I have code that is structured like this:
Reference number: DPD200253488
Products: Intel® C++ Composer XE, Intel® Integrated Performance Primitives for Linux*
Version: 2013 SP1 Update 2 (compiler 14.0), IPP 8.1 (Initial Release)
Operating Systems: Linux* / IA-32, Intel® 64
A defect exists in the Intel® Integrated Performance Primitives (IPP) 8.1 Initial release in the ippvars.csh file distributed for Linux* (found under: /opt/intel/composer_xe_2013_sp1/ipp).
I'm having difficulty running a simple test case using cilk_spawn. I'm compiling under gcc 4.9.0 20130520.
The following fib2010.cpp example, executes in 0.028s without cilk and takes 0.376s with cilk as long as I set the number of workers to 1. If I change the number of workers to any number greater than one, I get a segmentation fault.
I'm having difficulty comparing cilk_for with cilk_spawn. The following cilk_spawn code executes as I expect for command line arguments like 1000000 30
Intel® C++ Composer XE 2013 SP1 Update 2 includes the latest Intel C/C++ compilers and performance libraries for IA-32 and Intel® 64 architecture systems. This new product release now includes: Intel® C++ Compiler XE Version 14.0.2 Intel® Math Kernel Library (Intel® MKL) Version 11.1 Update 2, Intel® Integrated Performance Primitives (Intel® IPP) Version 8.1, Intel® Threading Building Blocks (Intel® TBB) Version 4.2 Update 3, Intel(R) Debugger Extension 1.0 Update 1 for Intel(R) Many Integrated Core Architecture.
New in this release:
I have the loop, inside its body running the function with array member (dependent on loop index) as an argument, and returning one value. I can parallelized this loop by using cilk_for() operator instead of regular for() - and it is simple and works well. This is explicit parallelization. Instead of explicit loop instruction I can use Array Notation contruction (as shown below) - it is implicit loop. My routine is relatively long and complecs, and has Array Notation constructions inside, so it cannot be declared as a vector (elemental) one.
I want to build the trunk on an embedded system supporting armv7 instructions. The build was accomplished without errors but cilk/cilk.h and libcilkrts weren't built. I checked out the patches available on the internet they do support non x86 architectures but I think just i386 not arm.
Are there other patches or config options to add while building so that I get those libraries along with the build
I was wondering if it is possible to create an array of reducers in C?
I already read the documentation, but they use always only one reducer. However, how do I use Cilk reducers for an array with int or double values? Can you give me a short example?
Thanks in advance.