のブロックが起動する間、キャッシュコヒーレンシープロトコルまたは書き込み無効プロトコルにより定義される前記複数のブロックの状態を示す状態ビットが保持されていたか否かをチェックする段階と、
前記状態ビットが保持されていなかった場合、すべての状態ビットを無効に設定する段階と、
前記状態ビットが保持されていた場合、前記特定のブロックを選択して、前記特定のブロックが前記ウォームビットによりマークされているかどうかを決定し、前記特定のブロックが前記ウォームビットによりマークされている場合に、前記特定のブロックの前記状態ビットを無効に設定する段階と、
前記特定のブロックが非アクティブである間、前記特定のブロックを選択して、前記特定のブロックが前記ダーティビットによりマークされているかどうかを決定する段階と、
前記特定のブロックが前記ダーティビットによりマークされている場合、前記特定のブロックのエントリを無効にする段階と、
を含む方法。 - 前記ウォームビットは、メモリトランザクションアドレス、ウェイ選択、ライトイネーブルおよびトランザクションタイプ情報の少なくとも1つから導かれる、
請求項8に記載の方法。 - 前記要求は、特定の電力供給状態から他の電力供給状態への移行中に生成される、
請求項8または請求項9に記載の方法。 - 前記ウォームビット、および/または、前記ダーティビットをクリアする段階をさらに含む、
請求項8から請求項10までの何れか一項に記載の方法。 - コンピュータに、ダイナミックメモリサイジングのレイテンシを最適化する複数の手順を実行させるためのプログラムであって、
コンピュータに、請求項8から請求項11までの何れか一項に記載の方法を実行させるためのプログラム。
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US11/323,259 US20070156992A1 (en) | 2005-12-30 | 2005-12-30 | Method and system for optimizing latency of dynamic memory sizing |
US11/323,259 | 2005-12-30 | ||
PCT/US2006/047364 WO2007078724A2 (en) | 2005-12-30 | 2006-12-11 | Method and system for optimizing latency of dynamic memory sizing |
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JP2009514114A JP2009514114A (ja) | 2009-04-02 |
JP2009514114A5 JP2009514114A5 (ja) | 2011-09-08 |
JP5060487B2 true JP5060487B2 (ja) | 2012-10-31 |
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US (1) | US20070156992A1 (ja) |
JP (1) | JP5060487B2 (ja) |
KR (1) | KR20080080586A (ja) |
CN (1) | CN101356508B (ja) |
DE (1) | DE112006002835B4 (ja) |
TW (1) | TWI336437B (ja) |
WO (1) | WO2007078724A2 (ja) |
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DE112006002835B4 (de) | 2013-02-28 |
JP2009514114A (ja) | 2009-04-02 |
DE112006002835T5 (de) | 2008-11-13 |
KR20080080586A (ko) | 2008-09-04 |
CN101356508A (zh) | 2009-01-28 |
WO2007078724A3 (en) | 2007-11-01 |
CN101356508B (zh) | 2015-08-05 |
US20070156992A1 (en) | 2007-07-05 |
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