JP2012506597A - 認識可能な電力管理を実現する方法 - Google Patents
認識可能な電力管理を実現する方法 Download PDFInfo
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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
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3206—Monitoring of events, devices or parameters that trigger a change in power modality
- G06F1/3209—Monitoring remote activity, e.g. over telephone lines or network connections
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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
-
- 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
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
-
- 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
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3234—Power saving characterised by the action undertaken
- G06F1/324—Power saving characterised by the action undertaken by lowering clock frequency
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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
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3234—Power saving characterised by the action undertaken
- G06F1/3296—Power saving characterised by the action undertaken by lowering the supply or operating voltage
-
- 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]
- G06F9/5094—Allocation of resources, e.g. of the central processing unit [CPU] where the allocation takes into account power or heat criteria
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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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- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
Description
・利用するのに可視的であり、4つの状態G0,G1,G2,G3に分割される全体的なシステム状態であるグローバルシステム状態;
・グローバルシステム状態G1(S5を除く)内にあって、S1,S2,S3,.S4,S5に分割されるスリーピング状態;
・4つの状態D0,D1,D2,D3に分割され、各装置により変更されるユーザに通常は可視的でない装置電力状態;
・グローバルシステム状態G内にあって、C0,C1,C2,C3,C4に分割されるCPUスリープ状態としても知られるCPU電力状態;
・アクティブであるときCPU/装置の電力管理を制御し、ワークロードに依存してクロックスピードと電圧変化とを通常含み、CPIに依存する状態数を有するCPU/装置パフォーマンス状態;
・温度が閾値を超えるとCPUを低パフォーマンス状態にスロットルし、TM1スロットルがデューティサイクルを変更することによって実行され、TM2スロットルがクロックスピード又はコア電圧(P状態)を変更することによって実行されるCPU温度モニタ;
電力管理とCPU又は装置により使用される電力量の決定のため、S1−S4が2〜30秒のウェークアップ遅延を決定することによって、G1状態又はスリーピング状態を確立することは、明らかに有用である。さらに、各種CPU電力状態(C−state)はまた、CPUレベルにおけるオペレーティングシステムの調整電力を有するのに有用な方法を可能にする。C0状態はベースラインであり、この状態においてプロセッサは命令を実行する。C1状態は、最も小さな遅延を有する。この状態におけるハードウェア遅延は、オペレーティングシステムがそれを利用するか否か決定する際に状態の遅延特徴を考慮しないだけ十分低いものでなければならない。非実行電力状態にプロセッサを置くのとは別に、当該状態は他の何れのソフトウェアによる可視的な効果を有しない。これは、10nsの大きさのオーダを有するウェークアップ時間によるアセンブリ命令“halt”を利用することによって、実際の実行では実行される。C2状態は、C1状態に対して電力セービングを向上させる。この状態のワーストケースのハードウェア遅延は、ACPIシステムファームウェアを介し提供され、オペレーティングシステムは、当該情報を利用してC1状態がC2状態の代わりに利用されるべき時点を決定することができる。C2からC0への遷移時間は、100ナノ秒の大きさのオーダであり、当該処理は、プロセッサコアクロック及びプラットフォームI/Oバッファをゲート処理することによって、プロセッサレベルにおいて実現される。プロセッサを非実行電力状態に置くのとは別に、当該状態は他のソフトウェアによる可視的な効果を有しない。C3状態は、C1及びC2状態に対して電力セービングを向上させる。C3状態では、バスクロックとPLLとがゲート処理される。ウェークアップ時間は、現在は50μsのオーダである。当該状態のワーストケースのハードウェア遅延は、ACPIシステムファームウェアを介し提供され、オペレーティングシステムは、当該情報を利用して、C3状態の代わりにC2状態が利用されるべき時点を決定することができる。C3状態では、プロセッサのキャッシュは状態を維持するが、スヌープを無視する。オペレーティングソフトウェアは、キャッシュがコヒーレンシを維持することを保障するためのものである。
Claims (18)
- いくつかの処理ユニットを有する分散計算システムにおいて容易に認識可能な電力管理のための方法であって、
a)電力指標義務の精度を向上させるため、異なる機構からプロセスレベル情報を収集するステップと、
