Facebook

Login

Support Sailonline

If you haven't already - join the SAILONLINE YACHT CLUB!

Please also consider making a donation - all amounts are greatly appreciated!

Board » Technical Support » qtVlm thread

Page: First Previous 11 12 13 14 15 16 17 Next Last

Posted by
SCARABOCCHIO


Users avatar

Posts
97
Registered at
2012-02-05 16:24:16
2017-04-05 11:00:01 - Re: qtVlm thread
I finally understand: "best performance" and "best accuracy" refer to calculation accuracy of the route, not to speed performance of the boat ...
Carlo Alberto
Posted by
Zoe


Users avatar

Posts
15
Registered at
2016-07-05 21:43:16
2017-04-05 14:55:34 - Re: qtVlm thread
Sorry, I still don't understand the difference between "performance" and "accuracy".
Thanks for any assistance.
Zoe
Posted by
SCARABOCCHIO


Users avatar

Posts
97
Registered at
2012-02-05 16:24:16
2017-04-05 18:39:25 - Re: qtVlm thread
Hi Zoe,
I realized that with "best performance" the software calculates the route in a faster way, but less precise, with "best accuracy" calculates your route more slowly but the result is more accurate.
Carlo Alberto
Posted by
Zoe


Users avatar

Posts
15
Registered at
2016-07-05 21:43:16
2017-04-05 19:02:39 - Re: qtVlm thread
Hi Scarabocchio,

Yes, I get that, but the difference in calculation time between the two is measured in seconds!. In my computer, using "Best accuracy" usually means extra seconds, (less than 1 minute), or so of "waiting", even on long legs routings.

To me, I don't see the reason in using "Best performance" ever.

Thanks,
Zoe.
Posted by
SCARABOCCHIO


Users avatar

Posts
97
Registered at
2012-02-05 16:24:16
2017-04-05 19:08:38 - Re: qtVlm thread
on my Mac, best performance calculated in seconds and optimizes in a minute, calculates best accuracy in a few minutes and optimizes it for a long time (depends on how many hours do you calculate the forecast).
C.A.
Posted by
SCARABOCCHIO


Users avatar

Posts
97
Registered at
2012-02-05 16:24:16
2017-04-05 19:17:38 - Re: qtVlm thread
(I use "best accuracy" only when I want to sleep well ...)
Posted by
Zoe


Users avatar

Posts
15
Registered at
2016-07-05 21:43:16
2017-04-05 19:18:52 - Re: qtVlm thread
Really?

I must have a fast computer them. I haven't seen any (routing) calculation that takes more than a minute.
I am running on a Dell Inspiron Laptop with Intel i7 at 2.30GHz and 16 GB of RAM. Windows 10. (One year old.)
Posted by
Zoe


Users avatar

Posts
15
Registered at
2016-07-05 21:43:16
2017-04-05 19:30:56 - Re: qtVlm thread
Scarabocchio,

Yes, sleep at night is important.
To me that is the appeal of using Qt, so I can sleep 8 hours at night. I always skip one weather update, usually the one at 2 AM, and that is fine with me. :)

Zoe
Posted by
SCARABOCCHIO


Users avatar

Posts
97
Registered at
2012-02-05 16:24:16
2017-04-05 19:33:39 - Re: qtVlm thread
Mine is a MacBookPro Retina 15" - 2,2 GHz Intel Core i7 - 16 GB RAM.
The computation time I said is related to the "automatic settings", if you change parameters the time is greatly reduced.
C.A.
Posted by
maitai


Users avatar

Posts
114
Registered at
2016-02-25 08:15:33
2017-04-07 06:42:17 - Re: qtVlm thread
Hello,
Best Accuracy uses more resources (memory and CPU) and takes more time. On a decent PC that should not be a problem and that should be your preferred setting.
But remember that qtVlm also runs on Android and iOS, so when running on a small phone it might be needed to reduce accuracy in order to save time (and battery). Some trials are needed in order to find the correct setting depending on your device and needs.

--- Dernière modification par maitai le 2017-04-07 06:42:50 ---

Page: First Previous 11 12 13 14 15 16 17 Next Last

Please login to post a reply.

Races

Next Race: 00d 00h 00m

Current Races:

Rapallo to Nador 2026


Welcome to Liguria’s Rapallo, there where Zarathustra spoke - at length - to Nietzsche, for our first race of nine to celebrate all things Mediterranean - fickle winds, history and olive oil. A number of our races in this new Magical Mediterranean series will be partnership with famous real-life races, but this first race is pure fiction - 780nm in refurbed IMOCA 60s, past or through the Balearic Isles and on into the Alboran Sea, to a finish off Nador on the Maroc Mediterranean coast.
Race #1975
INFOby brainaid.de
IMOCA 60v2 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: MED - SYC
Race starts: Mar 30th 15:00 Registration Open!
▶ Flash
GO TO RACE

Red Eye - Melville Island PYOC 2026

Melville Island is the largest of the Tivi group opposite the port of Darwin in the Timor Sea. Tropically forested and thinly populated, not a lot goes on there, but let’s race around it anyway, lar- or starboard round, it’s a little more than 120nm, so, no matter where you are navigating from on the planet, you will be hard-pressed to complete the course aboard your J-80 in daylight hours!
Race #2003
INFOby brainaid.de
J-80 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: RED - SYC
RACE CLOSE: Tuesday,
March 31 at 2300 UTC.
Race starts: Mar 24th 12:00 Registration Open!
▶ Flash
GO TO RACE

Cross the Convergence 2026 - Guam to Ouvéa


The third race of our series of ocean voyages across the World’s convergence zones takes us southeastward now down the Pacific, from Guam’s Apra Harbour at 13.5 degrees North, back across the Equator to the glorious New Caledonian resort island of Ouvéa, on the edge of the Tropic of Capricorn at 20.5 degrees South. It’s 2400nm, and there’s more than a few other islands in the way, so mind where you go in your Ocean 50s. Race #1981
INFOby brainaid.de
Ocean 50PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: CCZ - SYC
Race starts: Mar 20th 18:00 Registration Closed
▶ Flash
GO TO RACE

Lake Victoria TIMED Race 2026

This month’s TIMED race takes us inland to Lake Victoria in the heart of Africa. Starting at Rosebery Channel in Uganda sail the AC72v2 on a 196nm course around Bugala Island on the way to the finish line in Tanzania’s Speke Gulf. This is a TIMEDrace so you may RE-REGISTER HEREto try again after finishing a run. You will have 13 days and 11 hours to test your skill and decision making after the race opens.
Race #2018
INFOby brainaid.de
AC72v2 Particulars
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking:
TRQ1 - TRCH - SYC
RACE CLOSE: Saturday,
28 March at 23:00 UTC
Race starts: Mar 15th 12:00 Registration Open!
▶ Flash
GO TO RACE

Go to race archive

SYC Ranking

  1. Sailonline Yacht Club Member WRmirekd
  2. Sailonline Yacht Club Member KaSToR
  3. Sailonline Yacht Club Member rafa
  4. Sailonline Yacht Club Member rumskib
  5. Sailonline Yacht Club Member Sax747
  6. Sailonline Yacht Club Member vida
  7. Sailonline Yacht Club Member CriticalHippo
  8. Sailonline Yacht Club Member CollegeFund
  9. Sailonline Yacht Club Member Panpyc
  10. Sailonline Yacht Club Member sassy63

View full list

Series

Mobile Client

SYC members have the benefit of access to our mobile/lightweight web client!

The mobile client