icc

问题 First, I would like to say I'm not an image processing specialist. I would like to convert image colorspace from one to another, and change icc color profile at the same time. I managed to do it using JMagick (the ImageMagick Java port), but no way in pure Java (even using JAI). 回答1: Use ColorConvertOp, this will do the color space conversion. You have several options to set a icc color profile. Either you use a predefined profile by using getInstance with the correct color space constant or

问题 Can someone give me a TBB example how to: set the maximum count of active threads. execute tasks that are independent from each others and presented in the form of class, not static functions. 回答1: Here's a couple of complete examples, one using parallel_for , the other using parallel_for_each . Update 2014-04-12 : These show what I'd consider to be a pretty old fashioned way of using TBB now; I've added a separate answer using parallel_for with a C++11 lambda. #include "tbb/blocked_range.h"

问题 MSVC and ICC both support the intrinsics _addcarry_u64 and _addcarryx_u64 . According to Intel's Intrinsic Guide and white paper these should map to adcx and adox respectively. However, by looking at the generated assembly it's clear they map to adc and adcx respectively and there is no intrinsic which maps to adox . Additionally, telling the compiler to enable AVX2 with /arch:AVX2 in MSVC or -march=core-avx2 with ICC on Linux makes no difference. I'm not sure how to enable ADX with MSVC and

问题 I am investigating the effect of vectorization on the performance of the program. In this regard, I have written following code: #include <stdio.h> #include <sys/time.h> #include <stdlib.h> #define LEN 10000000 int main(){ struct timeval stTime, endTime; double* a = (double*)malloc(LEN*sizeof(*a)); double* b = (double*)malloc(LEN*sizeof(*b)); double* c = (double*)malloc(LEN*sizeof(*c)); int k; for(k = 0; k < LEN; k++){ a[k] = rand(); b[k] = rand(); } gettimeofday(&stTime, NULL); for(k = 0; k

问题 Why does this simple c++ code snippet do not compile? #include <algorithm> #define SIZE (1000) struct S { int *vect; }; int main() { struct S* s = static_cast<struct S*>(malloc(sizeof(struct S))); s->vect = static_cast<int*>(malloc(sizeof(int) * SIZE)); for(int i = 0; i < SIZE; i++) { s->vect[i] = i; } std::sort(s->vect, s->vect + SIZE); } The compiler returns the following error related to the std::sort call 1>C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.12

问题 I have a code of a Plug In from an SDK. The code is in Debug Mode. I use Intel Compiler which only applies optimizations in Release Mode. Under configuration manager of the project only "Debug" mode is defined. How could I switch to "Release" mode and enable all Intel Compiler's optimizations? If I enable them on debug mode nothing is applied (Empty Report). I couldn't find the trick to do so. Thank You. P.S. I do use the /MT switch yet still. 回答1: Project configurations are managed by the

问题 If multi-file IPO (also commonly known as link-time optimization) is being used with icc, is it possible that code can be optimized across the C and C++ language boundary? For example, can a C function be inlined into a C++ caller? This has been tested to work for clang and gcc but the LTO mechanism is somewhat different for icc is somewhat different. 来源： https://stackoverflow.com/questions/48030795/when-using-mutli-file-ipo-can-icc-optimize-across-the-c-and-c-language-bounda

问题 I'm trying to convert an RGB-pdf file created by Inkscape to a print ready cmyk-pdf using PSOcoated_v3.icc color profile. PDF generation works fine. However, I'd like to check for correct final colors, especially for the black. As I did not found any (free) tool to pick the cmyk color from the final pdf I thought as a first check I convert the RGB-pdf to cmyk-tiff and check the black value. Doing so using gs -q -dBATCH -dSAFER -dNOPAUSE \ -sDEVICE=tiff32nc \ -sDefaultRGBProfile=sRGB2014.icc \

问题 Whilst looking at build systems, a lot of them (SCons, bjam, cmake, Tundra, etc) have a built-in #include scanner. Yet gcc & icc offer a -MMD (or -MD ) option which outputs the names of the header files that the C++ file depends upon. The -MMD dependency option seems to be reliable. If you add a #include to a C file, its timestamp would change so the build system would recompile it. If you add a #include to a header file, its timestamp would change and it would recompile all affected C files.

问题 Is there a format of *.gvs files, used by GuideView OpenMP performance analyser? The "guide.gvs" is generated, f.e. by intel's OpenMP'ed programmes with $ export LD_PRELOAD=<path_to_icc_or_redist>/lib/libiompprof5.so $ ./openmp_parallelized_prog $ ls -l guide.gvs 回答1: It s a plain text. Here is an example of such from very short omp programme: $ cat guide.gvs *** KAI statistics library k3301 *** Begin Task 0 Environment variables: OMP_NUM_THREADS : 2 OMP_SCHEDULE : static OMP_DYNAMIC : FALSE