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Programming environments for high-performance grid computing: the Albatross project
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DOI：10.1016/S0167-739X(02)00089-4.png)
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The aim of the Albatross project is to study applications and programming environments for computational Grids. We focus on high-performance applications, running in parallel on multiple clusters or MPPs that are connected by wide-area networks (WANs). We briefly present three Grid programming environments developed in the context of the Albatross project: the MagPIe library for collective communication with MPI, the replicated method invocation (RepMI) mechanism for Java, and the Java-based Satin system for running divide-and-conquer programs on Grid platforms. A major challenge in investigating the performance of such applications is the actual WAN behavior. Typical wide-area links are just part of the Internet and thus shared among many applications, making runtime measurements irreproducible and thus scientifically hardly valuable. To overcome this problem, we developed a WAN emulator as part of Panda, our general-purpose communication substrate. The WAN emulator allows us to run parallel applications on a single (large) parallel machine with only the wide-area links being emulated. The Panda emulator is highly accurate and configurable at runtime. We present a case study in which Satin runs across various emulated WAN scenarios. (C) 2002 Elsevier Science B.V. All rights reserved.
Keyword:
Grid computing
wide-area network emulation
Albatross
MagPIe
Panda
RepMI
Satin
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