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Old 2022-06-09, 00:18   #45
kriesel
 
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Per this earlier post, attempting to get timing for one t70 curve for M1277 (and veer back onto the original thread topic) I ran the following Windows cmd line script:
Code:
: for ecm digit levels bounds and curve counts tables see  
: https://members.loria.fr/PZimmermann/records/ecm/params.html
set prompt=$d $t $p$g 
set exponent=1277 
echo batch script launching gmp-ecm at %date% %time% >>gmplog.txt  

ecm -maxmem 6144 -v -v -v -save m%exponent% -chkpnt ckp%exponent% 2900000000 >>gmplog.txt >gmplog.txt 

echo gmp-ecm terminated at %date% %time% >>gmplog.txt 
echo.>>gmplog.txt
I found the system had done a BIOS-initiated thermal protection shutdown after stage 1 completed in 12+ hours and some of stage 2 completed (not sure what percentage). So the Windows state was not saved or resumed, the session was lost, there's a chkpnt file but that only saves stage 1. The save file was zero bytes. gmplog.txt included
"Using B1=2900000000, B2=82640965106716, polynomial Dickson(30), sigma=0:1635118019924123710"
and over a dozen variations on
"Computing roots of G took 367257ms, 94347264 muls and 8192 extgcds
Building G from its roots took 229166ms
Computing G * H took 36208ms
Reducing G * H mod F took 51886ms"
for an unknown fraction of completion of stage 2.

So, changing the ecm line to the following and trying stage 2 again, which can be left to run while I work on some too-long-delayed other things unrelated to number theory.
Code:
ecm -maxmem 6144 -v -v -v -save m%exponent%s2 -resume ckp%exponent% 2900000000 >>gmplog.txt
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Old 2022-06-09, 00:23   #46
chalsall
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Quote:
Originally Posted by kriesel View Post
So, changing the ecm line to the following and trying stage 2 again, which can be left to run while I work on some too-long-delayed other things unrelated to number theory.
Why does anyone care?

Why did you waste our bandwidth parcing this?
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Old 2022-06-09, 00:41   #47
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Quote:
Originally Posted by storm5510 View Post
An exclusion: B1 = 8e8-8e8. This is what PhilF used in his M1277 runs.
I don't know where you're getting the term "exclusion" from. It's an instruction to GMP-ECM saying "I've already run stage 1 with B1=8e8, so please run stage 2 with the appropriate B2".

Quote:
Why try it? Because I am not confined to thinking inside the box as you appear to be.
Excuse me?? You're not thinking outside the box, you just don't know anything about how the ECM algorithm works and so you're playing around with GMP-ECM as if it's a toy. Furthermore, you seem unable to comprehend that some of us here know a lot more about ECM than you do: in particular, we know what sensible inputs are, and we know that there isn't some magic super-efficient mode that you can unlock with bizarre command lines.

ECM is an algorithm, not a game. It doesn't have cheat codes.
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Old 2022-06-09, 01:05   #48
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Quote:
Originally Posted by charybdis View Post
ECM is an algorithm, not a game. It doesn't have cheat codes.
A quick question... Is your Vcc == Vdd?

Is your GNDA == GNDD?

And let us please not talk about the capacitance of the ground plane...

It's all quite mad. And jolly good fun...
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Old 2022-06-09, 01:19   #49
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Quote:
Originally Posted by chalsall View Post
Why does anyone care?
Ken. This was a sincere question.

Why did you not answer?
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Old 2022-06-09, 01:44   #50
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Quote:
Originally Posted by chalsall View Post
A quick question... Is your Vcc == Vdd?

Is your GNDA == GNDD?
Not an electrical engineer so I have no clue what you're on about.
Unless this is just chalsall code for "are you an electrical engineer?" in which case you've got your answer.

Quote:
Originally Posted by chalsall View Post
Ken. This was a sincere question.

Why did you not answer?
Never mind the usefulness of Ken's post, isn't 56 minutes a rather short time to give him to answer your question?

Last fiddled with by charybdis on 2022-06-09 at 01:47
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Old 2022-06-09, 01:54   #51
chalsall
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Quote:
Originally Posted by charybdis View Post
Never mind the usefulness of Ken's post, isn't 56 minutes a rather short time to give him to answer your question?
It is.

I already have a circuit diagram.

Ready to defend it.
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Old 2022-06-09, 02:09   #52
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Quote:
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It is. I already have a circuit diagram. Ready to defend it.
Breaking the "fourth wall"... This was profoundly funny.

But only for those who "got it".
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Old 2022-06-09, 02:18   #53
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Quote:
Originally Posted by chalsall View Post
Ken. This was a sincere question.

Why did you not answer?
I sometimes ask honest and sincere questions. And I sometimes don't get answers.

Can anyone please explain that to me?
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Old 2022-06-09, 02:41   #54
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Quote:
Originally Posted by chalsall View Post
Breaking the "fourth wall"... This was profoundly funny.
.
Chris, the last three posts are triggering something that will:
1. help you catch your breath
2. give others time to respond to you without you posting more "are you chicken?" posts once every 10 minutes.

HTH.
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Old 2022-06-09, 09:43   #55
xilman
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Quote:
Originally Posted by kriesel View Post
Per the man page link posted earlier, it appears that of the listed gmp-ecm authors, Jim Fougeron has been most involved with input parsing, and so is likely the best qualified to make such changes. I've sent him an email ~4 hours ago, including links to this thread and a specific post and the download mirror for GIMPS software, and suggesting that for gmp-ecm,

  1. its readme.txt be updated, or a link to an online man page be included in the readme.txt, or a man page copy be included in distributions including Windows distributions of gmp-ecm;
  2. its B1 command line input parsing and error /warning output for exceptional B1 input be reexamined;
  3. the mersenne.ca download mirror be updated occasionally (with direct contact info for James Heinrich provided to Jim F)
I've not received either a bounce message or a response but it's early yet, and he's under no obligation to reply.
Ken: If you believe that gmp-ecm is not fit for purpose, I suggest that you ask for your money back.
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