b)環境指標を収集するステップと、
c)前記プロセスレベル情報と前記環境指標とに基づき動作モデルを生成するステップと、
d)前記動作モデルをアプリケーション、利用及び環境コンテクストに適用することに基づき、前記処理ユニットの少なくとも1つの状態を設定するステップと、
を有する方法。 - 前記処理ユニットは、複数の中央処理ユニット、前記中央処理ユニット内の複数の機能ユニット、及びバーチャルマシーンを管理する複数のハイパバイザの少なくとも1つを含む、請求項1記載の方法。
- 前記状態は、複数のパフォーマンス状態の1つである、請求項2記載の方法。
- 複数のパフォーマンス状態の1つの設定は、処理ユニットの周波数を変更することを含む、請求項3記載の方法。
- 複数のパフォーマンス状態の1つの設定は、処理ユニットの電圧を変更することを含む、請求項3記載の方法。
- 複数のパフォーマンス状態の1つの設定は、処理ユニットの周波数と電圧とを変更することを含む、請求項3記載の方法。
- 複数のパフォーマンス状態の1つは、第1パフォーマンス状態と第2パフォーマンス状態とを少なくとも含み、
前記第1パフォーマンス状態は、前記第2パフォーマンス状態より大きな計算ロードをもたらしうる、請求項2記載の方法。 - 前記状態は、複数のスリープ状態の1つである、請求項1記載の方法。
- 複数のスリープ状態の1つは、第1スリープ状態と第2スリープ状態とを少なくとも含み、
前記第1スリープ状態は、前記第2スリープ状態より少ないウェークアップ時間を有する、請求項8記載の方法。 - いくつかの処理ユニットを有する分散計算システムにおいて容易に認識可能な電力管理のための方法であって、
a)電力指標義務の精度を向上させるため、異なる機構からプロセスレベル情報を収集するステップと、
b)環境指標を収集するステップと、
c)前記プロセスレベル情報と前記環境指標とに基づき動作モデルを生成するステップと、
d)前記動作モデルをアプリケーション、利用及び環境コンテクストに適用することに基づき、前記処理ユニットの少なくとも1つの状態を選択するステップと、
e)前記動作モデルをアプリケーション、利用及び環境コンテクストに適用することに基づき、前記処理ユニットの少なくとも1つの状態を設定するために、前記処理ユニットの少なくとも1つにおいて実行されるオペレーティングシステムにソフトウェアコールを発行するステップと、
を有する方法。 - 前記処理ユニットは、複数の中央処理ユニット、前記中央処理ユニット内の複数の機能ユニット、及びバーチャルマシーンを管理する複数のハイパバイザの少なくとも1つを含む、請求項10記載の方法。
- 前記状態は、複数のパフォーマンス状態の1つである、請求項11記載の方法。
- 複数のパフォーマンス状態の1つの設定は、処理ユニットの周波数を変更することを含む、請求項12記載の方法。
- 複数のパフォーマンス状態の1つの設定は、処理ユニットの電圧を変更することを含む、請求項12記載の方法。
- 複数のパフォーマンス状態の1つの設定は、処理ユニットの周波数と電圧とを変更することを含む、請求項12記載の方法。
- 複数のパフォーマンス状態の1つは、第1パフォーマンス状態と第2パフォーマンス状態とを少なくとも含み、
前記第1パフォーマンス状態は、前記第2パフォーマンス状態より大きな計算ロードをもたらしうる、請求項12記載の方法。 - 前記状態は、複数のスリープ状態の1つである、請求項11記載の方法。
- 複数のスリープ状態の1つは、第1スリープ状態と第2スリープ状態とを少なくとも含み、
前記第1スリープ状態は、前記第2スリープ状態より少ないウェークアップ時間を有する、請求項17記載の方法。
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US10717208P | 2008-10-21 | 2008-10-21 | |
US61/107,172 | 2008-10-21 | ||
PCT/US2009/061521 WO2010048316A1 (en) | 2008-10-21 | 2009-10-21 | Methods of achieving cognizant power management |
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US (3) | US8429431B2 (ja) |
EP (1) | EP2350770A4 (ja) |
JP (1) | JP2012506597A (ja) |
CN (1) | CN102227693A (ja) |
AU (1) | AU2009308467A1 (ja) |
CA (1) | CA2741088C (ja) |
WO (1) | WO2010048316A1 (ja) |
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WO2007024403A2 (en) * | 2005-08-25 | 2007-03-01 | Apple Computer, Inc. | Methods and apparatus for dynamic thermal control |
WO2007072458A2 (en) * | 2005-12-23 | 2007-06-28 | Nxp B.V. | Performance analysis based system level power management |
Cited By (2)
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JP2016514301A (ja) * | 2013-02-22 | 2016-05-19 | クアルコム,インコーポレイテッド | ポータブルコンピューティングデバイスにおける電圧モードの温度駆動型選択のためのシステムおよび方法 |
KR101828443B1 (ko) | 2014-01-28 | 2018-02-13 | 한국전자통신연구원 | 사용자 친화적인 기기별 전력/에너지 측정을 위한 장치 및 그 운용 방법 |
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US20100235654A1 (en) | 2010-09-16 |
AU2009308467A1 (en) | 2010-04-29 |
EP2350770A4 (en) | 2012-09-05 |
EP2350770A1 (en) | 2011-08-03 |
CA2741088C (en) | 2017-07-11 |
US20130191658A1 (en) | 2013-07-25 |
CN102227693A (zh) | 2011-10-26 |
US10289184B2 (en) | 2019-05-14 |
US8429431B2 (en) | 2013-04-23 |
US20160252946A1 (en) | 2016-09-01 |
CA2741088A1 (en) | 2010-04-29 |
WO2010048316A1 (en) | 2010-04-29 |
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