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  • in HPC

Parallel Spectral Numerical Methods

Very nice Wikibook based on Parallel Spectral Numerical Methods by Chen et al. (2012) from University of Michigan. Discusses how to solve ordinary differential equations (ODE) and partial differential equations (PDE) using separation of variables. Next, it introduces numerical time-stepping schemes that can be used to solve ODEs and PDEs. This is followed by an introduction to pseudo spectral methods through an overview of the discrete Fourier Transform (DFT) and the Fast Fourier Transform (FFT) algorithm that is used to quickly calculate the DFT. Finally it will combine all of these to solve a couple of different PDEs first in a serial setting and then in a parallel setting. The programs will use Matlab and Fortran. A Python implementation of some of the Matlab programs is also provided.

https://en.wikibooks.org/wiki/Parallel_Spectral_Numerical_Methods

  • in HPC

LNCC SDumont supercomputer

Some related links I found interesting (mostly in Portuguese):

More info:

Zenodo

Zenodo is a general-purpose open repository developed under the European OpenAIRE program and operated by the European Organization for Nuclear Research (CERN) and allows the deposit of research articles, datasets, research software, reports and any other related digital artifacts to research. For each submission, a persistent digital object identifier (DOI) is created, which makes stored items easily citable. It also allows the deposit of data sets of up to 50 GB. One supported source is GitHub repositories. It is hosted on CERN's high-performance computing infrastructure that is operated primarily for the needs of high-energy physics.

https://zenodo.org/

Lecture describing the use (in Portuguese): https://youtu.be/6tum4jq4mNs

  • in HPC

WSCAD and SBAC-PAD

The Symposium on High Performance Computing Systems (WSCAD), a national event organized by the Brazilian Computing Society (SBC) and the Institute of Electrical and Electronic Engineers (IEEE), aims to highlight the main developments, applications and trends in Computer Science. Computing for distributed systems, high-performance processing and architecture. The IEEE International Symposium on Computer Architecture and High Performance Computing (SBAC-PAD) is usually held annually in conjunction with the WSCAD event in October.

http://wscad.sbc.org.br/edicoes/edicoes.html

MicroCloud

MicroCloud is an interesting project that, through lightweight virtualization and few host computers, allows you to quickly generate a cluster of several computing nodes, requiring few resources and allowing you to use common available hardware at home, such as Raspberry Pi and laptops.

https://canonical.com/microcloud

Its sufficiently small to function on a developer laptop. It can be utilized for safely experimenting with new technologies, simulating or testing complicated infrastructure processes, simulating how your workloads would operate in production, and creating lightweight, restricted disposable testing environments.

It is a simple method to start an LXD cluster with high availability. It makes use of snap packages, has the ability to automatically configure LXD and Ceph on a group of servers, and uses mDNS to find other servers on the network automatically. This allows you to run a single command on one machine to build an entire cluster.

  • in INPE

INPE General Regulations

INPE's General Regulations 2024 (approved on 09/04/2023) in searchable PDF format:

The original PDF file containing INPE's General Regulations 2024 has an annoying problem that is not searchable and is not possible to select text. What I used to fix it was:

$ pdfsandwich -lang por <in.pdf> -o <out.pdf>
$ gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.7 -q -o <out.pdf> <in.pdf>
$ ocrmypdf -l=por -s -O=3 --jbig2-lossy --output-type=pdf <in.pdf> <out.pdf>
$ qpdf --linearize <in.pdf> <out.pdf>

Zotero

I use Zotero in my daily life to do my research. Zotero is a free and open source reference manager for bibliographic data and research materials. It features integration with web browsers, word processors, Google Docs, generation of in-text citations, footnotes and bibliographies, and has a built-in PDF reader with annotation capabilities. It was originally created at the Center for History and New Media at George Mason University.