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Transactional memory system under distributed environment

A distributed environment, transactional memory technology, applied in the field of parallel programming, to achieve the effect of reducing addressing complexity, reducing communication delay, and low communication delay

Inactive Publication Date: 2013-07-24
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The finer granularity is word granularity and byte granularity. Under these two granularities, the detection of conflicts is finer, which is more conducive to the improvement of the performance of the transactional memory system, but it will bring programmers no small trouble

Method used

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  • Transactional memory system under distributed environment
  • Transactional memory system under distributed environment
  • Transactional memory system under distributed environment

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example

[0039] Operation process of the present invention is described in detail below with an example

[0040] Example initial environment: There are three nodes (Node01, Node02, Node03) to form a distributed system; create a shared data Data01 on Node01, create a shared data Data02 on Node03, at this time, the Original Home and Current Home of Data01 are both Node01, while Data02's Original Home and Current Home are both Node03; run transaction Transaction01 on Node01, run transaction Transaction02 on Node02, and run transactions Transaction03 and Transaction04 on Node03, where Transaction01 performs read operations on Data01, and Transaction02 performs write operations on Data01 Operation, Transaction03 executes read operation on Data01, executes write operation on Data02, and Transaction04 executes write operation on Data02. The following executes these three transactions in one of many execution sequences:

[0041] (1) Transaction01 performs a read operation on Data01. Transact...

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Abstract

The invention belongs to the field of parallel programming, in particular to a transactional memory system under a distributed environment, which comprises a transaction logic module, a transaction management module, a shared data management module and a network communication module. The transaction logic module is responsible for achieving basic functions of a single transaction, the transactionmanagement module is responsible for managing a plurality of transactions existing in the system, the shared data management module is responsible for managing all distributed shared data in the system and transaction operation related to the distributed shared data, and the network communication module is responsible for receiving network communication information in the shared data management module and enabling the information to be transmitted to shared data management module on a goal node. The transactional memory system can control consistency of distributed shared variable under the distributed environment, enables distributed procedures to be capable of visiting the distributed shared variable in a transaction mode, and does not need to use distributed locks to control the consistency of the shared variable.

Description

technical field [0001] The invention belongs to the field of parallel program design, and specifically relates to the construction of a distributed shared memory consistency control mechanism based on transactional memory and the realization of a related system framework. It is suitable for deploying highly scalable transactional memory in large-scale clusters. Provides transaction-based access control for distributed shared memory in a cluster. Background technique [0002] Transactional Memory (Transactional Memory) is a tool for parallel programming. It is an access control mechanism for shared memory that is different from locks or semaphores. It comes from the transaction in the database management system (DBMS). concept. [0003] In parallel programming, when multiple computing tasks cooperate in parallel, the synchronization and consistency of shared data between tasks must be considered. The most preliminary and common method is to use locks. Only the tasks that hav...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F9/46G06F9/38
Inventor 金海喻之斌彭鑫曾敬翔范学鹏
Owner HUAZHONG UNIV OF SCI & TECH
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