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Ursa Minor: Versatile Cluster-based Storage (CMU-PDL-05-104)

Michael Abd-El-Malek, William V. Courtright, Chuck Cranor, Gregory R. Ganger, James Hendricks, Andrew J. Klosterman, Michael Mesnier, Manish Prasad, Brandon Salmon, Raja R. Sambasivan, Shafeeq Sinnamohideen, John D. Strunk (+3 others)
Ursa Minor is a cluster-based storage system that allows data-specific selection of, and on-line changes to, encoding schemes and fault models.  ...  A versatile storage system allows them to be matched to access patterns, reliability requirements, and cost goals on a per-data item basis.  ...  This material is based on research sponsored in part by the National Science Foundation, via grant #CNS-0326453, by the Air Force Research Laboratory, under agreement number F49620-01-1-0433, by the Army  ... 
doi:10.1184/r1/6619859.v1 fatcat:ewjovjhmc5czhaopecdf7q44fy


Sage A. Weil, Andrew W. Leung, Scott A. Brandt, Carlos Maltzahn
2007 Proceedings of the 2nd international workshop on Petascale data storage held in conjunction with Supercomputing '07 - PDSW '07  
Brick and object-based storage architectures have emerged as a means of improving the scalability of storage clusters.  ...  We present the design and implementation of RADOS, a reliable object storage service that can scales to many thousands of devices by leveraging the intelligence present in individual storage nodes.  ...  Department of Energy under award DE-FC02-06ER25768, the National Science Foundation under award CCF-0621463, the Institute for Scalable Scientific Data Management, and by the industrial sponsors of the Storage  ... 
doi:10.1145/1374596.1374606 dblp:conf/sc/WeilLBM07 fatcat:zomrs5lr6jd2hmbjt33gxvuj7q

Visualizing Request-Flow Comparison to Aid Performance Diagnosis in Distributed Systems

Raja R. Sambasivan, Ilari Shafer, Michelle L. Mazurek, Gregory R. Ganger
2013 IEEE Transactions on Visualization and Computer Graphics  
the problem to a small number of potential culprits, but e ective visualizations are needed to help developers understand and explore their results. is paper compares side-by-side, di , and animation-based  ...  Ursa Minor: Versatile cluster-based storage. In Proc. FAST, . , [ ] K. Andrews, M. Wohlfahrt, and G. Wurzinger. Visual graph comparison. In Proc. IV, .[ ] D.Archambault, H. Purchase, and B. Pinaud.  ...  As our example tasks come from Ursa Minor, we recruited the seven Ursa Minor developers to whom we had access as expert participants.  ... 
doi:10.1109/tvcg.2013.233 pmid:24051813 fatcat:euccs3ezg5ayrbxpl7oo3ng54y


Eno Thereska, Brandon Salmon, John Strunk, Matthew Wachs, Michael Abd-El-Malek, Julio Lopez, Gregory R. Ganger
2006 Proceedings of the joint international conference on Measurement and modeling of computer systems - SIGMETRICS '06/Performance '06  
This paper reports on our experience building and using end-to-end tracing as an on-line monitoring tool in a distributed storage system.  ...  IMPLEMENTATION IN URSA MINOR We have designed and implemented a storage system, Ursa Minor, to target research problems in system management.  ...  One realization from this work, is that, in a storage system like Ursa Minor, it is possible to predict how much CPU a client will consume from its requests' size and rate alone.  ... 
doi:10.1145/1140277.1140280 dblp:conf/sigmetrics/ThereskaSSWALG06 fatcat:p4xfqmpaxrddnb4tz7xow3e5v4

A Workflow-Aware Storage System: An Opportunity Study

Emalayan Vairavanathan, Samer Al-Kiswany, Lauro Beltrão Costa, Zhao Zhang, Daniel S. Katz, Michael Wilde, Matei Ripeanu
2012 2012 12th IEEE/ACM International Symposium on Cluster, Cloud and Grid Computing (ccgrid 2012)  
Two observations make us believe such storage system is crucial to efficiently support workflow-based applications: First, workflows generate irregular and application-dependent data access patterns.  ...  of the storage system.  ...  In the same vein, Ursa Minor [24] offers deployment-time configurability to meet application access patterns and reliability requirements.  ... 
doi:10.1109/ccgrid.2012.109 dblp:conf/ccgrid/VairavanathanACZKWR12 fatcat:fxhrvs3r6fcl3i2rbj7ehl2tvm

Strata: scalable high-performance storage on virtualized non-volatile memory

Brendan Cully, Jake Wires, Dutch T. Meyer, Kevin Jamieson, Keir Fraser, Tim Deegan, Daniel Stodden, Geoffrey Lefebvre, Daniel Ferstay, Andrew Warfield
2014 USENIX Conference on File and Storage Technologies  
Protocol Virtualization Layer ( §6) Scalable Protocol Presentation Responsibility: Allow the transparently scalable implementation of traditional IP-and Ethernet-based storage protocols.  ...  Strata is a commercial storage system designed around the high performance density of PCIe flash storage.  ...  Our agnosticism to any particular protocol is similar to approach used by Ursa Minor [16] , which also boasted a versatile client library protocol to share access to a cluster of magnetic disks.  ... 
dblp:conf/fast/CullyWMJFDSLFW14 fatcat:xk2i3nvrsfd6xcz5np77ehtcyu

