WArctic Region Supercomputing CenterWArgonne National LaboratoryWAtlas Computer LaboratoryWBarcelona Supercomputing CenterWCornell University Center for Advanced ComputingWCESGAWGeophysical Fluid Dynamics LaboratoryWHigh Performance Computing Center, StuttgartWInterdisciplinary Centre for Mathematical and Computational ModellingWIrish Centre for High-End ComputingWForschungszentrum JülichWKhan Research LaboratoriesWLawrence Livermore National LaboratoryWLeibniz-RechenzentrumWNational Digital Library ProgramWLos Alamos National LaboratoryWMassachusetts Green High Performance Computing CenterWNASA Advanced Supercomputing DivisionWNational Center for Atmospheric ResearchWNational Center for Supercomputing ApplicationsWNational Computational InfrastructureWNational Computer Center for Higher Education (France)WNational Energy Research Scientific Computing CenterWNational Security AgencyWNational Security Operations CenterWNational Supercomputer Center in GuangzhouWOak Ridge National LaboratoryWOhio Supercomputer CenterWPakistan Institute of Nuclear Science & TechnologyWSan Diego Supercomputer CenterWSandia National LaboratoriesWSchimmel-Conrades Science CenterWSciNet ConsortiumWSpecial Communications Service of RussiaWSupercomputing and Visualization Center of MadridWSupercomputing in ChinaWSupercomputing in EuropeWSupercomputing in JapanWSupercomputing in PakistanWThomas J. Watson Research CenterWTOP500WUniversity of GroningenWUtah Data Center