Gromacs 2018.2 build with icc hangs after I increase the cores more than 48...
Hi,I am trying to run gromacs-2018.2 which is compiled with intel compiler 2019 update1and with MKL fftw libraries on AMD EPYC 7601.Its running properly with NP=32 and 4 threads but when I try to...
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Intel® Parallel Studio XE Composer Edition for C++ Windows2017
Recently, we encountered incorrect value was got for some statement when optimization on in VS2015But it is correct if disable it, need your help to check whether there is any problem for intel...
View ArticleICC performance bug?
#include <stdint.h> void demux1 ( const int8_t * const __restrict__ in, const int h, int8_t * const __restrict__ out) { for (int i = 0; i < h; ++i) out[i] = in[2 * i]; } The code above...
View Articlebug?
The code below performs very poorly if compiled with ICC.I am observing a 2.3X slowdown (!) compared to GCC 8.2#include <stdint.h> void demux1 ( const int8_t * const __restrict__ in, const int h,...
View ArticleTrouble understanding warning message
Hello,I'm trying to modernize some of my codes, and face to a strange warning when compiling this simplified version of a pimpl implementation using unique_ptr.The message isicpc -xHOST pimpl.cpp...
View ArticleInconsistent behavior in `std::min(-0.0f,+0.0f)`
This case should be defined consistently. However, ICC (19.0.1) can be made to give inconsistent results. For example, consider the following code:#include <algorithm> inline float minwrap(float...
View Articlemove licence to another uiser in another domain
HI ,Apologies if this is not the correct place to ask, but I'm stuck in a intel support web site loop and can't raise a ticket !!! raising a ticket takes me to...
View ArticleC++ 0x and C++
For c++ I can use1 #ifdef _cplusplus2 #endifPlease tell me how to properly called directive for c++ 0x. Use this dirictive I want distinguish c++ code and c++ 0x.
View ArticleIs the Intel C++ Compiler (19.0) now only using the Clang front-end (i.e....
In 16.0, the Intel C++ Compiler provided two compilers (one based on EDG, another based on Clang).From the 16.0 documentation:Using the Command LineTo invoke the compiler from the command line, use a...
View Articleproblems generating prerequisites automatically
i have a mixed fortran/c++ code. generated a Makefile that correctly compiles the code. however, i ran into a problem generating prerequisites automatically for the c++ parts. the relevant part of the...
View ArticleProblem running code using MPI: ncpu is always 1 (Centos 7)
I'm running Parallel Studio XE 2019 Update 3, and I've got the problem where, when I run a program compiled using MPI, the number of CPUs is always set to 1. It runs, but only on 1 CPU. (It also...
View ArticleCannot find libmpicxx.so.12 library on Centos 6
I'm trying to test using mpirun on a system the code was not compiled on, and it's unable to find a library. I'm using Intel Parallel Studio XE 2019, update 3, to compile a mixed Fortran C++ code on...
View ArticleNAN constant value error on compilation under ICC
I have the following code (called misc.c) #include <stdlib.h> #include <stdio.h> #include <mkl.h> #include <math.h> // double my_value = 1.0f; // Works fine. double my_value =...
View Articlempiifort or mpiicc are missing
Dear Intel Developers and users,Recently I have downloaded parallel_studio_xe_2018_update1_composer_edition_online and installed in in my linux machine. The installation was done without any error...
View ArticleWith Visual Studio integration how is $(IPPIncludeDir) calculated and where...
I have multiple versions of IPP installed, including old versions which I'm trying to switch between for build experimentation with some legacy code.I'm trying to diagnose why I'm having problems...
View Article-std=c++17 fails with std::random on 19.0.4.243 20190416
*** test.cpp ***#include <random>int main(int argc, char** argv) { std::random_device r; return 0;}The above code fail with --std=c++17 on 19.0.4.243 20190416.shell> icpc -std=c++17...
View Articleicpc does not work with "--std=c++17" on (ICC) 19.0.4.243 20190416
icpc shows the following error when it is compiled with "-std=c++17" However, it is okay with "-std=c++11" and "-std=c++14". ICPC version: 19.0.4.243 20190416 OS : RHEL 7.6 /...
View Articlelnk 1181 reportlab installation in python
Though I have configured the path: path=C:\Program Files (x86)\Windows Kits\10\Lib\10.0.17763.0\ucrt and C:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools\VC, I am getting the error "file...
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