FILE * fp;
fp = fopen("file.dat","rb");

#include<stdio.h>
 
int main() {
	FILE *file;
	unsigned char *buffer;
        int i;
	unsigned long fileLen;
 
	//Open file
	file = fopen("TRACE.0000002958000001000000.mpit", "rb");
	if (!file)
	{
		fprintf(stderr, "Unable to open file %s", "test.mpit");
		return;
	}
 
	//Get file length
	fseek(file, 0, SEEK_END);
	fileLen=ftell(file);
	fseek(file, 0, SEEK_SET);
 
	//Allocate memory
	buffer=(unsigned char *)malloc((fileLen+1)*sizeof(unsigned char));
	if (!buffer)
	{
		fprintf(stderr, "Memory error!");
                                fclose(file);
		return;
	}
 
	//Read file contents into buffer
 	fread(buffer, fileLen, 1, file);
	fclose(file);
 
  int ii;
   for(ii = 0;ii < fileLen;++ii)
     printf("%d,  %c n",ii, ((unsigned char *)buffer)[ii]);
	free(buffer);
    printf("%d \n",fileLen);
  }

----------------------------------------------------------------
MPI Routine #calls avg. bytes time(sec)
----------------------------------------------------------------
MPI_Comm_size 2 0.0 0.000
MPI_Comm_rank 1 0.0 0.000
MPI_Send 16827 4714.6 0.067
MPI_Recv 16833 4810.6 0.483
MPI_Probe 6 0.0 0.000
MPI_Bcast 201 7.4 0.013
MPI_Barrier 1 0.0 0.000
MPI_Gather 2 4.0 0.000
MPI_Gatherv 3 23240.0 0.013
MPI_Reduce 300 9.3 0.818
MPI_Allreduce 504 13.5 0.028
----------------------------------------------------------------
total communication time = 1.422 seconds.
total elapsed time = 24.526 seconds.
user cpu time = 24.408 seconds.
system time = 0.030 seconds.
maximum memory size = 15428 KBytes.
----------------------------------------------------------------