Intel® Cilk™ Plus

How to compile cilk plus runtime source with Intel® C++ Composer XE 2013

Dear all,

I want to compile cilk plus runtime source with Intel® C++ Composer XE 2013. I build the cilk plus runtime according to the directions in the "readme" file (libtoolize; aclocal; automake --add-missing; autoconf; ./configure; make; make install). But in this way, gcc is used by default.

Please, could somebody give me some guidelines in order to compile cilk plus runtime source with Intel® C++ Composer XE 2013? 

Thanks a lot for your help.

Best Regards,

Yaqiong Peng

Thread local calculation of reducers?

Hi,

I wonder how reducers work internally. So if a value is set into a reducer, does it block other threads each time a value is set?

I ask because normally I'm creating a local 'reducer', e.g. a local histogram on an image tile and on leaving the thread all the data is pushed at once into the global reducer. Just like local memory operations in OpenCL.

Why does the available number of workers changes execution for a 1 cilk_spawn program?

While optimizing a matrix manipulation code in C, I used CilkPlus to spawn a thread to execute in parallel two functions that are data independent and somewhat computationally intensive. Cilk_spawn is used in only one place in the code as follows:

Run-time exit function

Hello,
I would like to understand run-time execution in Cilk a little better. 
I have downloaded Intel Cilk run-time release (cilkplus-rtl-003365 - released 3-May-2013).

On 09/09/2013 I had asked a question seeking to figure out which is the last function executed before Cilk run-time ends assuming execution went without any problems.

Barry suggested to look at “__cilkrts_c_return_from_initial()” in scheduler.c  and indeed that was what I needed at that time.

Cilk worker

Hello,

I would like to understand Cilk worker creation a litter better.
I am not sure how to phrase this question so I’ll give it my best.
I have downloaded Intel Cilk runtime release (cilkplus-rtl-003365 -  released 3-May-2013).

I would like to create a new Cilk worker that does not cause cross-threading issues but this new worker would not be a part of the work collective.

Iscriversi a Intel® Cilk™ Plus