The effects of the general-purpose precise interrupt mechanisms in use for the past few decades have received very little attention. When modern out-of-order processors handle interrupts precisely, they typically begin by flushing the pipeline to make the CPU available to execute handler instructions. In doing so, the CPU ends up flushing many instructions that have been brought in to the reord...

We used memory reference traces from a DEC Ultrix system running the X11 window system from MIT Project Athena and several freely available X11 applications to measure different aspects of memory system behavior and performance. Our measurements show that memory behavior for X11 workloads differs in several important ways from workloads more traditionally used in cache performance studies. User...

Buffer overflows still remain a problem for software today. Even with address space randomization and non-executable stacks software remains vulnerable to clever exploits. In this paper we introduce the buffer overflow through a pratical example and take a retrospective look on the past 25 years of the arms race on buffer overflow exploits and protections.

In this paper we present a novel shared buffer scheme for network on chip applications. The proposed scheme is based on a dynamically allocated multi queue self-compacting buffer. Two physical channels share the same buffer space. This in turn provides a larger available buffer space per channel. The proposed scheme has similar performance using only sixty three percent of the buffer size that ...

Understanding the specific mechanism of pedestrian deceleration behavior can better provide data support and parameter calibration for flow simulation. In this paper, by introducing a buffer space, designed pedestrians walking single file experiment field observation, has obtained space under different speed, speed - mathematical model is established, results show that expected size were positi...

In credit-based flow control for ATM networks, switch buffer space is first allocated to each virtual circuit (VC) and then credit control is applied to the VC to prevent possible buffer overflow. Adaptive buffer allocation improves sharing by allowing dynamic allocation of buffer space to multiple VCs sharing the same buffer pool. This paper gives an overview of credit flow control and present...

One of the scarce resources that limits communication performance is buffer space on the network interface card. This becomes even worse when it is partitioned among several time-sliced processes. However, if gang scheduling is used, it is possible to swap buffer contents as part of the context switch, giving each job the full buffer space for the duration of its quantum. This does not suffer u...