EP1504326A2 - Verfahren zum gesteuerten abschalten von datenverarbeitungseinheiten - Google Patents
Verfahren zum gesteuerten abschalten von datenverarbeitungseinheitenInfo
- Publication number
- EP1504326A2 EP1504326A2 EP03732230A EP03732230A EP1504326A2 EP 1504326 A2 EP1504326 A2 EP 1504326A2 EP 03732230 A EP03732230 A EP 03732230A EP 03732230 A EP03732230 A EP 03732230A EP 1504326 A2 EP1504326 A2 EP 1504326A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- processor
- functional units
- register
- signal processing
- state
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; 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
- G06F1/3237—Power saving characterised by the action undertaken by disabling clock generation or distribution
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; 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 OR CALCULATING; 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
- G06F1/329—Power saving characterised by the action undertaken by task scheduling
-
- 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
Definitions
- the invention relates to a method for the functional control of the program and / or data flow in digital signal processors and processors, each with separate and separate modules for program and data flow control.
- DSP fast digital signal processors
- high energy consumption occurs in certain modules of the processor during signal processing.
- the clock rate for reducing the energy consumption of the entire processor is primarily adapted to the tasks of signal processing (speed step mode). This means that the clock rate is gradually reduced when the processor is in standby or has a low load. An opposite sequence of steps is initiated in the event of continued performance requirements for the signal processing up to the highest possible clock rate.
- a further disadvantage of the known methods for energy saving is that an algorithm-related shutdown of functional units is not possible, so that additional energy-saving effects cannot be exploited by temporarily switching off energy-intensive modules while certain algorithms are running in the various functional units.
- the object of the invention is to expand the functioning of the processor in such a way that units of the processor with little or no time delays in their energy consumption are adapted to the current requirements of signal processing and that additional energy saving potentials in the processor are tapped by algorithm-related switching off of functional units.
- the task according to the invention is achieved in that the clock supply for functional units is switched off by a hardware-related signal input from outside into the processor or by a software-related status output from the program flow of the processor in the time in which functional units are not used.
- An advantageous embodiment of the method according to the invention consists in that a signal shutdown on an external connection or on a register of the processor causes the processor to be completely switched off in a "global stop" state.
- the clock supply is switched off by a first and / or second gated clock cell directly at the clock supply gate of the respective functional unit of the processor and the processor assumes a "global DSP-HALT" state in which the processing unit including the interrupt in all functional units and the data and program memory no signal processing is carried out.
- the "Global DSP STOP" status can only be resolved by canceling the triggering signal assignment on the external connection or on the register of the processor.
- a special variant of the advantageous embodiment of the method according to the invention consists in that, in a triggered "global halt" state of the processor, in addition to the data and / or program memory, the processor undergoes a complete shutdown.
- the aim of this solution is that, when the program memory is active, the program memory can be reloaded during the "global half" state of the processor and booting is possible.
- the data memory is active during the "Global Half” state of the processor, it can be read out, for example for test purposes.
- Another variant of the method is that a "software-related stop” status is triggered by the PCU (program control unit) when a stop command occurs on the program side.
- the PCU which recognizes a halt command in the program sequence, decodes it and thereby subsequently the clock supply by means of a first and / or second gated clock cell, which represent the clock supply gates of the respective DP (data path) and also a further processing unit , turns off.
- the aim of this solution is that the energy consumption is precisely adapted to the signal processing tasks in the processor.
- energy-efficient adaptation to short-term changes in the signal processing requirement takes place.
- a special embodiment of the solution of the task according to the invention is that during processing of the command to set up a new VLIW (Very Long Instruction Word) (ie this command is "in the pipeline"), signal processing on the functional units is prevented.
- the VLIW unit transmits the command setup period of several cycles to the PCU via a special connection.
- the PCU thereby triggers a "pipeline stop” state, which switches off the clock supply for the input and output registers of the respective DP and also of all functional units that are not involved in the construction of the VL W.
- This state is not influenced by any software commands.
- a special variant for the solution of the task according to the invention relates to processors whose processor architecture has a slice structure.
- data paths are combined into slices, with a signal processing process being processed in a first slice with a respectively assigned bit width, regardless of the parallel signal processing process, in a second slice.
- the slices are individually controlled by the SSM register bank which implements the commands of the PCU controlling each slice by means of an assigned bit of the SSM register bank.
- the clock supply to the registers of the DP is switched on and off via the respective gated clock cell. This is done in such a way that each individual slice with its input register and / or accumulator and pipeline control register, depending on the signal processing involved, is temporarily stopped in its function by the SSM register and then released again.
