Invention Grant
US08527740B2 Mechanism of supporting sub-communicator collectives with O(64) counters as opposed to one counter for each sub-communicator
有权
用O(64)计数器支持子通信集体的机制,而不是每个子通信器的一个计数器
- Patent Title: Mechanism of supporting sub-communicator collectives with O(64) counters as opposed to one counter for each sub-communicator
- Patent Title (中): 用O(64)计数器支持子通信集体的机制,而不是每个子通信器的一个计数器
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Application No.: US12697164Application Date: 2010-01-29
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Publication No.: US08527740B2Publication Date: 2013-09-03
- Inventor: Sameer Kumar , Amith R. Mamidala , Joseph D. Ratterman , Michael Blocksome , Douglas Miller
- Applicant: Sameer Kumar , Amith R. Mamidala , Joseph D. Ratterman , Michael Blocksome , Douglas Miller
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Scully, Scott, Murphy & Presser, PC
- Agent Daniel P. Morris, Esq.
- Main IPC: G06F9/30
- IPC: G06F9/30

Abstract:
A system and method for enhancing barrier collective synchronization on a computer system comprises a computer system including a data storage device. The computer system includes a program stored in the data storage device and steps of the program being executed by a processor. The system includes providing a plurality of communicators for storing state information for a bather algorithm. Each communicator designates a master core in a multi-processor environment of the computer system. The system allocates or designates one counter for each of a plurality of threads. The system configures a table with a number of entries equal to the maximum number of threads. The system sets a table entry with an ID associated with a communicator when a process thread initiates a collective. The system determines an allocated or designated counter by searching entries in the table.
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