Managing Contention
"Contention for shared resources significantly impedes the efficient operation of multicore processors" (Fedorova, 2009). The authors of "Managing Contention for Shared Resources on Multicore Processors" (Fedorova, 2009) found that shared cache contention as well as prefetching hardware and memory interconnects were all responsible for performance degradation. After implementing a pain, sensitivity and intensity, model to test applications, the authors discovered that high miss rate applications must be kept apart and not co-scheduled on the same domain (memory). Therefore, the management of how the applications were scheduled by the scheduler would mitigate the performance degradation of the cache lines and the applications on the processors.
The authors built a prototype scheduler, called Distributed Intensity Online (DIO) that distributes intensive (high latest level cache (LLC) miss rates) after measuring online miss rates of the application. With the execution of eight different workloads for testing, the DIO improved workload performance by 11% (Fedorova, 2009) with some applications showing 60-80% improvement with the worst case schedules. The prefetching hardware was the application that showed the most improvement under DIO. It also shows potential for ensuring QoS (quality of service) for critical applications with a means...
Power DI clusters incoming applications on as few machines as possible, except machines with memory intensive applications. The concept is the same on a single machine only it clusters the applications on as few memory domains as possible. The effectiveness differed with the number of memory intensive applications. The greater the number of memory intensive applications, the greater number of domains, or machines, that would end up getting used. So, the greater the number of memory intensive applications, the greater amount of power that was used. Power DI was able to adjust to the properties of the workload to minimize the power used.
The authors found the dominant cause of performance degradation is contention of shared resources of front-side bus, prefetching resources, and memory controller. Applications that issue many cache misses will occupy the memory controller and the front-line bus, which hurts other applications that use that hardware and the applications themselves. Cache contention stems from two or more threads running on the same domain (memory). The cache consists of lines allocated to hold thread memory as the threads issue cache requests. Threads share the last…
Pain As a neonatal intensive care nurse, I need to be aware of special considerations when working with my patients. Pain in neonates may have serious consequences for the development of the child, especially with regards to the serious risk of neurodevelopmental impairment (American Academy of Pediatrics, 2006). Long-term pain could be indicators of serious issues. Because of this, "the prevention of pain in neonates should be the goal of all
Pain Management in Post-Operative Patients Pain suffered patients undergoing surgery. The severity pain vary patient. It nurse caring patient postoperative phase manages patient's pain. Questions arise pain assessment, nurses estimation mismanagement patient pain, modes administration medical orders pain management suitable. Pain Management in Post-Operative Patients Effective pain control in post-operative patients is essential in ensuring patient's quick recovery, earlier mobilization and lower cost and higher patient satisfaction. The immune system of patients who
Pain Management Oregon State Board Treatment Method for Pain Management Treatment Method for Pain Management Treatment Method for Pain Management Education Requirement by Oregon State Board of Nursing (OSBN) The Oregon State Board of Nursing (OSBN) is responsible for checking and monitoring the education requirements of the registered nurses. There is a standard pain management requirement for every licensed health care provider in the state of Oregon regarding pain management. It has been made mandatory to
Moreover, fully three-quarters of the surveyed nurses reported that the lack of adequate assessment of cancer pain was a significant barrier to effective pain management, and almost as many (72%) reported a lack of clinician knowledge as representing yet another significant barrier to effective pain management (Vorthern and Ward 1992). Given the complexity of the pain experience, helping caregivers provide appropriate levels of pain management is particularly challenging. Many
Findings showed that medication was the most common treatment, followed by physiotherapy and no treatment. The majority preferred physiotherapy and no surgery was the third most popular choice. Their preferences and choices evolved from previous experience. They did not perceive their pain as severe enough to require surgery. (Mitchell & Hurley). A revised regimen for Sid consists of 10 parts. These are a record of his general medical history for
Hospice caregivers have moral obligations to the patient and the patient's caregivers. The author clarifies that in the hospice, the patient's family members are, in fact, the primary caregivers under the situation. The best that nurses can do is to use strategies, which will incorporate family members into delivering the best palliative care possible. Failure to achieve the best results can create much moral anguish and sense of failure