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Old 2007-09-24, 20:55   #1
Prime95
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Default Prime95 version 25.5

THIS IS A PRE-BETA VERSION - NOT FOR EVERYDAY USE

The Windows, Linux, and Mac OS X versions of 25.5 are now available. If you are running version 25.4 you can install the new version on top of the old version.

Steps to install version 25.5
---------------------------

1) DO NOT INSTALL OVER VERSION 24. If you have problems, you want to be able to revert to testing using version 24. There will be outages on the new server so you'll want to let version 24 run at lower priority to soak up those available CPU cyles.
2) Create a new directory, download ftp://mersenne.org/gimps/p95v255a.zip, unzip into this new directory.
3) PM or email to get the secret line to add to prime.txt so that this version contacts the new server.
4) Run version 25.5. Follow the link in the dialog box to create a userid. Choose a work preference of either "Trial factoring to low limits" or "ECM on small Mersenne numbers".
5) Find problems. Report them to me.

Known bugs
-----------

1) Time= option in prime.txt does not work.

Links to other versions
---------------------
Linux - ftp://mersenne.org/gimps/mprime255.tar.gz
Linux 64-bit - ftp://mersenne.org/gimps/mprime255a-linux64.tar.gz
Windows 64-bit - ftp://mersenne.org/gimps/p64v255.zip
Mac OS X - ftp://mersenne.org/gimps/mprime255-MacOSX.tar.gz

Last fiddled with by Prime95 on 2007-09-27 at 03:10 Reason: links updated
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Old 2007-09-24, 20:58   #2
Prime95
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This version fixes the nastiest of 25.4 bugs - namely the memory leaks under linux and ECM not abiding by the memory settings in Options / CPU.

New in this release is the ability to merge MDI windows together. This lets you mimic version 24's single-window look and feel. Also, a volunteer has contributed code to remember the MDI window coordinates on exit.
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Old 2007-09-24, 23:15   #3
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Thanks. Testing on A64 processor now.
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Old 2007-09-25, 00:23   #4
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I'm getting SUMOUT errors at once when ECM factoring with the 64bit Linux client on an AMD Opteron CPU:
Code:
[Main thread Sep 25 02:16] Mersenne number primality test program version 25.5
[Main thread Sep 25 02:16] Starting worker threads.
[Comm thread Sep 25 02:16] Getting assignment from server
[Comm thread Sep 25 02:16] URL: http://v5.mersenne.org/v5server/?v=0.95&px=GIMPS&t=ga&g=be320c6b3f1f6118b05822dee86976d5&c=1&ss=48309&sh=818BE3141845DB844C3D05FF7ECAB7A4
[Worker #1 Sep 25 02:16] Work thread starting
[Worker #2 Sep 25 02:16] Work thread starting
[Worker #1 Sep 25 02:16] Using FFT length 28K
[Worker #1 Sep 25 02:16] ECM on M541339: curve #1 with s=6140421874546546, B1=50000, B2=5000000
[Worker #2 Sep 25 02:16] Using FFT length 28K
[Worker #2 Sep 25 02:16] ECM on M541369: curve #1 with s=6203598503650067, B1=50000, B2=5000000
[Worker #1 Sep 25 02:16] SUMOUT error occurred.
[Worker #1 Sep 25 02:16] Waiting five minutes before restarting.
[Worker #2 Sep 25 02:16] SUMOUT error occurred.
The computer passes the 28K torture test, and I've just run a 24 hour torture test with 24.14 on the machine. Trying all tests now with 25.5.
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Old 2007-09-25, 11:39   #5
ATH
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How do you add an extra computer to the same username? When I try 25.5 with my username on another computer it says:

"Untrusted Program versions currently excluded by Primenet."

and prime.txt is set up to contact v5 server.
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Old 2007-09-25, 11:48   #6
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Quote:
Originally Posted by Prime95 View Post
New in this release is the ability to merge MDI windows together. This lets you mimic version 24's single-window look and feel. Also, a volunteer has contributed code to remember the MDI window coordinates on exit.
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Old 2007-09-25, 12:25   #7
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Quote:
Originally Posted by Prime95 View Post
The link is broken, even though it doesn't really matter, since it's not there yet. Here's a fixed link to it:
ftp://mersenne.org/gimps/mprime255-MacOSX.tar.gz
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Old 2007-09-25, 14:56   #8
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I can confirm that the memory leak in linux is fixed.

Priorities are fixed, sort of. I had "Priority=1" which is the default in my prime.txt. When the version starts up it behaves as a linux process with nice value 19 (the lowest priority) should behave. Up to this point all is well. However, in top the nice column shows up as 0. It shows up as 19 for v24. And using renice to change priority in Linux changes the nice value shown in top but has no impact on the share of CPU mprime is getting.
If I change the priority setting in prime.txt, the priority is again set as it should be - the process takes up the right amount of CPU but the nice column shows a zero and renicing has no impact on the CPU share.


I'll keep an eye out for the hang/comm problem and report back in a day or two if all goes smoothly.

Last fiddled with by garo on 2007-09-25 at 15:03
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Old 2007-09-25, 16:09   #9
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I don't know if this is the right place to report feature requests etc. but if the RollingAverage issue has not been fixed yet, can it be looked at? My theory on what is going wrong is given here:
http://www.mersenneforum.org/showthr...064#post115064
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Old 2007-09-25, 17:20   #10
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Quote:
Originally Posted by ATH View Post
How do you add an extra computer to the same username? When I try 25.5 with my username on another computer it says:

"Untrusted Program versions currently excluded by Primenet."

and prime.txt is set up to contact v5 server.
I found that forcing a manual communication after getting that error fixed things.
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Old 2007-09-25, 19:35   #11
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I hate to say it.... but I think there is still a memory problem...

PC settings/parameters

Windows Vista
2GB RAM
Quad Core Pentium 2.93Ghz

25.5 options
4 instances running
3 TF (150Mb allocation to each)
1 ECM (1000MB allocation)

What I saw (Problem)

I noticed my PC was sluggish when I got home. So I did a few checks. the instance of 25.5 running ECM was using higher than allocated amounts of RAM. Set to use 1000 (and stating in the worker window using 909Mb in stage 2) it was actually using about 1.2GB

What I did (Action/Result)
Exponent M1063523
  • Paused all instances then restarted all (within a few seconds the ECM instance was back up to 1.2GB)
  • Paused all instances then started just the ECM instance (again it started hogging 1.2 Gb)
  • Exited all instances then started only the ECM instance (guess what... back to 1.2 Gb again)
  • Set the memory back down to 500Mb and let it complete that exponent (ran fine and within memory allocation)
  • Let it run the next 2 exponents M291043 and M450719 at 1000Mb (no problems, they ran fine)

Exponent M1063523
  • Run at 1000Mb (the second stage 2 ECM hit [Sep 25 20:05] Using 909MB of memory in stage 2. the memory usage started ramping up to 1.2GB)
  • I switched back to 500Mb during this exponent (the memory usage sat at 600Mb)

So from what I can see at either FFT length 56k or on exponents above 1M (or both) with the memory set to above 909MB P95 starts munching extra RAM. Hope this is useful.

Geroge I took screen dumps of P95 and my resource monitor at all of the things I stages above and zipped a copy of the instance in case you want any of that for addtional info. Just give me a shout if you need them and I'll mail them to you?

Cheers

PS - The minimise button on the windows seems to have stopped working?

Last fiddled with by Bundu on 2007-09-25 at 19:38
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