New Nbody Version 1.50
Source:  Milkyway@home
mercredi 13 mai 2015 01:31

Hey all,

We have released a new version of Nbody. There are a few changes in this version. First and foremost, we changed the way dark and light matter in our model dwarf galaxy is assigned. Previously, we would have all the particles have the same mass and assign a certain number as dark or light, depending on the parameters of the simulation. This required a large number of bodies in order to get a good likelihood calculation. Now, we will have the same number of dark and light matter particles, but change the mass per light and dark matter particle in accordance to the parameters. This will allow us to lower the number of bodies from 50k to 20k, allowing for a much faster initialization and simulation run time.

Secondly, we have moved the assignment of dark and light matter from lua to c, which should also provide significant speed up in the run time.

Also, we fixed a number of bugs we found in the velocity assignment. All in all, a simulation should run at a fraction of the time previously. This will also hopefully fix the stalling issue some people have been having.

Finally, if you have any runs from the previously version, you can go ahead and abort them.

Since this is a new way of doing things, there may be some unforeseen issues. So, if there are any bugs let us know!

Server up and working
Source:  GPUGrid
mardi 12 mai 2015 17:55

Yesterday and tonight we had a powercut. The sysadmin restarted the machine but he did not realize that apache was not running. Now it should be all fine.

57,634,517 WUs
Source:  FightMalaria@Home
mardi 12 mai 2015 12:08

Damn that's big :)

It "should" work. For now I just created 10,000 WUs, to test the estimation.

The hard work of making discoveries useful
Source:  World Community Grid News and Updates
lundi 11 mai 2015 17:45

Even as World Community Grid computations continue, the team behind the Clean Energy Project is busy improving their database structure, making their results more accessible to the wider scientific community, and authoring papers to disseminate the methodology behind the project. Also, look out for their new project website coming soon!

Firmware Upgrade: Tuesday, May 5, 2015 at 14:00:00 UTC [ Completed ]
Source:  World Community Grid News and Updates
mardi 5 mai 2015 19:38

A firmware upgrade will be performed on Tuesday, May 5th. [ Completed ]

A milestone and a roadmap: progress in the fight against Ebola
Source:  World Community Grid News and Updates
mardi 5 mai 2015 19:12

Thanks to the huge level of support from World Community Grid, the team at the Scripps Research Institute has already received most of the matching data for the first target protein of the Ebola virus. While this data is being analyzed, the search now moves to another related protein with potential to help the fight against hemorrhagic fevers.

Research task availability resumes following unexpected outage
Source:  World Community Grid News and Updates
lundi 4 mai 2015 17:48

Starting on May 3rd, no work units were distributed across all World Community Grid projects due to technical issues which have now been resolved.

New Nbody release tomorrow
Source:  Milkyway@home
mardi 5 mai 2015 01:21

Hey All,

I just wanted to let you know that we will be releasing a version of Nbody tomorrow. I will be more specific on the changes that have been made after releasing. However, this version should hopefully be much faster and fix some other bugs.

193-digit GNFS coming atcha!
Source:  NFS@Home
vendredi 1 mai 2015 22:21

After five GPU-weeks of polynomial selection and a thousand CPU-hours of trial sieving, I've queued up a 193-digit GNFS from the aliquot-sequences project.

For this one I choose parameters to run through c5=1..10^7 in five GPU-weeks, which came out as stage-1 norm of 1e28 and stage-2 of 1e26. The best polynomial came from the first block, with c5=286440. Average yield (over Q=5e7*N .. 5e7*N+1e4 for N=1..8) is just slightly under 1, so I'm sieving 50M..500M to get a good number of relations.

There will be a 190-digit coming in about another three weeks when the polynomial selection's finished.

Nathaniel Stanley's thesis and departure
Source:  GPUGrid
mercredi 29 avril 2015 12:29

Hello all, This past Friday I defended my doctoral thesis, making me the second PhD to be produced thanks to I owe you all a great debt of gratitude for supporting my work. My thesis covered my work on the study of complex binding processes in membrane proteins and disordered peptides. The membrane work was related to the enzyme FAAH and another work we are hoping to publish very soon. The disordered protein work was also a really great surprise for us, and will be continued further. The thesis itself will be published publicly after an embargo period (due to the still-unpublished works it contains). We will post the link as soon as it's available. I must also announce that I will be leaving GPUGRID and moving on. I haven't accepted a position yet, but it is looking like I will be moving to a university in California in the next few months. It is a great opportunity and I'm very excited about it. I will continue to push forward biology with the methods and applications that I have learned working on here. Thanks again and onward, Nate


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