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79 results about "Demand load" patented technology

In telecommunication, the term demand load can have the following meanings: In general, the total power required by a facility. The demand load is the sum of the operational load and nonoperational demand loads. It is determined by applying the proper demand factor to each of the connected loads and a diversity factor to the sum total. At a communications center, the power required by all automatic switching, synchronous, and terminal equipment, control and keying equipment, plus lighting, ventilation, and air- conditioning equipment required to maintain full continuity of communications. The power required for ventilating equipment, shop lighting, and other support items that may be operated simultaneously with the technical load. The sum of the technical demand and nontechnical demand loads of an operating facility. At a receiver facility, the power required for all receivers and auxiliary equipment that may be operated on prime or spare antennas simultaneously, those in standby condition, multicouplers, control and keying equipment, plus lighting, ventilation, and air conditioning equipment required for full continuity of communications.

Method and system for clearing dependent speculations from a request queue

A method of operating a multi-level memory hierarchy of a computer system and apparatus embodying the method, wherein instructions issue having an explicit prefetch request directly from an instruction sequence unit to a prefetch unit of the processing unit. The invention applies to values that are either operand data or instructions. These prefetch requests can be demand load requests, where the processing unit will need the operand data or instructions, or speculative load requests, where the processing unit may or may not need the operand data or instructions, but a branch prediction or stream association predicts that they might be needed. Further branch predictions or stream associations that were made based on an earlier speculative choice are linked by using a tag pool which assigns a bit fields in the tag pool entries to the level of speculation depth. Each entry shares in common the bit field values associated with earlier branches or stream associations. When a branch or stream predicted entry is no longer needed, that entry can be cancelled and all entries that were to be loaded dependent on that entry can likewise be cancelled by walking through all entries sharing the bit fields corresponding to the speculation depth of the cancelled entry and tagging those entries as invalid.
Owner:IBM CORP

Method and system for managing speculative requests in a multi-level memory hierarchy

A method of operating a multi-level memory hierarchy of a computer system and apparatus embodying the method, wherein instructions issue having an explicit prefetch request directly from an instruction sequence unit to a prefetch unit of the processing unit. The invention applies to values that are either operand data or instructions and treats instructions in a different manner when they are loaded speculatively. These prefetch requests can be demand load requests, where the processing unit will need the operand data or instructions, or speculative load requests, where the processing unit may or may not need the operand data or instructions, but a branch prediction or stream association predicts that they might be needed. The load requests are sent to the lower level cache when the upper level cache does not contain the value required by the load. If a speculative request is for an instruction which is likewise not present in the lower level cache, that request is ignored, keeping both the lower level and upper level caches free of speculative values that are infrequently used. If the value is present in the lower level cache, it is loaded into the upper level cache. If a speculative request is for operand data, the value is loaded only into the lower level cache if it is not already present, keeping the upper level cache free of speculative operand data.
Owner:IBM CORP

Data streaming mechanism in a microprocessor

This invention provides a dual usage cache reload buffer (CRB) to hold both demand loads as well as prefetch loads. A new form of a data cache block touch (DCBT) instruction specifies which level of the cache hierarchy to prefetch data into. A first asynchronous form of a DCBT instruction is issued to prefetch a stream of data into a L2 cache. A second synchronous form of a DCBT instruction is used to prefetch data from the L2 cache to the CRB in the main CPU, which will bypass the L1 data cache and forward data directly to the register file. This CRB has a dual usage and is used to hold both normal cache reloads as well as the aforementioned prefetched cache lines.
Owner:IBM CORP

Grid-connecting micro-grid double-layer optimization method based on two-stage demand response

The invention relates to a grid-connecting micro-grid double-layer optimization method based on two-stage demand response. A demand response layer guides a user actively track clean energy power generation output in power consumption through one-stage optimization, thereby promoting high-efficiency development and utilization of the clean energy, and increasing ratio of the clean energy in terminal energy consumption. Through demand load adjustment by two-stage optimization, a more stable electric power load operation state is formed and output stability of a controllable micro-source is improved. A micro-grid layer minimizes comprehensive operation cost at the aspect of economic property of the micro-grid based on the method. A reasonable grid connecting micro-grid double-layer optimization model is constructed through sufficiently considering the demand-side response based on time-variable electricity price, and furthermore the model is solved by a heredity algorithm based on simulated annealing, thereby improving convergence speed and precision in model solving.
Owner:SHANGHAI UNIVERSITY OF ELECTRIC POWER

Air conditioner control method and device as well as computer readable storage media

The invention discloses an air conditioner control method. The air conditioner control method comprises the following steps that whether a time interval between a current moment and a preset on-duty moment is less than or equal to a maximum early start time is determined; if the time interval is less than or equal to the maximum early start time, a preliminary demand load corresponding to a central air conditioner is acquired and a startup combined load corresponding to the central air conditioner is acquired; and the starting time of a to-be-started main machine is determined based on the startup combined load and the preliminary demand load; the invention further discloses an air conditioner control device and a computer readable storage media. According to the air conditioner control method and device as well as the computer readable storage media, the starting moment of the main machine in the central air conditioner can be determined according to the preliminary demand load, and then the central air conditioner can be started in advance advantageously in later stage according to the starting moment, so that the comfort degree of a room corresponding to the on-duty moment is guaranteed while energy consumption is reduced, and the pre-cooling or preheating accuracy of the central air conditioner is improved.
Owner:SHANGHAI MEICON INTELLIGENT CONSTR CO LTD +1
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