The Internet Archive has a preservation copy of this work in our general collections.
The file type is application/pdf.
Filters
apenext: A Multi-Tflops LQCD Computing Project
[article]
2001
arXiv
pre-print
Preserved Fulltext
generation lattice QCD (LQCD) computing project, whose goal is the construction and operation of several large scale Multi-TFlops LQCD engines, providing an integrated peak performance of tens of TFlops ...
This paper is a slightly modified and reduced version of the proposal of the apeNEXT project, which was submitted to DESY and INFN in spring 2000. .It presents the basic motivations and ideas of a next ...
for apeNEXT. ...
arXiv:hep-lat/0102011v1
fatcat:omx24q2evjc5xgq2b7jv4glv5m
The apeNEXT project
2006
Nuclear Instruments and Methods in Physics Research Section A : Accelerators, Spectrometers, Detectors and Associated Equipment
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
Several generations of massively parallel computers optimised for these applications have been developed within the APE (array processor experiment) project. ...
This contribution explains how the apeNEXT architecture is optimised for Lattice QCD, provides an overview of the hardware and software of apeNEXT, and describes its new features, like the SPMD programming ...
Acknowledgements We like to warmly thank all people who have contributed to the apeNEXT project in the past, in particular W. Errico, H. Kaldass, N. Paschedag, R. De Pietri, F. Di Renzo, and L. ...
doi:10.1016/j.nima.2005.11.203
fatcat:hzdljbq7kjakrdnpfrsjoklg7q
ApeNEXT: architettura ed algoritmi di LGT
2001
Zenodo
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2021; you can also visit the original URL.
The file type is application/pdf.
[English] The aim of this thesis work was to measure the efficiency of the dedicated apeNEXT supercomputer, under design at INFN in Pisa, on a computation kernel particularly significant for lattice QCD ...
A code has been written to realise this computation, and the code has been run on a hardware model that reproduces its behaviour with the accuracy of one clock cycle. ...
La rappresentazione più usata nei calcolatori digitaliè quella standardizzata 1 dall'IEEE (Institute for Electrical and Electronic Engineers, inc.). ...
doi:10.5281/zenodo.4651591
fatcat:4bgg3bkvvvc6pjooxlcw3rnc64
The Potential of On-Chip Multiprocessing for QCD Machines
[chapter]
2005
Lecture Notes in Computer Science
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2007; you can also visit the original URL.
The file type is application/pdf.
We explore the opportunities offered by current and forthcoming VLSI technologies to on-chip multiprocessing for Quantum Chromo Dynamics (QCD), a computational grand challenge for which over half a dozen ...
Memory-Communication-Processing Tradeoffs for LQCD In this section, we apply the methodology developed in Section 2 to lattice QCD (LQCD), a discretized version of QCD, currently the most amenable for ...
The LQCD Computation The Lattice In LQCD, space-time is discretized and represented as a a four-dimensional toroidal graph, whose arcs are the domain of the gauge field and whose vertices are the domain ...
doi:10.1007/11602569_41
fatcat:tl5vimt37vgtxor7ov5c4xalom
Towards the petaflop for Lattice QCD simulations the PetaQCD project
2010
Journal of Physics, Conference Series
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2018; you can also visit the original URL.
The file type is application/pdf.
4-5 USA 11 Currently, most of the computing power is provided by dedicated computers, specifically developed for LQCD. ...
The use of super-computers (financed by the DOE) is also expected to provide a similar amount of computing power for LQCD. ...
doi:10.1088/1742-6596/219/5/052021
fatcat:ihb35o3ob5crnalmtkmof5leby
Ab Initio Determination of Light Hadron Masses
2008
Science
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
Other Versions
Three lattice spacings are used for a continuum extrapolation. ...
Blue Gene /L
In Europe: apeNEXT
Lattice QCD
simple domain
decomposition
scalability
highly demanding as to
cache-to-memory data rate
about 1 Byte / flop
If LQCD performs well, most ...
Virtual cut-through hardware routing
425 MB/s on all 12 node links (5.1 GB/s per
node)
Communications backbone for
computations
188 TB/s total bandwidth
Collective Network
Interconnects all compute ...
doi:10.1126/science.1163233
pmid:19023076
fatcat:6lygg372uresrncvjhzwsx3zwm
QPACE: Quantum Chromodynamics Parallel Computing on the Cell Broadband Engine
2008
Computing in science & engineering (Print)
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
Application-driven computers for Lattice Gauge Theory simulations have often been based on system-on-chip designs, but the development costs can be prohibitive for academic project budgets. ...
An alternative approach uses compute nodes based on a commercial processor tightly coupled to a custom-designed network processor. ...
Our project's primary goal is to make a vast amount of computing power available for LQCD research. ...
doi:10.1109/mcse.2008.153
fatcat:2payrontpfhuhgyywk3b2ozbga
Lattice QCD Applications on QPACE
[article]
2011
arXiv
pre-print
Preserved Fulltext
The Internet Archive has a preservation copy of this work in our general collections.
The file type is application/pdf.
The compute power of the processor is provided by 8 Synergistic Processing Units. Making efficient use of these accelerator cores in scientific applications is challenging. ...
In this paper we describe our strategies for porting applications to the QPACE architecture and report on performance numbers. ...
