Forum: Information & Answers
2016-12-11, 07:04
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Replies: 1
Views: 1,120
Adding M(37156667) to OEIS
Exponents of Mersenne primes are forming one of the core sequences in the "Online Encyclopedia of Integer Sequences", https://oeis.org. As of today the 45th exponent is not yet added there. Does...
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Forum: Information & Answers
2016-01-28, 17:13
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Replies: 3
Views: 1,267
Unable to detect logical CPUs
I changed the processor in my computer, now it's a i7-3820, which is a model with hyperthreaded logical CPUs. When I run prime95 on that processor I get the message: "Unable to detect one of the...
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Forum: PrimeNet
2009-11-15, 21:49
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Replies: 1
Views: 839
Untrusted software version
After having upgraded the CPU in one of my computers, Primenet complaines about the Prime95 version on this computer. In Primenet's list of my computers (My account -> CPUs) there is a yellow point...
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Forum: Software
2009-11-01, 12:23
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Replies: 9
Views: 2,047
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Forum: Software
2009-10-31, 09:18
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Replies: 9
Views: 2,047
Installing mprime on Linux
Recently I got a 4 year old Linux server as a gift but I'm not familiar with linux yet.
Trying to install mprime I came into some trouble. Opening mprime from the Gnome GUI (compared to what I...
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Forum: Information & Answers
2009-03-23, 22:06
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Replies: 2
Views: 641
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Forum: Hardware
2009-03-22, 13:06
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Replies: 8
Views: 1,237
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Forum: Hardware
2009-03-22, 07:56
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Replies: 8
Views: 1,237
Overclocking and reliability
Recently I chose new settings for CPU and RAM which made my computer 10% faster. Today the computer finished an exponents's LL-double-check. I looked up the "exponent status" in GIMPS and found the...
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Forum: Information & Answers
2009-03-21, 12:31
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Replies: 2
Views: 641
New CPU
I changed the CPU in one of our computers. Now it's a AMD 5050e. In GIMPS's page "MyAccount > CPU" which is rendering computer properties, the CPU model is "AMD processor model unknown". It doesn't...
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Forum: Information & Answers
2009-03-07, 14:04
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Replies: 6
Views: 3,847
Thank you for responding.
Your explanation...
Thank you for responding.
Your explanation of "confidence level" is according to what I see in the statistics Prime Net is recording. But what is it about "reliability"? Many of our machines got...
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Forum: Information & Answers
2009-03-07, 07:45
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Replies: 6
Views: 3,847
Reliability and confidence level
In GIMPS's assignment rules two terms are used: "confidence level" and "reliability". How are they defined and measured? Can I find the values of my CPUs somewhere?
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Forum: PrimeNet
2008-12-23, 08:35
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Replies: 4
Views: 807
Terminating GIMPS membership
One member of our GIMPS group is intending to end his participation when his computer will have finished LL testing of his actual exponent.
This computer is the only one that isn't upgraded to...
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Forum: PrimeNet
2008-12-21, 16:01
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Replies: 1
Views: 1,184
Strange history
One of our exponents has a history I can't believe.
49705651
No factors below 2^67
P-1 B1=595000, B2=18593750
Assigned Trial factoring to "Gymnasium_Raubling" on 2008-12-19...
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Forum: Software
2008-12-09, 05:27
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Replies: 4
Views: 1,089
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Forum: Software
2008-12-08, 17:35
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Replies: 4
Views: 1,089
I'd better give you more datails about what...
I'd better give you more datails about what happened.
I terminated prime95. Then I started it again, but not by a reboot. I started it directly by a doubleclick on prime95.exe. When I did that I was...
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Forum: Software
2008-12-08, 06:03
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Replies: 4
Views: 1,089
Cannot open spool and log file
I did something wrong, but don't know what. On start up Prime95 tells me it cannot open spool and log file any more.
Anybody can help me?
lidocorc
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Forum: Software
2008-11-30, 14:46
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Replies: 3
Views: 2,895
Double check LL test faster than first run test
Why is a double check LL test about twice as fast than a first run LL test?
As far as I understood LL testing the number of iterations has to be the same for both kinds of LL tests. Is it because...
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Forum: Software
2008-11-08, 07:33
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Replies: 2
Views: 1,547
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Forum: Software
2008-11-07, 05:17
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Replies: 2
Views: 1,547
My CPU is getting faster and faster ;-)
According to undoc.txt I'm using "CumulativeTiming=1" in prime.txt. As a result p95 outputs iteration times like this:
[Nov 6 15:01] Worker starting
[Nov 6 15:01] Setting affinity to run worker...
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Forum: PrimeNet
2008-11-06, 14:39
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Replies: 4
Views: 1,258
Why trial factoring work chopped into chunks?
My computer is doing trial factoring of exponents in the range around 58 million. S485122 posted in the "Math" subforum (31 Oct 08) these exponents are intended to be scanned for factors up to 2^70....
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Forum: Software
2008-11-05, 23:05
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Replies: 11
Views: 1,303
More work for my "workers"
On my dual core CPU PC one prime95 worker is doing trial factoring (the other LL tests). GIMPS give me at most 15 exponents for trial factoring. Clearing one exponent takes one and a half hours in...
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Forum: Software
2008-11-02, 07:52
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Replies: 18
Views: 1,572
@starrynte
It's as you write. But is shared...
@starrynte
It's as you write. But is shared cache memory such a bottleneck, that it reduces performance that much?
@dan3ny
No. I'm experiencing 100% CPU load.
I wonder what would happen if...
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Forum: Software
2008-11-02, 07:41
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Replies: 2
Views: 805
Memory usage during P-1 factoring
Is p95 faster if I give it more memory during stage 2 of P-1 factoring? The workers window shows: The more memory, the more relative primes are being processed at a time. (Now it's 70 relative primes...
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Forum: Software
2008-11-01, 07:05
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Replies: 18
Views: 1,572
LL test with V25 much slower than with V24
LL test with v25.7 much slower than with v24.14
Since yesterday I'm using the new Version 25.7 instead of 24.14 on my AMD X64 dual core CPU driven machine. Up to yesterday I ran only one core with...
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