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Introducción al Desarrollo de aplicaciones de alto rendimiento para coprocesadores Intel® Xeon e Intel® Xeon Phi™.
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Los autores Michael McCool, Arch D. Robison y James Reinders utilizan un método basado en patrones estructurados que debería poner el tema al alcance de todos los desarrolladores de software.

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General Matrix Multiply Sample
Por Vadim Kartoshkin (Intel)Publicado en 09/11/20140
General Matrix Multiply (GEMM) sample demonstrates how to efficiently utilize an OpenCL™ device to perform general matrix multiply operation on two dense square matrices. The primary target devices that are suitable for this sample are the devices with cache memory: Intel® Xeon Phi™ and Intel® Ar...
Median Filter
Por Vadim Kartoshkin (Intel)Publicado en 09/11/20140
The sample demonstrates how to implement efficient median filter with OpenCL™ standard. This implementation relies on auto-vectorization performed by Intel® SDK for OpenCL Applications compiler.
How to analyze OpenMP* applications using Intel® VTune™ Amplifier XE 2015
Por kevin-oleary (Intel)Publicado en 09/08/20140
  Introduction   Intel® VTune™ Amplifier XE 2015 now includes extensive capabilities for analyzing OpenMP applications. This article will step through this analysis on an Intel® Xeon Phi™ coprocessor.   Compiling and running the application   The application we will be using is one of the ...
Intel® Xeon™ E5-2600 v3 Product Family
Por BELINDA L. (Intel)Publicado en 09/08/20140
Based on Intel® Core™ microarchitecture (formerly codenamed Haswell) and manufactured on 22-nanometer process technology, these processors provide significant performance over the previous-generation Intel® Xeon™ processor E5-2600 v2 product family. This is the first Intel® Xeon® processor fami...
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CL_DEVICE_TYPE_CPU not working in Windows 8.1
Por Yaknan G.1
Hi, I recently tried to run my OpenCL program on a new windows 8.1 computer but the program returns an error when the device type is CL_DEVICE_TYPE_CPU. When I change the device type to a CL_DEVICE_TYPE_GPU or CL_DEVICE_TYPE_ ALL it ran the program on the GPU. Here is the system specification of the new computer: OS: Windows 8.1 Processor: Intel Core i7 - 4700MQ clocked at 2.40GHz Display Adapter: Intel HD Graphic 4600 and NVIDIA GeForce GT 740M How can I resolve this problem and is OpenCL having issues with windows 8.1? Please help! Yaknan
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Lunching several MPI processes on multicore nodes
Por Dmitry K.3
Hi everyone, I have a simple issue, which must have a solution. Is it possible to assign several MPI processes to several nodes, such that first MPI process occupies full node, whereas other MPI processes are distributed on cores of the other nodes? I have an example below: On a cluster with 4 cores per node, to assign 2 MPI process to 2 nodes I do the following: #PBS -l nodes=2:ppn=4 mpirun -pernode -np 2 ./hybprog The question is how to assign 8 MPI processes to 3 nodes, such that first MPI process occupies first node, whereas other 7 MPI processes are distributed on 7 cores of the other two nodes?  Best Regards, Dmitry        
Threadprivate issue
Por Adrian J.1
I'm having problems with ifort version 14.0.1 I'm working on a hybrid (OpenMP+MPI) FORTRAN code.  In that code the following pointer is declared and specified as threadprivate.  However, when I include it in a OpenMP parallel region (default none), I get this compile error: ftn  -O3 -r8 -openmp cal_xy.F90 cal_xy.F90(750): error #6752: Since the OpenMP* DEFAULT(NONE) clause applies, the PRIVATE, SHARED, REDUCTION, FIRSTPRIVATE, or LASTPRIVATE attribute must be explicitly specified for every variable.   [TERM_X]              select type(term_x) If I add the variable to one of the data sharing clauses of the parallel region I get this error instead: ftn -O3 -r8 -openmp calc_xy.F90 calc_xy.F90(739): error #7859: A SHARABLE or THREADPRIVATE entity is not permitted in a PRIVATE, FIRSTPRIVATE, LASTPRIVATE, SHARED or REDUCTION clause.   [TERM_X]                 call term_x%add(mat_a,col_r,& It looks to be like the first error I get (the #6752 error) only occurs from the "select type...
[OpenMP - Fortran] Scope of COMMON block variables
Por Edgardo Doerner2
Dear all, Although the answer of the question in the title is, in principle, quite clear, I am confused about the scope (shared or private) of variables declared in COMMON blocks inside functions that are not the main function. For example, I am trying to parallelize a MC Code of particle transport on matter using OpenMP, the main part of this program is like the following code: PROGRAM TUTOR2 IMPLICIT NONE [Variable initialization, some COMMON blocks, program initialization routines, etc...] C$OMP PARALLEL NUM_THREADS (4) C$OMP SINGLE       WRITE(*,*) "Number of OpenMP threads: ", OMP_GET_NUM_THREADS()       DO I=1,NCASE C$OMP TASK FIRSTPRIVATE(ESCORE)         CALL SHOWER(IQIN,EIN,XIN,YIN,ZIN,UIN,VIN,WIN,IRIN,WTIN) C$OMP END TASK       END DO C$OMP END SINGLE NOWAIT C$OMP END PARALLEL So I have a function call SHOWER() that realizes the simulation of the particle cascade. This function call another functions (RANDOM, PHOTON, ELECTR, etc) that realize the transport calcu...
C code - assertion failed: find_seq_in_lookup_table bug
Por Mohammed I.2
Hi, I'm having a problem when trying to compile with icc on c code, I'm getting: Internal error loop: assertion failed: find_seq_in_lookup_table: seq_number not found (shared/cfe/edgcpfe/il.c, line 3866) I had searched for this bug and seeming it had fixed at update5  (https://software.intel.com/en-us/articles/intel-composer-xe-2013-compile...) The problem is that I'm writing in C++ not in C !!! Useful Info: I'm using update.1 old licensed version, and got the above error. When I tried to download and install trial update 3 version, I had faced a problem regarding the license:   Error: A license for CCompL is not available (-5,412). Make sure that a license file is being used that contains a license for the requested feature.  If your license requires a license server, make sure that the server is using the right license file (usually, this would be the same license file that is being used by this application), and make sure that you have not changed the license file since star...
Help! Unity and Parallel Studio
Por Don Fantom J.1
  Hello, I'm a fresh. I 'm working on a project, in which I use the Unity to develop a game. We mainly use the C# script. I want to know if I can use the parallel studio 2013 to detect the effort, hotsopt and usage of my project? And how to detect? If it can't do that, is there any authority alternative ? Your help would be greatly appreciated!!! Thanks Very Much.
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