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2017-11-30, 15:48   #122
GP2

Sep 2003

22·3·5·43 Posts

Quote:
 Originally Posted by bayanne Any other suggestions would be most welcome
Look at the file prime.txt

It should have a line of the form

WorkPreference=

with a numerical value.

Is the numerical value 150 or 151? Or perhaps even 0?

If it's anything other than 2, then stop the program, and change that value to 2, then restart the program.

Last fiddled with by GP2 on 2017-11-30 at 15:49

2017-11-30, 16:26   #123
bayanne

"Tony Gott"
Aug 2002
Yell, Shetland, UK

31110 Posts

Quote:
 Originally Posted by GP2 Look at the file prime.txt It should have a line of the form WorkPreference= with a numerical value. Is the numerical value 150 or 151? Or perhaps even 0? If it's anything other than 2, then stop the program, and change that value to 2, then restart the program.
No, it is already set at 2 ...

 2017-11-30, 21:33 #124 Prime95 P90 years forever!     Aug 2002 Yeehaw, FL 717110 Posts Check all the CPUs at mersenne.org website. Perhaps your computer spontaneously renamed itself (it has been known to happen). Sorry, I'm on a cruise ship right now and cannot peer into any of the server databases.
2017-11-30, 22:22   #125
preda

"Mihai Preda"
Apr 2015

1,223 Posts

Quote:
 Originally Posted by bayanne It has just grabbed yet another PRP. This is beginning to get tiresome ...
Probably what the server is really trying to say is, that you really shouldn't do TF on the CPU, and that PRP is a better choice :)

(that was a joke; but speaking seriously probably a CPU is better used to do any of LL, LL-DC, PRP. Anyway, that does not invalidate your choice).

2017-11-30, 22:33   #126

"Kieren"
Jul 2011
In My Own Galaxy!

5×2,003 Posts

Quote:
 Originally Posted by bayanne Not really with you there, sorry ... Whereabouts on my system is it finding that I want PRP?
I know this sounds flaky. However, in the past there were situations in which P95/PrimeNet were balky about work type changes. This procedure worked back then. Now, the same factors (no pun intended) may not be in play, what with the new functions being addressed.

2017-11-30, 22:40   #127
Dubslow

"Bunslow the Bold"
Jun 2011
40<A<43 -89<O<-88

3×29×83 Posts

Quote:
 Originally Posted by kladner On the client, try changing the work type to anything but your target. Make it communicate with the server, and send new completion dates. Check online to see if the change carried over. Assuming that it did, reset to your desired type on the client. Manually communicate again, with completion dates checked. See if the server matched the type change. In the past, this sequence would usually get things in sync. If the server is not responding to the changes, I am not sure what to do next. Once the server and client are in agreement you can unreserve unwanted assignments.

Quote:
 Originally Posted by bayanne Not really with you there, sorry ... Whereabouts on my system is it finding that I want PRP?
kladner's advice is quite good. Generally, in our collective experience, if Prime95 refuses to get the right type of work, it's because the server's saved workpreference differs from the client's saved workpreference. kladner's list of instructions is a way to "flush" the settings so that the client and server are synchronized. It's the best advice I've seen so far in this thread, so I definitely recommend trying to understand his post one more time.

2017-12-01, 00:18   #128
ATH
Einyen

Dec 2003
Denmark

56008 Posts

Quote:
 Originally Posted by Prime95 Sorry, I'm on a cruise ship right now and cannot peer into any of the server databases.
Ahh so you are on vacation?!?!? That is usually the time we find a new Mersenne Prime!! *crosses fingers*

(We really need a *crosses fingers* or *hoping* smiley)

2017-12-01, 06:17   #129
bayanne

"Tony Gott"
Aug 2002
Yell, Shetland, UK

4678 Posts

Quote:
 Originally Posted by Prime95 Check all the CPUs at mersenne.org website. Perhaps your computer spontaneously renamed itself (it has been known to happen). Sorry, I'm on a cruise ship right now and cannot peer into any of the server databases.
That was it, the cpu in question had not changed itself on the server to TF and was still showing PRP

Now all I need is someone who is able to compile mfaktc on a Mac ...

Last fiddled with by bayanne on 2017-12-01 at 06:33

 2017-12-01, 12:34 #130 kladner     "Kieren" Jul 2011 In My Own Galaxy! 5·2,003 Posts Glad you found the glitch!
 2017-12-04, 22:14 #131 GP2     Sep 2003 1010000101002 Posts Prime95 29.4 build 5 is refusing to do PRP-CF on a few exponents: In my results.txt files: 4456310665879544089 does not divide M2207441 12415622589540644657 does not divide M2233183 1219861756779140901119 does not divide M2233019 All of these statements are false, actually. It should be very straightforward to do modular exponentiation with a GMP library function. The condition 2p (mod f) == 1 is obviously true if f is a factor of 2p − 1 Some previous versions were able to do these exponents. Just now, it seems that YarBer completed PRP-CF for M2233183, I'm not sure with what version, but the result shows as "Verified (Factored)" rather than Verified, which basically means it's not considered a match with the currently known factors. Last fiddled with by GP2 on 2017-12-04 at 22:19
2017-12-04, 23:10   #132
R. Gerbicz

"Robert Gerbicz"
Oct 2005
Hungary

25728 Posts

Quote:
 Originally Posted by GP2 Prime95 29.4 build 5 is refusing to do PRP-CF on a few exponents: In my results.txt files: 4456310665879544089 does not divide M2207441 12415622589540644657 does not divide M2233183 1219861756779140901119 does not divide M2233019 All of these statements are false, actually. .
On each exponent there are problems, see for example:
Code:
M2207441/211914337/325862722477981217/4456310665879544089/4456310665879544089 is not prime. Res64: 6550ADD498325C__
for q=4456310665879544089 it is true that q divides M2207441, but here q^2 doesn't divide, so the posted number M2207441/factors is not even an integer. [This also means that if you see it in this way the posted message could be even true, because the second(!) q factor doesn't divide M2207441].

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