Tongping Liu

I am a second year graduate student in the Department of Computer Science at the University of Massachusetts, Amherst. Before that, I have worked for a couple of years at some companies in Shanghai after I got my master degree from Huazhong Univ. of Science and Technology and my bachelor degree from Harbin Institute of Technology . Now I am advised by Prof. Emery Berger and I am a member of PLASMA group.

Redline:

Redline is a system that provides support for interactive applications in commodity operating systems. Redline works with unaltered applications and uses standard APIs. It uses lightweight specifications to orchestrate resource management of CPU scheduler, memory manager and IO scheduler. Now part of results have been published in OSDI2008. More information about this project can be seen in Redline;

Grace:

Grace is a runtime system for multithreaded programs written in C/C++ that provides good scalability and performance while eliminating a range of concurrency errors. To exploit available computing resources (multiple CPUs or cores), Grace employs a combination of speculative thread execution, supported by a novel virtual-memory based software transactional memory system, together with a commit protocol that ensures sequential semantics. Now corresponding paper has been accepted by OOPSLA 2009.

Reduce memory fragmentation:

In this project, we are trying to reduce the memory fragmentation in Linux operating system. One method combining with "memory allocation according to usage" and "page migration" has been proved by us to greatly reduce the memory fragmentation.