Christoph Scheurich

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The problems addressed apply to both throughput-oriented and speedup-oriented multiprocessor systems, either at the user level or the operating-system level. basic definitions are provided. Communication and synchronization are briefly explained, and hardware-level and software-level synchronization mechanisms are discussed. The cache coherence problem is(More)
A multiprocessor system designed to support multithreading must adhere to a simple logical model of concurrency. Besides executing each process correctly, the multiprocessor must preserve the dependencies among processes. Dependencies among concurrent processes are specified by explicit statements such as critical sections or by the sharing of writable(More)
BACKGROUND & AIMS Secretion of salivary protective factors in patient s with gastroesophageal reflux disease is impaired. However, the impact of physiological stimulus mastication on salivary protective factors output remains largely unknown. The aim of this study was to measure salivary volume, pH, HCO3-, peptide growth factors, prostaglandin, mucin,(More)
High-performance multiprocessors must incorporate a high-bandwidth, short-latency memory aggregate to support maximal processor utilization. Cache memories are often used to meet this requirement. The performance of cache-based, shared-memory multiprocessors can suffer greatly from moderate cache miss rates because of the usually high ratio between(More)
Magnetic resonance imaging (MRI) of the bone marrow was performed in 29 patients with leukemia, aplastic anemia, or lymphoma who were scheduled for bone marrow transplantation, and in 12 normals. T1-weighted coronal images (TR600/TE40) of the pelvis and proximal femurs demonstrated marrow pathology in adult patients. A simple MR grading system was developed(More)