Help with speeding up calculations - Smath runs slow when calculating - Сообщения
#1 Опубликовано: 16.04.2013 11:32:11
Hey all,
I've written a smath sheet for representing ellipses as a series of n vectors.
however, when i run the sheet it takes around 6-7 seconds to calculate on this computer.
I was wondering if someone could take a look at the code and see if there's something i'm missing that could speed up the calculations. I've attempted changing the code various ways to speed it up, but to no avail.
Much appreciated,
-Pete
approxEllipse_1.sm
I've written a smath sheet for representing ellipses as a series of n vectors.
however, when i run the sheet it takes around 6-7 seconds to calculate on this computer.
I was wondering if someone could take a look at the code and see if there's something i'm missing that could speed up the calculations. I've attempted changing the code various ways to speed it up, but to no avail.
Much appreciated,
-Pete
approxEllipse_1.sm
#2 Опубликовано: 16.04.2013 12:41:22
Apply an eval() function to theta, rad1 and rad2 (this speed up the worksheet from 15 s to 3 s on my notebook)
regards,
w3b5urf3r
approxEllipse_1.sm
regards,
w3b5urf3r
approxEllipse_1.sm
If you like my plugins please consider to support the program buying a license; for personal contributions to me: paypal.me/dcprojects
#3 Опубликовано: 16.04.2013 12:48:17
thanks a lot man.
so why does eval make the calculations go faster?
so why does eval make the calculations go faster?
#4 Опубликовано: 16.04.2013 12:59:37
thanks a lot man.
so why does eval make the calculations go faster?
The eval() function force a local calculation, so all operations made before the eval are "forgotten" in following calculations (in that point remain a division of two numbers).
Another "best practice" it's to select and set all optimizations to numeric; this could take you some appreciable speed advantages.
best regards,
w3b5urf3r
If you like my plugins please consider to support the program buying a license; for personal contributions to me: paypal.me/dcprojects
#5 Опубликовано: 16.04.2013 13:06:49
duly noted. Much obliged man.
#6 Опубликовано: 16.04.2013 13:11:11
You're welcome 
If you like my plugins please consider to support the program buying a license; for personal contributions to me: paypal.me/dcprojects
#7 Опубликовано: 16.04.2013 13:29:53
Apply an eval() function to theta, rad1 and rad2 (this speed up the worksheet from 15 s to 3 s on my notebook)
regards,
w3b5urf3r
Additionally apply an eval() function to retMatк
regards,Ber7
approxEllipse_1M.sm
#8 Опубликовано: 16.04.2013 13:50:27
much obliged ber. It seems to me, that any heavy calculations done inside a function should be done with an eval statement.
when declaring the definition of a variable, eval should be used if its a calculation. like
a:=5*b
should be
a:=eval( 5 * b )
while,
a:=b
should NOT be
a:=eval( b )
By the way, both ber7 and websurfer are tremendous assets to the community. thanks for posting.
when declaring the definition of a variable, eval should be used if its a calculation. like
a:=5*b
should be
a:=eval( 5 * b )
while,
a:=b
should NOT be
a:=eval( b )
By the way, both ber7 and websurfer are tremendous assets to the community. thanks for posting.
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