Dr Juan Fumero presented at QCon London on TornadoVM , a plug-in to OpenJDK and GraalVM that runs Java on heterogeneous hardware including Graphical Processing Units (GPUs) and Field Programmable Gate Arrays (FPGAs). Demos during the presentation showed code being speeded up by hundreds of times when running on a GPU vs a CPU.
GPUs and FPGAs can offer 2-3 orders of magnitude speed improvement for highly parallelisable workload. But those speed improvements have been difficult to obtain as programming requires the use of low level languages such as OpenCL and VHDL . TornadoVM makes acceleration accessible to programmers using Java and Node.js, and annotations are used to mark parallelisable code blocks as a hint to the compiler.
TornadoVM supports multi core CPUs, GPUs from Nvidia, AMD and Intel, and Intel FPGAs. The choice of hardware accelerator is passed to TornadoVM as a parameter, and Dr Fumero demonstrated code running on the CPU, embedded Intel GPU, and Nvidia GPU present on his Mac laptop. TornadoVM also offers live task migration between different hardware types, which was also demonstrated. Tensor Processing Units ( TPUs ) aren’t yet supported, but Dr Fumero stated that it would be straightforward to add an additional backend to TornadoVM so long as OpenCL support is present. The TornadoVM team are presently working on adding support for Nvdia’s Parallel Thread Execution ( PTX ).
Dr Fumero and his University of Manchester colleagues don’t yet consider TornadoVM to be production ready, as there’s no organisation to provide support. They do however already have an industry case study of TornadoVM being used by Exus to speed up training for machine learning models working on health care data. Due to limitations in the underlying programming model TornadoVM doesn’t support objects (except for trivial cases), recursion, dynamic memory allocation or exceptions.
The TornadoVM: Java for GPUs and FPGAs presentation is already available to QCon London attendees, and will be opened up to all InfoQ readers in due course. Dr Fumero has published his slides and demos .
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Unix/Linux编程实践教程
Bruce Molay、杨宗源、黄海涛 / 杨宗源、黄海涛 / 清华大学出版社 / 2004-10-1 / 56.00元
操作系统是计算机最重要的系统软件。Unix操作系统历经了几十年,至今仍是主流的操作系统。本书通过解释Unix的工作原理,循序渐进地讲解实现Unix中系统命令的方法,让读者理解并逐步精通Unix系统编程,进而具有编制Unix应用程序的能力。书中采用启发式、举一反三、图示讲解等多种方法讲授,语言生动、结构合理、易于理解。每一章后均附有大量的习题和编程练习,以供参考。 本书适合作为高等院校计算机及......一起来看看 《Unix/Linux编程实践教程》 这本书的介绍吧!