数据中心的工作负载要求高计算能力、灵活性、能效和低成本。同时改善所有这些因素非常具有挑战性。为了推进数据中心超出商用服务器设计可以提供的能力,我们设计并构建了一个可组合、可重构的结构,来加速部分大型软件服务。结构的每个...数据中心的工作负载要求高计算能力、灵活性、能效和低成本。同时改善所有这些因素非常具有挑战性。为了推进数据中心超出商用服务器设计可以提供的能力,我们设计并构建了一个可组合、可重构的结构,来加速部分大型软件服务。结构的每个实例都由嵌入48台机器的半机架6×8二维环面高端Stratix V FPGA组成。每台服务器中都放置了一个FPGA,可以通过PCIe来访问,并用成对的10 Gb SAS电缆直接连接到其他FPGA。在本文中,我们描述了这种结构在1,632台服务器组(bed)的中等规模的部署,并测量了其在加快Bing搜索引擎方面的功效。我们描述了系统的要求和架构,详细介绍了关键技术挑战,以及使系统在出现故障情况下保持鲁棒性所需的解决方案,还有根据排名候选文档测量的系统性能、功率和弹性。在高负载时,一定范围内的可重构结构提高了每台服务器固定延迟分布的吞吐量排名95%——或在保持等效吞吐量时,减少29%的尾延迟。展开更多
Chronic Lyme disease complex describes the burden carried by patients infected with Borrelia burgdorferi as well as other co-infections or secondary co-infections (opportunistic infections). These infections can cause...Chronic Lyme disease complex describes the burden carried by patients infected with Borrelia burgdorferi as well as other co-infections or secondary co-infections (opportunistic infections). These infections can cause a significant burden on patients more so than Lyme disease alone. Along with the many underdiagnosed cases of Lyme disease throughout the world exists numerous undiagnosed co-infection and secondary co-infections leading to debilitating symptoms for many patients. The potential for co-infections varies by location as well as to the exposure to various species of ticks. Since there is potential for patients to experience several tick bites including those of different species, additional microorganisms also commonly transmitted via tick bite are included that are typically left out of the conversation of potential Borrelia burgdorferi co-infections. The most common co-infections of Lyme disease include anaplasmosis, babasiosis, bartonellosis and ehrlichiosis. Secondary co-infections or opportunistic infections commonly seen in patients with Lyme disease are also discussed. By helping to establish a comprehensive list of infections associated with Chronic Lyme disease complex may in fact help patients receive a proper diagnosis in order to administer the much needed comprehensive treatments patients deserve.展开更多
文摘数据中心的工作负载要求高计算能力、灵活性、能效和低成本。同时改善所有这些因素非常具有挑战性。为了推进数据中心超出商用服务器设计可以提供的能力,我们设计并构建了一个可组合、可重构的结构,来加速部分大型软件服务。结构的每个实例都由嵌入48台机器的半机架6×8二维环面高端Stratix V FPGA组成。每台服务器中都放置了一个FPGA,可以通过PCIe来访问,并用成对的10 Gb SAS电缆直接连接到其他FPGA。在本文中,我们描述了这种结构在1,632台服务器组(bed)的中等规模的部署,并测量了其在加快Bing搜索引擎方面的功效。我们描述了系统的要求和架构,详细介绍了关键技术挑战,以及使系统在出现故障情况下保持鲁棒性所需的解决方案,还有根据排名候选文档测量的系统性能、功率和弹性。在高负载时,一定范围内的可重构结构提高了每台服务器固定延迟分布的吞吐量排名95%——或在保持等效吞吐量时,减少29%的尾延迟。
文摘Chronic Lyme disease complex describes the burden carried by patients infected with Borrelia burgdorferi as well as other co-infections or secondary co-infections (opportunistic infections). These infections can cause a significant burden on patients more so than Lyme disease alone. Along with the many underdiagnosed cases of Lyme disease throughout the world exists numerous undiagnosed co-infection and secondary co-infections leading to debilitating symptoms for many patients. The potential for co-infections varies by location as well as to the exposure to various species of ticks. Since there is potential for patients to experience several tick bites including those of different species, additional microorganisms also commonly transmitted via tick bite are included that are typically left out of the conversation of potential Borrelia burgdorferi co-infections. The most common co-infections of Lyme disease include anaplasmosis, babasiosis, bartonellosis and ehrlichiosis. Secondary co-infections or opportunistic infections commonly seen in patients with Lyme disease are also discussed. By helping to establish a comprehensive list of infections associated with Chronic Lyme disease complex may in fact help patients receive a proper diagnosis in order to administer the much needed comprehensive treatments patients deserve.
