Informatique parallèle

Unusual requirement?

Dear All,

We are involved in setting up an HPC cluster with about 25 Dell PowerEdge 720 servers, each equipped with 172 GB of RAM and 24 Intel cores running at 2,4 GHz). Every node is connected to a Gigabit Ethernet switch and to a 56 Gbps Mellanox Infiniband switch that provides storage access.

MKL: What to buy?

Hello I am quite disorientated about your MKL library.
I mean, I have developed a calculation software in C# that involves linear system resolution, with dense matrix (complex numbers). My resolution system is very slow, so I was very interested in your library but what to try?
What is Parallel Studio XE? and Which is the difference between Cluster, Professional and Composer Edition?
There are also dll for 64 and 32 bit?

Thank you for any help



Install Crush ; XE 2016 + Xcode 7.0 + OS X 10.10.5

I fail the installation of parallel Studio XE 2016 in my mac pro including OS X* 10.10.5 and Xcode 7.0.

How can I install it successfully?

I tried the click to dmg file  ==> no response 

$ sudo ./install_gui 

=> no response

$ sudo ./ 

./ line 616:  6866 Segmentation fault: 11  "$pset_engine_binary" --TEMP_FOLDER="$temp_folder" $params $root_nonroot 2> /dev/null

[BUG] C/C++ compiler incorrectly sign extending halfword operations


The compiler is incorrectly sign-extending halfword operations at all optimization levels above O0. I hit this bug with XE 2013 edition, but I have confirmed the problem exists in the most recent 2016 edition as well. This is affecting a critical project, can you please investigate? A reduced test case is provided below. 


#include <stdio.h>

typedef short size2s_t;
typedef int size4s_t;
typedef long long int size8s_t;

unexpected ?potrf subroutine failure


I need to generate a gaussian correlated noise based on a covariance matrix with fortran. I am using spotrf subroutine to do the cholesky decomposition. However, the decomposition is always failed at a specific row of input matrix. As the reference indicates, it means the leading minors of that row is not positive definite. But previous work with the same data in matlab chol function shows that the matrix is positive definite.

Is the Intel® IPP Asynchronous C/C++ library included in the standard IPP library?

I have searched the site quite rigorously but have been unable to determine for sure if the asynchronous library described here ( is available as part of the library downloaded from here (

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