Questions tagged [hpc]
High Performance Computing generally uses large arrays of computers connected in clusters or grids.
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Problems with High-Performance Computing and Stack Exchange Data Explorer. Any Advice? [closed]
I'm currently experiencing some challenges with my high-performance computing setup and a Stack Exchange product. As someone relatively new to managing both hardware and software in this capacity, I ...
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Source for scalability challenge for number of finite element nodes per process
Context
In distributed simulation of a finite element mesh with $N$ nodes and $P$ processes, a professor stated to me that "achieving good scaling for more than 25,000 finite element nodes per ...
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Split RAM asked between nodes and different partitions
I'm using a Slurm-based HPC at my university to run memory-intensive software. I need to know if it's possible to distribute the required RAM across multiple nodes and partitions. My lab has exclusive ...
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How to find a computational bottleneck
I am a PhD student and my lab has developed a code to run simulations. It relies on external libraries and code my lab has written. I've run a strong scaling study which shows poor performance, see ...
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Approximately, at any given time, what proportion of the world's total HPC resources are dedicated towards inverting matrices?
I had heard in a lecture, perhaps 15 years ago, that the vast majority of the world's HPC resources were dedicated to solving linear systems by iterative methods. I seem to remember it was 90%. I can'...
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Problems on the algebraic theory of sparse matrices
I have finished testing basic large densely parallel matrix multiplication on 4 gpu's ,and have done work on TSLU and TSQR on cpu's based on mpi. I am going to continue working on the theory of ...
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Right blocked linear equation solver on Dense Algebra and Sparse Algebra
I have implemented 1D mesh parallel QR decomposition and LU decomposition,I would like to ask if a linear equation Ax=b,b is a large matrix and I need to shard b or Shard A,b at the same time. Is ...
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row and column based distributed LU factorization
The LU parallel computation theories I've seen are based on $M\times N$ mesh computations, is there a theory for one dimensional device mesh LU parallel decomposition?
For example, $A$ is a matrix. we ...
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Questions on the theory of distributed numerical algebraic computation
I'm trying to build a pure python distributed numerical algebra computation kernel based on GPU. but after I've learnt most of the software engineering, I realise that I'm seriously lacking in ...
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What is the fastest library for multiplying polynomials and multi-point evaluation over finite fields?
I am looking for a library (don't care about the programming language) that performs the following two tasks as quickly as possible:
Compute the coefficients of the product of a set of degree 1 ...
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OpenFOAM- write interval changed after restarting simulation
I am running a pimpleFoam simulation on a supercomputer. I have to submit it as a job which has an allocated time. The simulation I was running ran out of this allocated time. So then I restarted it ...
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How can I port bind an interactive transient PBS session to the head node and then port bind the head node to my local machine?
The short of it: How can I port bind an interactive transient PBS session to the head node and then port bind the head node to my local machine? So, a chain of port bind of three machines.
More ...
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PhD in scientific computing to be a scientific programmer
Intro and disclaimer: this question concerns developing a career in Scientific Computing in industry, starting from an (applied) mathematics background, say an MSc. It definitely arises from my ...
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OpenMP Fortran array operations in target regions
I am asking this here for the possibility that someone here is familiar with OpenMP offloading. Is there some other way to parallelise Fortran array operations outside of unrolling the loops of the ...
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Where to find datasets to research the optimal parameter search space for HPC systems? [closed]
I am a student researcher who is new to the HPC domain.
I have recently taken a project where I am working on optimizing the parameter search space (both application level and hardware level ...
