Reserved for MF - Sequence 4788

[Joshua2]

Originally Posted by Andi47

To which bounds? can you please save stage 1 (at the best done with the -chkpnt filename option) and post it

Ok, doing that to 1e10 for now I guess. I guess I'll do a run with pp1 to 1e9.

[Joshua2]

that factors database should let you edit or delete stuff if you make a mistake entering. I didn't actually do the ECM work posted lol.

[frmky]

Originally Posted by fivemack

I'm running 2000@11e7 over the weekend. (raman: 60 hours Fri morning - Mon morning / 15 CPU-minutes per curve * 8 CPUs)

I've run 3000@11e7 so far on 54 cores. No factors yet.

[Joshua2]

file psave p+1 resume file at my gmp's max B1 bounds for archival purposes, running B2
file pp1 completed 1e9 default b2
file pm1 completed 1e10 crashed during b2 someone else can try

running another pp1 at 4e9 and 1000 ecm 11e7

[Andi47]

I will do p-1 stage 2.

[Andi47]

Originally Posted by Andi47

I will do p-1 stage 2.

Done to B2=1e15, no factor.

[Andi47]

Originally Posted by Andi47

Done to B2=1e15, no factor.

Extended this to B2=1e16, no factor.

[Joshua2]

At what point do you extend B2 vs B1? I always just use default B2 and extend B1. anyone care to run B2 on this pp1? we can prob call this last 1 did 1 other with same bounds and one with a quarter.
also the other file psave from the last upload needs B2 run too. For some reason my desktop and laptop both crash doing B2. My laptop prob doesn't have enough memory, but my exe must be bad or something anyway ecm works fine so i'm just doing that.

[Andi47]

Originally Posted by Joshua2

At what point do you extend B2 vs B1? I always just use default B2 and extend B1. anyone care to run B2 on this pp1? we can prob call this last 1 did 1 other with same bounds and one with a quarter.
also the other file psave from the last upload needs B2 run too. For some reason my desktop and laptop both crash doing B2. My laptop prob doesn't have enough memory, but my exe must be bad or something anyway ecm works fine so i'm just doing that.

For running B2 to 1e15 (with your savefile which was at B1=1e10), I did:

./ecm -nn -pm1 -maxmem 1700 -resume pm1 <alq4788.2527.txt 1e10 1e15 >>alq4788.2527.out

where alq4788.2527.txt contains the c171.

Note: the "-maxmem 1700" options makes ecm to chose the parameters in a way that it does not use more than 1700 MB RAM. (without this option, it would be faster, but would require *much* more RAM, which my laptop doesn't have.)

Note that I have set the B1 to 1e10 which is exactly the same as in the savefile: ecm will read the savefile, see that B1 is already at 1e10 and continue with B2 - the output looks like this:

GMP-ECM 6.2.3 [powered by GMP 4.3.1] [P-1]
Resuming P-1 residue 
Input number is 193180597261434437130723427223452983749001196443861486431050101233095959046579376056784397572419692971642911818089261513816572456073452501892312801518858596361529181158803 (171 digits)
Using B1=10000000000-10000000000, B2=1043119049080936, polynomial x^1
Step 1 took 0ms
Step 2 took 2085694ms

For extending B2 for example from 1e15 to 1e16 one can do:

./ecm -nn -pm1 -maxmem 1700 -resume pm1 <alq4788.2527.txt 1e10 1e15-1e16 >>alq4788.2527.out

[jrk]

Is it too early to start organizing a GPU poly search for the c171?

I will reserve -np 120060,144000

[Andi47]

Originally Posted by jrk

Is it too early to start organizing a GPU poly search for the c171?

I will reserve -np 120060,144000

How much ECM has been done so far?