Invention Grant
- Patent Title: Recovery in shared memory environment
- Patent Title (中): 在共享内存环境中恢复
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Application No.: US13413758Application Date: 2012-03-07
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Publication No.: US08397032B2Publication Date: 2013-03-12
- Inventor: Elmootazbellah Nabil Elnozahy
- Applicant: Elmootazbellah Nabil Elnozahy
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Garg Law Firm, PLLC
- Agent Rakesh Garg; Eustus Dwayne Nelson
- Main IPC: G06F12/00
- IPC: G06F12/00

Abstract:
A method for recovery in a shared memory environment is provided in the illustrative embodiments. A core in a multi-core processor is designated as a user level core (ULC), which executes an instruction to modify a memory while executing an application. A second core is designated as a operating system core (OSC), which manages checkpointing of several segments of the shared memory. A set of flags is accessible to a memory controller to manage a shared memory. A flag in the set of flags corresponds to one segment in the segments of the shared memory. A message or instruction for modification of a segment is received. A cache line tracking determination is made whether a cache line used for the modification has already been used for a similar modification. If not, a part of the segment is checkpointed. The modification proceeds after checkpointing.
Public/Granted literature
- US20120226870A1 RECOVERY IN SHARED MEMORY ENVIRONMENT Public/Granted day:2012-09-06
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