Search results for "Distributed File System"

showing 3 items of 3 documents

GekkoFS - A Temporary Distributed File System for HPC Applications

2018

We present GekkoFS, a temporary, highly-scalable burst buffer file system which has been specifically optimized for new access patterns of data-intensive High-Performance Computing (HPC) applications. The file system provides relaxed POSIX semantics, only offering features which are actually required by most (not all) applications. It is able to provide scalable I/O performance and reaches millions of metadata operations already for a small number of nodes, significantly outperforming the capabilities of general-purpose parallel file systems. The work has been funded by the German Research Foundation (DFG) through the ADA-FS project as part of the Priority Programme 1648. It is also support…

File system020203 distributed computingBurst buffersParallel processing (Electronic computers)Computer scienceProcessament en paral·lel (Ordinadors)020207 software engineering02 engineering and technologyBuffer storage (Computer science)computer.software_genreData structureDistributed file systemsMetadataParallel processing (DSP implementation)POSIXServerScalabilityHPC0202 electrical engineering electronic engineering information engineeringOperating systemHigh performance computingDistributed File System:Informàtica::Arquitectura de computadors::Arquitectures paral·leles [Àrees temàtiques de la UPC]computerCàlcul intensiu (Informàtica)2018 IEEE International Conference on Cluster Computing (CLUSTER)
researchProduct

GekkoFS — A Temporary Burst Buffer File System for HPC Applications

2020

Many scientific fields increasingly use high-performance computing (HPC) to process and analyze massive amounts of experimental data while storage systems in today’s HPC environments have to cope with new access patterns. These patterns include many metadata operations, small I/O requests, or randomized file I/O, while general-purpose parallel file systems have been optimized for sequential shared access to large files. Burst buffer file systems create a separate file system that applications can use to store temporary data. They aggregate node-local storage available within the compute nodes or use dedicated SSD clusters and offer a peak bandwidth higher than that of the backend parallel f…

Information storage and retrieval systemsPOSIXFile systemBurst buffersComputer scienceProcess (computing)computer.software_genreDistributed file systemsComputer Science ApplicationsTheoretical Computer ScienceMetadataInformació -- Sistemes d'emmagatzematge i recuperacióComputational Theory and MathematicsHardware and ArchitecturePOSIXHPC:Informàtica::Sistemes d'informació::Emmagatzematge i recuperació de la informació [Àrees temàtiques de la UPC]ScalabilityOperating systemBandwidth (computing)High performance computingIsolation (database systems)Càlcul intensiu (Informàtica)computerSoftwareJournal of Computer Science and Technology
researchProduct

Generalized Interaction-Free Evolutions

2015

A thorough analysis of the evolutions of bipartite systems characterized by the \lq effective absence\rq\, of interaction between the two subsystems is reported. First, the connection between the concepts underlying Interaction-Free Evolutions (IFE) and Decoherence-Free Subspaces (DFS) is explored, showing intricate relations between these concepts. Second, starting from this analysis and inspired by a generalization of DFS already known in the literature, we introduce the notion of generalized IFE (GIFE), also providing a useful characterization that allows to develop a general scheme for finding GIFE states.

PhysicsQuantum PhysicsGeneralizationFOS: Physical sciencesCharacterization (mathematics)01 natural sciencesLinear subspaceQuantum mechanicSettore FIS/03 - Fisica Della Materia010305 fluids & plasmasConnection (mathematics)AlgebraEntanglementScheme (mathematics)0103 physical sciencesBipartite graph010306 general physicsDistributed File SystemQuantum Physics (quant-ph)
researchProduct