C# vs. C++ performance [modified] (Contest)
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Jeffry J. Brickley wrote:
change to 562 Intel 8.0 and MSVC 6.0
Wrong! You should test both program on your computer! because my computer is probably much slower than yours! otherwise you compare my C# version on my PC to you C++ version on your PC. well, all the C++ coder seems afraid to see the truth I could see... ;P
Super Lloyd wrote:
well, all the C++ coder seems afraid to see the truth I could see...
Not all of us have C# on every machine.... but it was on a 3.0ghz Intel P4. what machine was yours on?
_________________________ Asu no koto o ieba, tenjo de nezumi ga warau. Talk about things of tomorrow and the mice in the ceiling laugh. (Japanese Proverb)
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Super Lloyd wrote:
C++ 10000 Milliseconds = 1313
change to 562 Intel 8.0 and MSVC 6.0 You are running twice the time of "last generation's technology." :) shall I load up Intel 9.0 on another machine and make the difference greater? -- modified at 11:47 Tuesday 1st August, 2006
_________________________ Asu no koto o ieba, tenjo de nezumi ga warau. Talk about things of tomorrow and the mice in the ceiling laugh. (Japanese Proverb)
In case you don't know how to compile C# let's at least compare the computer's spec. I have and AMD Semprom 2800+ 1.61 GHz
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Super Lloyd wrote:
well, all the C++ coder seems afraid to see the truth I could see...
Not all of us have C# on every machine.... but it was on a 3.0ghz Intel P4. what machine was yours on?
_________________________ Asu no koto o ieba, tenjo de nezumi ga warau. Talk about things of tomorrow and the mice in the ceiling laugh. (Japanese Proverb)
AMD Sempron 2800+ 1.61 GHz No wonder you are twice as fast!
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On another thread some posted this link: http://www.csharphelp.com/archives2/archive458.html[^] Now I was very suprised by this bad C# result, it's not at all what I experience! So I decided to test my self! I have .NET 2 and gcc 3.4.4 I compiled like this: CPP> gcc -O3 -o sieve2.exe sieve.cpp -lstdc++ C#> csc /o+ /nologo /out:sieve.exe Sieve.cs I got: C# 10000 Milliseconds = 1156 C++ 10000 Milliseconds = 1313 Haheum..... what else can I say? -- modified at 11:18 Tuesday 1st August, 2006 I propose a Contest. Post a small C++ performance test program here (less than 200 readable lines). I'll try to beat it with a C# version!
on my machine C# (VS05) : 812 C++ (VC6) : 578 C++ (VS03) : 609 the C++ app won't run on VS05. out of range error in one of the vector iterator hits. default release build settings, for each -- modified at 12:04 Tuesday 1st August, 2006
Why donchoo take a peekchur mayn? OK, cleeeeek
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on my machine C# (VS05) : 812 C++ (VC6) : 578 C++ (VS03) : 609 the C++ app won't run on VS05. out of range error in one of the vector iterator hits. default release build settings, for each -- modified at 12:04 Tuesday 1st August, 2006
Why donchoo take a peekchur mayn? OK, cleeeeek
Ha... good! okay.....
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On another thread some posted this link: http://www.csharphelp.com/archives2/archive458.html[^] Now I was very suprised by this bad C# result, it's not at all what I experience! So I decided to test my self! I have .NET 2 and gcc 3.4.4 I compiled like this: CPP> gcc -O3 -o sieve2.exe sieve.cpp -lstdc++ C#> csc /o+ /nologo /out:sieve.exe Sieve.cs I got: C# 10000 Milliseconds = 1156 C++ 10000 Milliseconds = 1313 Haheum..... what else can I say? -- modified at 11:18 Tuesday 1st August, 2006 I propose a Contest. Post a small C++ performance test program here (less than 200 readable lines). I'll try to beat it with a C# version!
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on my machine C# (VS05) : 812 C++ (VC6) : 578 C++ (VS03) : 609 the C++ app won't run on VS05. out of range error in one of the vector iterator hits. default release build settings, for each -- modified at 12:04 Tuesday 1st August, 2006
Why donchoo take a peekchur mayn? OK, cleeeeek
Is it .NET2?? .NET2 is much better than .NET1 !
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Is it .NET2?? .NET2 is much better than .NET1 !
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Good!
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Alright, you won! ;)
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AMD Sempron 2800+ 1.61 GHz No wonder you are twice as fast!
Super Lloyd wrote:
No wonder you are twice as fast!
grumble grumble growl... you made me pull out my 7.2 .net on the laptop, compile, move the application over and run... ;P 1000ms C# 562 Intel C++ Satisfied yet? yes, I moved to release on both, yes, using optimized on both rather than YOUR optimized on one and non on the other....
_________________________ Asu no koto o ieba, tenjo de nezumi ga warau. Talk about things of tomorrow and the mice in the ceiling laugh. (Japanese Proverb)
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Super Lloyd wrote:
No wonder you are twice as fast!
grumble grumble growl... you made me pull out my 7.2 .net on the laptop, compile, move the application over and run... ;P 1000ms C# 562 Intel C++ Satisfied yet? yes, I moved to release on both, yes, using optimized on both rather than YOUR optimized on one and non on the other....
