Saturday, May 14, 2022

Thirty


I turned on the air conditioning yesterday. In spite of that, my room registers at 30ยบ — significantly above the ambient air temperature outside — because there are sixteen computers herein generating heat, 24/7, and there is insufficient air flow from the vents to make much of a difference. The living room is a little better (the ceiling fan helps) but even Bodie has taken to lying on the floor instead of his chair or the bed/couch. I expect that it will be like this most of the summer!

Thursday, May 12, 2022

Goslings


My daughter dropped by today with some rescued goslings, wondering if I'd seen at the river any families that might be adoption candidates. Of course I hardly ever see the river these days since my Bodie walks are pre-dawn. I pointed out that historically there had always been such families above the weir in Raymore Park and she proceeded thereto and did in fact find such a family.

Tuesday, May 10, 2022

Bucket list

1. Wiener schnitzel (The Coffee Mill closed in 2014; Amber closed in 2021.)

2. China Town (Their online ordering system stopped working a few years ago.)

3. KFC (It's a bucket list! Like Domino's Pizza, I've been unable to generate a delivery.)

4. Tim Hortons (I know. How can something so ubiquitous be so difficult to reach.)

5. Harvey's (Overly motivated by a languishing old Ultimate Dining card.)

269 Rexdale Blvd., this morning (after seeing my endodontist)
Original combo, unoriginal price: $10.84

Friday, May 06, 2022

Ovenbird


There's a pair of robins that have been making daily forages around our backyard since at least mid-April, so it made for a pleasant change to see yesterday this ovenbird checking out a small corner-section of the venue.

Thursday, May 05, 2022

The new high-rise


Prominent now on my morning walks home from Denison Park is "The Humber", an under-construction condominium at 10 Wilby Crescent — which any reasonably observant map enthusiast will decry as being more properly situated on Hickory Tree Road. The sad reality is that the latter has never properly connected Bellevue Crescent to Wilby, being instead a gated roadway to a couple of other high-rises with access only from the Bellevue side. The yellow structure in the below map outlines the building that used to be #10 (also street-view visible by rotating Google's 2015 no-access part of the road; also the location of my 2020 "breakout" blog):


Even though it still a handful of storeys short of its final height, the new condominium can already be seen from my home:

Monday, May 02, 2022

A million-digit Leyland prime (search start)

Last month I laid out a prognosis for setting up a million-digit Leyland prime search. That endeavour has now started its run!

I sieved my L(999999,10) - L(1000099,10) candidates to 2*10^11 resulting in a 59536-term file. Running the sieve from 10^11 to 2*10^11 was not really necessary. The 12.5 days that it took (on a 10-core machine) netted 1632 composites but a direct primality test would have netted ~50 composites per core in the same amount of time and, at 100 cores, would have resulted in three times the yield. At any rate, the effort was not wasted since nine of my Mac minis are still working on their previous project and are therefore not yet search-ready.

I have now initialized 54 cores on nine different computers to begin the search. In a week I will have added the 54 cores on those nine Mac minis finishing their assignments. So 108 cores on eighteen computers dedicated to the task! I am hoping for completion some time in September. Of course, prime finds (should I be so lucky) could happen at any time.