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Forum: Msieve 2021-05-12, 18:47
Replies: 41
Views: 18,404
Posted By frmky
Set the cache size in the source, optionally...

Set the cache size in the source, optionally remove the loop unrolling, set the optimization flags for the machine in Makefile (really just -Ofast -mcpu=native is usually fine) and compile. In the...
Forum: Msieve 2021-05-10, 04:38
Replies: 41
Views: 18,404
Posted By frmky
nVidia Tesla V100 with now old CUDA code that...

nVidia Tesla V100 with now old CUDA code that only supports 64-bit vectors
1h 26m
Forum: Msieve 2021-05-09, 22:24
Replies: 41
Views: 18,404
Posted By frmky
One node with 2 x Cavium ThunderX2 CN9980 32-core...

One node with 2 x Cavium ThunderX2 CN9980 32-core 64-bit ARM cpus and DDR4 memory.

VBITS = 64 2h 57m
VBITS = 128 2h 1m
VBITS = 256 2h 2m
Forum: Msieve 2021-05-09, 20:16
Replies: 41
Views: 18,404
Posted By frmky
common/lanczos/cpu/lanczos_cpu.h:#define...

common/lanczos/cpu/lanczos_cpu.h:#define MAX_THREADS 32
Forum: Msieve 2021-05-09, 08:57
Replies: 41
Views: 18,404
Posted By frmky
Each node has a Fujitsu A64FX 64-bit ARM...

Each node has a Fujitsu A64FX 64-bit ARM processor with 48 cores and 32 GB HBM memory divided into 4 NUMA regions.

VBITS = 128
1 node 3h 30m
2 nodes 1h 58m
4 nodes 1h 10m
8 nodes 0h 41m
...
Forum: GPU Computing 2021-05-09, 02:56
Replies: 20
Views: 433
Posted By frmky
Are you cooling it? Tesla cards often don't have...

Are you cooling it? Tesla cards often don't have a fan installed and require a high-speed fan to keep it cool.
Forum: Factoring 2021-05-06, 01:28
Replies: 950
Views: 98,739
Posted By frmky
Yes, I think so. Along with computing resources...

Yes, I think so. Along with computing resources to complete both the sieving and linear algebra.
Forum: Factoring 2021-05-05, 18:49
Replies: 950
Views: 98,739
Posted By frmky
Here's the log for posterity. ziQFbDHJ

Here's the log for posterity.

ziQFbDHJ
Forum: NFS@Home 2021-04-30, 18:42
Replies: 37
Views: 5,773
Posted By frmky
Yes, that's an option. The relations are still...

Yes, that's an option. The relations are still available and valid. You will likely have about 1/2 - 2/3 of the jobs below the leading edge done. You can start sieving at 75M or so and extend at the...
Forum: Aliquot Sequences 2021-04-22, 00:00
Replies: 3,460
Views: 326,946
Posted By frmky
Update 2638548

Update 2638548
Forum: Homework Help 2021-04-21, 21:01
Replies: 36
Views: 1,782
Posted By frmky
This time, n^2+1 with n =...

This time, n^2+1 with
n = 45083353343605571545533410947717135106897526776420892595434169982645626140823520
I see this is already factored, but please don't do these for him. It appears that he has...
Forum: Aliquot Sequences 2021-04-20, 18:41
Replies: 3,460
Views: 326,946
Posted By frmky
Update 2801742

Update 2801742
Forum: Homework Help 2021-04-09, 07:50
Replies: 36
Views: 1,782
Posted By frmky
It looks like you are perhaps trying to factor...

It looks like you are perhaps trying to factor this number?
33765749444723236975938383549571694531728722961303548619829414070181324100^2+1
Forum: Hardware 2021-04-09, 00:08
Replies: 5
Views: 311
Posted By frmky
Yes, in my experience most cluster systems are...

Yes, in my experience most cluster systems are built on a Red Hat-based distro. Although it looks like Rocks hasn't been updated in a while, and the community appears to be moving to OpenHPC.
...
Forum: Hardware 2021-04-08, 07:00
Replies: 5
Views: 311
Posted By frmky
I haven't tried this in quite a while, but when I...

I haven't tried this in quite a while, but when I built my own small clusters I used Rocks (http://www.rocksclusters.org/). That configures IB out of the box, as well as MPI supporting IB, a...
Forum: Science & Technology 2021-04-07, 05:37
Replies: 205
Views: 11,205
Posted By frmky
My actual kid is my biggest concern now. All of...

My actual kid is my biggest concern now. All of the adults in my immediate family have had both shots. I know outcomes for children are good but worry about currently unknown longer term effects.
Forum: Aliquot Sequences 2021-04-03, 18:19
Replies: 982
Views: 103,646
Posted By frmky
2747460 at i2916 merges with 1553820 at i7.

2747460 at i2916 merges with 1553820 at i7.
Forum: Aliquot Sequences 2021-03-30, 19:25
Replies: 11
Views: 650
Posted By frmky
Ah. So simple. Thanks!

Ah. So simple. Thanks!
Forum: Aliquot Sequences 2021-03-30, 18:57
Replies: 11
Views: 650
Posted By frmky
Speaking of participating casually, is there a...

Speaking of participating casually, is there a way to flag in the reservations page that a number should be updated on the blue page? I don't want to reserve and unreserve it as I've only run it for...
Forum: Aliquot Sequences 2021-03-29, 06:16
Replies: 3,460
Views: 326,946
Posted By frmky
Drop 133032

Drop 133032
Forum: Aliquot Sequences 2021-03-20, 20:56
Replies: 3,460
Views: 326,946
Posted By frmky
Taking 133032

Taking 133032
Forum: NFS@Home 2021-03-19, 23:21
Replies: 113
Views: 7,213
Posted By frmky
At this point I recommend to just keep going....

At this point I recommend to just keep going. You'll probably need to sieve to about 200M. Not a big problem, really. :smile:
Forum: Science & Technology 2021-03-18, 19:07
Replies: 205
Views: 11,205
Posted By frmky
With the first shot I just had a sore arm and a...

With the first shot I just had a sore arm and a short, mild headache. However, for me completing the vaccination was worth one day of reduced productivity.
Forum: Science & Technology 2021-03-17, 19:43
Replies: 205
Views: 11,205
Posted By frmky
For me the second Pfizer shot definitely hit...

For me the second Pfizer shot definitely hit harder. I got the shot in the early afternoon and symptoms started kicking in that evening. I felt crappy the next day with mostly muscle aches and...
Forum: Software 2021-03-13, 04:46
Replies: 14
Views: 639
Posted By frmky
Yes, more data is needed. For the first set, here...

Yes, more data is needed. For the first set, here are three models that do a reasonable job describing the data.

https://www.desmos.com/calculator/punkfe5upd
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