Energieeffizienz
Intel® System Studio - Multicore Programming with Intel® Cilk™ Plus
Intel System Studio not only provides a variety of signal processing primitives via Intel® Integrated Performance Primitives (Intel® IPP), and Intel® Math Kernel Library (Intel® MKL), but also allows developing high-performance low-latency custom code (Intel C++ Compiler with Intel Cilk Plus). Since Intel Cilk Plus is built into the compiler, it can be used where it demands an efficient threading runtime in order to extract parallelism. Therefore it's possible to effectively introduce multicore parallelism even without introducing it into each of the important algorithms e.g., by employing a parallel pattern called pipeline. For custom code (e.g., code that's not reused via a library), one can rely (in addition to auto-vectorization) on an extended Array Notation incl. elemental functions (kernels) to explicitly vectorize at a higher level compared to ISA-specific intrinsic functions.
Troubleshooting VTune(TM) Amplifier XE's Power Analysis
We have recently learned about various problems users are experiencing when attempting to use the power analysis capability of the VTune™ Amplifier XE 2013. For example, you may see one of the following messages:
- Error: Power Analysis is not supported on this platform.
- Unknown symbol "cpufreq_freq_attr_scaling_available_freqs" in /var/log after building and attempting to load the power driver module
Below are some suggestions for troubleshooting problems with the power analysis feature.
Intel® Advisor XE Helps You Understand Parallel Efficiency
Today, tuning software isn’t just about making an application run faster, it is also about making sure it is running efficiently.
Desarrollo de aplicaciones de bajo consumo para dispositivos Ultrabook™
El rendimiento de bajo consumo es un componente clave en los dispositivos Ultrabook™ y en los dispositivos móviles en general. Mientras que la nueva generación de dispositivos Ultrabook™ vienen con funciones de hardware incorporadas que mejoran el rendimiento, el consumo de energía no pertenece al dominio del hardware solamente. El software cumple una función importante para que los dispositivos UltrabookTM hagan un uso de energía lo más eficiente posible. En esta sección, encontrará recursos que le ayudarán a diseñar y desarrollar un software "ecológico".
Tuning Algorithm Performance and Energy Utilization using the Intel® Power Gadget API on Mac OS X*
Application developers striving to deliver the fastest and most efficient applications have a new tool in their optimization toolkit, the Intel Power Gadget 2.5. The Intel Power Gadget is a software-based estimation tool for applications running on 2nd Generation Intel® Core™ processors. It’s available on the Microsoft Windows* and Mac* OS X operating systems. The Intel Power Gadget is a great tool that provides real-time data on processor frequency and estimated processor package power.
7 новых возможностей Intel® VTune Amplifier XE
VTune Amplifier XE давно известен пользователям своими возможностями глубокого анализа производительности ПО, как на уровне приложения, так и на микроархитектурном уровне.
Инструмент не стоит на месте и активно развивается, улучшаясь и обрастая новым функционалом. В этом посте приведён краткий обзор новых «фич», появившихся как в вышедшем в сентябре VTune Amplifier XE 2013, так и совсем недавно, в последующих обновлениях:
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