HPCwire: The Week in Review

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July 02, 2009

The Week in Review

by John E. West, for HPCwire

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Here is a collection of highlights, selected totally subjectively, from this week's HPC news stream as reported at insideHPC.com and HPCwire.

10 words and a link

Modifying VSIPL to run on GPUs

'Alice' brings boys and girls to computer science

CSCS upgrades Cray to XT5, adds storage

Sun Blade X6275 with Nehalems set SPECint and SPECfp records

GridFTP puts bits in the fastlane

Scalable Informatics selling Cray CX-1s, provides cloud storage to NewServers

DARPA's Ubiquitous High Performance Computing program releases RFI

Penguin Computing puts Tesla cluster at U Delaware

IBM announces open source machine learning compiler

Boston Ltd puts 4 TFLOPS of AMD GPU in 1U

Argonne and HPCMP win OASCRs for outstanding data visualization

IBM lab working on streaming stock analysis

A tour of Blue Waters' new home

Cilk++ Multicore FP-Tree Pattern Mining Algorithm

Yuxiong He has posted a great look at multicore parallelization of the FP-tree algorithm for frequent pattern mining via the Cilkarts blog. Naturally, the example provides a Cilk++ sample implementation of the algorithm and associated performance metrics. The article is quite detailed and presents some great code examples.

The FP-tree algorithm builds a prefix tree representation of a given database of transactions, and generates a complete group of frequent item sets through recursive tree projections.

Without stealing too much of He's thunder, his Cilk++ implementation results in a 3.6X speedup on tree building and a 6.6X speedup on frequent set generation using a 16 core AMD Opteron machine.

Istanbul beats Nehalem on HPL, but worse on STREAM

This is interesting: Timothy Prickett Morgan at The Reg is reporting on a benchmarking job that cluster maker Advanced Clustering Technologies (ACT) did comparing the performance (and price performance) of two of its own two-socket servers in AMD and Intel flavors running Linpack; everything else, including the compiler, stayed the same.

The machines tested:

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