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Questions tagged [hardware]

3 votes
0 answers
38 views

AMD Epyc F or X variant for MODFLOW?

I'm trying to choose a processor type for an HPC cluster for calculations with MODFLOW 6 (extended version). I'm looking at the F and X variants of AMD Epyc processors. The F variant has a higher ...
Joe7's user avatar
  • 131
1 vote
0 answers
67 views

Sequential Analog Computers?

I was wondering whether there have been any documented uses of computer systems which work with fully analog values in a discrete time space. Classical analog computers usually operate with fully ...
Runsva's user avatar
  • 111
3 votes
1 answer
3k views

Recommended CPU for CFD running parallel, FDS (Fire Dynamics Simulator)

I am purchasing a new workstation to run FDS (Fire Dynamics Simulator) simulations, a CFD code for thermally driven fluid flow. Currently, I am using an Ubuntu Linux build with a Xeon E5-2630 v3 @ 2....
John S.'s user avatar
  • 39
0 votes
0 answers
375 views

Solving huge dense square symmetric linear system

I have a linear system of the type $A x = y$ where A is a dense, square, symmetric, positive definite matrix, $x$ a vector of unknown parameters, and $y$ is a vector of observed quantity. I know that ...
pinpon's user avatar
  • 153
6 votes
4 answers
1k views

How important is learning hardware/architecture for scientific computing?

Apologies if this is a bit of a soft, unclear, or opinion-based question. I'm a relatively new PhD student in a (computational) quantum chemistry group. My group develops and maintains a few software ...
tmph's user avatar
  • 357
31 votes
4 answers
10k views

Is half precision supported by modern architecture?

I am new to computer science and I was wondering whether half precision is supported by modern architecture in the same way as single or double precision is. I thought the 2008 revision of IEEE-754 ...
Asad Mehasi's user avatar
1 vote
1 answer
139 views

Numerical bottlenecks

On a desktop scale computer, what are the most important bottlenecks (RAM vs. CPU, single vs. multithread) for numerical calculations? I'm specifically most interested in exact diagonalization and ...
JumpyLion's user avatar
6 votes
1 answer
876 views

Consumer hardware for scientific computing?

I'm interested in problems around probability, statistics, and statistical mechanics, and often I find it useful to perform simulations to get some sense of the underlying phenomena. Example ...
alligator's user avatar
  • 105