PPT-Shared File Performance Improvements

LDLM Lock Ahead Patrick Farrell pafcraycom Lock Ahead Quick Refresher Let user space request LDLM extent locks with an ioctl Allows optimizing for various IO patterns by avoiding unnecessary LDLM lock contention. In collaboration with Jeremy Logan, Postdoctoral Research Associate, ORNL. . Improving the Performance of MPI Parallel I/O. Outline. Issues in providing high-performance parallel I/O in general.. Issues with MPI-IO in particular. . Aditya . Raigarhia. and Ashish . Gehani. Stanford and SRI. ACM Symposium on Applied Computing (SAC). Sierre. , Switzerland, March 22-26, 2010. Introduction (1 of 2). Developing in-kernel file systems challenging. Mark Gebhart. 1,2 . Stephen W. Keckler. 1,2. Brucek Khailany. 2. Ronny Krashinsky. 2. . William J. Dally. 2,3. 1. The University of Texas at Austin . 2. NVIDIA . 3. Stanford University. Methodology. 1. 2. Agenda. Customer Trend. Performance Enhancements. zEC12 . Synergy. Application . Compatibility. Utility Enhancements. Big . Data Integration. Migration to DB2 11. . 2. 3. Customer Trend. Proliferation of mobile and other network-connected devices is . Priya Bhat, Yonggang Liu, Jing Qin. Content. 1. . Ceph. Architecture. 2. . Ceph. Components. 3. . Performance Evaluation. 4. . Ceph. Demo. 5. Conclusion. Ceph Architecture. What is Ceph?. Ceph is a distributed file system that provides excellent performance, scalability and reliability.. MRP-862. Nathan Rutman (nathan_rutman@xyratex.com). Multiple clients write to multiple ranges within the same file. Scientific apps mostly - simulations. Wide striping. Different than FPP. Locking model. 1. Copyright © 2010 The HDF Group. All Rights Reserved. Quincey Koziol. The HDF Group. koziol@hdfgroup.org. 2. Goal is to be invisible: get same performance with HDF5 as with MPI I/O. Project with. Top Trump Cards. For each of the 7 . “High Performance Materials” . you need to know:. Properties. Examples of use. Reasons for use. Improvements on traditional materials. The cards can be used for revision, testing each other in pairs, and playing games to help you remember the info. What is Multiprocessing?. Enables several programs to run concurrently. Coordinated processing of Programs by more than one processor. Use of 2 or more CPUs within a single computer system. Ability of a system to support more than one processor and to allocate tasks between them. Gareth James Hani Adhami. Senior Consultant Senior Consultant. WSV423. Agenda. Overview of Cluster Shared Volumes (CSV). What’s changed in Windows Server 2012. New CSV Architecture. P. erformance Enhancements. Fourie Joubert. NFS. NFS is the . N. etwork . F. ile System. It allows Linux systems to share a file system, or to mount a shared file system. The NFS client. Mounting an NFS file system that is being shared by another computer. History of Performance Contracting. Presented by:. Mark G. Stanton PE, CEM, EBCP. Chief Capital Projects Officer. Performance Contracting History. 1991. WCSD was the First Public Agency in Nevada to enter into a “Shared Savings” agreement. Don’t make me ask my own questions…. Why is the sky blue?. It’s the most easily reflected “frequency” of light by oxygen and nitrogen that we can see. Molecules in the air randomly reflect or scatter blue light from the sun because it travels in shorter smaller waves.. x0000x0000 x/Attxachexd /xBottxom x/BBoxx 6x572x93 3x499x5 56x258x78 6x056x16 x/Subxtypex /Foxoterx /Tyxpe /xPagixnatixon 0x/Attxachexd /xBottxom x/BBoxx 6x572x93 3x499x5 56x258x78 6x056x16 x/Subxtype