DENIS@Home Update

[Dingo]

[DENIS@Home] Hard drive space crisis solved // Crisis de espacio en el disco duro resuelta
Dear volunteers,
This weekend we have broken a new record for computing Teraflops (since we are in this new stage of the project). This is thanks to the pace of sending results that you have been doing in recent days and being more stable in the generation of work packages.

Although we were monitoring it, the coincidence of this peak with the database backup on the weekend has caused the hard drive to become saturated sooner than expected. We have been working since Monday on moving data out of the server and even other processes, but as we gained space it kept filling up with results that were pending upload.

This morning, for the first time in two days, more tasks have been validated than have been received and little by little normality will return. At first, it doesn't seem like anything has been lost and we are already submitting work again.

We have expanded the space to receive results and are working on automating some of the tasks to ensure we can continue to grow.

Thank you all very much, if we have this type of problems it is because of the great support you give us, we will continue working to grow by your side.

Sorry for not answering in the forums, and thank you very much for be aware of the evolution.

All the best,
Jesus.

=====================================================

Estimados voluntarios:
Este fin de semana hemos batido un nuevo record de Teraflops de computación (desde que estamos en esta nueva etapa del proyecto). Esto es gracias al ritmo de envío de resultados que estáis haciendo en los últimos días y de estar más estables en la generación de paquetes de trabajo.

Aunque ibamos monitorizándolo, la coincidencia de este pico con la copia de seguridad de la base de datos en el fin de semana ha hecho que se saturara el disco duro antes de lo esperado. Hemos estado trabajando desde el lunes en mover datos fuera del servidor e incluso otros procesos, pero según ganábamos espacio se seguía llenando con los resultados que estaban pendientes de subir.

Esta mañana, por primera vez en dos días se han validado más tareas de las que se han recibido y poco a poco se irá retomando la normalidad. En principio, no parece que se haya perdido nada y ya estamos enviando trabajo de nuevo.

Hemos ampliado el espacio para recibir resultados y estamos trabajando en automatizar algunas de las tareas para garantizar que podemos seguir creciendo.

Muchas gracias a todos, si tenemos este tipo de problemas es por el gran apoyo que nos dais, seguiremos trabajando para crecer a vuestro lado.

Disculpad que no haya contestado en los foros, muchas gracias por estar tan pendientes de la evolución.

Un saludo,
Jesús.

View article · Wed, 13 Mar 2024 09:20:04 +0000

[Dingo]

[DENIS@Home] Project progress and summer period // Avance del proyecto y período estival
Dear volunteers,
First of all, please excuse me because I wanted to send this message a week ago, but I was not able to do so. As you have seen these days, just like last year, we are entering the summer period, and the rate of sending simulations will be affected. We hope that it does not stop completely, but the sent tasks will be reduced.

I take this opportunity to update the results of the last months: you have been optimizing one of the most used human ventricle models: the O'Hara and Rudy model. We have tested several optimization configurations and have obtained a new adjustment for the model that improves its behavior in relation to a large number of markers reported in the scientific literature. There is still a configurations that has not been finished, but we are already beginning to prepare a scientific publication that summarizes our results. As soon as it is finished and published (it is a long process), we will share it with you and explain it.

In the coming months we will begin to optimize a version of this widely used model, which is the basis of a new model we are developing to study heart failure. We will take advantage of this change in model to automate some things, so the slow pace of summer may be a little longer at the beginning of the school year, but with the objective that the pace will not slow down afterwards.

Thank you all very much for your understanding, and this afternoon, new tasks.

Best regards,
Jesus.
View article · Mon, 29 Jul 2024 11:12:12 +0000

[Dingo]

[DENIS@Home] Status of the project // Estado del proyecto
Dear Volunteers,

As you may have noticed, the task hiatus has extended longer than we would have liked. I apologize for not writing sooner, as I was hoping we could launch something earlier. However, given our current workload and the steps required for the new simulations, there will be no new tasks at least until the end of February.

I apologize for this decrease in activity; we will return as soon as possible.

Sincerely,
Jesús.

[Dark Angel]

Can anybody else get their boinc client to contact Denis?  Mine just keep complaining about a permanent http error but the few responses I've had on their forum say there's nothing wrong.