Acknowledgments We thank all members of the QPACE team for their hard and creative work that laid the groundwork for the studies reported on in this paper. ...
arXiv:1103.1363v1
fatcat:7aw6glmrq5hylhinsaeyt7mcb4
Lattice QCD Applications on QPACE
2011
Procedia Computer Science
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2018; you can also visit the original URL.
The file type is application/pdf.
The compute power of the processor is provided by 8 Synergistic Processing Units. Making efficient use of these accelerator cores in scientific applications is challenging. ...
In this paper we describe our strategies for porting applications to the QPACE architecture and report on performance numbers. ...
Acknowledgments We thank all members of the QPACE team for their hard and creative work that laid the groundwork for the studies reported on in this paper. ...
doi:10.1016/j.procs.2011.04.089
fatcat:3swjjkhh7bcgxnomtjcwid5ili
GRAPE-DR
2007
Proceedings of the 2007 ACM/IEEE conference on Supercomputing - SC '07
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
simulations such as astrophysical many-body simulations and molecular-dynamics simulations, quantum chemistry calculations, various applications which requires dense matrix operations, and many other compute-intensive ...
Acknowledgments The authors thank Toshiyuki Fukushige, Yoko Funato, Piet Hut, Toshikazu Ebisuzaki, and Makoto Taiji for discussions related to this work. ...
This research is partially supported by the Special Coordination Fund for Promoting Science and Technology (GRAPE-DR project), Ministry of Education, Culture, Sports, Science and Technology, Japan. ...
doi:10.1145/1362622.1362647
dblp:conf/sc/MakinoHI07
fatcat:5w5ogh4po5bdxp4uzi4aif3ese
AN ALGORITHMIC APPROACH TO QUANTUM FIELD THEORY
2006
International Journal of Modern Physics A
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2018; you can also visit the original URL.
The file type is application/pdf.
Other Versions
We also provide examples of typical results from lattice QCD computations for quantities of phenomenological interest. ...
The lattice formulation provides a way to regularize, define and compute the Path Integral in a Quantum Field Theory. ...
Acknowledgements I wish to acknowledge the Fermilab theory group for many years of fruitful collaboration and specifically thank Paul Mackenzie for his comments about this manuscript. ...
doi:10.1142/s0217751x06028965
fatcat:jnpdjqtcu5fg3hsr2ksg5y77xu
The finite-temperature phase structure of lattice QCD with twisted-mass Wilson fermions
[article]
2008
arXiv
pre-print
Preserved Fulltext
The Internet Archive has a preservation copy of this work in our general collections.
The file type is application/pdf.
Other Versions
We identify the finite temperature transition/crossover for a non-vanishing twisted-mass parameter in the neighbourhood of the zero-temperature critical line at sufficiently high β. ...
We report progress in our exploration of the finite-temperature phase structure of two-flavour lattice QCD with twisted-mass Wilson fermions and a tree-level Symanzik-improved gauge action for a temporal ...
Most simulations have been done at the apeNEXT in Rome and DESY-Zeuthen. This work has been supported in part by the DFG Sonderforschungsbereich/Transregio SFB/TR9-03. O. P. and L. ...
arXiv:0809.5228v3
fatcat:xedizr4ylbbmhmymusxgsd4n3i
Code development (not only) for NSPT
2014
Proceedings of 31st International Symposium on Lattice Field Theory LATTICE 2013 — PoS(LATTICE 2013)
unpublished
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2019; you can also visit the original URL.
The file type is application/pdf.
The key point for an efficient solution is a framework in which everything is computed order by order. ...
We present "parmalgt", a general C++ framework mainly intended for NSPT computations that we are currently developing. ...
The first implementation was written in the TAO language for the apeNEXT machine. In this version lattice size and parallelization strategy were deeply coded in the program. ...
doi:10.22323/1.187.0418
fatcat:wm244fvxb5hc3ixo2tqujg3v4y
The finite-temperature phase structure of lattice QCD with twisted-mass Wilson fermions
2009
Proceedings of The XXVI International Symposium on Lattice Field Theory — PoS(LATTICE 2008)
unpublished
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2018; you can also visit the original URL.
The file type is application/pdf.
We identify the finite temperature transition/crossover for a non-vanishing twisted-mass parameter in the neighbourhood of the zerotemperature critical line at sufficiently high β . ...
We report progress in our exploration of the finite-temperature phase structure of two-flavour lattice QCD with twisted-mass Wilson fermions and a tree-level Symanzik-improved gauge action for a temporal ...
Most simulations have been done at the apeNEXT in Rome and DESY-Zeuthen. This work has been supported in part by the DFG Sonderforschungsbereich/Transregio SFB/TR9-03. O. P. and L. ...
doi:10.22323/1.066.0206
fatcat:whfx2x556zdwxbkvkxz3nov4qq
Investigation of hadron matter using lattice QCD and implementation of lattice QCD applications on heterogeneous multicore acceleration processors
2012
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2020; you can also visit the original URL.
The file type is application/pdf.
Lattice QCD simulations tend to be extremely expensive, reaching the need for petaflop computing and beyond, a regime of computing power we just reach today. ...
In this work new design concepts were developed for an active library (QDP++) harnessing the compute power of a heterogeneous multicore processor (IBM PowerXCell 8i processor). ...
Among those, the apeNEXT and QCDOC machines [141, 142] and the latest application-optimised HPC machine, QPACE [143] , a new type of massively parallel computer. ...
doi:10.5283/epub.22098
fatcat:h5r4i45ggrc3limagysh7lmyse