Posts by Jesús Carro

1) Questions and Answers : Web site : Email notifications don't work (Message 1860)
Posted 25 minutes ago by Profile Jesús Carro
Post:
Hi Peter!
The notification was sent but your email provider rejected it. A problem of consider our email as spam. We will contact them to try to solve the problem.

Best,
Jesús.
2) Message boards : News : Status of the proyect // Estado del proyecto (Message 1859)
Posted 27 minutes ago by Profile Jesús Carro
Post:
Hello!
I am writing this post to summarize a little the news that we have had over the last month. As we have already commented on the forums, we detected a problem with the checkpoint files that caused many windows tasks to end with an invalid result. After several tests and several attempts we have managed to detect where the problem was and solve it. Due to this, we have implemented some of the improvements that we had planned for the checkpoint file. We have made it more robust. We have kept it as beta for quite a few days and it seems that the problem is fixed. We will continue to analyze how the program works, but the percentage of errors that we receive is more than reasonable in a project of these characteristics.

A special thanks to all of you who have been giving us feedback and helping us find the problem.

Today we have re-launched simulations in the NHuVe project. These tasks are no longer beta. We will inform you of the status of that project as we receive results. In the coming weeks we also plan to add tasks to the HuVeMOp project. With both projects working we hope to have a fairly stable flow of tasks.

On the other hand, we have been working on expanding the number of platforms and we have added in beta mode an application for ARM64 on linux (e.g. RaspberryPi), and ARM for Apple (for new Apple chips). We want to see how well they work. If all goes well, in the short term we could also consider expanding to Android.

All the best,
Jesus.

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

Hola!
Os escribo este post para resumir un poco las novedades que hemos tenido a lo largo del último mes. Como ya hemos comentado por los foros, detectamos un problema con los ficheros de checkpoint que hacía que muchas tareas de windows terminaran con un resultado invalido. Después de varias pruebas y varios intentos hemos conseguido detectar dónde estaba el problema y solucionarlo. Debido a esto, hemos adelantado algunas de las mejoras que teníamos pensadas para el fichero de checkpoint y hemos aprovechado para hacerlo más robusto. Hemos mantenido la versión beta durante bastantes días y parece que el problema está solucionado. Seguiremos analizando cómo funciona el programa, pero el porcentaje de errores que recibimos es más que razonable en un proyecto de estas características.

Un agradecimiento especial a todos aquellos que nos habéis estado dando feedback y ayudando en la búsqueda del problema.

Gracias a esto, hoy hemos vuelto a lanzar simulaciones en el proyecto NHuVe. Estas tareas ya no son beta. Os iremos informando del estado de ese proyecto según vayamos recibiendo resultados. En las próximas semanas planeamos también añadir tareas al proyecto HuVeMOp. Con ambos proyectos en marcha esperamos tener un flujo bastante estable de tareas.

Por otro lado, hemos estado trabajando en ampliar el número de plataformas del proyecto y vamos a poner en modo beta una aplicación para ARM64 sobre linux (e.g. RaspberryPi), y ARM para Apple (para los nuevos chips de Apple). Queremos ver qué tal funcionan. Si todo va bien, en un corto plazo nos podríamos plantear también ampliar a Android.

Un saludo,
Jesús.
3) Message boards : Number crunching : ARM/ARM64 (Raspberry Pi) support (Message 1849)
Posted 4 days ago by Profile Jesús Carro
Post:
Hi mogurakun,
The code now is in bitbucket (https://bitbucket.org/comba_usj/denis-myocyte/src/beta/). However, I think it won't be necessary, the ARM64 version is on the way. This morning I have been testing it with CallMeFoxie (seems to work fine), and next week we will start testing it in the project.

It was simpler than I expected.

Next week I will publish a message summarizing the work of these weeks and announcing some news.

Thank you anyway!

Best,
Jesús.
4) Questions and Answers : Web site : Error creating a profile. (Message 1843)
Posted 8 days ago by Profile Jesús Carro
Post:
Hi SP7LX,
I will check what is happening. I'll keep you informed.

Best,
Jesús.
5) Message boards : Number crunching : Myocyte beta 0.18 (Message 1842)
Posted 8 days ago by Profile Jesús Carro
Post:
Thank you grumpy,
Until now, only your two task exit with this error, but I will keep an eye on it.

Best,
Jesús.
6) Message boards : Number crunching : Wikipedia (Message 1841)
Posted 8 days ago by Profile Jesús Carro
Post:
Yes I agree with you. I have updated it, but it is wikipedia, feel free to update all the information you want.

Best,
Jesús
7) Message boards : Number crunching : No new tasks from server (Message 1840)
Posted 8 days ago by Profile Jesús Carro
Post:
The app is working fine and you guys are finishing them much faster... 🙂🙃

New tasks are coming...
8) Message boards : Number crunching : Myocyte beta 0.18 (Message 1830)
Posted 10 days ago by Profile Jesús Carro
Post:
😊

Thank you for all the tests and your patience.

We will keep this version as beta for a few days to be sure that no other problems appear.

Best,
Jesús
9) Message boards : Number crunching : Myocyte beta v0.16 (Message 1826)
Posted 11 days ago by Profile Jesús Carro
Post:
I think we have found the problem... Beta 0.18 uploaded for Windows and Linux (I will do later for MacOS). Could you check?