_________________________ Asu no koto o ieba, tenjo de nezumi ga warau. Talk about things of tomorrow and the mice in the ceiling laugh. (Japanese Proverb)
Hey, I did optimize both! didn't you see the -O3 ?! Well the result are... well.... I didn't know gcc was that bad!.... :omg: That make me rethink about life! :laugh:
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On another thread some posted this link: http://www.csharphelp.com/archives2/archive458.html[^] Now I was very suprised by this bad C# result, it's not at all what I experience! So I decided to test my self! I have .NET 2 and gcc 3.4.4 I compiled like this: CPP> gcc -O3 -o sieve2.exe sieve.cpp -lstdc++ C#> csc /o+ /nologo /out:sieve.exe Sieve.cs I got: C# 10000 Milliseconds = 1156 C++ 10000 Milliseconds = 1313 Haheum..... what else can I say? -- modified at 11:18 Tuesday 1st August, 2006 I propose a Contest. Post a small C++ performance test program here (less than 200 readable lines). I'll try to beat it with a C# version!
Super Lloyd wrote:
I propose a Contest. Post a small C++ performance test program here (less than 200 readable lines). I'll try to beat it with a C# version!
From the top of my head:
#include <iostream>
using namespace std;int main()
{
double sum = 0.;
for (unsigned i = 0; i < 0xffffffU; ++i) {
char buffer[1024];
for (int j = 0; j < 1024; ++j)
sum += buffer[j];
}
cout << sum;
}-- modified at 12:20 Tuesday 1st August, 2006
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AMD Sempron 2800+ 1.61 GHz No wonder you are twice as fast!
Super Lloyd wrote:
AMD Sempron 2800+ 1.61 GHz No wonder you are twice as fast!
I just looked at your specs... you realize that the 2800+ is the relative performance compared to an Intel right? My AMD is only 1.8ghz and runs faster than this one at work. I don't have any of my fast computers at the moment. :)
_________________________ Asu no koto o ieba, tenjo de nezumi ga warau. Talk about things of tomorrow and the mice in the ceiling laugh. (Japanese Proverb)
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I tried cl /O2 /EHsc sieve.cpp It compiled without any message but crashed right away... Now, if C++ is so much more powerfull, why do I need an optimized compiler? :doh:
Super Lloyd wrote:
Now, if C++ is so much more powerfull, why do I need an optimized compiler?
You obviously have no clue as to the difference between what a compiler is and what a language is.
Jeremy Falcon
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On another thread some posted this link: http://www.csharphelp.com/archives2/archive458.html[^] Now I was very suprised by this bad C# result, it's not at all what I experience! So I decided to test my self! I have .NET 2 and gcc 3.4.4 I compiled like this: CPP> gcc -O3 -o sieve2.exe sieve.cpp -lstdc++ C#> csc /o+ /nologo /out:sieve.exe Sieve.cs I got: C# 10000 Milliseconds = 1156 C++ 10000 Milliseconds = 1313 Haheum..... what else can I say? -- modified at 11:18 Tuesday 1st August, 2006 I propose a Contest. Post a small C++ performance test program here (less than 200 readable lines). I'll try to beat it with a C# version!
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Super Lloyd wrote:
Now, if C++ is so much more powerfull, why do I need an optimized compiler?
You obviously have no clue as to the difference between what a compiler is and what a language is.
Jeremy Falcon
if it is so obvious there is no need to add anything ;P although I could comment that I do have no clue about what is the diference between the gcc compiler and an optimized compiler ;P
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I simply took the sources from the article: http://www.csharphelp.com/archives2/archive458.html[^]
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Super Lloyd wrote:
Hey, GCC is not so bad!
Nope, it's only slower than C#, that is a great selling point! :laugh:
_________________________ Asu no koto o ieba, tenjo de nezumi ga warau. Talk about things of tomorrow and the mice in the ceiling laugh. (Japanese Proverb)
If I'm using MSVC, do you think it's really worth it to switch over to Intel's compiler? And, does it integrate into VS? Just curious to know, as I've never used it, but I've heard positive stories about it.
Jeremy Falcon
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Super Lloyd wrote:
I propose a Contest. Post a small C++ performance test program here (less than 200 readable lines). I'll try to beat it with a C# version!
From the top of my head:
#include <iostream>
using namespace std;int main()
{
double sum = 0.;
for (unsigned i = 0; i < 0xffffffU; ++i) {
char buffer[1024];
for (int j = 0; j < 1024; ++j)
sum += buffer[j];
}
cout << sum;
}-- modified at 12:20 Tuesday 1st August, 2006
Well, previous post have shown the speed superiority of C++ already. And the slowness of GCC as well. And it's time to go to bed for me so I won't test it now. But here is the C# version:
using System;
class Test
{
static void Main()
{
double sum;
// you can't use unintialized buffer in C#
// and I though a new at each iteration was overkill
char[] buf = new char[1024];
for(uint i=0; i