We have just recovered from some unplanned outage of our main webserver that hosts www.distributed.net, blogs.distributed.net, bugs.distributed.net, and some of our other web interfaces. During this time our stats server and our keyserver network remained available and uninterrupted. We’re still investigating the cause, but we hope to minimize the impact of such problems in the future.
distributed.net staff keep (relatively) up-to-date logs of their activities in .plan files. These were traditionally available via finger, but we've put them on the web for easier consumption.
edit: stats now back up, thanks for your patience!
Stats is currently down due to technical difficulties – engineers are working to bring the system back online as soon as possible.
As always, no work will be lost while the site is down – all submitted blocks will be credited as normal.
This past week we passed two nice milestones for our current projects:
On November 21, 2011 we passed 2% completion of RC5-72. We also recently passed 1000 days of OGR-27 since starting it in February 24, 2009.
Long time participant Andrew Hime posted a nice summary of the milestone statistics to our mailing list, so I’ll avoid repeating further details and just link to his post:
Today we also started recycling some of the old RC5-72 subspaces. This means that we’ll be sending out blocks that had initially been distributed as long ago as 2002 but had never been fully completed by any client. Since these subspaces are already mostly complete (generally about 85% to 95% finished), we’ll be able to move through these subspaces pretty quickly. Once we finish this pass of the uncompleted blocks, we’ll resume distribution of blocks from fresh subspaces again.
As always, thanks for your participation and support!
The statsbox is offline at the moment. We’re hoping to get it back online tomorrow. As always, no credit will be lost while it is inaccessible. We’ll update this post with more details later. Thanks!
UPDATE: stats is back online and caught up. Thanks for your patience!
distributed.net is one of the many websites participating in the International IPv6 day. On June 8 2011 starting at 00:00 UTC, we will have AAAA records listed in our DNS for www.distributed.net. Stats and our keyservers will not be affected during this event. For most people you should have no problems continuing to access our website. For further details, check out http://www.worldipv6day.org/
We are pleased to announce that we have recently identified and fixed some bugs in our OGR client codebase. One of them causes the client to skip part of a packet in very rare cases. It can happen only in OGR-27 and above, so previous projects were not affected. Fixes are included in our updated client, v2.9109.518.
Due to the severity of this bug, we decided to change the rules for stub verification. Now not only two returned results must have the same node count, but also at least one of the results must be returned by a fixed (.518) client. Thus we will be sure that no rulers were skipped. Since we have not started the second pass of OGR-27.4 yet, this is an ideal time to introduce a validation change like this.
We’re asking you to update all of your systems to the fixed client, v2.9109.518, as soon as possible. Results sent from older clients will still be accepted and counted in stats. Updating to the latest client will help us to complete the project faster.
The updated client also recognizes the new Intel Core i3 and AMD Phenom processors, which are becoming increasingly popular among budget-conscious consumers.
You can download the updated client for all major platforms at: http://www.distributed.net/Download_clients.
We thank you for your continued participation in this ground-breaking project.
We have new Windows and Solaris 64-bit pre-release clients available for early-adopter testing on http://www.distributed.net/Download_prerelease
The v2.9110.519 release includes two new 64-bit RC5-72 cores that offer an exciting speed improvement. We’ll be working to get the pre-release binaries available some additional platforms soon. As always, please report any bugs you find at http://bugs.distributed.net/
We’ve moved a number of new clients to our official release page:
- AmigaOS [PPC/PowerUp] v2.9109.518
- AmigaOS [m68k] v2.9109.518
- AmigaOS [PPC/OS4] v2.9109.518
- AmigaOS [PPC/WarpOS] v2.9109.518
- Solaris/SunOS [10.x/amd64] v2.9109.518b
- FreeBSD [8.x/sparc64] v2.9109.518
- Linux [AMD64/Stream] v2.9109.518
- Linux [AMD64/ELF] v2.9109.518
- Linux [x86/Stream] v2.9109.518
- Linux [CellBE] v2.9109.518b
- OS/2 [x86] v2.9109.518
- Mac OS X/Darwin [x86/CUDA-3.1] v2.9109.518
- Mac OS X/Darwin [AMD64] v2.9109.518
- Mac OS X/Darwin [x86] v2.9109.518
- PC-DOS, MS-DOS [x86] v2.9109.518
- Windows 64bit [AMD64] v2.9109.518
- Windows 32bit [x86/Zipped] v2.9109.518
- Windows 32bit [x86/Stream] v2.9109.518
- Windows 32bit [x86/Installer] v2.9109.518
- Windows 32bit [x86/CUDA-3.1] v2.9109.518
You can download all of these clients from http://www.distributed.net/Download_clients
A changelog of all of the fixes and features in this new version is available at http://http.distributed.net/pub/dcti/current-client/CHANGES.txt
We’ve made a new public source code tarball available today. Notably, this new tarball contains the ATI/AMD Stream cores for RC5-72, which are in the clients currently on our pre-release page. You can download the new tarball from: http://www.distributed.net/Source
We now have also started making available our public CVS repositories on Github, to make it easier for contributors to access our source. We’re going to be looking at what other parts of our infrastructure are suitable for releasing in the future. You can find our Github organization here: https://github.com/dcti
Keep on crunching!
With 2010 coming to an end, we thought this would be a good time to review the tremendous progress we’ve made this year, particularly on the RC5-72 front.
Modern video cards now typically include highly advanced parallel processors that can sometimes be used for general purpose computing. Although only certain types of tasks are currently suitable for GPU acceleration, we’ve found that RC5 falls happily in that category.
We began beta testing our first GPU-based clients for nVidia CUDA and ATI Stream in January and February 2009, respectively. Public testing of the GPU clients continued for about a year until we officially released both the CUDA and Stream clients in January 2010.
Adoption of the new GPU clients has been very successful throughout 2010, due in part to the folks at DNETC@Home. At this moment, about 86% of our incoming completed RC5-72 results come from Stream clients, 5% from CUDA, and 7% from traditional x86 processors. Another exciting milestone is that the overall total results ever received for the RC5-72 project, results from Stream/Win32 are extremely close to surpassing those received from X86/Win32, despite the nearly 7 year lead before the official release of GPU clients.
At the end of 2009, our overall RC5-72 project keyrate was about 250 GKeys/sec. Our current project rate is now about 1.5 TKeys/sec, or about 6 times faster than last year!
If we started RC5-56 right now (which took us 250 days in 1997), and found the key in the same place as last time, it would take us about 18 hours to complete. If we had to check the entire keyspace… it would be a little longer–perhaps 38 hours!
In the coming year, we hope to announce some other exciting developments which should continue to push the performance and awareness of distributed computing.
If you’re on Twitter, be sure to follow us on @dnetc!
Happy Moo Year!