Kazumi Kumazoe

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Our group has been conducting a series of experiments on various recently available high-speed transport protocols over long-distance, 10-gigabit-class, international testbed networks. The study reported here focuses on the scenario of multiple coexisting flows along an end-to-end 10-Gbps path, where TCP-based transport protocols are used. The results show(More)
In this paper, we describe two distributed, data intensive applications that were demonstrated at iGrid 2005 (iGrid Demonstration US109 and iGrid Demonstration US121). One involves transporting astronomical data from the Sloan Digital Sky Survey (SDSS) and the other involves computing histograms from multiple high volume data streams. Both rely on newly(More)
—In this paper, we address the problem of how TCP sessions ramp up their transmission windows in a controlled way. We introduce a conservative slow start scheme that reduces to the regular slow start when session path queues are empty, but slows down the control window increase speed as buffers start to build up. We show via event driven simulation and open(More)