نتایج جستجو برای: two class priority mm1 system
تعداد نتایج: 4474304 فیلتر نتایج به سال:
This paper addresses the problem of poor response time for large parallel jobs under nonpreemptive backfill scheduling policies. Four monthly workloads from the large-scale NCSA O2K system are used to evaluate new scheduling policies. Our key result is that partitioning the system based on job class, where class is defined by the number of requested processors, significantly improves overall pe...
In this paper, we study a queueing system serving multiple classes of customers. Each class has a finite-calling population. The customers are served according to the preemptive-resume priority policy. We assume general distributions for the service times. For each priority class, we derive the steady-state system size distributions at departure/arrival, and arbitrary time epochs. We introduce ...
Context. Star formation efficiency (SFE) theories are currently based on statistical distributions of turbulent cloud structures and a simple model of star formation from cores. They remain poorly tested, especially at the highest densities. Aims. We investigate the effects of gas density on the SFE through measurements of the core formation efficiency (CFE). With a total mass of ∼2 × 104 M , t...
Recently, huge number of e-mails is sent and received. These e-mails are classified into spam and non spam ones which are processed with the same priority. To guarantee a higher priority service to non-spam e-mails than that is provided to spam e-mails, a two-priority queue scheme was proposed. There are some drawbacks in the two-priority queue scheme such as it fails to provide a Quality of Se...
Bone marrow plasma cells (PCs) from 74 patients with newly diagnosed multiple myeloma (MM), 5 with monoclonal gammopathy of undetermined significance (MGUS), and 31 healthy volunteers (normal PCs) were purified by CD138(+) selection. Gene expression of purified PCs and 7 MM cell lines were profiled using high-density oligonucleotide microarrays interrogating about 6800 genes. On hierarchical cl...
The Edmonston vaccine strain of measles virus (MV-Edm) propagates efficiently in a broad range of human tumor cells, killing them selectively. However, the oncolytic potency of MV-Edm in different human tumor xenograft therapy models is highly variable and there is no convenient way to map the distribution of virus-infected tissues in vivo. To enhance the oncolytic potency of MV-Edm against rad...
In this paper, we walk in the footsteps of the stimulating paper by Lee Breslau and Scott Shenker entitled “Best-effort vs. Reservations: A Simple Comparative Analysis”[1]. In fact, we finally follow their invitation to use their models as a starting point and extend them to reason about the very basic but still very much debated architectural issue whether quality of service (QoS) mechanisms l...
Many companies intend to operate at the global level, therefore, the world-class manufacturer and strategic supplier selection have the highest priority for their success. This paper tries to design a supplier evaluation model to select the suppliers that can operate at world-class level and are capable of strategic co-operation with the main company. Global strategic supplier selection mod...
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