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Search: Posts Made By: Mark Rose
Forum: mersenne.ca 2016-07-29, 19:53
Replies: 168
Views: 24,854
Posted By Mark Rose
73 was an example number, that's all :)

73 was an example number, that's all :)
Forum: mersenne.ca 2016-07-29, 17:41
Replies: 168
Views: 24,854
Posted By Mark Rose
It depends on the range. In the very low...

It depends on the range. In the very low exponents, in the <15M neighbourhood, I found thousands of exponents where the bit level was skipped, and I was getting the expected number of factors doing...
Forum: mersenne.ca 2016-07-29, 16:22
Replies: 168
Views: 24,854
Posted By Mark Rose
From the hundreds of thousands of exponents I...

From the hundreds of thousands of exponents I looked at, I came to some conclusions:

If it says "no factor to 2^63" in the history, it's almost always correct.

If it says "no factor to 2^63"...
Forum: mersenne.ca 2016-07-23, 14:56
Replies: 168
Views: 24,854
Posted By Mark Rose
I have found many exponents in the past with a...

I have found many exponents in the past with a higher "no factor to" level than the history would indicate. I fixed all of them below 100M, if I recall correctly.
Forum: mersenne.ca 2016-04-21, 20:25
Replies: 168
Views: 24,854
Posted By Mark Rose
With MyISAM you shouldn't even need a primary key...

With MyISAM you shouldn't even need a primary key for the import, so include that in the unique-index list.

(InnoDB will create an internal one if you don't provide one.)
Forum: mersenne.ca 2016-04-21, 19:25
Replies: 168
Views: 24,854
Posted By Mark Rose
MyISAM? It's been almost a decade since I used...

MyISAM? It's been almost a decade since I used that :)

InnoDB is better in nearly every way since MySQL 5.5, and is the default table engine. It does require a minute or two of server...
Forum: mersenne.ca 2016-04-21, 18:36
Replies: 168
Views: 24,854
Posted By Mark Rose
Use pt-online-schema-change (and run it in screen...

Use pt-online-schema-change (and run it in screen or tmux) for table alters. It's part of the Percona toolkit. You get the added bonus of no downtime. In fact, I'm using it to alter some indexes as I...
Forum: mersenne.ca 2016-04-12, 17:17
Replies: 168
Views: 24,854
Posted By Mark Rose
I'm almost to the point of setting all my clocks...

I'm almost to the point of setting all my clocks at home to UTC.
Forum: mersenne.ca 2016-03-11, 18:35
Replies: 168
Views: 24,854
Posted By Mark Rose
Metric IS standard. The system used in the US can...

Metric IS standard. The system used in the US can basically be called American at this point. ;)
Forum: mersenne.ca 2016-03-11, 16:49
Replies: 168
Views: 24,854
Posted By Mark Rose
ghFntxvlqvM Skip to 10:00. Explains...

ghFntxvlqvM

Skip to 10:00. Explains everything.
Forum: mersenne.ca 2016-02-26, 17:56
Replies: 168
Views: 24,854
Posted By Mark Rose
How was I to know 394,767 result lines would...

How was I to know 394,767 result lines would cause such trouble! Doesn't AirSquirrels do that like every day? ;)
Forum: mersenne.ca 2016-02-26, 17:12
Replies: 168
Views: 24,854
Posted By Mark Rose
That would be the skipped-TF results of mine that...

That would be the skipped-TF results of mine that Madpoo imported :)
Showing results 1 to 12 of 12

 
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