Intel Xeon Phi Coprocessor

Windows External Network Bridge


Is it possible to setup an external network bridge for the PHI on using a windows based operating system?

This information is not provided in the User's Guide.

I have simply highlighted the PHI and External network adapters and created a bridge.

What are the next steps for this to work?

Do i absolutely need to use Linux for this feature?



Xeon Phi - Error in installation

When installing the mpss-3.5.1 on CentOS 7 (kernel 3.10.0-229.el7.x86_64), I got an error when issue " micctrl --initdefaults" as below:

[Error] micrasrelmond: [Parse] START_WITH_SECURITY=false invalid config parameter

[Warning] micrasrelmond: Generating compatibility network config file /opt/intel/mic/filesystem/micrasrelmond/etc/sysconfig/network/ifcfg-mic0 for IDB.

Need Phi Optimization Expert to work on new project for Road Material Simulation


We require a Intel Phi processor optimization expert to help with optimization FORTRAN code for road material stress simulation. The models have been coded and are working, just need a guru to help move the load off to Phi cards.

Currently it takes 20 days to run a simulation point on a regular Intel i7 2.8 Ghz Quad core notebook processor, we need to get that down to under 40 minutes.

timing is different each time

Hello ,

I wrote a simple application on cpu and I am using offload pragmas for the pieces I want to run on the coprocessors.

Since I am compiling on cpu and I use offloads , I am using :

<code>export MIC_ENV_PREFIX=MIC

in order to specify the threads number.

My problems:

1) Running the code , shows always 40 threads been used.

2) Running again and again the code without compiling , I am getting different time results.

What does __kmp_hierarchical_barrier_release imply in vTune?


I profiled my program running on Xeon Phi in native mode via vTune and realized that a lot of time goes to __kmp_hierarchical_barrier_release. What does this normally imply? I know it must be some OpenMP issue, but have no idea how to solve it.

BTW, the same piece of code, whening running on Xeon, vTune tells that some significant portion of time (much less than the __kmp_hierarchical_barrier_release in Phi though) goes to __kmp_launch_threads.

Thanks in advance!

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