[Abruraspingi]

It's not like they've had any tasks for a while anyway

I just did an update and it came through fine

[Abruraspingi]

Attached image

[Abruraspingi]

Just jumped on another Windows computer and added the project and it came up fine (I haven't tested Linux)

[Dark Angel]

I added it to the boinc instance in a VM and it came through fine but my three actual machines all get errors every time.  I removed it from my main rig and tried to re add the project but it kept coming back that it wasn't a valid boinc project.  When I do an update it says:
Sat 22 Mar 2025 15:58:23 | DENIS@home | Scheduler list fetch from https://denis.usj.es/denisathome/ failed: permanent HTTP error

Same error on all three machines, all three are on linux.

[Abruraspingi]

Which Linux are you using? I'll see if I can replicate it

[Dark Angel]

Mint 22.04 on my desktop and latest Ubuntu Server on my headless machines.

[Abruraspingi]

Someone in the Denis forum said they had issues with Mint but no resolution was found. I'm surprised about Ubuntu.

When I get a chance I'll check it out

[Abruraspingi]

Mint was pretty easy to get around. I had the same issue that you had trying to add Denis. My initial thought was firewall but that's turned off by default.

Looks like a lot of other people have the same issue as you have where they can't add a project on Linux Mint. Since Mint is derived from Debian it makes sense that Ubuntu would have a similar issue.

Debian kinda composes it's own version of BOINC so I'm tempted try installing it from Flatpak or from GIT and see if that makes a difference

[Dark Angel]

While the Boinc client on my server installs is the one from the repositories the one on my desktop I compiled from source.
I managed to get around the attachment issue by using the command line attach_project command and my account key.  None of them will connect to the server though, always returning a "permanent http error"

[Dingo]

[DENIS@Home] We are back! // ¡Estamos de vuelta!
Dear volunteers,
We are back! The wait has been longer than we would have liked, but surprisingly, what we bring comes sooner than we expected. Ivan Royo has been working this term on the 1D version of DENIS (denis-fiber) and we already have a first version to start testing. It is a fairly advanced version of what will be the final one (still without checkpoints), but at this point it is very useful to start testing to see that everything is going well and to polish the last details.

Thanks to a grant from the Ministry, Iván is studying how cellular differences (interpatient variations) affect the propagation of the electrical impulse in the heart, and for this we need to scale up. If the tests go well, we will start running simulations within this new project. For now, they are all functional tests. We will start with manageable simulation sizes and gradually increase the number based on how the server responds and our post-processing capacity.

The optimization of the models is still pending as well, I hope we can resume it soon.

Best regards,
Jesús.

================================================================================

Estimados voluntarios:
¡Estamos de vuelta! La espera ha sido más larga de lo que habríamos querido, pero sorprendentemente, lo que traemos viene antes de lo que esperábamos. Ivan Royo ha estado este curso trabajando en la versión 1D de DENIS (denis-fiber) y ya tenemos una primera versión para empezar a hacer pruebas. Es una versión bastante avanzada de lo que será la final (aún sin chekpoints), pero en este punto nos viene muy bien poder empezar a hacer pruebas para ver que todo marcha bien e ir puliendo los últimos detalles.

Gracias a una beca del Ministerio, Iván está estudiando cómo afectan las diferencias celulares (variaciones interpaciente) en la propagación del impulso eléctrico en el corazón, y para ello necesitamos subir de escala. Si las pruebas van bien, comenzaremos a lanzar simulaciones dentro de este nuevo proyecto. De momento son todo pruebas de funcionamiento. Vamos a empezar con tamaños de simulaciones manejables e ir aumentando el número para cómo va respondiendo el servidor y nuestras capacidad de postprocesado.

La parte de la optimización de los modelos está aún pendiente también, espero que podamos retomarla en breve.

Un saludo,
Jesús.

View article · Wed, 26 Mar 2025 09:09:41 +0000

[tazzduke]

Awesome news, have thrown some cores on to the testing of the new workunits.

Got my Win11 machine going, about to test my Xeon shortly.

Happy to see the good news with this project.