I am converting a C program to its equivalent CUDA version. I am not sure how to read a 2D array from a file.
Here’s how we would read a 2D array in C:
[codebox]if ((image1 = fopen(“image1.txt”, “r”)) == NULL)
{
printf("\n ERROR - Cannot open the designated file\n");
}
else
{
do {
for(j = 0; j < pix2; ++j)
{
for(i = 0; i < pix1; ++i)
{
fscanf(image1, "%lf", &im1[i][j]);
}
}
} while(!feof(image1));
printf("\nSUCCESS - Files can be read\n");
}
/* Check values */
for(i = 64; i < 65; ++i)
{
for(j = 1; j < 65; ++j)
{
printf("im1[%d][%d] = %lf \n",i,j,im1[i][j]);
}
}
[/codebox]
CUDA equivalent for reading files?
[codebox]
unsigned int data_read = pix1 * pix2;
cutReadFiled(“image1.txt”, &im1, &data_read, true); // reading double values [/codebox]
How do I check the values of im1? any pointers? [:P]
Also I would like to compare the values of 2D arrays and thought of using this function from cutil.h
[codebox]
// Check values
CUTBoolean res = cutComparefe(in1, in2, nx * ny, 0.0001f); // in1 and in2 are 2D arrays of size nx * ny
printf(“Test %s\n”, (1 == res) ? “PASSED” : “FAILED”);
[/codebox]
Is this the correct way ??