Naoki Yonezawa

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This case highlights the probable association of significantly displaced posterior first-rib fracture and jagged edges of the fracture line following blunt chest trauma with delayed ipsilateral subclavian artery rupture. Early angiography and first-rib repair should promptly be considered under such circumstances.
In order to reduce the overhead of barrier synchronization, we have proposed an algorithm which eliminates barrier synchronizations and evaluated its validity experimentally in our previous study. As a result, we have found that the algorithm is more effective to the load-imbalanced program than load-balanced program. However, the degree of the load balance(More)
Since barrier synchronization is a simple means to guarantee the order of data producing and data consuming, it is often used in parallel programs. However, barrier synchronization causes the processors' idle time to increase. To reduce the overhead of barrier synchronization, we have proposed an algorithm which eliminates barrier synchronizations and(More)
Distributed shared memory (DSM) is an important technology that provides programmers the underlying execution mechanism for shared memory programs. To improve the performance of DSM, recent studies have been carried out with introducing compiler assistance. The compiler generates codes for dependency analysis and communication. This paper proposes(More)
Since barrier synchronization is a simple means to guarantee the order of data producing and data consuming, it is often used in parallel programs. However, barrier synchronization causes the processors' idle time to increase. To reduce the overhead of barrier synchronization, we have proposed an algorithm which eliminates barrier synchronizations and(More)
This paper gives a detailed implementation of a message passing library called MMP. MMP is a user-level l i-brary that has been designed and implemented o n our Maestro PC (Personal Computer) cluster. By accessing a network interface from a user process directly and performing DMA by a dedicated processor on the network interface , MMP can realize a low(More)
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