OpenMP spinning time


I am using a simple Merge Sort benchmark on the Xeon Phi. 78% of the total CPU time is consumed by ""

I tried to reduce the watsed time by the OpenMP runtime library by setting the "export KMP_BLOCKTIME=0". Please note that the application is running natively on the MIC. I have also tried "export OMP_WAIT_POLICY=passive". No effect!

Why this does not have any effect on the execution time or the wasted CPU time?

Thank you.

Run a function on mic0 and mic1 concurrently (OpenMP)


I am implementing openMP offload program currently running on single Phi device.
My computing node has 2 Phi devices named mic0 and mic1.
Could you please let me know how I can extend the following code section to run on both devices simultaneously.

Assume the code sections can be run independently to each other where all data (input and output) are independent.
I need to know the structure of code and the directives to do it properly in openMP. Further, compilation method also required.

Error when expanding benchmarks to two or more nodes

Hello, I'm running mp_linpack in two nodes(I have grasped how to run in one node :) ), I changed the path to mp_linpack/bin_intel/intel64, and modify the HPL.dat to set P=1, Q=2. Then I created hosts file, whose content is:


mic01 and mic03 is the two nodes where I want to run linpack. Then I use the command in MKL_userguide.pdf:

mpirun --prefix 1 -n 2 -hosts Node1,Node2 \
-genv LD_LIBRARY_PATH $LD_LIBRARY_PATH ./xhpl_offload_intel64

Questions about Intel® Software Development Suite Student Edition for OS X


I have some questions about Intel® Software Development Suite Student Edition for OS X:

1. As shown in "product info", Intel Software Development Suite Student Edition for "Linux" and "Windows" includes the MKL. However, it seems that Intel Software Development Suite Student Edition for "Mac OS X" does not !?!?! Is it true???

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I'm using mpss_gold_update_3-2.1.6720, with a uos version of

I'm now trying to install the vtune amplifier 2015 on this mpss, so I need sep3_15-k1om- and vtsspp-k1om- But I can find only sep3_15-k1om- and vtsspp-k1om-, but not vtsspp-k1om-

Intel® Parallel Studio XE 2015 Update 3 Professional Edition for Fortran Linux*

Intel® Parallel Studio XE 2015 Update 3 Professional Edition for Fortran parallel software development suite combines Intel's Fortran compiler; performance and parallel libraries; error checking, code robustness, and performance profiling tools into a single suite offering.  This new product release includes:

  • Développeurs
  • Linux*
  • Fortran
  • Intel® Composer XE
  • Compilateur Intel® Fortran
  • Intel® Fortran Composer XE
  • Bibliothèque Intel® Math Kernel Library
  • Intel® Fortran Studio XE
  • Intel® Parallel Studio XE Composer Edition
  • Intel® Parallel Studio XE Professional Edition
  • Intel® Advisor XE
  • Amplificateur Intel® VTune™ XE
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