Thanks!
10) Message boards : Number crunching : Myocyte beta v0.16 (Message 1820)
Posted 13 days ago by Profile Jesús Carro
Post:
Hi Crystal,
Thank you very much for this information. The problem with the v14 was the same: in some circunstances, the checkpoint is partialy saved in windows (we are trying to understand why). When we detect it, it's necessary to restart the simulation (the checkpoint is no valid). In version 14 the simulation was not restarted and, in many cases it generated non valid results. In this version it restarts the simulation but you will send valid results and you will receive credit.

We will continue trying to find why the checkpoints are not working in some windows machines.

Best,
Jesús.
11) Message boards : Number crunching : Myocyte beta v0.16 (Message 1818)
Posted 13 days ago by Profile Jesús Carro
Post:

I've had the same problem
Admins knows the situation


I've uploaded the beta_0.17 that should solve this issue (I hope). Issues with checkpoints are the most difficult to solve, thank you for all the information. It helps us a lot.

Best,
Jesús.
12) Message boards : Number crunching : Myocyte v0.15 Beta (Message 1811)
Posted 14 days ago by Profile Jesús Carro
Post:
Checkpointing seems to be happening every 2 minutes which seems to be a little too frequent.


With a strange behaviour.
I restarted my pc with 4 wus at 88%.
After the restart, 1 wus was at 88%, the others 3 restarted from 0%


Hi!
This is due to the checkpoint issue, but at least now it's detected and reset so you get credit for all the compute time. In some cases, in windows, the checkpoint is not completely saved, and that leaves a corrupted checkpoint. In previous versions, the process continued with the erroneous data and in the validation your result was discarded. Now the program detects it and restarts the simulation so that the results you send are valid and you are given credit.

We know that this behavior is not the best one because in some cases it will act as no checkpoint, but it is an improvement from previous versions. The tasks are not very long so it is not a big problem, but we want to improve it. In the next version we will try a double checkpoint file system (while we create a new checkpoint, the previous one is keept to be sure the program has at least one valid checkpoint). We tried it in a very simple way in version 0.15 and it didn't work, but we will improve it to make it more robust.

The frequency of checkpointing is decided by the boinc client. We do not control it. We only control in what parts of the program it can be done.

Best,
Jesús.
13) Message boards : Number crunching : Myocyte beta v0.16 (Message 1810)
Posted 14 days ago by Profile Jesús Carro
Post:
I want to wait one day more to be sure, but the numbers look good! We will restart the non-beta projects soon.

There are some details that we want to improve with the checkpoints, but, at least now, you won't get non valid results when the computation is done right.

Best,
Jesús.
14) Message boards : Number crunching : Myocyte v0.15 Beta (Message 1805)
Posted 16 days ago by Profile Jesús Carro
Post:
Hi!
We are experience problems with the chekpoint in windows hosts. We have tryed to add a temporary file for the checkpoint to avoid corrupted checkpoints, but it fails when it tries to rename it. As the checkpoint fails, it tries again in all the iterations... for that reason the aplication goes so slow. I will upload a new version solving it as fast as possible.

Many thanks for the comments. Checking your taks it easier to find the problem.

Best,
Jesús.
15) Questions and Answers : Web site : Web site slowness (Message 1788)
Posted 18 days ago by Profile Jesús Carro
Post:
Hi AnandBhat,
Thank you for your comments. I've reduced the size of the logo and I'm reviewing the cache policy. I've added a page quality review to our to-do list.

Best,
Jesús.
16) Message boards : Number crunching : Myocyte v0.14 (Message 1787)
Posted 18 days ago by Profile Jesús Carro
Post:
Thank you!

But at least now it detects that there are problems (although it does not correct them very well...). I have two ideas to reduce the number of errors and to react better when they are detected.

We are preparing version 0.15... will it be the definitive one? 🙈

Best,
Jesús.
17) Message boards : Number crunching : No tasks sent (Message 1786)
Posted 18 days ago by Profile Jesús Carro
Post:
Welcome stratos412!
18) Message boards : Number crunching : Myocyte_Beta 0.12 (Message 1780)
Posted 20 days ago by Profile Jesús Carro
Post:
Hi,
Beta 0.12 and 0.13 are the same program as 0.11 but giving us more information in the logs to try to find the problem.

I've uploaded beta_0.14 with a modification that could solve the problem... It is difficult to test the application when the problem appears during saving/loading checkpoints. I will try to improve it, but at least now, the program should be able to detect and discard corrupted checkpoint files.

Best,
Jesús.
19) Message boards : Number crunching : WUs for GPUs (Message 1770)
Posted 22 days ago by Profile Jesús Carro
Post:
Hi AkasPDM,
Not in the short/medium term. We have an idea for a new type of simulations that would greatly benefit from GPU power, but it's a big project.

Best,
Jesús.
20) Message boards : Number crunching : New human ventricular cell model for mac ? (Message 1769)
Posted 22 days ago by Profile Jesús Carro
Post:
Hi Jerome,
I compile Linux and Windows in the same computer but I need to use a different computer to compile for MacOS. I do not always have it available and that is why there is no application in Beta all the time. This will change throughout the summer with the new infrastructure that we are setting up thanks to a new grant.

I just uploaded a version for apple in the Beta app (v0.13).

Best,
Jesús


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