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Forum: And now for something completely different 2021-05-09, 02:26
Replies: 34
Views: 1,581
Posted By paulunderwood
But, Serge, you have not told what it is! Why the...

But, Serge, you have not told what it is! Why the suspense?

OMG, over 8 million digits!

Bigger than M42, and if it was proven 11th largest prime.
Forum: Hardware 2021-05-07, 10:57
Replies: 172
Views: 22,427
Posted By paulunderwood
Scary number of pads on the "chip" -- would have...

Scary number of pads on the "chip" -- would have to be carefully accurate putting into the socket.
Forum: Miscellaneous Math 2021-05-07, 10:24
Replies: 0
Views: 74
Posted By paulunderwood
Cool Divertimento

Based on the Frobenius tests over:

x^2-a*x+a==0 with kronecker(a^2-4*a,n)==-1
x^2-a*x-a==0 with kronecker(a^2+4*a,n)==-1

which can be transformed into

a^((n-2)/2)==kronecker(a,n) (mod n)...
Forum: Hardware 2021-05-06, 18:09
Replies: 15
Views: 405
Posted By paulunderwood
And sell the system, and wait and buy 2nm tech...

And sell the system, and wait and buy 2nm tech (https://www.bbc.co.uk/news/technology-57009930).
Forum: Hardware 2021-05-06, 01:44
Replies: 15
Views: 405
Posted By paulunderwood
Remove 2 sticks of RAM (DIMMS) if the CPU runs...

Remove 2 sticks of RAM (DIMMS) if the CPU runs with dual channel -- make sure it is running in channel afterwards.

Underclock the CPU and reduce the CPU voltage -- this might require some...
Forum: Lounge 2021-05-05, 03:15
Replies: 40
Views: 2,679
Posted By paulunderwood
Tchaikovsky's 6th symphony, 2nd movement: ...

Tchaikovsky's 6th symphony, 2nd movement:

dLlo3i7qZME
Forum: And now for something completely different 2021-05-05, 02:09
Replies: 54
Views: 18,085
Posted By paulunderwood
Bill Allombert replied to my enquiry to him about...

Bill Allombert replied to my enquiry to him about the certiifcation of U(130021):
Forum: Lounge 2021-05-04, 20:50
Replies: 40
Views: 2,679
Posted By paulunderwood
Mars, "the bringer of war", The Planets, Gustav...

Mars, "the bringer of war", The Planets, Gustav Holst is in 5/4 time

Jmk5frp6-3Q
Forum: And now for something completely different 2021-05-04, 19:41
Replies: 54
Views: 18,085
Posted By paulunderwood
It will interesting to hear of what hardware they...

It will interesting to hear of what hardware they are using -- maybe a cluster?
Forum: Information & Answers 2021-05-04, 18:44
Replies: 15
Views: 358
Posted By paulunderwood
https://www.mersenne.org/report_exponent/?exp_lo=1...

https://www.mersenne.org/report_exponent/?exp_lo=110826539&full=1 now shows "verified" :smile:

I can only reiterate that you run ls -laR | grep root in your mprime directory.
Forum: Information & Answers 2021-05-04, 15:36
Replies: 15
Views: 358
Posted By paulunderwood
gpuOwl comes with a file called upload.py...

gpuOwl comes with a file called upload.py (https://github.com/preda/gpuowl/blob/master/tools/upload.py) which I use like this

./upload.py PaulUnderwood <blah>.proof

mprime should do the upload...
Forum: Information & Answers 2021-05-04, 15:06
Replies: 15
Views: 358
Posted By paulunderwood
Please see my previous post. I defer to another...

Please see my previous post. I defer to another to tell how to do a manual upload of the proof file. Firstly you will have to copy and paste the json information for the exponent from the results.txt...
Forum: Information & Answers 2021-05-04, 14:48
Replies: 15
Views: 358
Posted By paulunderwood
Sure. My advice is stop mprime and exit. Remove...

Sure. My advice is stop mprime and exit. Remove the line form worktodo.txt. Start mprime. Wait for a communication between the server and the local spool file OR do a manual upload of the proof this...
Forum: Information & Answers 2021-05-04, 13:44
Replies: 15
Views: 358
Posted By paulunderwood
I think the worktodo.txt file if for work to do...

I think the worktodo.txt file if for work to do and not upload. You have to await comms with the server for the spool (https://en.wikipedia.org/wiki/Spooling) to be processed.

(Yes, you can go to...
Forum: Information & Answers 2021-05-04, 13:19
Replies: 15
Views: 358
Posted By paulunderwood
Do ls -laR * in your mprime directory. If you see...

Do ls -laR * in your mprime directory. If you see ownership to root run sudo chown -R dave:dave * in your mprime directory, assuming "dave" is your username.
Forum: Software 2021-05-03, 16:49
Replies: 2
Views: 115
Posted By paulunderwood
That looks okay; I don't think command line...

That looks okay; I don't think command line options are needed. Thanks.
Forum: Software 2021-05-03, 16:25
Replies: 2
Views: 115
Posted By paulunderwood
Running benchmark with mprime

https://dudo.gvpt.sk/vilik/GIMPS/settings.png

how do I do the above with mprime?
Forum: YAFU 2021-05-02, 23:50
Replies: 100
Views: 2,874
Posted By paulunderwood
Please attach your yafu Makefile. Also what is...

Please attach your yafu Makefile. Also what is the output of ls -l ../msieve ?
Forum: YAFU 2021-05-01, 15:22
Replies: 100
Views: 2,874
Posted By paulunderwood
Note it should be "make yafu...." not just...

Note it should be "make yafu...." not just "make...".
Forum: Science & Technology 2021-05-01, 15:14
Replies: 205
Views: 10,957
Posted By paulunderwood
I had my second Pfiser jab yesterday. I am not...

I had my second Pfiser jab yesterday. I am not feeling 100% well today.
Forum: YAFU 2021-05-01, 06:04
Replies: 100
Views: 2,874
Posted By paulunderwood
Where is libmsieve.a relative to the yafu make...

Where is libmsieve.a relative to the yafu make directory?

try:

make yafu NFS=1 USE_SSE41=1 USE_AVX=1 -l../msieve/libmsieve.a
Forum: YAFU 2021-05-01, 05:13
Replies: 100
Views: 2,874
Posted By paulunderwood
When you see "undefined reference" you are not...

When you see "undefined reference" you are not linking properly.

Without trying it myself, you should do something like:

make NFS=1 USE_SSE41=1 USE_AVX=1 -llibmsieve

or

make NFS=1...
Forum: Hardware 2021-04-30, 00:36
Replies: 3
Views: 181
Posted By paulunderwood
:rofl:

:rofl:
Forum: GPU Computing 2021-04-30, 00:04
Replies: 21
Views: 477
Posted By paulunderwood
Until Debian 11 is out, I recommend Fedora or...

Until Debian 11 is out, I recommend Fedora or Ubuntu for running gpuOwl, maybe Mint too.
Forum: Hardware 2021-04-29, 09:53
Replies: 77
Views: 8,919
Posted By paulunderwood
FPGAs usually have several, sometimes scores, of...

FPGAs usually have several, sometimes scores, of (say) 48x48 bit multipliers which can all be harnessed. I am not sure about the existence of floating point units.

Another thing to take into...
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