We describe design issues for scalable I/O systems. I/O system modularity is the central issue. We identify the new information and algorithms responsible for high performance in scalable I/O. We show how to assign them to the parts of a scalable computer system so the result is modular. We built a modular I/O system and it is commercially available. We describe its design and performance bench...

Smart card systems di er from conventional computer systems in that di erent aspects of the system are not under a single trust boundary. The processor, I/O, data, programs, and network may be controlled by di erent, and hostile, parties. We discuss the security rami cations of these \splits" in trust, showing that they are fundamental to a proper understanding of the security of systems that i...

ion is raised from low-level bus operations (such as MMIO) to device-level operations (such as “send a packet”). The performance of paravirtual soluScalable I/O a Well-Architected Way to Do Scalable, Secure and Virtualized I/O Julian Satran Leah Shalev Muli Ben-Yehuda Zorik Machulsky [email protected] [email protected] [email protected] [email protected] IBM Haifa Research Lab, Haifa, Israel

For feedback loops involving single input, single output monotone systems with well-defined I/O characteristics, a recent paper by Angeli and Sontag provided an approach to determining the location and stability of steady states. A result on global convergence for multistable systems followed as a consequence of the technique. The present paper extends the approach to multiple inputs and output...

This paper describes the design and implementation of the virtual memory-mapped communication model (VMMC) on a Myrinet network of PCI-based PCs. VMMC has been designed and implemented for the SHRIMP multicomputer where it delivers user-to-user latency and bandwidth close to the limits imposed by the underlying hardware. The goal of this work is to provide an implementation of VMMC on a commerc...

In 2020, the Sierras of Córdoba suffered most extreme fire season in recent collective memory, causing severe ecological and socioeconomic damage. this study, we mapped fires 2020 using Sentinel 2 imagery, compared with historical statistics from 1987-2019 terms number fires, burned area, size distribution frequency. Additionally, analyzed incidence areas value (protected natural [PNA], priorit...

Abstract Efforts to recover and preserve the historical memory of past violence injustice are today increasingly widespread in countries wrestling with, or emerging from, violent conflict. This reflects rise studies as a distinct field inquiry well growing recognition importance centrally including voices victims elaboration narratives suffering evil. However, an “essentially contested concept,...