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Search: Posts Made By: henryzz
Forum: Hardware 2020-05-22, 13:38
Replies: 21
Views: 667
Posted By henryzz
Silly me. I assumed Q6600 not E6600. I seem to...

Silly me. I assumed Q6600 not E6600. I seem to remember 1066mhz ddr2 being enough for 2 cores(and nearly 3).
Forum: Hardware 2020-05-22, 09:37
Replies: 21
Views: 667
Posted By henryzz
Probably due to memory bandwidth being the issue....

Probably due to memory bandwidth being the issue. Bet you don't get any meaningful improvement between 3 and 4 cores either.
Forum: Software 2020-05-21, 14:43
Replies: 271
Views: 25,594
Posted By henryzz
Is the CPU clock lowering when locked?

Is the CPU clock lowering when locked?
Forum: Software 2020-05-15, 10:04
Replies: 38
Views: 962
Posted By henryzz
One of the biggest reasons to keep up to date is...

One of the biggest reasons to keep up to date is that security holes often get published when they are fixed. This leaves unpatched people as targets(generally there are enough to be worth...
Forum: Lounge 2020-05-13, 09:50
Replies: 39
Views: 895
Posted By henryzz
In terms of MS spying: What do you have to hide?...

In terms of MS spying: What do you have to hide? There is some anonymity based on the huge number of people they are collecting data on.
Forum: CADO-NFS 2020-04-30, 07:14
Replies: 479
Sticky: CADO NFS
Views: 40,298
Posted By henryzz
You might want to report this error to the devs....

You might want to report this error to the devs. It looks like the sort of thing that could be broken python 2/3 compatibility. I believe CADO uses python 2 but they aim for it to work in 3 as well....
Forum: Software 2020-04-24, 10:35
Replies: 21
Views: 543
Posted By henryzz
To solve this sort of issue there probably just...

To solve this sort of issue there probably just needs to be a switch that turns off the legendre tables like in sr2sieve. People should be able to decide for themselves. Making it choose itself would...
Forum: Software 2020-04-23, 14:12
Replies: 271
Views: 25,594
Posted By henryzz
And enjoy reading it :smile:

And enjoy reading it :smile:
Forum: Math 2020-04-15, 11:39
Replies: 21
Views: 819
Posted By henryzz
Sum 1: 999999999 has 9 digits so...

Sum 1:
999999999 has 9 digits so 999999999^999999999 has at most 9*999999999 digits.
The maximum possible sum of these digits is 9*9*999999999 = 80999999919.

Sum 2:
It is fairly clear that...
Forum: Math 2020-04-12, 19:47
Replies: 21
Views: 819
Posted By henryzz
IMO problem

Today I came across the solution to a problem from the International Mathematical Olympiad 1975 which I quite liked. I thought I would share the problem and see if anyone here can come up with the...
Forum: GPU Computing 2020-04-01, 08:44
Replies: 2,234
Views: 116,321
Posted By henryzz
long long is typically how you get the 8 byte...

long long is typically how you get the 8 byte version on windows.
Forum: Forum Feedback 2020-03-30, 23:37
Replies: 2
Views: 804
Posted By henryzz
Are you aware of: ...

Are you aware of:
https://mersenneforum.org/subscription.php?do=viewsubscription
Forum: Lounge 2020-03-13, 18:04
Replies: 21
Views: 1,464
Posted By henryzz
My current department is in full prep mode in...

My current department is in full prep mode in case we have to start working from home. It sounds like there is a strong possibility that that may happen for research staff.
Forum: Lounge 2020-03-13, 16:19
Replies: 21
Views: 1,464
Posted By henryzz
Not sure what is going to happen for me...

Not sure what is going to happen for me currently. I am due to start a PhD on April 1st. Will have to see if Liverpool Uni decides to close for a bit. Might end up starting by remote working which...
Forum: Hardware 2020-03-10, 15:42
Replies: 41
Views: 3,178
Posted By henryzz
It sounds like some MLucas benchmarks might be...

It sounds like some MLucas benchmarks might be interesting on those cores.
Forum: CADO-NFS 2020-02-26, 16:17
Replies: 479
Sticky: CADO NFS
Views: 40,298
Posted By henryzz
What is the sublat option on las? As far as I can...

What is the sublat option on las? As far as I can tell it sieves a subset of the sieve region and should reduce memory usage(presumably with a speed penalty). On the version, I am using it just...
Forum: Lounge 2020-02-26, 11:04
Replies: 4
Views: 510
Posted By henryzz
Strings and Loops within Pi - Numberphile

W20aT14t8Pw

Thought this video might interest some on the forum. The sequences thing at the end reminded me of Aliquot sequences.

Is it possible to construct an irrational number with a high...
Forum: Factoring 2020-02-24, 09:56
Replies: 42
Views: 3,208
Posted By henryzz
I think a lot of people on this forum would see...

I think a lot of people on this forum would see some of that in themselves even if they haven't been diagnosed myself included. Often Maths skills come along with that sort of disorder(or it...
Forum: Cunningham Tables 2020-02-19, 23:29
Replies: 127
Views: 11,524
Posted By henryzz
The lower you go the faster it gets in general....

The lower you go the faster it gets in general. Of course, this has to be balanced with increased duplication. The non-standard options of adjust-strategy might help keep the duplication rate...
Forum: Conjectures 'R Us 2020-02-06, 09:31
Replies: 39
Views: 2,318
Posted By henryzz
Here they are.

Here they are.
Forum: Tales From the Crypt(o) 2020-02-04, 10:33
Replies: 221
Views: 21,908
Posted By henryzz
That sort of request often sounds worse than it...

That sort of request often sounds worse than it is. Often to request permission to do one thing they have to ask permission to do loads more than they need. Of course, you never know if they take...
Forum: LaurV 2020-01-24, 10:05
Replies: 3
Views: 432
Posted By henryzz
Looks like a US thing to me. Not sure I have seen...

Looks like a US thing to me. Not sure I have seen it in the UK.
Forum: Hardware 2020-01-23, 12:10
Replies: 158
Views: 10,134
Posted By henryzz
I believe it is theoretically linearly and...

I believe it is theoretically linearly and practically not quite. I believe I have seen figures like 1.9x
Forum: Linux 2020-01-23, 09:49
Replies: 9
Views: 1,535
Posted By henryzz
--help works for most commands. My solution...

--help works for most commands.

My solution for print_number_sequence wasn't accepted although it looked correct and identical to one of the accepted solutions. Not sure what was going on there. ...
Forum: Factoring 2020-01-20, 16:43
Replies: 3
Views: 690
Posted By henryzz
I think to avoid duplicates my implementation...

I think to avoid duplicates my implementation picks two lots of (s-1)/2 (with adjustment for even s) and checks that the product of each set hasn't been seen before. As Ben says, this sort of...
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