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drummers-lowrise
1) Message boards : Sierpinski/Riesel Base 5 Problem : Where are the primes? 2015 edition (Message 89297)
Posted 784 days ago by Profile rebirther
Congrats to the finder for the latest found, another Riesel prime eliminated :)
2) Message boards : Number crunching : Variable deadlines are coming (Message 87515)
Posted 840 days ago by Profile rebirther
How do you tell the server to change the deadline? Its interesting to solve some resends.


The simple answer is we process the trickle and update result.report_deadline. (Processing trickle up messages is a simple process. BOINC puts them in the table msg_from_host, so all you need is a cron that reads messages from there.)

The details are a bit more complex.

We want to keep track of whether the task is making progress, and we also want limits on how much the deadline can be extended.

In workunit.opaque we store the maximum deadline. The trickle handler won't extend the deadline beyond this value. This allows individual workunits to have different max-deadlines, which could be useful when we start doing a different range of tests. Changing Ns in GFN is a good example of where we would do that.

In result.opaque we store the time of the last trickle as well as the percent done. That allows the trickle handler to determine how much progress was made since the last trickle.

And, of course, this only affects the deadline on the server. We can't get the client to recognize the changed deadline.

We probably should be potentially changing the transition time in the workunit, but the system should work fine without that. If you don't change the transition time, it just means there's a possibility that the transitioner will process the WU, do nothing, and reset the transition time to whatever is, at that point, the soonest upcoming deadline. I'm not sure if we're doing this step.



At the moment Iam using the abort function by server, sending an abort signal if the deadline will not reach in time.
3) Message boards : Number crunching : Variable deadlines are coming (Message 87512)
Posted 840 days ago by Profile rebirther
How do you tell the server to change the deadline? Its interesting to solve some resends.
4) Message boards : Sierpinski/Riesel Base 5 Problem : SR5 Update - 2 (Message 85764)
Posted 936 days ago by Profile rebirther
Another prime was found after a long time:

http://primes.utm.edu/primes/page.php?id=119944

Congrats!
5) Message boards : Number crunching : LLR Version 3.8.14 released (Message 84636)
Posted 984 days ago by Profile rebirther
Please be aware of this thread:

http://www.mersenneforum.org/showthread.php?t=20156


Thanks Carlos, we are indeed aware this was coming...


Iain, can you recompile the linux and mac apps? I have done the windows apps but still need the other ones.


Hi Reb,

Jean has not released a new LLR with gwnum 28.6 yet. Until there is an official release, please don't build or distribute old binaries with new libraries. Jean and Mark R (PFGW) have already asked this before when AVX was added to gwnum in 2012. Having unofficial / hacked versions doing the rounds just makes our job a little bit harder if/when bugs are discovered in the future, as it makes it nigh-on impossible to tell which WUs might have been affected.

We will be getting a 'fixed' version of LLR into production at PG as soon as practically possible.

- Iain


I have sent Jean the fixed versions but wait until I get an answer. The chance of the bug should be very small so I could run the current 3.8.13 furthermore.
6) Message boards : Number crunching : LLR Version 3.8.14 released (Message 84628)
Posted 984 days ago by Profile rebirther
Please be aware of this thread:

http://www.mersenneforum.org/showthread.php?t=20156


Thanks Carlos, we are indeed aware this was coming...


Iain, can you recompile the linux and mac apps? I have done the windows apps but still need the other ones.
7) Message boards : Number crunching : Solar Eclipse Challenge (Message 83822)
Posted 1014 days ago by Profile rebirther
It looks like the counter on the frontpage is wrong.

If you're talking about the countdown to the next challenge, it's exactly correct here. Please check the date and time on your computer.


ok, I see, its not pm but am ^^
8) Message boards : Number crunching : Solar Eclipse Challenge (Message 83810)
Posted 1014 days ago by Profile rebirther
It looks like the counter on the frontpage is wrong.
9) Message boards : Project Staging Area : PRPNet 5.3.1 (Message 82414)
Posted 1067 days ago by Profile rebirther
http://www.bc-team.org/downloads.php?cat=7
XP compatible

No, they are not. I found this page early, but no luck. Both "prpnet 5.3.2 -update only -32bit -r31" and "wwwwcl.exe 2.2.5 -win -32bit" from this page have following executable header:

OS version 6.00
Subsystem version 6.00

It must be 5.00 to run on XP and 4.00 for W2K.

Waiting for a new build from Iain.


Are you sure? It was compiled with xp toolset in visual studio 2012. You only need the visual c++ redistributable.
10) Message boards : Project Staging Area : PRPNet 5.3.1 (Message 82395)
Posted 1068 days ago by Profile rebirther
Is it possible to recompile wwwcl with older version of Visual Studio? It does not run on XP anymore. I even can do it myself, is the source available? (I tried to get some PSA credits on a old system with GPU, but geneferocl falls back to CPU mode due to maxerr, which is not fun at all, and wwwcl does not run on XP).

The same question applies to PrpClient itself. Right now I'm running executable from 5.2.8 but I could miss something important.


It's a toolset switch setting -- the current VS is capable of creating XP compatible code, but it's not the default.


http://www.bc-team.org/downloads.php?cat=7

XP compatible


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