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drummers-lowrise
1) Message boards : Number crunching : What can we expect from Zen 2/Ryzen 3000? (Message 131090)
Posted 196 days ago by Profile rebirther
Is there any mainboard prefer gigybyte X570 without a heatpipe fan?
2) Message boards : Number crunching : What can we expect from Zen 2/Ryzen 3000? (Message 131043)
Posted 199 days ago by Profile rebirther
The 16-core 3950X is not released until September.


3700, 3800, 3900 is also ok, I need to compare with mine.
3) Message boards : Number crunching : What can we expect from Zen 2/Ryzen 3000? (Message 131016)
Posted 200 days ago by Profile rebirther
Iam interesting in time per bit for different subproject factors, so we can see the results for AVX, AVX2, FMA3 on AMD and Intel. Then I know how slow is my old AVX CPU.

If anyone has a 3950x thats my favourite.
4) Message boards : Number crunching : LLR 3.8.23 released (Message 128882)
Posted 281 days ago by Profile rebirther
How did you get the time per bit info? The stderr for my completed tasks doesn't that level of detail.

That's what the -d command line option does. You can see it in the command line that was posted.


Yes, I see that. But how is it used? Does it go somewhere in the app_info.xml or app_config.xml? Or some other method?


The easiest way is standalone. Create a batchfile in windows with line llr -d -q"8*836^262046-1" -tx (x for cores), -q any number you want to test and llr.exe must be in the same folder
5) Message boards : Number crunching : LLR 3.8.22 released (Bugged. Do not use yet.) (Message 128470)
Posted 301 days ago by Profile rebirther
Just for testing with gwnum 29.7 (64bit only) download
6) Message boards : Sierpinski/Riesel Base 5 Problem : Where are the primes? 2015 edition (Message 89297)
Posted 1556 days ago by Profile rebirther
Congrats to the finder for the latest found, another Riesel prime eliminated :)
7) Message boards : Number crunching : Variable deadlines are coming (Message 87515)
Posted 1612 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.
8) Message boards : Number crunching : Variable deadlines are coming (Message 87512)
Posted 1612 days ago by Profile rebirther
How do you tell the server to change the deadline? Its interesting to solve some resends.
9) Message boards : Sierpinski/Riesel Base 5 Problem : SR5 Update - 2 (Message 85764)
Posted 1708 days ago by Profile rebirther
Another prime was found after a long time:

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

Congrats!
10) Message boards : Number crunching : LLR Version 3.8.14 released (Message 84636)
Posted 1756 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.


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