Luigi Scorzato
(ECT*)
18/06/2010, 14:30
Algorithms and machines
I will report on the status of the AuroraScience project ( web.infn.it/aurorascience )
Andrea Nobile
(uni regensburg)
18/06/2010, 14:50
Algorithms and machines
I present the implementation of a parallel solver currently used on QPACE for N_f=2 flavours of Clover fermions.
I choose the mixed-precision Schwarz preconditioned FGCR algorithm in order to satisfy network bandwidth and latency constraints, to make efficient use of the multicore parallelism and on-chip memory, and to achieve flexibility in the choice of lattice sizes.
I present benchmarks...
Roberto AMMENDOLA
(INFN Roma Tor Vergata)
18/06/2010, 15:10
Algorithms and machines
apeNET is a seven-years old project aimed at the acceleration of numerical simulations, mainly Lattice QCD, on commodity clusters of O(1000) nodes using a custom-designed 3D toroidal interconnect. In this paper we report on apeNET+, the new generation of our network adapters supporting wire speeds up to 34 Gbit/s per link, PCIe x8 gen 2, improved hardware RDMA support and enhanced...
Ronald Babich
(Boston University)
18/06/2010, 15:30
Algorithms and machines
In recent years, graphics processing units (GPUs) have gained prominence as general-purpose computing devices that offer an order of magnitude improvement in price/performance for a range of applications, including lattice gauge theory. In this contribution, an optimized Dirac solver for Wilson and clover-improved Wilson fermions is described. We discuss strategies for achieving high...
Steven Gottlieb Gottlieb
(Indiana University)
18/06/2010, 15:50
Algorithms and machines
We have been extending the QUDA GPU code developed at Boston University
to include the case of improved staggered quarks. Improved staggered
quarks such as asqtad and HISQ require both first and third nearest
neighbor terms in the Dirac operator. We call the corresponding
links fatlinks and longlinks. The fatlinks are not unitary and staggered
phases are included in the links, so link...
