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  1. double complex vectorization ???

    https://software.intel.com/fr-fr/forums/intel-fortran-compiler-for-linux-and-mac-os-x/topic/268295

    I tried to vectorize my sample code with limited succes. On SSE3 Xeonvectorization works for all data types except double complex. (-xP option; Intel Fortran ...

  2. optimization with xW vectorization

    https://software.intel.com/fr-fr/forums/intel-fortran-compiler-for-linux-and-mac-os-x/topic/267709

    Having problems using the vectorization switch with ifc 7.1 on a server with P4 Xeon processors running MPI. The following section of code is the problem: 1 do  ...

  3. Vectorization of a function call

    https://software.intel.com/fr-fr/forums/intel-many-integrated-core/topic/558505

    Hello, I have a following problem: I have a big loop inside my program that I want to parallelize and vectorize. Inside the loop I do a lot of math computations, but ...

  4. Vectorization Issue with loop iterations

    https://software.intel.com/fr-fr/forums/intel-c-compiler/topic/508476

    Hi All, I am trying to compile following sample kernel with Intel (ICC) 14.0.0 20130728 (or version > 12 ). I see strange behaviour with vectorization.

  5. icc auto vectorization

    https://software.intel.com/fr-fr/forums/intel-c-compiler/topic/309263

    Hi, I'm quite new to icc, and I found it's optimizationquite useful. However, is there a way to tell the compilera specific chunk of code to not optimize? Basically ...

  6. New tool available in beta: Vectorization Advisor

    https://software.intel.com/fr-fr/forums/intel-many-integrated-core/topic/551030

    Apr 23, 2015 ... Software must be both threaded and vectorized to get the full performance benefit from today's and tomorrow's hardware. Vectorization Advisor ...

  7. Vectorization report - where is it? and why such long lines in build log?

    https://software.intel.com/fr-fr/forums/intel-visual-fortran-compiler-for-windows/topic/285609

    IVF 11.1.067 VS2005I compile the following code with options /c /QxSSSE3 / Qvec-report:3 /Qvc8 (among others) but get no vectorization report messages ( even ...

  8. memmove vectorization opt-report

    https://software.intel.com/fr-fr/forums/intel-fortran-compiler-for-linux-and-mac-os-x/topic/537754

    Hi all, I am looking at the vectorization report of this instruction a(ipos+1:m+1)=a( ipos:m) where a is a character(20) array. The optimization report look like that :

  9. vectorization (and parallelization?) in a single open mp thread

    https://software.intel.com/fr-fr/forums/intel-math-kernel-library/topic/386209

    I expected vectorization to make the code faster than loops do. Am i wrong? Maybe the vectors should be larger than a certain size? Another question : I don't  ...

  10. MKL library: No vectorization

    https://software.intel.com/fr-fr/node/628180

    27 avr. 2016 ... I am wondering is it possible to direct the MKL to use no-vectorization code. I want to quantify the effect of using SIMD extensions against no ...

  11. vectorization of variable stride for loop

    https://software.intel.com/fr-fr/node/606426

    Jan 9, 2016 ... I noticed that Intel 16.0 and 16.0.1 C++ improved scalar optimization of variable stride to the point where it matches gcc and MSVC and makes ...

  12. Vectorize Capability of Intel Compiler in video coding

    https://software.intel.com/fr-fr/forums/intel-c-compiler/topic/307244

    I checked the asm code generated by Intel Compile (IC) C++9.0. It seems that IC could not vectorize the following functions:for (i=0;i.

  13. OpenMP directive prevents vectorization

    https://software.intel.com/fr-fr/forums/intel-fortran-compiler-for-linux-and-mac-os-x/topic/269661

    Hi,I think I am seeing a problem on 11.1.038 that is not on showing up 11.0.074 on my Linux system. I have a simple matrix vector multiply routine where the ...

  14. Function Vectorization

    https://software.intel.com/fr-fr/forums/intel-isa-extensions/topic/393842

    Recently I tried to vectorize a code with simd pragma, and from the Intel VTune report, I see that almost 20% of CPU time is in "__svml_sincos4_e9" function ...

  15. __restrict promotes incorrect vectorization, ICL 16.0

    https://software.intel.com/fr-fr/node/595293

    This vectorization might be expected if #pragma ivdep or #pragma simd were asserted, meaning that the programmer asserts there will be no repeated elements ...

  16. Free webinar April 7 2015 9am PST "Further Vectorization Features ...

    https://software.intel.com/fr-fr/forums/intel-fortran-compiler-for-linux-and-mac-os-x/topic/545128

    3 avr. 2015 ... There is a free webinar “Further Vectorization Features of the Intel Compiler” coming next Tuesday talking specifically about getting more ...

  17. Loop vectorization and how to read optimization report

    https://software.intel.com/fr-fr/forums/software-tuning-performance-optimization-platform-monitoring/topic/531009

    remark #15344: loop was not vectorized: vector dependence prevents vectorization remark #15346: vector dependence: assumed FLOW dependence between ...

  18. ifort 13.0 generates unneeded code during vectorization

    https://software.intel.com/fr-fr/forums/intel-fortran-compiler-for-linux-and-mac-os-x/topic/328989

    By the way, the compiler seems to be too aggressive in vectorization. It generates simulated gathers for accesses to the o array. In order to use VPSLLD, it uses ...

  19. How to force ICC to inline and vectorize a function?

    https://software.intel.com/fr-fr/forums/intel-c-compiler/topic/559959

    I also added "force vectorize" pragma to the loop. Now if I leave it like this, the testing program takes 10 seconds. If I put the body of "Function" directly into the ...

  20. loop with indirect addressing does not vectorize

    https://software.intel.com/fr-fr/forums/intel-c-compiler/topic/286951

    Is there anyway to get this loop to vectorize with icpc in Linux/Mac? ... #pragma vector always says vectorize regardless of efficiency or possible degradation of ...

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