effect of using array alignment
Hi,I am trying to figure out the effect of using array alignment in vectorization of MIC code.Here is a simple piece of offload code from Intel #pragma offload target(mic:cardId) #pragma omp parallel...
View ArticleProblem linking when offloading STL
We have some offload code that doesn't run because dlopen() fails with undefined symbols. One of the suggestions that I found was to add "-Wl,-zdefs" to the offload linker options, which might bring...
View ArticleXeon Phi Register Manual
Hi,We are planning to get the Xeon Phi working in our research environment which is a non-linux / non-windows operating system. Therefore we need to write our own drivers and our driver model is quite...
View ArticleIntel(R) MPSS 3.2 released!
Intel(R) MPSS 3.2 is now available. See http://software.intel.com/en-us/articles/intel-manycore-platform-software-stack-mpssA summary of the most notable features and changes:Coprocessor user...
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difference between omp target and native mode
Now that OpenMP 4 is fairly well supported on the Fortran side (except for simd reduction), I've been able to set up an example which can run in host, MIC native, and offload mode, simply by changing...
View Articlepage table
I am curious to know how is page tables are implemented in MIC as well as on Xeon architecture or these are completely OS depend.Is there a single page table which is accessed by all the cores or each...
View ArticleReference for C++11 support in offloaded code
Is there a reference someplace which documents what features of C++11 are supported in offloaded code? It appears to me that std::thread::yield and std::map::emplace are not supported, but it would be...
View ArticlePoor performance gain when no-vec, no-sim // Vtune and libiomp5.so
Hello everybody,After three long days, I come here in search of help.Context: I am running a N-body code written in Fortran, using OMP directives (the only one used is a $omp parallel directive). I am...
View ArticleAutomatic fan speed with passive Xeon Phi
At this point, are there any means within the OS to make the system fan spin faster when the temperature of a passively cooled Xeon Phi increases to dangerous levels?
View ArticleEnergy Measurement on MIC Xeon Phi
Hi Here is my way of measuring the total power consumption on Xeon Phi. But the performance result seems not to be so reasonable. I use "Total power, win 0 uW" as the parameter for measurements. The...
View ArticlePipe micsmc output to a c++ app without writing to console
Hello,I'm interested in doing some power analysis on the Xeon Phi and I'm trying to pipe the output of the micsmc tool into a c++ application. I have a bash script which calls micsmc -f periodically...
View ArticleOffloading virtual functions?
Hi,Can we offload virtual functions. I am trying to do that using the following code and I am getting seg fault.#include using namespace std;class Polygon { public:#pragma offload_attribute(push,...
View Articleabout RAPL PAPI event
Is RAPL event PACKAGE_ENERGY:PACKAGE0 including DRAM_ENERGY:PACKAGE0 and PP0_ENERGY:PACKAGE0? Or the total system energy should add the three events joules together? PACKAGE_ENERGY:PACKAGE0...
View ArticleTech reviewer needed for upcoming book about Intel compilers, tools and...
Hello,I am currently working on a book about parallel programming using the intel compilers and libraries. A chapter will be dedicated to the Xeon Phi and I would therefore need an Intel tech reviewer...
View ArticleHow to check if a node has a coprocessor?
How to I know if a node has a coprocessor while on runtime?Thanks!
View Articledongguan Flatpack Container House prices
DONGGUAN YH INTEGRATED HOUSING CO., LTD(Mr. Will Zhang,tel:8.6.0.7.6.9.8.6.7.2.5.8.8.8 )is a professional company of Flatpack Container House. Flatpack Container House, also known as the...
View Articledongguan Flatpack Container House prices
DONGGUAN YH INTEGRATED HOUSING CO., LTD(Mr. Will Zhang,tel:8.6.0.7.6.9.8.6.7.2.5.8.8.8 )is a professional company of Flatpack Container House. Flatpack Container House, also known as the...
View ArticleEnergy Measurement on MIC Xeon Phi
Hi Here is my way of measuring the total power consumption on Xeon Phi. But the performance result seems not to be so reasonable. I use "Total power, win 0 uW" as the parameter for measurements. The...
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TBB's parallel_sort is 5x slower on Xeon Phi 5110P, than on E5-2670 ??
Dear all,I'm benchmarking accelerated libraries for key-value sorting. Intel mentions parallel_sort in hundreds of tutorials, but they never go further than just mentioning - almost no compilable code...
View ArticleCompiling the GCC Cross Compiler
Hi,I have tried to compile the GCC 4.7.0 included in the MPSS source package, but all attempts failed so far. The binutils succeeded.Host System: Ubuntu x64, GCC 4.7.3 and GCC 4.8.2Configured with...
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