Mechanism of supporting sub-communicator collectives with O(64) counters as opposed to one counter for each sub-communicator
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.
- Research Organization:
- International Business Machines Corp., Armonk, NY (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- B554331
- Assignee:
- International Business Machines Corporation (Armonk, NY)
- Patent Number(s):
- 8,527,740
- Application Number:
- 12/697,164
- OSTI ID:
- 1092901
- Country of Publication:
- United States
- Language:
- English
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Mechanism of supporting sub-communicator collectives with o(64) counters as opposed to one counter for each sub-communicator
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