We present Chronos, a framework to build accelerators for applications with speculative
parallelism. These applications consist of atomic tasks, sometimes with order constraints …

Multicores are now ubiquitous, but programmers still write sequential code. Speculative
parallelization is an enticing approach to parallelize code while retaining the ease of …

Multicore systems must exploit locality to scale, scheduling tasks to minimize data
movement. While locality-aware parallelism is well studied in non-speculative systems, it …

Multicore systems should support both speculative and non-speculative parallelism.
Speculative parallelism is easy to use and is crucial to scale many challenging applications …

Snapshot Isolation (SI) is an established model in the database community, which permits
write-read conflicts to pass and aborts transactions only on write-write conflicts. With the …

This work studies the interplay between multithreaded cores and speculative parallelism
(eg, transactional memory or thread-level speculation). These techniques are often used …

Effective execution of atomic blocks of instructions (also called transactions) can enhance
the performance and programmability of multiprocessors. Atomic blocks can be demarcated …

Hardware speculative execution schemes such as hardware transactional memory (HTM)
enjoy low run-time overheads but suffer from limited concurrency because they rely on reads …

Hardware Transactional Memory (HTM) offers the opportunity to ease parallel programming.
However, driven by hardware limitations, commercial implementations eschew the …

Transactional memory systems providing snapshot isolation enable concurrent access to
shared data without incurring aborts on read-write conflicts. Reducing aborts is extremely …