Made available in DSpace on 2016-03-22T17:26:15Z (GMT). No. of bitstreams: 1 Javier Luzardo DPU.pdf: 839906 bytes, checksum: 38509c929fbe12a071e1e85a8597c1ad (MD5) Previous issue date: 2008-12-09 / El susodicho trabajo posee el objetivo de analizar cómo interactúan las fricativas sibilantes /_s/ (en final de sílaba), insertadas en la frontera lingüística establecida en los Dialectos del Portugués del Uruguay. Análisis ésta realizada con los datos del BDPU Banco de Datos del Portugués del Uruguay residente en la UCPEL (Universidad Católica de Pelotas) y construido de manera interinstitucional, en conjunto con la Universidad de la República del Uruguay - UDELAR. El corpus de este estudio contó con 2.328 datos u ocurrencias de /_s/, representando los dialectos de Artigas, Rivera, Río Blanco y Chuy. El estudio del comportamiento de la fricativa se hace por intermedio del programa computacional de estadística Varbrul. Además de hechos pertenecientes a la nueva forma evidenciada en el Portugués del Uruguay, como por ejemplo, aspiración [h]. Suponemos, también, la realización de la vocal geminada/(larga) ocupando el espacio dejado libre por la consonante /_s/. También analizamos las ocurrencias de /s/→[z]~[h]; Por fin, llegamos a una frontera heterogénea rica en historia, cultura, y producción lingüística que, más allá de ser analizada se merece, más que nada, que sea recordada como parte histórica del Uruguay / O presente trabalho tem o objetivo de analisar como atuam as fricativas sibilantes /_s/(em final de sílaba), inseridas na fronteira lingüística estabelecida nos Dialetos do Português do Uruguai. Esta análise é realizada com os dados do BDPU Banco de Dados do Português do Uruguai residente na UCPEL e construído de modo interinstitucional, em parceria com a Universidad de la República del Uruguay - UDELAR . O corpus deste estudo contou com 2.328 dados ou ocorrências de /_s/, representando os dialetos de Artigas, Rivera, Rio Branco e Chuy. O estudo do comportamento da fricativa fez-se mediante o programa computacional de estatística Varbrul. Além de fatores pertencentes à nova forma evidenciada no Português do Uruguai, como por exemplo, aspiração [h]. Supomos, também, a realização de vogal geminada ocupando o espaço deixado vago pela consoante /_s/. Também analisamos as ocorrências de /s/→[z]~[h]; Por fim, chegamos a uma fronteira heterogênea rica em história, cultura, e produção lingüística que, além de ser analisada, merece, acima de tudo, ser lembrada como parte histórica do Uruguai

Recently, we have seen an evolution of programmable network devices, where it is possible to customize packet processing inside the data plane at an unprecedented level. This is in contrast to traditional approaches, where networking device functionality is fixed and defined by the ASIC and customers need to wait possibly years before the vendors release new versions that add features required by customers. The vendors in the industry have adapted and the focus has shifted to offering new types of network devices, such as the SmartNIC, IPU, and DPU. Another major paradigm shift in the networking area is the shift towards protocols that encrypt parts of headers and contents of packets such as QUIC. Also, many devices such as smart phones have support for multiple access networks, which requires efficient multipath protocols to leverage the capabilities of multiple networks at the same time. However, when using protocols inside the network that requires encryption such as QUIC or multipath QUIC, packet processing operations for the en/decryption process are very resource intensive. Consequently, network vendors and operators are in need to accelerate and offload crypto operations to dedicated hardware in order to free CPU cycles for business critical operations. Therefore, the aim of this study is to investigate how multipath QUIC can be offloaded or hardware accelerated in order to reduce the CPU utilization on the server. Our contributions are an evaluation of frameworks, programming languages and hardware devices in terms of crypto offloading functionality. Two packet processing offloading prototypes were designed using the DPDK framework and the programming language P4. The design using DPDK was implemented and evaluated on a BlueField 2 DPU. The offloading prototype handles a major part of the packet processing and the crypto operations in order to reduce the load of the user application running on the host. A evaluation show that the throughput when using larger keys are only slightly decreased. The evaluation gives important insights in the need of crypto engines and/or CPUs with high performance when offloading.

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