Comparative Analysis of TDP-43-Controlled RNA Processing in Neuronal and Muscle Cells in Mouse and Human

Urša Šušnjar
Based on this, we investigated functional consequences of TDP-43 loss in either cell-type, linking TDP-43 pathology to previously described hallmarks of neuro- and myodegeneration.  ...  B PCA plots show clustering of different brain regions based on inclusion levels (PSI) of six TDP-43-regulated alternative exons.  ...  These are based on two main approaches: isoform-based and count-based methods.  ... 
doi:10.21954/ fatcat:l7slqgsdbbadvbk5uqfytf3z5u

FlexFS: Transparent resilience for GRID storage resources

Konstantinos Tsakalozos, Vassil Kriakov, Alex Delis
2009 2009 International Symposium on Autonomous Decentralized Systems  
FlexFS employs a number of methods that facilitate the automated storage and efficient retrieval of the blocks in order to provide I/O throughput similar to that of local hard disks, all in the face of  ...  Similarly, erasure codes is an option for adding fault tolerance in the Ursa Minor [15] storage system.  ...  File reconstruction is accomplished by simultaneously fetching packets from multiple storage nodes that may be either local or remote to a cluster.  ... 
doi:10.1109/isads.2009.5207356 dblp:conf/isads/TsakalozosKD09 fatcat:prf2s2tm45fjjdlvawrferwjve

Informed data distribution selection in a self-predicting storage system

E. Thereska, M. Abd-El-Malek, J.J. Wylie, D. Narayanan, G.R. Ganger
2006 IEEE International Conference on Autonomic Computing  
This paper describes and evaluates support for self-prediction in a cluster-based storage system and its application to What...if questions about data distribution selection.  ...  Versatile cluster-based storage Ursa Minor is a cluster-based storage system that provides data distribution versatility (i.e., a wide range of options within a single system) and the ability to change  ...  The ATI is integrated in every storage-node and the Ursa Minor client library.  ... 
doi:10.1109/icac.2006.1662398 fatcat:ttrgbxqgbjcupcsb5rdg2zzxeu

Enabling What-if Explorations in Systems (CMU-PDL-07-103)

Eno Thereska
As another example, lack of good measurement information in a distributed system can be a show-stopper for models based on queuing analysis.  ...  ., database and storage systems). It identifies ways to build systems to support use of mathematical models and addresses fundamental show-stoppers that keep models from being useful in practice.  ...  Stardust's implementation Brief introduction to Ursa Minor We have designed and implemented a cluster-based storage system, Ursa Minor, to target research problems in system management.  ... 
doi:10.1184/r1/6619574.v1 fatcat:gc4rkbqqyfh5flsjk4zirtzaaq


Vincy Jeba, Shanthi, Parameswari
2016 unpublished
We study the problem of large-scale distributed file system, which support parallel access to multiple storage devices.  ...  The existing Kerberos-based protocol has a number of limitations: scalability of the protocol is restricted, it provide less forward secrecy, and leads to key escrow.  ...  Ganger proposed a concep of cluster based storage system in Ursa [2] .  ... 

Diagnosing performance changes in distributed systems by comparing request flows

Raja R. Sambasivan
Minor distributed storage service and in select Google services.  ...  various distributed systems, this dissertation describes its implementation in a tool called Spectroscope and describes how Spectroscope was used to diagnose real, previously unsolved problems in the Ursa  ...  Ursa minor: versatile cluster-based storage. In FAST' : Proceedings of the th USENIX Conference on File and Storage Technologies, .  ... 
doi:10.1184/r1/6715934.v1 fatcat:yetaf5ssz5hhtdrrqiyudy2qci

Using Utility Functions to Control a Distributed Storage System (CMU-PDL-08-102)

John D. Strunk
This dissertation goes beyond goal-based requirements by allowing the system administrator to use a utility function to specify his objectives.  ...  This work develops a prototype storage provisioning tool that uses an administrator-specified utility function to generate cost-effective storage configurations.  ...  This material is based on research sponsored in part by the National  ... 
doi:10.1184/r1/6619877.v1 fatcat:xzyugxx5xjaptc3kxrjdzyxpea

A Read/Write Protocol Family for Versatile Storage Infrastructures (CMU-PDL-05-108)

Jay J. Wylie
Measurements of PASIS, a prototype storage system based on the R/WPF, demonstrate its versatility. These measurements show that the R/W-PF also provides fault-scalability.  ...  The significant trade-offs associated with resiliency and storage mechanism choices underscore the importance of versatility in storage i [...]  ...  The Ursa Minor storage system incorporates the R/W-PF.  ... 
doi:10.1184/r1/6619376 fatcat:245yp4vfcjahdfxfmkhkernsfm

Quality-Selected Lensing Analysis Of Galaxy Clusters In Subaru Telescope Fields

Ryan J. Michney, Ian Dell'Antonio, Richard Gaitskell, Gregory Tucker
2015 Zenodo  
), and the remaining 47 represent potential new cluster discoveries.  ...  Because most matter is non-luminous, weak lensing provides an opportunity for direct measurement of large scale mass clustering, independent of considerations involving cluster dynamics.  ...  Cluster counts based on ROSAT X-ray measurements of cluster weight and redshifts.  ... 
doi:10.5281/zenodo.192446 fatcat:zpe6wowihvba7jkttc3l4frhji
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