J. Harden, D. Reese, F. To, D. Linder, C. Linder, C. Borchert, and G. Jones, A Performance Monitor for the MSPARC Multicomputer,in Proceedings of the IEEE SOUTHEASTCON 92, IEEE Press, 1992, pp. 724-729.  Home/Search   Document Details and Download   Summary   Related Articles   Check

....modification to the software application. The software will generally execute a small atomic instruction that causes the hardware monitor to operate. These types of systems are not nearly as expensive as full hardware implementations but are slightly more intrusive. The MSPARC performance monitor [Harde92], the HMON Environment [Dodd92] the Multikron hardware [Harde95] and the Paragon Performance Monitoring Environment [Ries93] are based on the hybrid concept. Problems that need to be examined carefully when using hardware assistance for tracing are: w What kind of information will this provide ....

....is designed for promoting a standard in performance monitoring hardware and software. Because of the amount of data generated by todays systems, it is recommended by Harden et al. that hardware assistance be provided to help reduce the overhead and obtrusiveness of gathering the needed data [Harde92, Horie93]. 3.1.2.3 Software Instrumentation Software instrumentation is the most common method of acquiring the needed data from an executing concurrent application. In this approach, the software application has procedure calls placed at appropriate locations that direct the application to transmit ....

[Article contains additional citation context not shown here]

J. Harden, D. Reese, F. To, D. Linder, C. Linder, C. Borchert, and G. Jones, A Performance Monitor for the MSPARC Multicomputer,in Proceedings of the IEEE SOUTHEASTCON 92, IEEE Press, 1992, pp. 724-729.

....is worst case asymptotically optimal in terms of both execution time and memory usage (see [18] for the proof) IV. Probe acquisition and PAG construction A. MSPARC multicomputer The traces used in this study were collected with the instrumentation facilities of the MSPARC multicomputer [19]. The MSPARC is an 8 node multicomputer based on Sun SPARCstation 2 processing boards. The nodes are organized as a mesh, and the interconnection is via wormhole routers. Each node is equipped with an intelligent performance monitor adapter that provides an interface to a separate data collection ....

J. C. Harden et al., "A performance monitor for the MSPARC multicomputer,"inProc.IEEESoutheastcon'92,Apr.12--15, 1992, pp. 724--729.

....units are simply not accessible to hardware monitors. In contrast, hybrid monitoring has the same high level correlation of event data as with software monitoring, but takes a pro active approach of providing special purpose hardware to receive event data through low overhead writes [2] 3][4][5] Typically, hybrid monitors apply a high resolution global timestamp to event data and pass it along for external processing and storage. Capturing event traces involves a constant, relatively insignificant overhead. Although the advantages of hybrid monitoring have been known for some time, ....

J. Harden, D. Reese, F. To, D. Linder, C. Borchert, G. Jones, "A Performance Monitor for the MSPARC Multicomputer," IEEE Southeastcon '92, April 12--15, 1992.

....the masking of communications delays associated with the data supporting the computations. Tools featuring hybrid performance monitoring provide a uniquely unobtrusive view of parallel computer fundamentals and help bring the goal of substantially accelerating code performance within reach [1] 2][3][4] While the advantages of hybrid monitoring minimal use of system memory and processing resources, accuracy and linkage to This research is supported in part by National Science Foundation CISE Instrumentation Program grant CDA 9222917. application ....

....parallel system which all involve tradeoffs between intrusiveness, perturbation, and level of abstraction [5] Hardware monitors operate by snooping system busses and control lines and as such do not perturb the system at all from a software point of view. However, hardware monitors are costly [3] and collect very low level data. As such, it is difficult to interpret the data collected in terms of program abstractions. Furthermore, integrated memory management and caches may make aspects of the system unobservable to external hardware. Software monitors operate by placing extra lines of ....

J. Harden, D. Reese, F. To, D. Linder, C. Borchert, G. Jones, "A performance monitor for the MSPARC multicomputer," Institute of Electrical and Electronics Engineers (IEEE) Southeastcon '92, Apr. 12--15, 1992.

....used for testing the hypothesis of this research. Methodology A prototype implementation of the statistical and visualization components of the analysis framework has been developed. This implementation uses program activity graphs (PAGs) generated from traces gathered on the MSPARC multicomputer (Harden et al. 1992) in conjunction with the Object Oriented Fortran (OOF) parallel programming environment (Reese and Luke 1991) MSPARC Multicomputer Instrumentation System The MSPARC is a mesh connected 8 node multicomputer developed at Mississippi State University s NSF Engineering Research Center. The MSPARC ....

Harden, James, Donna Reese, Filip To, Dan Linder, Chris Borchert, and Girault Jones. 1992. A performance monitor for the MSPARC multicomputer. In Proceedings of the IEEE southeastcon '92 in Birmingham, Alabama, April 12--15, 1992, 724--29. Los Alamitos: IEEE Computer Society Press.

....of the BFS algorithm is in the combination of time and memory requirements. 9 IV. PROBE ACQUISITION AND PAG CONSTRUCTION A. MSPARC Multicomputer and Object Oriented Fortran Environment The traces used in this study were collected with the instrumentation facilities of the MSPARC multicomputer [11]. MSPARC nodes are organized as a mesh, and the interconnection is via wormhole routers. Each node is equipped with an intelligent performance monitor adapter that provides an interface to a separate data collection network. The Object Oriented Fortran (OOF) programming environment [12] is used ....

J. C. Harden, D. S. Reese, F. To, D. Linder, C. Borchert, and G. Jones, "A performance monitor for the MSPARC multicomputer," in Proc. IEEE Southeastcon'92, Apr. 12--15, 1992, pp. 724--729. 21

Online articles have much greater impact   More about CiteSeer.IST   Add search form to your site   Submit documents   Feedback  

CiteSeer.IST - Copyright Penn State and NEC