- the register file unit (RFU) and the memory access register of the processor always remain in operation and the SSM register bank can be written to by the PCU at any time.
- the aim of this special solution is that the individual calculations are carried out in parallel in the slices in accordance with the SIMD command type, but that the calculation processes and their results are controlled by setting the SSM register bank and the results are thus made available at different times in the accumulators or result registers become.
- Halt "state is assumed that the data to be calculated by the RFU 18 at the respective inputs of the data path 14 and at the inputs of the further processing unit 9.
- This signal assignment interrupts the clock supply for the respective data path DP 4 and the further processing unit 9 of the processor 1. After the global stop signal has been withdrawn, the clock supply in the functional units is continued immediately.
- the PCU 6 analyzes the incoming commands and recognizes a stop command. In this way, it drives a program stop line 16, which is connected to the first and second gated clock cell 3; 4 is connected.
- the signal processing in the respective data path DP 14 to be controlled and the further functional unit 9 is thus controlled by software, the hardware configuration being used to implement the selection of the specific functional units whose signal processing can be switched by software commands. At the same time, it is ensured that the memory interface for signal processing with other functional units and external devices of processor 1 remains in operation regardless of the software-related control.
- the VLIW unit 2 of the PCU 6 communicated the period for the prevention of signal processing.
- the results in the slices are provided in the respectively associated accumulator 8 at different times.
- One bit of the SSM register bank 13, which is connected to the data path 14 of the first or second slice 19; 20 is assigned.
- the signal assignment of this bit is sent to the data path 14 of the first or second slice 19; 20 associated first and / or second gated clock cell 3; 4 fed and controls the signal processing in data path 14 individually, in the event of the present result in this data path 14, the clock supply at the associated input register and thus also the signal processing are prevented.
- the assigned bit of the SSM register bank 13 is reset and all data paths of the slices begin the next signal processing by reading in the data provided by the RFU 18 at their input registers.
- VLIW unit very long instruction word
- first gated clock cell second gated clock cell
- AGU address generating unit
- PCU processing controlling unit
- clock supply line accumulator further processing unit (with gated clock Cell) 0
- Register of the further processing unit 1 external global stop signal input 2
- SIMD command bus 3 SSM register bank (single slice mode) 4 data path 5 global stop line 6 program stop line 7
- RFU register file unit 9 first slice 0 second slice
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Power Sources (AREA)
- Microcomputers (AREA)
- Executing Machine-Instructions (AREA)
- Advance Control (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10221529A DE10221529A1 (de) | 2002-05-14 | 2002-05-14 | Verfahren zum gesteuerten Abschalten von Datenverarbeitungseinheiten |
| DE10221529 | 2002-05-14 | ||
| PCT/DE2003/001539 WO2003096586A2 (de) | 2002-05-14 | 2003-05-13 | Verfahren zum gesteuerten abschalten von datenverarbeitungseinheiten |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1504326A2 true EP1504326A2 (de) | 2005-02-09 |
Family
ID=29413829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03732230A Ceased EP1504326A2 (de) | 2002-05-14 | 2003-05-13 | Verfahren zum gesteuerten abschalten von datenverarbeitungseinheiten |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US7685439B2 (de) |
| EP (1) | EP1504326A2 (de) |
| JP (1) | JP4174472B2 (de) |
| CN (1) | CN100373295C (de) |
| AU (1) | AU2003239760A1 (de) |
| DE (1) | DE10221529A1 (de) |
| WO (1) | WO2003096586A2 (de) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7395419B1 (en) * | 2004-04-23 | 2008-07-01 | Apple Inc. | Macroscalar processor architecture |
| US7617496B2 (en) | 2004-04-23 | 2009-11-10 | Apple Inc. | Macroscalar processor architecture |
