Christopher John Rossbach

Title: Christopher John Rossbach: Innovator in Computing Systems

Introduction

Christopher John Rossbach is a notable inventor based in Menlo Park, CA. He has made significant contributions to the field of computing systems, holding a total of 6 patents. His work focuses on enhancing the efficiency and performance of virtualized computing environments.

Latest Patents

One of Rossbach's latest patents is titled "Compiler-driver programmable device virtualization in a computing system." This invention provides a method for virtualizing a hardware accelerator within a virtualized computing system. The system includes a hypervisor that supports the execution of multiple virtual machines (VMs). The method involves receiving several sub-programs at a compiler in the hypervisor from various compilers in the respective VMs, each containing a hardware-description language (HDL) description. The compiler combines these sub-programs into a monolithic program and generates a circuit implementation that includes multiple sub-circuits for the respective sub-programs. Finally, the circuit implementation is loaded onto a programmable device of the hardware accelerator.

Another significant patent by Rossbach is "Decoupling memory metadata granularity from page size." This invention offers an approach for tracking metadata, such as accessed and dirty bits, of page tables at a finer granularity than the size of the page tables. The modifications to existing hardware design enable finer page table granularity of metadata, leading to a more precise representation of memory state and improvements in system performance and efficiency. The implementation of finer grain dirty metadata can dramatically enhance the efficiency and simplicity of subsystems.

Career Highlights

Rossbach has worked with prominent companies in the technology sector, including Microsoft Technology Licensing, LLC and VMware, Inc. His experience in these organizations has contributed to his expertise in developing innovative solutions in computing.

Collaborations

Some of his notable coworkers include Jonathan James Currey and Abbas Rafii, who have collaborated with him on various projects.

Conclusion

Christopher John Rossbach is a distinguished inventor whose work in computing systems has led to several impactful patents. His innovations continue to shape the future of virtualized computing environments.