The adjoint operator for parallel MPI
MPI-Parallel Discrete Adjoint OpenFOAM
... An MPI-parallel discrete adjoint version of the CFD tool box OpenFOAM was ...simulation. Adjoint simulations are likely to remain a considerable challenge for the foreseeable ...
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Experiments on Checkpointing Adjoint MPI Programs
... most MPI parallel applications. However, for MPI codes this question has always been addressed by ad-hoc hand manipulations of the differentiated code, and with no formal assurance of ...of ...
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On the Adjoint Operator in Photoacoustic Tomography
... the adjoint of the PAT forward operator, which is described in this article from physical, theoretical and numerical ...the adjoint of the PAT forward operator in the continuous framework is ...
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Adjoint Operator in Probabilistic Hilbert Space
... Our main purpose of this paper is how to give the definition for the adjoint operator in Probabilistic Hilbert Space and some of its properties by using the R[r] ...
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Memory Debugging of MPI-Parallel Applications in Open MPI
... the MPI-implementation offers superior debugging functionality, for errors that otherwise are not possible to detect with comparable MPI-debugging ...Open MPI as the so-called ...Open MPI, ...
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MPI and Pthreads in parallel programming
... The model which is the simplest for the programmer is of course the sequential model. To the programmer seems very normal to think he is programming for a single processor, which has a memory. The message-passing is the ...
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MPI + MPI: a new hybrid approach to parallel programming with MPI plus shared memory
... dominant parallel programming model since the ...massively parallel processing (MPP) platforms, large symmetric multiprocessing (SMP) machines with shared memory, and hybrid systems with tightly coupled SMP ...
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A Parallel Hybrid Approach With MPI And OpenMP
... in Parallel Computing and Multi Core and Many Core Programming in recent ...of MPI (Message Passing Interface) and OpenMP(Open Multi-Processor) programming structure to enhance the speed and running time of ...
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Triple variational principles for self-adjoint operator functions
... eigenvalues Operator functions Spectral decomposition For a very general class of unbounded self-adjoint operator functions we prove upper bounds for eigenvalues which lie within arbitrary gaps of ...
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Parallel Sparse Matrix - Vector Product:Pure MPI and hybrid MPI-OpenMP implementation
... Again, as of yet no explanation can be offered for the sudden drop of the 2 × 6, 2 × 12 and 4 × 3 configurations around N = 72 ± 12. Figure 9 shows the scalability achieved for the 160k × 160k random-100 matrix using the ...
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Parallel Computing of Kernel Density Estimates with MPI
... Szymon.Lukasik@pk.edu.pl Abstract. Kernel density estimation is nowadays a very popular tool for nonparametric probabilistic density estimation. One of its most impor- tant disadvantages is computational complexity of ...
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Can MPI Be Used for Persistent Parallel Services?
... using MPI, it would require the MPI imple- mentation to be resilient against ...The MPI Standard itself does not say much about fault tolerance; it is left as a quality of the ...But MPI does ...
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with pseudo-parallel Ricci operator
... On the other hand, in real hypersurface geometry of complex space forms, the Einstein condition is a too strong restriction for real hypersurfaces. In fact, there are no real hypersurfaces in non-flat complex space forms ...
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PLIERS: A Parallel Information Retrieval System Using MPI
... 4.2 Term Weighting Operations Users apply these operations by specifying a natural language query e.g. “parallel text retrieval”. Term Weighting operations assign a weight to a keyword/document pair and do a set ...
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PLIERS: A Parallel Information Retrieval System using MPI
... 4.2 Term Weighting Operations Users apply these operations by specifying a natural language query e.g. “parallel text retrieval”. Term Weighting operations assign a weight to a keyword/document pair and do a set ...
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Improving MPI-HMMER sscalability With Parallel I/O
... multiple parallel file systems in order to determine the file system’s im- pact on ...a parallel file system that is geared more towards scientific comput- ...Traditional parallel file systems such ...
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Survey on Pure Parallel Programming Models: OpenMP and MPI
... Correctness verifiable No Yes Table 1: Comparison between OpenMP and MPI Shared Memory OpenMP OpenMP is a shared memory Application Programming Interface (API) whose aim is to ease Shared Memory parallel ...
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Review of Performance Analysis Tools for MPI Parallel Programs
... first. MPI performance data views allow users to identify MPI calls that may constitute a ...an MPI call site takes the user to the relevant source ...mixed MPI and shared-memory ...
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SFIO, Parallel File Striping for MPI-I/O
... Due to the locking mechanisms needed to avoid simultaneous multiple accesses to the shared NFS file, MPICH MPI-I/O write operations can be carried out only at a very slow throughput 1 . Other factor reducing peak ...
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Parallel Computation using Message Passing Interface (MPI)
... The MPI synchronization depends mainly on four variables: context, tag, source rank, and destination rank (a context is analogous to a radio frequency, where only processes which have specified the same frequency ...
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