Libtorque

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continuation-based unix i/o for manycore numa|888|© nick black 2009

My project for Professor Rich Vuduc's Fall 2009 CSE6230, libtorque is a multithreaded event library for UNIX targeted towards manycore NUMA machines. Previous, non-threaded event libraries include libevent, libev and liboop. My project proposal explains motivation for libtorque: it is necessary to take scheduling and memory-placement decisions into account to most optimally handle events, especially on manycore machines and especially to handle unexpected traffic sets (denial of service attacks, oversubscribed pipes, mixed-latency connections, etc).

Resources

• git hosting from GitHub:
  • Available from the dankamongmen/libtorque project page
  • git clone from git://github.com/dankamongmen/libtorque.git
• bugzilla, hosted here on http://dank.qemfd.net/bugzilla/

Milestones

• 2009-11-19: CSE 6230 checkpoint
• 2009-12-10: CSE 6230 due date

References/Prior Art

• Philip Mucci's "Linux Multicore Performance Analysis and Optimization in a Nutshell", delivered at NOTUR 2009
• Elmeleegy et al's "Lazy Asynchronous I/O", USENIX 2004
• PGAS: Kathy Yelick's "Performance and Productivity Opportunities using Global Address Space Programming Models", 2006
• Emery Berger's Hoard allocator.