Q&A responses posted from the April 2013 developer's introduction to Intel...
Answers have been posted for the questions raised during our April two-day training session for developers at the following...
View ArticleMPI communication from Phi to host
I have setup the Phi card for MPI based on: http://software.intel.com/en-us/articles/using-the-intel-mpi-library-on-intel-xeon-phi-coprocessor-systems that was posted in March 2013.I can run MPI code...
View ArticleNew MPSS (mpss_gold_update_3-2.1.6720-13) released!
A new MPSS was released on May 9, 2013. version mpss_gold_update_3-2.1.6720-13You can find it here: http://software.intel.com/en-us/articles/intel-manycore-platform-software-stack-mpssKey changes in...
View ArticleMPD Daemons and MIC?
Hi Again,The general MPI setup (i.e., Getting Started with Intel® MPI Library) says that MPD Demon needs to running on each node. Since the Phi card is treated as a separate node, one would think that...
View Articlempssd segfaults with NFS root after upgrading to mpss_gold_update_3-2.1.6720
Hello,I experience the following issue with mpss_gold_update_3-2.1.6720 on a Scientific Linux 6.3. When the root device is a NFS export, mpssd fails with this message : Tue May 14 17:28:23 2013:...
View ArticleFastest possible barrier
For the last weeks I tried around with barriers on the Xeon Phi. Right now it seems to me that the already included barrier in OpenMP yields the best performance. I can beat the cycles / barrier by...
View ArticleBuilding a loadable kernel module for MIC?
Sorry if this has been answered elsewhere -- I have not had any luck searching for info...I like to use inline calls to the RDPMC instruction to do performance counter measurements around blocks of...
View ArticleMemory usage tool
Hi,Is there any tool I can use on the Xeon Phi to see which program is using what amount of memory. There reason for this request is that I'm seeing a constant increase of the memory usage reported by...
View Articleicpc generates vector instructions for normal C++ and causes crashes
Hi,I'm trying to port our large application to run natively on the Xeon Phi card.I've compiled it but there are some problems and I think the problems are related to the compiler and that it generates...
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RESOURCES (including downloads)
Here are links to the available downloads.An introductory explanation can be found in "Knights Corner: Open source software stack."Source Code: MPSS downloads...
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FAQs: Compiler
In the period prior to the launch of Intel® Xeon Phi™ coprocessor, Intel collected questions from developers who had been involved in pilot testing. This document contains some of the most common...
View ArticleFAQS: Performance, Profiling and Optimization.
In the period prior to the launch of Intel® Xeon Phi™ coprocessor, Intel collected questions from developers who had been involved in pilot testing. This document contains some of the most common...
View ArticleWhat collateral/documentation do you want to see?
Do you have questions that you are not finding the answers for in our documentation? Need more training, source code examples, on what specifically? Help us understand what's missing so that we can...
View ArticleFAQs: Libraries
In the period prior to the launch of Intel® Xeon Phi™ coprocessor, Intel collected questions from developers who had been involved in pilot testing. This document contains some of the most common...
View ArticleWindows* Early Enabling for Intel(R) Xeon Phi(tm) coprocessors - Now open to...
Windows* early enabling for Intel(R) Xeon Phi(tm) CoprocessorsWe are excited to announce the release of Beta software drivers and development tools for you to run Windows* on Intel(R) Xeon(R) processor...
View ArticleStability issues for the Xeon Phi card?
I have been trying to get the Intel Xeon Phi card to run in my Intel s2600gz server (with an external power supply if you are wondering).I have gotten the card to run under both Ubuntu 12.04 and Centos...
View ArticleTroubleshooting VTune Amplifier collection issues
Has your attempt to install and use VTune Amplifier XE been side-tracked by errors such as the following? “Error Connecting to MIC card.” Normally the regular installation of VTune Amplifier XE,...
View Articlequestion about caches in mic
From the online resources, each core has a 512K L2 cache, can they shall the L2 caches? My program is cache sensetive, so I really have to deal with cache very carefully, more cache reuse is better. My...
View ArticleGot to work Python as a native application
Dear all,I have managed to crosscompile python and run it on the mic, In our research group we use python + multiprocessing module to build quick & fast prototypes. Since the mic architecture has...
View ArticleKMP_PLACE_THREADS OpenMP affinity variable
I posted a question on http://software.intel.com/en-us/blogs/2013/02/15/new-kmp-place-threads-o...I'll post it here too since it'll probably be quicker.<blockquote>We want to use cores 0..29 for...
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