JP5154682B2 - マルチコアプロセッサにおける電力管理調整 - Google Patents
マルチコアプロセッサにおける電力管理調整 Download PDFInfo
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- JP5154682B2 JP5154682B2 JP2011202792A JP2011202792A JP5154682B2 JP 5154682 B2 JP5154682 B2 JP 5154682B2 JP 2011202792 A JP2011202792 A JP 2011202792A JP 2011202792 A JP2011202792 A JP 2011202792A JP 5154682 B2 JP5154682 B2 JP 5154682B2
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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
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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
- G06F1/324—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
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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
12,14 コア
16 調整ロジック
Claims (19)
- 各コアが対応する独立リソース設定を有し、第1コアと第2コアとを含む複数のコアにより共有される共有リソースに対して、互いに異なる対応する第1動作要求と第2動作要求とを含む複数の対応する整合しない動作要求を提供する複数のコアと、
前記複数のコアに接続され、前記複数の整合しない動作要求と、電力セービングポリシーと高パフォーマンスポリシーとの何れが制御するのに最も重要であるものとして特定されているかとに基づき、前記複数のコアにより共有される共有リソースに対する共有リソース設定を調整する調整ロジックと、
を有するプロセッサであって、
前記調整ロジックは、
電力状態遷移テーブルに基づき前記第1動作要求を第1目標値に変換し、
前記電力状態遷移テーブルに基づき前記第2動作要求を第2目標値に変換し、
前記第1目標値と前記第2目標値とを比較することによって前記第1動作要求と前記第2動作要求とを比較し、
前記第2目標値が前記第1目標値より大きい場合、前記第2目標値を前記共有リソース設定として選択する、
ことによって、前記複数の整合しない動作要求に基づき前記共有リソース設定を調整するプロセッサ。 - 前記共有リソース設定は、前記複数のコアにより共有されるバス周波数設定と電圧設定とを有し、
前記独立リソース設定は、独立クロックスロットル設定とアーキテクチャスロットル設定とを有する、請求項1記載のプロセッサ。 - 前記第1コアは、前記第1動作要求が充足されることを可能にする前記第1コアの対応する独立リソース設定に対する調整値を選択する、
請求項2記載のプロセッサ。 - 前記調整ロジックは、前記共有リソース設定から得られる訂正された動作要求を前記第1コアに通知するよう動作可能であり、
前記第1コアは、前記訂正された動作要求に基づき前記調整値を選択する、請求項3記載のプロセッサ。 - 前記第2コアは、より小さな第2目標値に対応する変更された動作要求を提供し、
前記調整ロジックは、前記変更された動作要求に基づき前記共有リソース設定を調整し、
前記第1コアは、前記調整された共有リソース設定に基づき、前記第1コアの独立リソース設定を調整し、
前記共有リソース設定は、前記複数のコアにより共有されるバス周波数設定と電圧設定とを有し、
前記独立リソース設定は、独立クロックスロットル設定とアーキテクチャスロットル設定とを有する、
請求項1記載のプロセッサ。 - 前記独立リソース設定は、独立クロックスロットル設定とアーキテクチャスロットル設定とを含むセットから選択される設定を有する、請求項1記載のプロセッサ。
- 前記共有リソース設定は、電圧設定と周波数設定とを含むセットから選択される設定を有する、請求項1記載のプロセッサ。
- 前記複数の動作要求は、複数の電力要求を有する、請求項1記載のプロセッサ。
- 前記複数の動作要求は、複数のパフォーマンス要求を有する、請求項1記載のプロセッサ。
- 各コアが対応する独立リソース設定を有し、第1コアと第2コアとを含む複数のコアにより共有される共有リソースに対して、互いに異なる対応する第1動作要求と第2動作要求とを含む複数の対応する整合しない動作要求を提供するステップと、
前記複数の整合しない動作要求と、電力セービングポリシーと高パフォーマンスポリシーとの何れが制御するのに最も重要であるものとして特定されているかとに基づき、前記複数のコアにより共有される共有リソースの共有リソース設定を調整するステップと、
を有する方法であって、
前記共有リソース設定を調整するステップは、
電力状態遷移テーブルに基づき前記第1動作要求を第1目標値に変換し、
前記電力状態遷移テーブルに基づき前記第2動作要求を第2目標値に変換し、
前記第1目標値と前記第2目標値とを比較することによって前記第1動作要求と前記第2動作要求とを比較し、
前記第2目標値が前記第1目標値より大きい場合、前記第2目標値を前記共有リソース設定として選択する、
ことを有する方法。 - 前記共有リソース設定は、前記複数のコアにより共有されるバス周波数設定と電圧設定とを有し、
前記独立リソース設定は、独立クロックスロットル設定とアーキテクチャスロットル設定とを有する、請求項10記載の方法。 - 前記共有リソース設定から得られる訂正された動作要求を前記第1コアに通知するステップと、
前記訂正された動作要求に基づき前記調整値を選択するステップと、
をさらに有する、請求項10記載の方法。 - 前記独立リソース設定により前記共有リソース設定を調整するステップは、独立クロックスロットル設定とアーキテクチャスロットル設定とを含むセットから選択される設定により前記共有リソース設定を調整する、請求項11記載の方法。
- 前記調整するステップは、電圧設定と周波数設定とを含むセットから選択される設定により調整する、請求項10記載の方法。
- 共有周波数設定を有するクロックソースと、
前記クロックソースに接続される請求項1乃至9何れか一項記載のプロセッサと、
を有する計算システム。 - 第1プロセッサコアから第1動作要求を通知するステップと、
第2プロセッサコアから第2動作要求を通知するステップと、
前記第1動作要求を第1目標値に変換するステップと、
前記第2動作要求を第2目標値に変換するステップと、
前記第1動作要求と前記第2動作要求とを比較するステップと、
前記第2動作要求が前記第1動作要求より大きい場合、前記第2目標値を共有リソース設定として選択するステップと、
前記第1動作要求が充足されることを可能にする独立リソース設定に対して調整値を選択するステップと、
前記第2プロセッサコアから変更された動作要求を通知するステップと、
前記変更された動作要求に基づき前記共有リソース設定を調整するステップと、
前記調整された共有リソース設定に基づき前記独立リソース設定を調整するステップと、
を有する方法。 - 前記共有リソース設定は、電圧設定と周波数設定とを含むセットから選択される設定を含む、請求項16記載の方法。
- 前記独立リソース設定は、独立クロックスロットル設定とアーキテクチャスロットル設定とを含むセットから選択される設定を含む、請求項16記載の方法。
- 前記第1動作要求と前記第2動作要求とは、合成された最適状態絶対電力、電力パーセンテージ、パフォーマンスインデックス及び/又は合成された最適状態絶対パフォーマンスの少なくも1つである、請求項16記載の方法。
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US10/899,674 US7966511B2 (en) | 2004-07-27 | 2004-07-27 | Power management coordination in multi-core processors |
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CN (1) | CN1993669B (ja) |
DE (1) | DE112005001779B4 (ja) |
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WO (1) | WO2006019973A1 (ja) |
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