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I have a c++ function declared as

unsigned char** classify

I am using the following inteface file in SWIG


%module PWrap

Hello,

Has anyone here ever used SWIG before to get your C++ library to java?

I have a method that is declared like so

unsigned char** classify()

and I want to be able to use this method...

I think I figured it out. I thought memalign was something standard (it's in stdlib) but it is only for the IRIX platform. It is made to allocated the space with a certain alignment. I am going to...

Hi all. I have a program that I have been compiling using MIPS compiler. I have recently been tasked to port this to our new Intel system using icc.

It compiles fine, but when I run it, I get...

In C, I want to loop through an array in this order

for(int z = 0; z < NZ; z++)
for(int x = 0; x < NX; Z++)
for(int y = 0; y < NY; y++)
3Darray[x][y][z] = 100;

...

I discovered that my problem was that I did not have my arrays defined contiguously. That being said, if I want to loop in this order:
for z =...
for x =...
for y =...

and access everything...

Thanks for the suggestions, I will check into it monday when i get access back to the compiler/system.

Hi all. The following code (which I am typing in, excuse my typos please) is not working as expected.




#include <stdlib.h>
#include <mpi.h>
#include <stdio.h>

int main(int argc, char...

Hi all,

I am looking to find some resources online that show how you might send/recv portions of a 3D array in MPI using C.

Basically, I want to be able to send each 2D layer of the 3D matrix...

Ah. I tracked it down. I had to include stdio.h and stdlib.h to supress the errors about casting the malloc as a (double**) and get the correct return. Thanks for the help..I didnt think I needed that

I actually tried exactly what you in that main function, all by itself,and didnt get a correct answer. Let me double check one last time, and I will be back in a sec.

hi all

I am using the following code, which is printing a value of 0.0 instead of 212.0. What am I doing wrong?




double **u;
int N = 52;
int i;

There are a lot of profilers that will measure memory access. Speedshop, totalview, etc

So, I think here is the crux of the problem: How do you optimize a forward and backward looking loop? I am not too concerned with memory here, so I had an idea.

The problem has n total nodes in...

I will check it out. Thanks!

Parallel Programming In C. Chap. IX

This is not exactly like what I am doing, but it may give you an idea of the 2D problem.

So the red black method could be used where the east/west/north/south neighbors are needed in a 2D grid to update the n'th member of the grid. I am trying to find out what people use when we are now...

I am trying to find an algorithm that is an efficient way to update the 6 "neighbors" of a point in threespace.
Is this enough information to explain the problem? I suppose it is referred to as an...

Thanks, I will see what I can do about posting a compilable example with the proper characteristics. There is a lot of other work being done in the outer loops, which is why they cannot be removed....

I wanted to post up better psuedo code the reflects what I think is the real problem with this code.





typedef struct{
double *xp;
double cp;
} SV_FDIndx

Quite the opposite actually...I KNOW this code is slow. I think I figured out what the one other problem is. There was a typedef defined that points to the structure. Deep down in a set of loops,...

It is quite a large code. I will see if I can work up a compilable example, or at least get the exact layout of what is currently happening posted tomorrow. Sleep for now!

theObject = (typeNamep) some_function_returning_data();

I did just realize i had a slight error with this line. I will get back to you guys with real code when I get a chance (hard to get...

Hello all. Forgive me if I do not post any real code snippets just yet. This is my first post, so I'm just mostly saying hello for now. Until I get a chance to get a look at the code I am working...