Skip to content

Home

  • in diario
  • 1 min read

diary record

Si te sientes como un idiota, significa que estás en el camino correcto y debes seguir a pesar de todas las dudas. También podría ser que eres un idiota.

  • in diario
  • 1 min read

diary record

I listened today to one data scientists' job interview. While answering on how to deal with LLMs' hallucinations, he put it like actually all these models do is hallucinate, and occasionally their hallucinations coincide with reality. That was a good one. AI in a nutshell.

  • in diario
  • 1 min read

diary record

Ayer fue un dia libre, y pasé enfrente de ordenador solo una hora. El dia sin ordenador - una sorpredamente buena experiencia.

How to ask questions

Bookmark: How To Ask Questions The Smart Way

Before You Ask

Before asking a technical question by e-mail, or in a newsgroup, or on a website chat board, do the following:

  1. Try to find an answer by searching the archives of the forum or mailing list you plan to post to.
  2. Try to find an answer by searching the Web.
  3. Try to find an answer by reading the manual.
  4. Try to find an answer by reading a FAQ.
  5. Try to find an answer by inspection or experimentation.
  6. Try to find an answer by asking a skilled friend.
  7. If you're a programmer, try to find an answer by reading the source code.

  • in diario
  • 1 min read

diary record

When I was a student, I have written a little program to model a glissade of a descending plane, as a part of some study task. Not a rocket science, still involved an itty-bitty pinch of differential equations, required some effort (and was not fun). That resulted with a thin white line on a black screen.

Anyone seeing it shrug their shoulders, like "ok, nice".

Also I was interested in graphical effects, and I can tell you that modelling flame is a basic arithmetics. Initialize a bottom of your display matrix with random (or you can play with it) colors, then go over every pixel calculating average of values of surrounding ones, and put that result one pixel higher. Looks awesome. Anyone seeing result was like "wow, you're a hacker man!".

Here probably should be some kind of morale but to be honest, I love that flame effect better myself.

No /var/run/postgresql/.s.PGSQL after reboot (Ubuntu)

Rebooting the server, bumped into the following error, preventing my django server from functioning: psql: error: connection to server on socket "/var/run/postgresql/.s.PGSQL.xxxx" failed: No such file or directory

Not to easy to search the solution, tons of search spam (and of course stupid advises "purge porstgresql including databases and all the files and reinstall".

Thanks to Abdallah: https://www.abdallahyashir.com/how-to-fix-postgresql-error-connection-to-server-on-socket-failed/

Shellscript

    $ sudo -i -u postgres
    $ /usr/lib/postgresql/14/bin/pg_ctl restart -D /var/lib/postgresql/14/main
  • in diario
  • 1 min read

diary record

Cloud workflows are another level of a mess, not quite a news, is it? A peculiar case of my little struggle with chaos - devops does not have capacity to assign me the access to some db. And I have to deliver little code, involving the other code (not mine), involving that db. Yay, workaround - I do have an access to deployment pipeline, which spins up the container with the access to that db. So my journey is like a hangman game - assume, change code, deploy (10 minutes), check. Trying restart the app within that container relaunches the container. So, this is the way. And I have some time to write this grumpy post.