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Improving operating system and hardware interactions through co-design

David Nellans
This dissertation identifies the operating system as a ubiquitous area where single threaded performance and multithreaded performance have often been ignored by computer architects.  ...  We show that the operating system contributes a nontrivial overhead to even the most computationally intense workloads and that this OS contribution grows to a significant fraction of total instructions  ...  Until recently most commercial microprocessors also were not, or were not exposing, performance analysis circuitry to the system programmer.  ... 
doi:10.26053/0h-t8p4-gkg0 fatcat:vfztrassnzgspdncg3pcfxdczy

Scale-Out Processors

Pejman Lotfi Kamran
If it were not for the joy of working on such an extraordinary research project, I would have left the Ph.D. program years ago when I faced, for the first time, the difficulties and pains of being a Ph.D  ...  From the time that I can remember, they were the source of inspiration, motivation, and encouragement for me.  ...  Flexus models the SPARC v9 ISA and is able to run unmodified operating systems and applications. We use the SimFlex multiprocessor sampling methodology [89] .  ... 
doi:10.5075/epfl-thesis-5906 fatcat:v5kwfjeitjedvamyeg4kwyua7i