SETI@Home News

[EEH]

January 20, 2006 - 23:30 UTC
The master science database merge is complete. All validated signals ever returned by Classic and BOINC SETI@home clients are currently on one single server. Now we may begin our next phase of scientific data analysis programming.
The final step of the merge started on Monday and took longer than expected, resulting in us running out of work to send out. This no-work state lasted for over a day, but we are now back online back up and serving workunits. The merge actually finished yesterday, but due to compilation issues with new splitters and assimilators we couldn't get generate any new work until just now. Of course, like all extended outages, it may be a while before everything "catches up".

Berkeley ha finito il merge del "SETI Classic" e "SETI Boinc" databases. Adesso possono continuare con l'analisi scientfico di tutti i risultati. Il prossimo passo e implementare l'analisi in tempo reale cosi che noi potremo vedere subito, nel nostro account del home page, se ce' qualcosa d'interesante nelle nostre caccole . . . e via con lo scaccolo selvaggio

[Valuk]

Fantastico! hai qualche link per vedere i segnali interessanti e i nick degli utenti che li hanno scoperti?

[GHz]

Originariamente inviato da EEH

Berkeley ha finito il merge del "SETI Classic" e "SETI Boinc" databases. Adesso possono continuare con l'analisi scientfico di tutti i risultati. Il prossimo passo e implementare l'analisi in tempo reale cosi che noi potremo vedere subito, nel nostro account del home page, se ce' qualcosa d'interesante nelle nostre caccole . . . e via con lo scaccolo selvaggio

Finalmente questo merge è finito!

Speriamo che implementino quel sistema di visializzazione dei risultati presto!

Con la frase "next phase of scientific data analysis programming" penso che si riferiscano alla nuova verisione del client seti@home (Enhanced), che a breve verrà rilasciata.

Ciao,
GHz

[EEH]

February 14, 2006
BOINC and Climateprediction.net have joined forces with the BBC to launch a new experiment, a full simulation of climate change from 1920 to 2080, described on a BBC television documentary Meltdown (BBC-4, February 20th, for UK BOINCers). SETI@home participants can attach to http://bbc.cpdn.org (be warned that a 160-year climate simulation is a long workunit even by Climateprediction.net's extravagant standards).

Ce' una grandissima iniziativa qua' in Inghilterra per questi nuovi modelli di Climate Prediction . . . sulla tv, radio ecc. Questi modelli sono molto piu' completi e tengono in considerazione anche la temperatura del mare. Sono anche piu' grandi e dicono che ci mettera' 2,3 mesi a finire una caccola. Quello che si spera e' che con questi modelli quasi 'reali' gli Americani facciano finalmente caso ai risultati trovati.

[Giusnico]

Non riesco a fare l'attach a questo nuovo progetto di Climate. Mi dice che il mio indirizzo email è già in uso, e questo accade qualsiasi indirizzi email io metta

[EEH]

Originariamente inviato da Giusnico

Non riesco a fare l'attach a questo nuovo progetto di Climate. Mi dice che il mio indirizzo email è già in uso, e questo accade qualsiasi indirizzi email io metta

Ciao Giusnico
Tante persone avevano lo stesso problema ce' >> Questo Thread << . . . dicono che adesso hanno risolto. Azz con la BBC Climate Prediction e' riuscita nella scorsa settimana ad ottenere piu' registrazioni che negli ultimi 12 mesi.

Altre notizie da SETI@Boinc:

February 16, 2006 - 23:00 UTC
Today we had another quick database backup/compression, and then upgraded the MySQL version again (to the latest 4.1.x). It was a painless upgrade, and a couple problems seemed to have cleared up. Most notably, users are now able to "merge computers" again via our web site. This query had been locking up the system.

February 14, 2006 - 23:00 UTC
We had a couple of outages over the past few days. One was unintentional - we are still having database lock issues involving the "merge computer" function on our web site, and this was turned back on accidentally.

Yesterday we had a standard database backup/compression. We're going to begin doing these twice a week as we continue to figure out why we are having throughput issues.

Today we replaced a disk enclosure that was part of our workunit storage array. It was a relatively painless procedure except that the system wasn't recognizing the old disks upon restart. Eventually this was diagnosed: The system's qlogic fibre channel card needed a configuration "refresh." This required hooking up a console and simply entering/exiting the BIOS without editing anything. Anyway, the whole system is back up and running now.

Hanno finito l'upgrade del MySQL database e si puo' fare il merge dei criceti.

[EEH]

Wow SETI.Germany e' salita di 20,000 cobblestones in una settimana e si e' ripresa la 1' posizione nella >> Classifica RAC Mondiale << . . . non si sono mica impauriti dalla forza brutta del SETI.USA

Direi le ultime notizie da S@H spiegano quale' l'ultima arma dei tedeschi:

February 19, 2006
BOINCcast is the first German Podcast about BOINC. Weekly episodes of 5 minutes length will explain Distributed Computing and the Goals of BOINC to the German public, and will present and explain the projects that use BOINC.

Se qualcuno capisce tedesco puo' visitare >> BoincCast <<.

BoincCast in Italiano funzionarebbe? . . . una lezione settimanale dal maestro & co da non perdere . . . e forse una maglietta gratis ogni mese per il piu' bravo scaccolatore (Il Manu per lo sponsorship e Chobo come risponsabile ).

[GHz]

Hanno aggiunto una pagina sui futuri sviluppi -> http://setiathome.berkeley.edu/sah_plans.php

[EEH]

March 30, 2006 - 22:30 UTC
Okay. We seem to be out of the woods for now. We vastly reduced the size of the result table in the BOINC database. How? By clearing out the results-to-delete queue, and by cranking up db_purge so that it removes all results from the database as soon as they are deleted from disk. Under normal circumstances we keep at least a days' worth of old result rows around so participants can see those recently finished in their personal lists. Over the weekend we'll keep this clamped down for observational and catch-up purposes. Next week we might relax the db_purge parameters to allow completed result rows to linger like before.

Anyway.. having a shrunken database has enabled most of it to fit in RAM, which has vastly improved performance for now. This will change quickly, of course, as we continue to grow (and tables get fragmented on disk), but we are hoping to obtain more memory (4x2GB Dimms for a Sun v40z) very soon.

As a side note, it should be mentioned that the old SETI@home classic data server (a big ol' Sun E450) has proven itself still quite useful during yesterday's server closet reconfiguration outage. Since it is fairly large and on sturdy wheels, it made a perfectly good cart for transporting heavy rack hardware from the lab into the closet.

March 30, 2006 - 00:30 UTC
Today we had an outage to finally move some of the newer (and very noisy) hardware into the server closet. Namely, the Sun v40z which has been the main BOINC database for the past year or so and the Dell linux server which is the boinc.berkeley.edu webserver and alpha project, among other things. Moving out of the closet was cyclops, a Sun 450 which held the Classic "non-master" science database. Soon we will backing up that old data and dropping it.

Quindi adesso tutto a posto con il database!