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Search: Posts Made By: lidocorc
Forum: Information & Answers 2016-12-11, 07:04
Replies: 1
Views: 410
Posted By lidocorc
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...
Forum: Information & Answers 2016-01-28, 17:13
Replies: 3
Views: 987
Posted By lidocorc
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...
Forum: PrimeNet 2009-11-15, 21:49
Replies: 1
Views: 519
Posted By lidocorc
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...
Forum: Software 2009-11-01, 12:23
Replies: 9
Views: 1,486
Posted By lidocorc
Thank you, joblack. That's it, what I was looking...

Thank you, joblack. That's it, what I was looking for.
Forum: Software 2009-10-31, 09:18
Replies: 9
Views: 1,486
Posted By lidocorc
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...
Forum: Information & Answers 2009-03-23, 22:06
Replies: 2
Views: 421
Posted By lidocorc
Meanwhile the status is "trusted" again. It...

Meanwhile the status is "trusted" again. It changed without me doing anything.
Forum: Hardware 2009-03-22, 13:06
Replies: 8
Views: 730
Posted By lidocorc
Thank you. I'll try that now.

Thank you. I'll try that now.
Forum: Hardware 2009-03-22, 07:56
Replies: 8
Views: 730
Posted By lidocorc
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...
Forum: Information & Answers 2009-03-21, 12:31
Replies: 2
Views: 421
Posted By lidocorc
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...
Forum: Information & Answers 2009-03-07, 14:04
Replies: 6
Views: 2,946
Posted By lidocorc
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...
Forum: Information & Answers 2009-03-07, 07:45
Replies: 6
Views: 2,946
Posted By lidocorc
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?
Forum: PrimeNet 2008-12-23, 08:35
Replies: 4
Views: 494
Posted By lidocorc
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...
Forum: PrimeNet 2008-12-21, 16:01
Replies: 1
Views: 508
Posted By lidocorc
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...
Forum: Software 2008-12-09, 05:27
Replies: 4
Views: 707
Posted By lidocorc
Thank you, starrynte. Now prime95 works again...

Thank you, starrynte. Now prime95 works again correctly.
Forum: Software 2008-12-08, 17:35
Replies: 4
Views: 707
Posted By lidocorc
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...
Forum: Software 2008-12-08, 06:03
Replies: 4
Views: 707
Posted By lidocorc
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
Forum: Software 2008-11-30, 14:46
Replies: 3
Views: 827
Posted By lidocorc
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...
Forum: Software 2008-11-08, 07:33
Replies: 2
Views: 654
Posted By lidocorc
Of course this is meant as bug report. Since...

Of course this is meant as bug report. Since nobody is answering, I guess this is the wrong subforum to place it. But where else?
Forum: Software 2008-11-07, 05:17
Replies: 2
Views: 654
Posted By lidocorc
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...
Forum: PrimeNet 2008-11-06, 14:39
Replies: 4
Views: 488
Posted By lidocorc
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....
Forum: Software 2008-11-05, 23:05
Replies: 11
Views: 702
Posted By lidocorc
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...
Forum: Software 2008-11-02, 07:52
Replies: 18
Views: 831
Posted By lidocorc
@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...
Forum: Software 2008-11-02, 07:41
Replies: 2
Views: 482
Posted By lidocorc
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...
Forum: Software 2008-11-01, 07:05
Replies: 18
Views: 831
Posted By lidocorc
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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