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Next post, how I recovered the database of SSSD when I deleted the whole path /var/lib/sss/ by accident. 🥲

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Moreover, to enable secure external access, I configured a bridge acting as a switch to assign static IPs to the login node and a bastion node. The bastion node will verify and admit external connections, enforcing two-factor authentication for enhanced security. All of this powered by #freeIPA

an illustration of a woman sitting in front of a laptop using a cell phone

ALT: an illustration of a woman sitting in front of a laptop using a cell phone

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Additionally, I have decided to isolate the computing nodes network from the university network as a very basic attempt to reduce latency in message communications. Something more or less like this 👇🏼

a diagram of setting up a small office network with a hongzilla logo

ALT: a diagram of setting up a small office network with a hongzilla logo

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Cluster Update We are nearing the completion of the restart process for all services. Here is the current status of the login node services: 🟢 FreeIPA ▪️ LDAP ▪️ SSSD ▪️ Kerberos 🟢 Munge 🟡 SLURM 🟢 AutoNFS 🟢 Modules 🔴 Grafana 🔴 Prometheus

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By the way, the fortran post 👇🏼 bsky.app/profile/ogmd... I remember I prepared this nice ilustration about #fortran but I neves share it.😅 Well... here it go

A beutiful ilustration of a Fortran code fragment

However, I also need to remember that last July month, marked one year since I was forced to leave my previous PhD program 😖. That unfortunate event deserves its own post, and maybe I’ll start sharing that story soon...🥺 #phdlife

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Marcus Finix @ogmdevlab.bsky.social · 03/10/2025

The last time I posted here, I shared some thoughts about #Fortran, and I intended to talk about my #PhD journey. The first year has been tough, but I managed to overcome many challenges, from field work to #CAD modeling, I complete tasks satisfactorily.

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Otro dia a la espera de que llegue el SSD que necesito para restablecer el nodo login. Pienso hacer un post cortito sobre el proceso y otro mas detallado, allá en #mastodon 🦣

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Marcus Finix @ogmdevlab.bsky.social · 28/09/2025

Después de dejar listo el clúster MAGMA, montado a base de mucho ensayo, error y afinado de Slurm, hoy el nodo login dijo basta. Todavía corría sobre un HDD que ya habrá cumplido su ciclo. Ahora toca retroceder un paso, montar SSD y RAM nuevos, y restaurar el acceso al clúster. 🔧💻

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Marcus Finix @ogmdevlab.bsky.social · 16/09/2025

Hoy retome mis clases de Catalán, después de que la pandemia me arruinara mi primer curso oficial, hace ya 5 años. Espero terminarlo esta vez, sin ningún cisne negro

a man is holding a woman in a black dress

ALT: a man is holding a woman in a black dress

Marcus Finix @ogmdevlab.bsky.social · 13/09/2025

Apenas llegue a esta red y me ausente un tiempo. De un momento a otro me desborde en deberes y actividades propias del doctorado. Pero ahora estoy aqui con mucho que contar y compartir.

ALT: Strategy Action Plan GIF

Strategy Action Plan GIF

Marcus Finix @ogmdevlab.bsky.social · 10/05/2025

Magmatic intrusions look amazing 🌋 #canaryislands

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Marcus Finix @ogmdevlab.bsky.social · 08/05/2025

Another day at #CanaryIslands field work, preparing the #magnetoteluric sounding wire conections… I know, it seems like I know what I am doing 😜 #geophysics #vulcanology

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Marcus Finix @ogmdevlab.bsky.social · 07/05/2025

This week I'm out doing field work, and it's taking me more time than I expected to share a new thread about computational #electromagnetics here soon. I hope to post it shortly #CEM

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Marcus Finix @ogmdevlab.bsky.social · 26/04/2025

Hey Bruno! Yeah he brings great contributions to Fortran language and community. On the other hand, I hope there in BSC, you will have the opportunity to use codes like Alya to work with Fortran.

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Marcus Finix @ogmdevlab.bsky.social · 26/04/2025

For the past 3 months, I’ve been attending an #NPTEL course on Scientific #HPC, with lectures delivered by IIT Bombay. Tomorrow is the big day: my proctored exam! I’ve studied as much as I could. 😰 Let’s see if I can earn the certification.

EUMaster4HPC @eumaster4hpc.bsky.social · 23/04/2025

Reposted by Marcus Finix

One week left to apply for the EUMaster4HPC Summer School 2025! From 14–25 July at METU, Ankara (TR), explore #HPC for specialised applications in Data Science, Chemistry, Aeronautics & more. Includes expert lectures, industry insights, and social events. Learn more: eumaster4hpc.eu/summer-schoo...

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Marcus Finix @ogmdevlab.bsky.social · 25/04/2025

As a #geophysicist. I’ve done fieldwork in ERT, GPR, MASW, and VES but always avoided magnetotellurics. It just didn’t click with me. Now life is funny: in a few days, I’ll be doing my first MT surveys, guided by my #PhD advisor. Sometimes, the path you resist is exactly where you’re meant to grow

Thank you! Yeah I responded the email. Also I received and checked the next ones sent by you, thank you so much!

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I just discovered your account, and I'm very interested in attending the course. The registration is now closed, but I sent an email asking for a slot. Is there any chance I could get one?

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In the end, modern languages like 🐍 have taken most of the attention in the scientific community. However, Fortran is still alive and continuously evolving. With great community. What’s your take on the “old vs. modern”. Have you worked with Fortran too? [5/5] Thanks for reading :)

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Since then, I've stood by this: Fortran is not dead. It updates, improves, and stays relevant especially in scientific computing where raw performance matters. It may not be the prettiest language (in fact it is) , but it’s robust, fast, and efficient. It gets the job done without drama. [4/5]

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I first encountered Fortran during my undergrad studies (2010). Many years later, I picked it up again to develop a 2.5D transient electromagnetic modeling code for geophysical applications. I worked on it for the last 4 years and that project shaped the way I approach simulation today. [3/5]

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* Object-oriented code * Use modules and submodules * Implement native parallelism with coarrays * Build #HPC algorithms. * Write #CUDA codes with #CudaFortran * Target modern architectures with performance in mind. * Even some #ANN implementation are based on this amazing language [2/5]

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Marcus Finix @ogmdevlab.bsky.social · 14/02/2025

Let's talk about #Fortran and why so many people think of it as a old language. Maybe because it started in the 1950s. Or maybe because it doesn’t look like Python. But here’s the thing: Fortran has evolved. Today, you can write code such as: [1/5]

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Me han dado unas ganas irresistibles por volver a construir en #C++ Comenzar con, por ejemplo, Exportar mi codigo #FEM en 2.5D de #FORTRAN a #C++ 🤩