vectorize operator decrease performance
Hi I use intel compiler 15 and I have a code that include huge number of maximum operatonI write a a vectorize code for that max operation and performance of my application dramatically goes down .my...
View ArticleICC compiler error
I tried compile my application with mpiicpc 2017,it gives the following error message.": internal error: ** The compiler has encountered an unexpected problem. ** Segmentation violation signal raised....
View ArticleMemory leak when using offload in Intel HD Graphics 4600
My software using cilk_for occured memory leak.I want to know why memory leaks and how avoid memory leak.Thanks.source code:#include <cilk/cilk.h> #include <iostream> #include...
View ArticleMPI_Allreduce is toooo slow
I use the benchmark in Intel MPI (IMB) to measure the performance of MPI_Allreudce over a rack with 25 machines equipped with Infiniband 40G switch. (I use the latest version of parallel studio 2017...
View ArticleMemory leak: Temporary std::set is not deleted.
The following program: #include <set> #include <iostream> std::set<std::string> Foo() { std::set<std::string> ret; ret.insert("test"); return ret; } int main(int argc, char**...
View Articlepragma offload target(gfx) error
Hi,I installed Intel(R) Parallel Studio XE 2017 for Linux (Ubuntu 14.04) and I'm trying to write a simple C code to test Cilk Plus and specifically the pragma offload. I have a Intel(R) Iris Pro...
View ArticleNaN boxing
Hi, I am designing a class called Dynamic that can store many different types: a null, a boolean, a 48-bit signed integer, a 64-bit floating point, or a pointer to one of a few defined types. This...
View ArticleOpenMP detects only a single core on multi-socket/multi-core system
I program in C++ and uses MPI/OpenMP for parallelization. The machine has 2 CPU sockets and 8 cores per each socket. The program additionally uses c++11 threads. Their affinity is controlled by...
View ArticleAVX2/512: Surprising return types and parameter types
Hi,while working with AVX-2 and -512, we noticed the following discrepancies:1) Why does _mm256_i64gather_epi64 return an __m128i according to the documentation? We would expect an __m256i. Dash...
View Article"xilink.exe" exited with code -1073741515
I cannot link any Intel Compiler 17.0 Update 2 library Targets in Visual Studio 2015Both static and dynamic libs fail with the following error"xilink.exe" exited with code -1073741515 1>C:\Program...
View Articlelambda capture [this]
V 17.0.132 Build 20161005I am doing some template meta functions, and have made great progress.... up until now.I have an object (struct), with a member function. I wish to construct a lambda capture...
View ArticleError compiling with Visual Studio 2015 Update 3 and Intel C++ Compiler 17.0
When trying to compile any project with the Intel C++ compiler 17.0, I get 100 compilation errors before the compilation aborts. I have not found any other topic describing the same problems, has...
View ArticleRemoving Parallel Studio 2017
Hello,I have Parallel Studio 2016 Cluster version installed. As the new 2017 version came out I downloaded to try it out. Of course, it installed itself inside my Visual Studio 2013. After trying it...
View ArticleBug Report: icc 17
Hi,https://godbolt.org/g/lrH8Dystruct A { template <class T> auto func(T t) -> decltype(T::other); }; struct B: A { template <class T> auto func(T t) -> decltype(T::other); using...
View ArticleFalse positive: warning #1125: function ${A} is hidden by function ${B}
struct A { private: virtual void foo() {} // Side-info: template-method pattern in the real code. }; struct B : public A { private: void foo(int) {} }; The warning is stating that A::foo is hidden by...
View ArticleIntegration between Intel® System Studio Professional Edition and Microsoft...
I have installed on both of my computers Microsoft Visual Studio Ultimate 2013 Version 12.0.40629.00 Update 5 and Microsoft Visual Studio Community 2015 Version 14.0.25431.01 Update 3. I have also...
View ArticleC++ and Fortran linking
Hello,I'm trying to link C++ and fortran prorgam together, but I get the following error/usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/crt1.o: In function `_start':(.text+0x20): undefined...
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internal error: 010101_14277
Hello,Attached is a (preprocessed) source file that triggers the error.> /opt/intel/compilers_and_libraries/linux/bin/intel64/icpc --version icpc...
View ArticleIssue with O2/O3 optimisation using Intel compiler 2017 update 2
Hello,While trying to compare parallelism between OMP, MPI, Cuda and OpenACC, I've encountered some dangerous behavior using the "Intel ICPC 17.0.2 20170213". The code below is solving the classical...
View Articlecompatibility with GCC 5.x and later built-in functions
GCC 5.x and later support built-in functions for overflow checking [1] that are unsupported by Intel C/C++ in versions including the recently released 2017.0.2.174 / 20170213. This creates issues when...
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