ConwayLife.com

Is there a way to list all of the lifelike censuses with a particular symmetry, such as C1? If not, can one be provided? I'm looking for a list of rules with the number of objects for each, which can be sorted by either rulestring or number of objects. Alternative: is there a way to show an extended...

Searching some rules in v5.35-ll2.4.18 seems to take much longer and to be much more difficult or impossible compared to what other people appear to have encountered with earlier versions. After giving the message "Failed to detect periodic behaviour!", apgluxe sometimes takes hours either to fail o...

I'm testing the --profile option with recompile.sh on two laptops, one with the SSE4.2 instruction set and the other with AVX512. In both cases I seem to be getting a few percent speed gain, which is enough to justify using --profile for any code I intend to run continuously. I let apgluxe continue...

I'm testing the --profile option with recompile.sh on two laptops, one with the SSE4.2 instruction set and the other with AVX512. In both cases I seem to be getting a few percent speed gain, which is enough to justify using --profile for any code I intend to run continuously. I let apgluxe continue ...

Try passing the -a flag to git commit , like this: git commit -m "Fix makefile" -a Thanks -- this made it possible to run "git pull" to update to the current version. I still don't understand why "my" changes had to be committed and merged since I didn't make any changes to this code tree since the...

Thanks for the suggestion, but this didn't work -- apparently git finds changes not staged for commit, even though I didn't make any changes. Here are the messages: $ git commit -m"Fix makefile" On branch master Your branch is behind 'origin/master' by 2 commits, and can be fast-forwarded. (use "git...

When I try to update apgluxe to v5.33 from earlier v5 versions, I now get this message: $ git pull Updating e65b5b7..d3a5dac error: Your local changes to the following files would be overwritten by merge: makefile Please, commit your changes or stash them before you can merge. Aborting On one machin...

All very interesting! I'm looking for a way to make a set with available tools and materials. Another way to tighten up the boundary would be to indent the boundary pieces on both sides and link them with asymmetric "axe heads" that can be cut separately in a slightly larger size. If the internal lo...

I was introduced to CGoL and cellular automata in general by the article in Scientific American in 1970. Since then I have encountered Conway's name and ideas while reading about various apparently unrelated areas of mathematics -- his professional interests were even more wide-ranging than my amate...

This page probably has what you want -- I only know BOINC from the user end, but this page explains how to package your project so BOINC users can run it with good control over how it runs on their machines.

https://boinc.berkeley.edu/trac/wiki/ProjectMain

A minor point: we do have lots of natural glider guns in Catagolue, just none in C1. We have many interesting symmetric patterns in the higher symmetries that do not occur in C1, partly because the symmetric domains are larger, up to 32x32, and can easily produce larger objects. Based on the variou...

Reviving an old suggestion -- I would like to see apgsearch available through BOINC, which is where many folks go when they want to put their spare computer cycles to good use. I contributed to BOINC after TOLLCASS ended and before I found apgsearch. Conway's Life is at least as much of a "good use"...

I hope you will share your results with us.

Today I've been running v4.92 under cygwin vs. v4.95 in a Windows cmd window on our AVX1 machine, both at low priority. v4.92 10101101 soups/haul v4.95 10101106 soups/haul Using command line options, v4.95 is running 1 to 3% faster, but it doesn't stop on "q". Entering the options interactively resu...

Should I switch to v4? V4 is faster now than it was a year ago, and it now runs b3s23 faster on all of my machines. I recommend making a copy of your install, upgrading the copy to V4, and running one instance of each version side by side. If V4 is still slower on your system, Calcyman will want to...

We have encountered server errors for more than 7 hours. Catagolue pages that do not need server data are displaying OK.

This is a 2-core 4-processor AMD machine running Windows 8.1, and I'm running 3 instances under cygwin using "nice -n 19" to lower the priority. For the current runs, starting around 1735 UTC, I have manually set each instance to run on one processor, and they will continue for several hours unless ...

So it looks like v4.82-ll2.1.5 is at most 2% slower than v4.72-ll2.0.27 -- the 5700003 has only lagged by 10 minutes against the others over a period of 9 hours. You may have included an interval when the machine wasn't running. It looks to me like the 5700003 run is losing between 2.5 and 3 minute...

b3s23/C1 runs more slowly in v4.82-ll2.1.5 than in v4.72-ll2.0.27 under cygwin on our AVX1 machine. You can compare my hauls with these total numbeers of soups:

5700001 v4.72-ll2.0.27
5700002 v4.72-ll2.0.27
5700003 v4.82-ll2.1.5

In a variation of your notation, with capital letters for cells in one copy of the domain and lower-case letters for cells in six surrounding copies of it, a doubly-twisted toroidal domain can look like this: e3 e4 e5 h1 h2 h3 c1 f3 A1 A2 A3 A4 A5 d1 g3 B1 B2 B3 B4 B5 e1 h3 C1 C2 C3 C4 C5 f1 a5 D1 D...

I think that rotating the fundamental parallelogram is not equivalent to rotating the grid to eliminate skew in one direction. Golly's methods for twisting grids on a torus cause a *WSS along one axis to vary its path across the rectangle, but a *WSS along the other axis retraces its path. We are tr...

Sure, an untwisted torus with any ratio between dimensions without a common factor will give the result you describe. Yes, the path will cover the domain, but if the ratio of sides is near a ratio of small numbers, a glider's path will drift across the domain in small steps, and a large target will...

It's also possible, although I don't know how easy it is in Golly, to twist the torus, so that when a glider exits from one side of the field, it doesn't appear directly opposite on the other side. Twisting is not necessary. If the sides of the toroidal domain are two consecutive fibonacci numbers,...

I have updated all of our computers to run apgluxe v4.45-ll1.54 against the previous version for b3s23/C1: Using cygwin under Win8.1 or Win7: 3000001 SSE4.2 v4.45-ll1.54 3000002 SSE4.2 v4.44-ll1.53 4000001 SSE4.2 v4.45-ll1.54 4000002 SSE4.2 v4.44-ll1.53 5000001 AVX1 v4.45-ll1.54 5000002 AVX1 v4.44-l...

I have updated three machines to run apgluxe v4.45-ll1.54 in place of apgmera : AVX1 5000001 SSE4.2 4000001 AVX2 11000001 The corresponding *000002 hauls continue to be run using v4.44-ll1.53. I'll update the other SSE machines later. An oddity: on the AVX2 machine, I had to run ./recompile.sh --upd...