Norman Christ

Norman Howard Christ (/ˈkrɪst/; born 22 December 1943 in Pittsburgh) is a physicist and a professor at Columbia University, where he holds the Ephraim Gildor Professorship of Computational Theoretical Physics. He is notable for his research in Lattice QCD.

Norman Christ
Born (1943-11-22) November 22, 1943
Pittsburgh, Pennsylvania
NationalityUnited States
Alma materColumbia University
AwardsSloan Fellowship (1967)
Gordon Bell Prize (1998)
Scientific career
FieldsPhysicist
InstitutionsColumbia University
Princeton University
Doctoral advisorTsung-Dao Lee
Doctoral studentsEmanuel Derman
Yuefan Deng
Adrian Kaehler

Work and life

Norman Christ graduated Salutatorian with a B.A. in physics from Columbia in 1965 and received his Ph.D. from the same institution in 1966 under Nobel Laureate Tsung-Dao Lee. Christ became a professor at Columbia after graduation, and has remained there since. He is also a leading researcher at Brookhaven National Laboratory.

Norman's research lies in the fields of Lattice QCD, which simulates strong interaction among quarks and gluons with monte carlo method. He worked on various topic in this field, such as the phenomena of quark confinement, the spontaneous chiral magnetization of the vacuum and the quark-gluon plasma. In recent years, he is mostly interested in the Kaon physics, such as the kaon mass difference, the rare kaon decay and most importantly the direct and indirect CP violation parameter.

Supercomputer and physics

Lattice QCD is extremely computational intensive. The simulation is usually performed on the state-of-the-art supercomputer. Instead of purchasing commercial machines, Norman chose to build supercomputers with his colleagues at Columbia University. The lattice group at Columbia pioneered the construction of highly parallel machines dedicated to QCD calculations in 1982, and produced a series of three successful machines between 1985 and 1989 which were used to obtain a variety of new results in QCD. During this period there were also a number of other dedicated computer projects with similar goals carried out in Italy (the APE Project), Japan (QCD-PAX), and Fermilab (ACP-MAPS) and IBM (GF11) in the U. S.

In 1993, Norman started the QCDSP project, aiming to build a Teraflops supercomputer. The first working hardware was available in August 1995, and a working 6 Gflops machine in July 1996. A 400 Gflops and another 600 Gflops machine are completed in 1998. Norman and his collaborators won the prestigious Gordon Bell Prize in 1998 for designing the QCDSP supercomputer. The next project led by Norman was the QCDOC supercomputers. The computers were designed and built jointly by University of Edinburgh, Columbia University, the RIKEN BNL Brookhaven Research Center and IBM. The target was to build a massively parallel supercomputer able to peak at 10 Tflops with sustained power at 50% capacity. At the end of 2005, there were three QCDOCs in service each reaching 10 Tflops peak operation. QCDOC is considered the precursor of IBM's Blue Gene L machine. After QCDOC, although Norman still collaborated closely with IBM in developing the Blue Gene supercomputers, he was no longer playing a leading role in these projects.

Publications
gollark: If there are significant externalities involved taxing bottled water based on that would be reasonable.
gollark: Blame people's preferences I guess, they're kind of stupid.
gollark: Clearly, people find conveniently getting water in a form they can carry better than just carrying a reusable water bottle around somehow.
gollark: Since most restaurants will let you get a glass or whatever of free tap water here.
gollark: Bottled water is really weird. I figure you're paying for convenience mostly.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.