Prathmesh Kallurkar

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In this paper, we present the design of a new Java based, cycle-accurate, heterogeneous architectural simulator, Tejas. Tejas is a trace driven simulator, which is platform-independent. It can simulate binaries in any ISA and corresponding to virtually any operating system. It can itself run on virtually any machine. It is one of the fastest cycle accurate(More)
With an increasing number of cores per chip, it is becoming harder to guarantee optimal performance for parallel shared memory applications due to interference caused by kernel threads, interrupts, bus contention, and temperature management schemes (referred to as jitter). We demonstrate that the performance of parallel programs gets reduced (up to 35.22(More)
Virtualization is increasingly being deployed to run applications in a cloud computing environment. Sadly, there are overheads associated with hypervisors that can prohibitively reduce application performance. A major source of the overheads is the destructive interference between the application, OS, and hypervisor in the memory system. We characterize(More)
Instruction prefetching is a standard approach to improve the performance of operating system (OS) intensive workloads such as web servers, file servers and database servers. Sophisticated instruction prefetching techniques such as PIF [12] and RDIP [17] record the execution history of a program in dedicated hardware structures and use this information for(More)
This paper proposes a new paradigm for the design of cryptographic filesystems. Traditionally, cryptographic file systems have mainly focused on encrypting entire files or directories. In this paper, we envisage encryption at a finer granularity, i.e. encrypting parts of files. Such an approach is useful for protecting parts of large files that typically(More)
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