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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Sanyal, S. Roy, S. Cristal, A. Unsal, O.S. Valero, M. |
| Copyright Year | 2009 |
| Abstract | Transactional Memory (TM) is an emerging technology which promises to make parallel programming easier. However, to be efficient, underlying TM system should protect only true shared data and leave thread-local data out of the transaction. This speed-up the commit phase of the transaction which is a bottleneck for a lazily versioned HTM. This paper proposes a scheme in the context of a lazy-lazy(lazy conflict detection and lazy data versioning) Hardware Transactional Memory (HTM) system to identify dynamically variables which are local to a thread and exclude them from the commitset of the transaction. Our proposal covers sharing of both stack and heap but also filters out local accesses to both of them. We also propose, in the same scheme, to identify local variables for which versioning need not be maintained.For evaluation, we have implemented a lazy-lazy model of HTM in line with the conventional and the scalable version of the TCC in a full system simulator. For operating system, we have modified the Linux kernel. We got an average speed-up of 31% for the conventional TCC, on applications from the STAMP benchmark suite. For the scalable TCC we got an average speedup of 16%. Also, we found that on average 99% of the local variables can be safely omitted when recording their old values to handle aborts. |
| Starting Page | 171 |
| Ending Page | 179 |
| File Size | 592188 |
| Page Count | 9 |
| File Format | |
| ISBN | 9781424446001 |
| DOI | 10.1109/HPCC.2009.84 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2009-06-25 |
| Publisher Place | Korea (South) |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Virtual Memory Management Filtering Proposals Yarn Filters Dynamic Heap Separation Parallel programming Operating systems Linux Translation Lookaside Buffer (TLB) Hardware Transactional Memory Hardware Protection Kernel |
| Content Type | Text |
| Resource Type | Article |
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