BigRoyNL
02-17-2011, 09:35 PM
Hey Guys,
I've been wanting to check out speed differences between nodes to speed up my autorigger just every tiny bit extra. But I just couldn't seem to find out which exactly of these two nodes was the fastest and came up with the following way to test it.
Testing the multDoubleLinear node speed:
// testing multDoubleLinear
file -f -new;
shadingNode -asUtility multDoubleLinear;
setAttr "multDoubleLinear1.input1" 1;
setAttr "multDoubleLinear1.input2" 1;
for ($x = 2; $x < 10000; $x++) {
shadingNode -asUtility multDoubleLinear;
connectAttr -f ("multDoubleLinear"+($x-1)+".output") ("multDoubleLinear"+$x+".input1");
setAttr ("multDoubleLinear"+$x+".input2") 2;
select -r ("multDoubleLinear"+$x);
}
{
int $amountOfRepetitions = 20;
int $amountOfFrames = 10000;
float $timings[];
float $total = 0;
for ($x = 0; $x<$amountOfRepetitions ; $x++) {
timer -s;
for ($i = 0 ; $i<$amountOfFrames ; $i++) {
if (`getAttr "multDoubleLinear1.input1"` == 2) {
setAttr "multDoubleLinear1.input1" 2;
}
else {
setAttr "multDoubleLinear1.input1" 1;
}
}
$timer = `timer -e`;
print ($timer+"\n");
$total = $total + $timer;
}
print ("Total time: "+$total+"\nAverage Time: "+($total/$amountOfRepetitions)+"\nFPS: "+(($amountOfRepetitions*$amountOfFrames)/$total)+"\n");
}
Testing the multiplyDivide node speed:
// testing multiplyDivide speed
file -f -new;
shadingNode -asUtility multiplyDivide;
setAttr " multiplyDivide1.input1X" 1;
setAttr " multiplyDivide1.input2X" 1;
for ($x = 2; $x < 10000; $x++) {
shadingNode -asUtility multiplyDivide;
connectAttr -f (" multiplyDivide"+($x-1)+".outputX") (" multiplyDivide"+$x+".input1X");
setAttr ("multiplyDivide"+$x+".input2X") 2;
select -r (" multiplyDivide"+$x);
}
{
int $amountOfRepetitions = 20;
int $amountOfFrames = 10000;
float $timings[];
float $total = 0;
for ($x = 0; $x<$amountOfRepetitions ; $x++) {
timer -s;
for ($i = 0 ; $i<$amountOfFrames ; $i++) {
if (`getAttr " multiplyDivide1.input1X"` == 2) {
setAttr " multiplyDivide1.input1X" 2;
}
else {
setAttr " multiplyDivide1.input1X" 3;
}
}
$timer = `timer -e`;
print ($timer+"\n");
$total = $total + $timer;
}
print ("Total time: "+$total+"\nAverage Time: "+($total/$amountOfRepetitions)+"\nFPS: "+(($amountOfRepetitions*$amountOfFrames)/$total)+"\n");
}
Giving me the results (on both 10.000 nodes and 10.000 calculations on these connected nodes)
The total time is the result of these calculations above done 20 times. The average is for what I said above.
multDoubleLinear
Total time: 7.472
Average Time: 0.3736
FPS: 26766.59529
multiplyDivide
Total time: 10.125
Average Time: 0.50625
FPS: 19753.08642
Oh yeah, the speed difference thus is 0,0000000013 second if you'd just use one for one calculation. :)
So. After I did this. I concluded that the multDoubleLinear would in the end be faster (not noticeably really, but interesting result.)
But I was wondering if it's indeed right to look at these results, if not: What am I doing wrong? And how can I found out which nodes would be faster for my rig and or for what I'm trying to achieve. How can I test this.
Hope somebody knows about this. :)
Thanks in advance.
Bye,
Roy Nieterau
I've been wanting to check out speed differences between nodes to speed up my autorigger just every tiny bit extra. But I just couldn't seem to find out which exactly of these two nodes was the fastest and came up with the following way to test it.
Testing the multDoubleLinear node speed:
// testing multDoubleLinear
file -f -new;
shadingNode -asUtility multDoubleLinear;
setAttr "multDoubleLinear1.input1" 1;
setAttr "multDoubleLinear1.input2" 1;
for ($x = 2; $x < 10000; $x++) {
shadingNode -asUtility multDoubleLinear;
connectAttr -f ("multDoubleLinear"+($x-1)+".output") ("multDoubleLinear"+$x+".input1");
setAttr ("multDoubleLinear"+$x+".input2") 2;
select -r ("multDoubleLinear"+$x);
}
{
int $amountOfRepetitions = 20;
int $amountOfFrames = 10000;
float $timings[];
float $total = 0;
for ($x = 0; $x<$amountOfRepetitions ; $x++) {
timer -s;
for ($i = 0 ; $i<$amountOfFrames ; $i++) {
if (`getAttr "multDoubleLinear1.input1"` == 2) {
setAttr "multDoubleLinear1.input1" 2;
}
else {
setAttr "multDoubleLinear1.input1" 1;
}
}
$timer = `timer -e`;
print ($timer+"\n");
$total = $total + $timer;
}
print ("Total time: "+$total+"\nAverage Time: "+($total/$amountOfRepetitions)+"\nFPS: "+(($amountOfRepetitions*$amountOfFrames)/$total)+"\n");
}
Testing the multiplyDivide node speed:
// testing multiplyDivide speed
file -f -new;
shadingNode -asUtility multiplyDivide;
setAttr " multiplyDivide1.input1X" 1;
setAttr " multiplyDivide1.input2X" 1;
for ($x = 2; $x < 10000; $x++) {
shadingNode -asUtility multiplyDivide;
connectAttr -f (" multiplyDivide"+($x-1)+".outputX") (" multiplyDivide"+$x+".input1X");
setAttr ("multiplyDivide"+$x+".input2X") 2;
select -r (" multiplyDivide"+$x);
}
{
int $amountOfRepetitions = 20;
int $amountOfFrames = 10000;
float $timings[];
float $total = 0;
for ($x = 0; $x<$amountOfRepetitions ; $x++) {
timer -s;
for ($i = 0 ; $i<$amountOfFrames ; $i++) {
if (`getAttr " multiplyDivide1.input1X"` == 2) {
setAttr " multiplyDivide1.input1X" 2;
}
else {
setAttr " multiplyDivide1.input1X" 3;
}
}
$timer = `timer -e`;
print ($timer+"\n");
$total = $total + $timer;
}
print ("Total time: "+$total+"\nAverage Time: "+($total/$amountOfRepetitions)+"\nFPS: "+(($amountOfRepetitions*$amountOfFrames)/$total)+"\n");
}
Giving me the results (on both 10.000 nodes and 10.000 calculations on these connected nodes)
The total time is the result of these calculations above done 20 times. The average is for what I said above.
multDoubleLinear
Total time: 7.472
Average Time: 0.3736
FPS: 26766.59529
multiplyDivide
Total time: 10.125
Average Time: 0.50625
FPS: 19753.08642
Oh yeah, the speed difference thus is 0,0000000013 second if you'd just use one for one calculation. :)
So. After I did this. I concluded that the multDoubleLinear would in the end be faster (not noticeably really, but interesting result.)
But I was wondering if it's indeed right to look at these results, if not: What am I doing wrong? And how can I found out which nodes would be faster for my rig and or for what I'm trying to achieve. How can I test this.
Hope somebody knows about this. :)
Thanks in advance.
Bye,
Roy Nieterau