SINGLE-THREADED VS. MULTITHREADED: WHERE SHOULD WE FOCUS?The article reports on the panel discussion on whether to focus on single-threaded or multi-threaded during the 13th Annual IEEE/ACM International Symposium on High-Performance Computer Architecture in February 2007. Joel Emer, Mark D. Hill,...
This topic discusses how to get the maximum performance from the multithreaded libraries.Maximizing performanceThe performance of the multithreaded libraries has been improved and is close to the performance of the now-eliminated single-threaded libraries. For those situations when even higher performance ...
There's a good deal of documentation about thread-safety (correctness), but not much about multithreaded performance. This is a bit different from#149, and I think we should do both. I'd like the page to help the reader develop a basic mental model for how to write programs that will ...
Multiple threads within a single process have considerably less overhead than a corresponding number of processes since they share address space and memory. With that in mind, let’s revisit our test case, but this time using Ruby’sThreadclass: ...
Decompression is also sped up for larger files (many tens of megabytes or more); for smaller files, it's about the same as Java's built-in single-threaded GZipInputStream. Decompression of the aforementioned Wikipedia data was over 3x faster. ...
One of the most effective routes to high threading performance scale factors is to minimize the single thread performance. Also, the better your performance, on a platform with multiple cache, the more important it is to set appropriate affinity (e.g. KMP_AFFINITY=compact for ifort...
It was immediately clear that 80 Geant4-based processes, each with a footprint of more than a gigabyte, would never work, due to the large memory pressure on a single system bus to memory. A potentially sim- ple solution takes advantage of UNIX copy-on-write semantics to enhance the ...
ingsingle-threadperformance. Weevaluateavarietyofheterogeneousarchitecturalde- signs, including processor cores that are themselves mul- tithreaded, an extension to the original architecture pro- posal [14]. Through this evaluation, we make the following ...
In single-threaded applications, we can use compiler-directed data buffering through DMA to optimize the data transfer between SPM and off-chip memory [4,23]. This process requires precise analysis of the access patterns and careful management of the data size. With data buffering, global load/...
programs, thus each thread of a multi-threaded processor appeared to the operating system as a processor. As technology further evolved, it was possible to put multiple processors (each having an IPU) on a single semiconductor chip or die. These processors were referred to processor cores or ...