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Charm++ Parallel Programming Language Cools HPC Power Problems

The Charm++ parallel programming model supports load balancing between cores while adjusting the frequencies of the cores during high temperature processes. Researchers at the University of Illinois at Urbana-Champaign’s Parallel Programming Laboratory have improved their Charm++ parallel programming model and runtime’s load balancing system to adjust the balancing based on …

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How to Create Vectorized, Multicore Loops in OpenMP with Ease

OpenMP includes pragma directives that let you create both vectorized and multicore loops, and even use both in a single loop. Jeff Cogswell walks you through how to do it. Regular readers of Go Parallel know that we focus on two main areas of parallel programming: Multicore programming and SIMD …

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Use GNU C++ and Intel Compilers with OpenMP

Most compilers today support OpenMP. Jeff Cogswell shows you how to compile OpenMP programs using both the Intel and GNU C++ compilers.

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Stop Threads from Clashing Over Variables in OpenMP

OpenMP lets you allocate blocks of code that will be duplicated across threads. These can be in the form of loops or just simple blocks. To help you with your data, variables can be duplicated within each thread. Jeff Cogswell shows you how. Last time we explored a bit of …

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Taking OpenMP Out for a Spin

OpenMP provides a way to write parallel code using pragmas embedded in your C++ code. Jeff Cogswell tries out a simple pragma that results in spawning multiple, identical parallel threads. In my last blog, I briefly introduced OpenMP, which is a technology whereby you can write parallel code in ways …

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Determine Processor SIMD Features at Runtime

The Intel compiler can generate code that behaves differently for different processors. Sometimes you might want to manually check the processor features. Or you might just want to know how the generated code does it. In this video, Jeff Cogswell shows you how to use the CPUID assembly instruction to …

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Timing Matters in Threading Building Blocks

When you want to time how long a set of parallel tasks takes to complete, you want to use the actual time, not the CPU time. And you want the time-measuring mechanism to be thread-safe. Jeff Cogswell shows you how to use the timing classes in Threading Building Blocks to …

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Configuring Microsoft Visual Studio for OpenMP

  In this video, Jeff Cogswell shows you how to configure a project in Microsoft’s Visual Studio using Parallel Studio and OpenMP. He then takes you through a quick OpenMP program, demonstrating the pragmas  

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Exploring Microsoft’s C# with Parallel Studio

When most people think of programming with Parallel Studio, they think of C++. But there’s actually a good bit of support for other languages, including Microsoft’s C#. Jeff Cogswell explores what’s available for C# programmers in Parallel Studio.  When I first started working with Intel Parallel Studio a few years …

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OpenMP: Parallel Programming Alternative

Although we’ve spent a lot of time here at Go Parallel on Cilk Plus, there’s another technology you can use with Parallel Studio called OpenMP. Jeff Cogswell gives you an overview. Here at Go Parallel, we’ve spent a lot of time talking about Cilk Plus, which is a set of …

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