| ¡¡ | Chinese Journal of Computers Full Text |
| Title | HybridTCache: Tightly Coupled Hybrid Transactional Memory System to Support Efficient Unbounded Transactions with Strong Isolation |
| Authors | WANG Shao-Gang WU Dan PANG Zheng-Bin YANG Xiao-Dong |
| Address | (School of Computer Science, National University of Defense Technology, Changsha 410073) |
| Year | 2008 |
| Issue | No.11(1907¡ª1917) |
| Abstract & Background | Abstract The paper proposes an efficient and unbounded hybrid-mode TM system, called HybridTCache, which maximum system performance by executing transaction completely in hardware in most common cases and triggering operating system (OS) support with low overhead when transaction size exceeds hardware capacity. HybridTCache provides new data version management by buffering transactional data in an independent cache, named TCache, which hides its value from other threads until transaction commits. TCache provides fast bookkeeping compared with traditional software approach, and makes both commit and abort fast. A key design point of hardware TM is to support unbounded transaction. HybridTCache achieves this by introducing TCache overflow exceptions and resorting OS to handle overflowed blocks. Evaluating the splash2 and STMAP benchmark suits shows that HybridTCache has advantages over traditional systems on performance, scalability and design complexity issues. Keywords transactional memory; TCache; HybridTCache; hybrid-mode |