| Susan J. LoVerso, Marshall Isman, Andy Nanopoulos, William Nesheim, Ewan D. Milne, and Richard Wheeler. sfs: A parallel file system for the CM-5. In Proceedings of the 1993 Summer USENIX Technical Conference, pages 291--305, 1993. |
....this number will vary depending on access patterns [11, 12] 3.1. 3 Kernel Supported File Systems The last and most complex implementation is one which is built into the kernel of the machine or is given direct access to devices in some similar manner such as the sfs file system for the CM 5 [27]. There are a number of advantages to this implementation choice. Usually implementation in the kernel allows existing programs to interact with the new file system without any modification or recompilation. Access to kernel data structures and devices avoids extra data copies that can affect ....
Susan J. LoVerso, Marshall Isman, Andy Nanopoulos, William Nesheim, Ewan D. Milne, and Richard Wheeler. sfs: A parallel file system for the CM-5. In Proceedings of the 1993.
....I O subspace is attractive if a lot of the communication between the array and the outside world happens through the file system. An example is an application that performs file I O; I O with the outside world is done by having other systems access the file system of the distributed memory machine [13]. In other cases it is important that applications on the parallel system have high speed access directly to the network. Examples are when the distributed memory machine is used as a node in a loosely coupled distributed system, or if it uses a network file system. However, if we consider the ....
Susan LoVerso, Marshall Isman, Andy Nanopoulos, William Nesheim, Ewan D. Milne, and Richard Wheeler. sfs: A parallel file system for the CM-5. In Proceedings of the Summer 1993.
....file system. It was written for the IPSC family of parallel machines. Its successor, PFS, is similar and was written for the Paragon [18] Thinking Machines developed a file system called sfs, which supports data parallel I O on CM 5 through data parallel languages such as CMF, C , or Lisp [19]. PIOFS, a parallel file system for IBM s SP2, allows users and applications to interact with it exactly as they would interact with AIX file system [20] Indeed, the PIOFS is mounted on each of the nodes of the SP 2 using AIX s standard Virtual File System interface. Bridge was one of the ....
Susan J et al. sfs: A Parallel File System for the CM-5. In Proceedings of the 1993 Summer USENIX Conference, 1993.
....Parallel File Systems We now turn our attention to the large body of work in parallel file systems. Most systems have focussed on extracting high performance from a set of uniform disks, including PPFS [65] Bridge [46] Panda [110] Galley [89] Vesta [36] Swift [28] CFS [90] SFS [84], the SIO specification [15] and SPIFFI [50] Some common features include scatter gather transfers, asynchronous interfaces, layout control, prefetching, and caching support at the client or server or both. Most of these parallel file systems stripe data naively across the set disks in the I O ....
....are no ordering constraints across collections, none need be enforced. If applications wish to impose a strict ordering across collections, that option is also available to them. In the current River implementation, the parallel collection meta data is stored in an NFSbacked file, as suggested in [79, 84]. Because NFS provides no consistency guarantees under concurrent access, all parallel meta data operations are serialized through a single process of the application. CHAPTER 4. RIVER DESIGN AND IMPLEMENTATION: AN OVERVIEW 34 These operations are rare, because they only occur when a file is being ....
Susan J. LoVerso, Marshall Isman, Andy Nanopoulos, William Nesheim, Ewan D. Milne, and Richard Wheeler. sfs: A parallel file system for the CM-5. In Proceedings of the 1993 Summer USENIX Technical Conference, pages 291--305, 1993.
.... software [8] Recent studies show that various simple partitioning schemes do indeed account for most of observed parallel I O patterns [24] In addition to the commercial offerings (IBM SP2 PIOFS [6] Intel iPSC CFS [25, 27] and Paragon PFS [11, 28] nCUBE [8] and Thinking Machines CM 5 sfs [2, 20]) there has been a recent flurry of activity in the research community. PIOUS [22, 23] and PETSc Chameleon I O [14] are both widely available nonproprietary portable parallel I O interfaces. PIOUS is a PVM based parallel file interface. Files can be declustered across disks in a round robin ....
Susan J. LoVerso, Marshall Isman, Andy Nanopoulos, William Nesheim, Ewan D. Milne, and Richard Wheeler. sfs: A parallel file system for the CM-5. In Proceedings of the 1993 Summer USENIX Conference, pages 291--305, 1993.
....the policies used may change as the programmer optimizes I O performance or ports the application to a new platform with different I O characteristics. 3 Parallel I O interfaces Previous research has examined parallel I O at several levels. Some have developed complete parallel files systems [10, 19, 4, 8]. Others have developed servers or runtime libraries for optimizing I O performance that run on multiplesystems [25, 22, 27, 11, 3, 12] Some research has concentrated on developing specific techniques to improve I O performance [15, 7] that could be incorporated into larger systems. Research has ....
Susan J. LoVerso, Marshall Isman, Andy Nanopoulos, William Nesheim, Ewan D. Milne, and Richard Wheeler. sfs: A parallel file system for the CM-5. In Proceedings of the 1993 Summer USENIX Conference, pages 291--305, 1993.
