Moon-Sang Lee

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The user-level communication is investigated by many researches, in order to resolve the performance degradation of cluster systems due to inefficient communication protocols. It removes the kernel intervention from the critical communication path. Recently, Intel, Microsoft and Compaq introduce the Virtual Interface Architecture (VIA), a standard for(More)
Accurate branch prediction is essential for obtaining high performance in pipelined superscalar processors. Though many dynamic branch predictors have been proposed to obtain high prediction accuracy, they cannot perform as expected under context switches. It is observed that context switches, even at fairly large intervals, can seriously degrade the(More)
— User-level communication alleviates the software overhead of the communication subsystem by allowing applications to access the network interface directly. For that purpose, efficient address translation of virtual address to physical address is critical. In this study, we propose a system call based address translation scheme where every translation is(More)
—User-level communication allows an application process to access the network interface directly. Bypassing the kernel requires that a user process accesses the network interface using its own virtual address which should be translated to a physical address. A small caching structure which is similar to the hardware TLB on the host processor has been used(More)
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