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In the period prior to the launch of Intel® Xeon Phi™ coprocessor, Intel collected questions from developers who had been involved in pilot testing. This document contains some of the most common questions asked. Additional information and Best-Known-Methods for the Intel Xeon Phi coprocessor can be found here.

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New Jim Dempsey article: Elusive Algorithms – Parallel Scan

 

Since I haven't seen a notification of this elsewhere, the ever knowledgeable Jim Dempsey (QuickThreadProgramming.com) just published one of his great technical articles entitled, "Elusive Algorithms – Parallel Scan".

I believe this was an outgrowth of another discussion on the forums, "how to perform inclusive scan in C cilk".

--
Taylor
 

Error getting OFED to compile when mic is selected.

Compiling OFED with with phi and --all fails when compiling compat-rdma.
Compile without the "--with-xeon-phi" option works. 


./install.pl --with-xeon-phi --all

# cat /etc/redhat-release 
Red Hat Enterprise Linux Server release 7.1 (Maipo)

# uname -r
3.10.0-229.1.2.el7.x86_64

rpm -qi mpss-sdk-k1om-3.5-1.x86_64
Name        : mpss-sdk-k1om
Version     : 3.5
Release     : 1
Architecture: x86_64
Install Date: Thu 09 Apr 2015 10:00:28 PM CDT
Group       : base
Size        : 484359036
License     : various
Signature   : DSA/SHA1, Thu 02 Apr 2015 06:57:59 AM CDT, Key ID
718a1696ef328191

Elusive Algorithms – Parallel Scan

jim@quickthreadprogramming.com

This article on parallel programming will choose one of those elusive algorithms that upon first glance seem to be neither vectorizable nor parallelizable. The intent of this article is not to address the specific algorithm, but rather to provide you with an approach to problems that share similarities with this algorithm. The elusive algorithm for this article is the inclusive scan:

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