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Using the Intel XDK “Cordova for *” Build Option

Diagnostic 15038: remark: loop was not vectorized: conditional assignment to a scalar (Fortran)

Causes:

1. A loop contains a conditional statement
2. The conditional statement is controlling the assignment of a scalar value.
3. The logic of the assignment is such that the value of the scalar at the end of execution of the loop depends on the loop executing iterations strictly in-order  AND
4. the scalar value is referenced AFTER the loop exits.

Below is an example:

Examples:

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  • how to enable work-stealing

    Dear all,

    I want to enable work-stealing in intel OpenMP and thus set the variable KMP_TASKING=1. However, all OpenMP based programs have segmentation fault (core dumped) at the start of the parallel region.

    Please, could somebody give me some guidelines in order to enable the work-stealing feature in intel OpenMP? I use the latest icc and ifort to compile the C and fortran programs, respectively.

    Thanks a lot for your help.

    Best Regards,

    Yaqiong Peng

    Compiler flags

    Dear all,

    I am looking for flag option that used to generate intermediate representation of OpenMP* on icc, such as explain in (1.7.1 Work Sharing Example).

    Also, is it possible to extend  icc compiler by adding new pragma (directive)?

    Thanks in adavnce

    Regards

    Release Notes Information - Intel® XDK

    Selective Use of gatherhint/scatterhint Instructions

    Compiler Methodology for Intel® MIC Architecture

    Selective Use of gatherhint/scatterhint Instructions

    Overview

    The -opt-gather-scatter-unroll=<N> compiler option can be used to generate gatherhint/scatterhint instructions supported by the coprocessor.  This is useful if your code is doing non-unit stride accesses and/or uses indirect addressing via pointers or index arrays. 

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