Intel® Cilk™ Plus is the easiest, quickest way to harness the power of both multicore and vector processing.
Intel Cilk Plus is an extension to the C and C++ languages to support data and task parallelism.
High Performance:
Easy to Learn:
Easy to Use:
So you've run your application under the Cilk screen race detector, and it's pointed to dozens of races in your code. What do you do about it?
Intel engineer, Barry Tannenbaum, has a number of suggestions about how to deal with races in Cilk code.
http://software.intel.com/en-us/articles/cilk-screen-part-ii-i-found-a-race-now-what-do-i-do
Writing parallel code exposes you to race conditions which are extremely difficult to track down using traditional serial programming tools. Barry Tannenbaum provides an introduction to the Cilk screen race detector which can find races in Cilk code. A unique feature of the Cilk screen race detector is that it will find races between any set of executed Cilk code, regardless of how it is scheduled by the Cilk runtime.
http://software.intel.com/en-us/articles/an-introduction-to-the-cilk-screen-race-detector
Come hear two Intel engineers, Bob Chesebrough and Anoop Madhusoodhanan Prabha, talk about how vectorization can be used to speed up programs on May 14th @ 9:00 AM PST. Register here.
Title: Introduction to Vectorization using Intel® C++ Compiler Cilk™ Plus Extensions
Vectorization plays a paramount role in speeding up programs with data parallelism inherent in their algorithms. Intel C++ Compiler can boost performance by detecting the potential parallelism in a loop by checking the data dependence and data flow using its auto-vectorization feature. With contemporary hardware, vector register widths continue to increase and explicit vector programming methods can be used to achieve greater performance. Intel® Cilk™ Plus allows a developer to do explicit vectorization using Intel® Cilk Plus™ SIMD directive, Array Notation and elemental functions to enable the performance potential in your application. Attend this webinar and see it in action, complete with code samples.
Check out other webinars coming up this spring.
Hello everyone,
Yesterday I got fresh version of XE Composer 2013 (finally...). After painless installation, I have turned on the library [Intel Composer XE 2013 - > Use Intel C++]. Furthermore I have set up additional Include Directories: .../mkl/include & ...compiler/include.
Of course I haven't forgotten about the headers -> #include <cilk\cilk.h>.
So after all of this, Visual Studio 2010 is still showing me the error - "_Cilk_for" is undefined, the same for "spawn" and "sync". Why?
Additionally, since I am writing my code in C, I wanted to use C99 standard, but there is also a problem. "Enable C99 support - > Yes (/Qstd = c99)".
When call a loop :
for(int i, ...)
{
...
}
VS tells me that I cannot typedef int i, inside a loop - so C99 is not working.
What have I done wrong? Thank you for all replies.
Regards
Marek
PS. Before I have been using intel MKL, without rest of the XE Composer package - no problems there.
Hello,
I'm looking for a CILK version of FFTW.
Can you help ?
Thanks,
Zvika
The following program causes a runtime crash reducer_impl.cpp:527: cilk assertion failed: h
My compiler is icc 13.1.1 on Ubuntu 12.04.
#include <cilk/reducer.h>
#include <cilk/reducer_opadd.h>
#include <cilk/cilk.h>
#include void empty() {}
std::atomic n;
int test(int *x) {
cilk::reducer_opadd r;
n = 40000;
while (n--) {
cilk_spawn empty();
}
return 0;
}
int main() {
int x = 1;
return test(&x);
}
