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Forum: Miscellaneous Math 2021-12-08, 02:18
Replies: 52
Views: 2,602
Posted By axn
https://en.cppreference.com/w/c/language/operator_...

https://en.cppreference.com/w/c/language/operator_precedence

&& has higher priority than ||
Same prioirity is evaluated left-to-right. So that's exactly backwards ?!
Forum: Software 2021-12-07, 14:41
Replies: 161
Sticky: Prime95 30.7
Views: 14,096
Posted By axn
Yes, 300MB is the default. The default should be...

Yes, 300MB is the default. The default should be higher. However, most likely moot point.
Forum: Software 2021-12-07, 08:13
Replies: 130
Views: 3,203
Posted By axn
Not exactly. The goal is to use B1 & B2 such that...

Not exactly. The goal is to use B1 & B2 such that : delta B1 / delta p = delta B2 / delta p, where delta B1 (resp. delta B2) is the cost of increasing B1 (resp. B2) by a small amount, and delta p is...
Forum: Software 2021-12-06, 16:59
Replies: 130
Views: 3,203
Posted By axn
I think you may have messed up the worktodo line....

I think you may have messed up the worktodo line. To wit:



What was the worktodo line you used?

Yes, it is normal for it to use larger than the specified B2.
Forum: Software 2021-12-06, 14:17
Replies: 130
Views: 3,203
Posted By axn
Nice! A condensed summary of the run: Optimal...

Nice! A condensed summary of the run:
Optimal P-1 factoring of M108028051 using up to 231424MB of memory.
Assuming no factors below 2^76 and 1.1 primality tests saved if a factor is found.
Optimal...
Forum: Data 2021-12-06, 12:00
Replies: 985
Views: 126,654
Posted By axn
:tu:

:tu:
Forum: Software 2021-12-06, 02:02
Replies: 130
Views: 3,203
Posted By axn
Thanks for the benchmark, Mike!

Thanks for the benchmark, Mike!
Forum: Software 2021-12-05, 16:43
Replies: 130
Views: 3,203
Posted By axn
Presumably you're using AVX to mean AVX-512. I...

Presumably you're using AVX to mean AVX-512. I wonder how much of the stage 2 improvement is due to AVX-512 specifically, and how much due to the improvements to stage 2 itself. For instance, for my...
Forum: Software 2021-12-05, 12:47
Replies: 130
Views: 3,203
Posted By axn
Yes. If you keep the same B1 and a larger B2, it...

Yes. If you keep the same B1 and a larger B2, it will run the prevB2-newB2 range.
Forum: Software 2021-12-05, 07:04
Replies: 130
Views: 3,203
Posted By axn
Wow! 330s -> 212s

Wow! 330s -> 212s
Forum: Software 2021-12-05, 04:49
Replies: 130
Views: 3,203
Posted By axn
Phew! Was this only linux build affected? ...

Phew! Was this only linux build affected?

Anyway, whenever you release build 3(?) (with this and other bug fixes), i'll switch over from build 1 which so far seems to be working fine for my use...
Forum: Data 2021-12-04, 05:22
Replies: 985
Views: 126,654
Posted By axn
Alright. In that case, I would like to work on...

Alright. In that case, I would like to work on 27.0. I think a prob of 5.6% should do the trick which means something like 600K / 400M should be sufficient. I might tweak the bounds once I start some...
Forum: Data 2021-12-04, 02:28
Replies: 985
Views: 126,654
Posted By axn
I am coming up to the end of 5.9x fast (although...

I am coming up to the end of 5.9x fast (although it wouldn't look like it from stats). I need another range to start work on -- preferably a hard one. Is there a recommended / most wanted range?
Forum: Software 2021-12-04, 02:24
Replies: 130
Views: 3,203
Posted By axn
Sure. I, in fact, use that setting in /both/...

Sure. I, in fact, use that setting in /both/ folders, and report them manually.


Gotcha.
Forum: Software 2021-12-03, 18:09
Replies: 130
Views: 3,203
Posted By axn
Something's not quite right here. The 24GB option...

Something's not quite right here. The 24GB option shows about 20% less transforms, yet sees no significant improvement in elapsed time. I wonder if there was some interference or something during...
Forum: Software 2021-12-03, 13:56
Replies: 130
Views: 3,203
Posted By axn
How do the parameter selection (D / poly / memory...

How do the parameter selection (D / poly / memory usage / actual B2) look like for these options?
Forum: Software 2021-12-03, 13:55
Replies: 130
Views: 3,203
Posted By axn
Easily done. Run stage 1 only (B1=B2) in one...

Easily done. Run stage 1 only (B1=B2) in one folder, and stage 2 in another folder after copying over the save files.
Forum: Software 2021-12-03, 06:18
Replies: 130
Views: 3,203
Posted By axn
https://www.mediafire.com/file/cm4dsfttw1rlv7d/axn...

https://www.mediafire.com/file/cm4dsfttw1rlv7d/axn_mprime_files.zip/file

Contains two save files. The save files were created by 30.7 with 8M/400M bounds. I am extending B2 to 2G with 30.8
Forum: Software 2021-12-03, 05:10
Replies: 130
Views: 3,203
Posted By axn
This is repeatable. Multiple restarts with build...

This is repeatable. Multiple restarts with build 2 all yielded same behavior - top shows consistently at 200% instead of the expected high 500%
Forum: Software 2021-12-03, 05:07
Replies: 130
Views: 3,203
Posted By axn
From undoc.txt The program supports many...

From undoc.txt
The program supports many different code paths for PRP/LL testing depending on
the CPU type. It also has a few different factoring code paths. You can
force the program to choose...
Forum: Data 2021-12-02, 16:51
Replies: 985
Views: 126,654
Posted By axn
:tu: Yes, with only 16GB available...

:tu:



Yes, with only 16GB available RAM, I understand that you can't give more. Unfortunately, you could've saved several days of computation if you had more RAM.
Forum: Data 2021-12-02, 13:02
Replies: 985
Views: 126,654
Posted By axn
You should have given it a _lot_ more RAM.

You should have given it a _lot_ more RAM.
Forum: Data 2021-12-02, 06:05
Replies: 985
Views: 126,654
Posted By axn
Do you have machines with more RAM? Like 32 GB...

Do you have machines with more RAM? Like 32 GB or more? You'll be surprised (or not) at how much more speedup could be gained by using more RAM. For 2x.x, I would think something like 100+ GB will...
Forum: Software 2021-12-01, 07:26
Replies: 130
Views: 3,203
Posted By axn
Build 2 is bad with multithreading: P-1 on...

Build 2 is bad with multithreading:
P-1 on M5401951 with B1=8000000, B2=8000000000
Setting affinity to run helper thread 1 on CPU core #2
Setting affinity to run helper thread 3 on CPU core #4...
Forum: Data 2021-12-01, 05:36
Replies: 985
Views: 126,654
Posted By axn
Unlike previous versions which run into...

Unlike previous versions which run into diminishing returns the more RAM you throw at it, 30.8 efficiency keeps on going up as you increase your RAM allocation. So any recommendation that doesn't...
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