National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Asynchronous Duet Benchmarking
Drozdík, Tomáš ; Horký, Vojtěch (advisor) ; Tucci, Michele (referee)
Accurate regression detection in volatile environments such as the pub- lic cloud is difficult. Cloud offers an accessible and scalable infrastructure to run benchmarks, but the traditional benchmarking methods often fail to predict regressions reliably. Duet method acknowledges the variability and runs the workloads in parallel, assuming similar outside impact symmetry. This thesis examines a duet variant that does not synchronize harness iter- ations which enables broader use of this method. The asynchronous duet method can detect 1 − 5% slowdowns for most of the tested benchmarks in volatile environments while reducing the overall costs by up to 50%. Mea- surements were obtained by a benchmark automation tool for running and processing benchmarks from multiple suites. This tool can run benchmarks with sequential and both duet methods utilizing containers for portability. 1
Scalable addressing and routing protocol for ad-hoc networks
Drozdík, Tomáš ; Kratochvíl, Miroslav (advisor) ; Kliber, Filip (referee)
Ad hoc networks are dynamic networks with no pre-existing structure or centralized administration, where all the devices participate equally in the routing of packets. The lack of established structure complicates the effi- ciency of routing in such networks, and makes many address allocation meth- ods unsuitable. The thesis proposes a new routing and addressing protocol SARP, which works as a distance-vector routing protocol, but optimizes the sizes of the routing tables on the individual nodes by automatically approxi- mating the routes into groups where possible. Most importantly, SARP does not require any pre-established network structure nor unique router identi- fiers, and works only by exchanging the entries in routing tables. We show that SARP is a scalable routing protocol on networks where the addresses can be grouped well. Additionally, we show that SARP can, to some extent, use the reduced information for successful address assignment. However, a fully working address assignment in general settings will require further re- search in methods to globally detect address collisions without unique router identification. 1

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