....the choice of policies used by the file system can be greatly simplified if the application can identify its expected demands in advance. Most researchers studying file system issues for parallel supercomputers have recognized the need for cooperation between the application and the file system [26, 34, 49, 68, 83, 103]. Our approach differs from others in that HFS gives the application the ability to explicitly customize the implementation of a file to conform to its specific requirements. We believe that this extra level of control is important, given the current lack of understanding of the requirements of ....
....many applications memory disk locality can be effectively exploited by file system software, and hence the additional cost of a parallel network is wasted for these applications. The majority of the current large scale systems (including the Vulcan, SP2, iPSC 2, iPSC 860, Paragon, CM 2 and CM 5 [26, 39, 83]) have separate I O and compute nodes. This has the advantage that: 1) the resources of the nodes (e.g. memory for caching, or special hardware accelerators for computing parity or compression) can be tuned to their function, 2) I O requests do not interfere with another application s ....
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Susan J. LoVerso, Marshall Isman, Andy Nanopoulos, William Nesheim, Ewan D. Milne, and Richard Wheeler. sfs: A parallel file system for the CM-5. In Proceedings of the 1993 Summer Usenix Conference, pages 291--305, 1993.
....file system. It was written for the IPSC family of parallel machines. Its successor, PFS, is similar and was written for the Paragon [18] Thinking Machines developed a file system called sfs, which supports data parallel I O on CM 5 through data parallel languages such as CMF, C , or Lisp [19]. PIOFS, a parallel file system for IBM s SP2, allows users and applications to interact with it exactly as they would interact with AIX file system [20] Indeed, the PIOFS is mounted on each of the nodes of the SP 2 using AIX s standard Virtual File System interface. Bridge was one of the ....
Susan J et al. sfs: A Parallel File System for the CM-5. In Proceedings of the 1993 Summer USENIX Conference, 1993.
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Susan J. LoVerso, Marshall Isman, Andy Nanopoulos, William Nesheim, Ewan D. Milne, and Richard Wheeler. sfs: A parallel file system for the CM-5. In Proceedings of the 1993 Summer USENIX Technical Conference, pages 291--305, 1993.
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Susan J. LoVerso, Marshall Isman, Andy Nanopoulos, William Nesheim, Ewan D. Milne, and Richard Wheeler. sfs: A parallel file system for the CM-5. In Proceedings of the 1993 Summer USENIX Conference, pages 291--305, 1993.
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Susan J. LoVerso, Marshall Isman, Andy Nanopoulos, William Nesheim, Ewan D. Milne, and Richard Wheeler. sfs: A parallel file system for the CM-5. In Proceedings of the 1993 Summer USENIX Conference, pages 291--305, 1993.
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Susan J. LoVerso, Marshall Isman, Andy Nanopoulos, William Nesheim, Ewan D. Milne, and Richard Wheeler. sfs: A parallel file system for the CM-5. In Proceedings of the 1993 Summer USENIX Conference, pages 291--305, 1993.
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Susan J. LoVerso, Marshall Isman, Andy Nanopoulos, William Nesheim, Ewan D. Milne, and Richard Wheeler. sfs: A parallel file system for the CM-5. In Proceedings of the 1993 Summer USENIX Conference, pages 291--305, 1993.
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Susan J. LoVerso, Marshall Isman, Andy Nanopoulos, William Nesheim, Ewan D. Milne, and Richard Wheeler. sfs: A parallel file system for the CM-5. In Proceedings of the 1993 Summer USENIX Conference, pages 291--305, 1993.
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Susan J. LoVerso, Marshall Isman, Andy Nanopoulos, William Nesheim, Ewan D. Milne, and Richard Wheeler. sfs: A parallel file system for the CM-5. In Proceedings of the 1993 Summer USENIX Conference, pages 291--305, 1993.
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Susan J. LoVerso, Marshall Isman, Andy Nanopoulos, William Nesheim, Ewan D. Milne, and Richard Wheeler. sfs: A parallel file system for the CM-5. In Proceedings of the 1993 Summer USENIX Conference, pages 291--305, 1993.
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Susan J. LoVerso, Marshall Isman, Andy Nanopoulos, William Nesheim, Ewan D. Milne, and Richard Wheeler. sfs: A parallel file system for the CM-5. In Proceedings of the 1993 Summer USENIX Conference, pages 291--305, 1993.
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Susan J. LoVerso, Marshall Isman, Andy Nanopoulos, William Nesheim, Ewan D. Milne, and Richard Wheeler. sfs: A parallel file system for the CM-5. In Proceedings of the 1993 Summer Usenix Conference, 1993. To appear.
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Susan J. LoVerso, Marshall Isman, Andy Nanopoulos, William Nesheim, Ewan D. Milne, and Richard Wheeler. sfs: A parallel file system for the CM-5. In Proceedings of the 1993 Summer USENIX Conference, pages 291--305, 1993.
No context found.
Susan J. LoVerso, Marshall Isman, Andy Nanopoulos, William Nesheim, Ewan D. Milne, and Richard Wheeler. sfs: A parallel file system for the CM-5. In Proceedings of the 1993 Summer USENIX Conference, pages 291--305, 1993.
No context found.
Susan J. LoVerso, Marshall Isman, Andy Nanopoulos, William Nesheim, Ewan D. Milne, and Richard Wheeler. sfs: A parallel file system for the CM-5. In Proceedings of the 1993 Summer Usenix Conference, 1993. To appear.
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