Operating system support for improving data locality on CC-NUMA compute servers
Proceedings of the seventh international conference on Architectural support for programming languages and operating systems
Pentium 4 Performance-Monitoring Features
IEEE Micro
Evaluation of NUMA Memory Management Through Modeling and Measurements
IEEE Transactions on Parallel and Distributed Systems
Hardware profile-guided automatic page placement for ccNUMA systems
Proceedings of the eleventh ACM SIGPLAN symposium on Principles and practice of parallel programming
Thread clustering: sharing-aware scheduling on SMP-CMP-SMT multiprocessors
Proceedings of the 2nd ACM SIGOPS/EuroSys European Conference on Computer Systems 2007
Professional Linux Kernel Architecture
Professional Linux Kernel Architecture
Enabling high-performance memory migration for multithreaded applications on LINUX
IPDPS '09 Proceedings of the 2009 IEEE International Symposium on Parallel&Distributed Processing
Locating cache performance bottlenecks using data profiling
Proceedings of the 5th European conference on Computer systems
An analysis of Linux scalability to many cores
OSDI'10 Proceedings of the 9th USENIX conference on Operating systems design and implementation
A case for NUMA-aware contention management on multicore systems
USENIXATC'11 Proceedings of the 2011 USENIX conference on USENIX annual technical conference
Traffic management: a holistic approach to memory placement on NUMA systems
Proceedings of the eighteenth international conference on Architectural support for programming languages and operating systems
A data-centric profiler for parallel programs
SC '13 Proceedings of the International Conference on High Performance Computing, Networking, Storage and Analysis
Proceedings of Annual IEEE/ACM International Symposium on Code Generation and Optimization
A tool to analyze the performance of multithreaded programs on NUMA architectures
Proceedings of the 19th ACM SIGPLAN symposium on Principles and practice of parallel programming
| Hi-index | 0.00 |
Modern multicore systems are based on a Non-Uniform Memory Access (NUMA) design. Efficiently exploiting such architectures is notoriously complex for programmers. One of the key concerns is to limit as much as possible the number of remote memory accesses (i.e., main memory accesses performed from a core to a memory bank that is not directly attached to it). However, in many cases, existing profilers do not provide enough information to help programmers achieve this goal. This paper presents MemProf, a profiler that allows programmers to choose and implement efficient application-level optimizations for NUMA systems. MemProf builds temporal flows of interactions between threads and objects, which help programmers understand why and which memory objects are accessed remotely. We evaluate MemProf on Linux using four applications (FaceRec, Streamcluster, Psearchy, and Apache) on three differentmachines. In each case, we show howMemProf helps us choose and implement efficient optimizations, unlike existing profilers. These optimizations provide significant performance gains (up to 161%), while requiring very lightweight modifications (10 lines of code or less).