| US7937606B1 (en) | 2006-05-18 | 2011-05-03 | Nvidia Corporation | Shadow unit for shadowing circuit status |
| JP4757836B2 (ja) * | 2007-05-11 | 2011-08-24 | パナソニック株式会社 | データ処理装置 |
| US8316252B2 (en) * | 2008-05-30 | 2012-11-20 | Advanced Micro Devices, Inc. | Distributed clock gating with centralized state machine control |
| CN101841646B (zh) * | 2009-03-18 | 2012-10-17 | 原相科技股份有限公司 | 图像感测装置及图像感测方法 |
| JP5578811B2 (ja) * | 2009-06-30 | 2014-08-27 | キヤノン株式会社 | 情報処理装置、情報処理装置の制御方法及びプログラム |
| JP5874399B2 (ja) * | 2012-01-05 | 2016-03-02 | 株式会社リコー | 処理装置 |
| US9384055B2 (en) * | 2012-04-16 | 2016-07-05 | International Business Machines Corporation | Programmatic load-based management of processor population |
| US9274591B2 (en) * | 2013-07-22 | 2016-03-01 | Globalfoundries Inc. | General purpose processing unit with low power digital signal processing (DSP) mode |
| US10447461B2 (en) * | 2015-12-01 | 2019-10-15 | Infineon Technologies Austria Ag | Accessing data via different clocks |
| EP3410243B1 (de) * | 2016-01-28 | 2020-10-14 | Fuji Corporation | Energieverwaltungssystem für eine produktionslinie |
| CN105929928B (zh) * | 2016-04-25 | 2018-11-27 | 天津大学 | 一种指令级并行处理器低功耗设计优化方法 |
| CN111124496B (zh) * | 2019-12-25 | 2022-06-21 | 合肥中感微电子有限公司 | 一种多周期指令处理方法、处理器和电子设备 |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5271950A (en) | 1975-12-11 | 1977-06-15 | Nec Corp | Clock control system |
| JP2762670B2 (ja) | 1990-03-30 | 1998-06-04 | 松下電器産業株式会社 | データ処理装置 |
| JP3529805B2 (ja) | 1992-03-27 | 2004-05-24 | ナショナル・セミコンダクター・コーポレイション | ハードウェア制御パワー管理機能と選択可能な入出力制御ピンとを有するマイクロプロセッサ |
| US5473767A (en) * | 1992-11-03 | 1995-12-05 | Intel Corporation | Method and apparatus for asynchronously stopping the clock in a processor |
| US5918061A (en) * | 1993-12-29 | 1999-06-29 | Intel Corporation | Enhanced power managing unit (PMU) in a multiprocessor chip |
| EP0809825A1 (de) * | 1995-02-14 | 1997-12-03 | Vlsi Technology, Inc. | Verfahren und vorrichtung zur reduzierung des leistungsverbrauches in digitalen elektronischen schaltungen |
| JPH08234861A (ja) | 1995-02-28 | 1996-09-13 | Fujitsu Ltd | 低消費電力プロセッサ |
| US5719800A (en) * | 1995-06-30 | 1998-02-17 | Intel Corporation | Performance throttling to reduce IC power consumption |
| JPH09200026A (ja) | 1996-01-22 | 1997-07-31 | Oki Electric Ind Co Ltd | Lsi論理回路 |
| US6564328B1 (en) * | 1999-12-23 | 2003-05-13 | Intel Corporation | Microprocessor with digital power throttle |
| EP1117031B1 (de) * | 2000-01-14 | 2007-07-11 | Texas Instruments France | Mikroprozessor mit ermässigtem Stromverbrauch |
| US6845445B2 (en) * | 2000-05-12 | 2005-01-18 | Pts Corporation | Methods and apparatus for power control in a scalable array of processor elements |
| US6895520B1 (en) * | 2001-03-02 | 2005-05-17 | Advanced Micro Devices, Inc. | Performance and power optimization via block oriented performance measurement and control |
| US7051221B2 (en) * | 2003-04-28 | 2006-05-23 | International Business Machines Corporation | Performance throttling for temperature reduction in a microprocessor |
-
2002
- 2002-05-14 DE DE10221529A patent/DE10221529A1/de not_active Ceased
-
2003
- 2003-05-13 US US10/514,850 patent/US7685439B2/en not_active Expired - Lifetime
- 2003-05-13 WO PCT/DE2003/001539 patent/WO2003096586A2/de not_active Ceased
- 2003-05-13 EP EP03732230A patent/EP1504326A2/de not_active Ceased
- 2003-05-13 JP JP2004504428A patent/JP4174472B2/ja not_active Expired - Fee Related
- 2003-05-13 AU AU2003239760A patent/AU2003239760A1/en not_active Abandoned
- 2003-05-13 CN CNB038110385A patent/CN100373295C/zh not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO03096586A2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2003096586A3 (de) | 2004-07-01 |
| AU2003239760A8 (en) | 2003-11-11 |
| US7685439B2 (en) | 2010-03-23 |
| US20060156062A1 (en) | 2006-07-13 |
| AU2003239760A1 (en) | 2003-11-11 |
| WO2003096586A2 (de) | 2003-11-20 |
| DE10221529A1 (de) | 2003-12-04 |
| CN100373295C (zh) | 2008-03-05 |
| JP4174472B2 (ja) | 2008-10-29 |
| JP2005525648A (ja) | 2005-08-25 |
| CN1653407A (zh) | 2005-08-10 |
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| DAX | Request for extension of the european patent (deleted) | ||
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| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
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