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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by the Board of Trustees of the University of Illinois. *
* All rights reserved. *
* *
* This file is part of HDF5. The full HDF5 copyright notice, including *
* terms governing use, modification, and redistribution, is contained in *
* the files COPYING and Copyright.html. COPYING can be found at the root *
* of the source code distribution tree; Copyright.html can be found at the *
* root level of an installed copy of the electronic HDF5 document set and *
* is linked from the top-level documents page. It can also be found at *
* http://hdf.ncsa.uiuc.edu/HDF5/doc/Copyright.html. If you do not have *
* access to either file, you may request a copy from hdfhelp@ncsa.uiuc.edu. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
#include "h5diff.h"
#include "ph5diff.h"
#include <stdlib.h>
#include <assert.h>
#include "h5diff_common.h"
static void ph5diff_worker(int );
/*-------------------------------------------------------------------------
* Function: main
*
* Purpose: h5diff/ph5diff main program
*
* Return: An exit status of 0 means no differences were found, 1 means some
* differences were found.
*
* Programmer: Pedro Vicente, pvn@ncsa.uiuc.edu
*
* Date: May 9, 2003
*
* Comments:
*
* Modifications: July 2004
* Introduced the four modes:
* Normal mode: print the number of differences found and where they occured
* Report mode: print the above plus the differences
* Verbose mode: print the above plus a list of objects and warnings
* Quiet mode: do not print output
*
* November 2004: Leon Arber (larber@uiuc.edu)
* Additions that allow h5diff to be run in parallel
*
* This function drives the diff process and will do a serial or parallel diff depending
* on the value of the global variable g_Parallel (default is 0), set to 1 when the program
* is run as "ph5diff"
*-------------------------------------------------------------------------
*/
int main(int argc, const char *argv[])
{
int nID = 0;
const char *fname1 = NULL;
const char *fname2 = NULL;
const char *objname1 = NULL;
const char *objname2 = NULL;
hsize_t nfound=0;
diff_opt_t options;
outBuffOffset = 0;
g_Parallel = 1;
MPI_Init(&argc, (char***) &argv);
MPI_Comm_rank(MPI_COMM_WORLD, &nID);
MPI_Comm_size(MPI_COMM_WORLD, &g_nTasks);
if(g_nTasks == 1)
{
printf("Only 1 task available...doing serial diff\n");
g_Parallel = 0;
parse_input(argc, argv, &fname1, &fname2, &objname1, &objname2, &options);
nfound = h5diff(fname1,fname2,objname1,objname2,&options);
print_results(&options);
MPI_Finalize();
return 0;
}
/* Have the manager process the command-line */
if(nID == 0)
{
parse_input(argc, argv, &fname1, &fname2, &objname1, &objname2, &options);
nfound = h5diff(fname1,fname2,objname1,objname2,&options);
MPI_Barrier(MPI_COMM_WORLD);
print_results(&options);
print_manager_output();
MPI_Finalize();
return 0;
}
/* All other tasks become workers and wait for assignments. */
else
ph5diff_worker(nID);
}
/*-------------------------------------------------------------------------
* Function: ph5diff_worker
*
* Purpose: worker process of ph5diff
*
* Return: none
*
* Programmer: Leon Arber
* Date: January 2005
*
* Comments:
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
static void
ph5diff_worker(int nID)
{
struct diff_args args;
hid_t file1_id, file2_id;
char filenames[2][1024];
char out_data[PRINT_DATA_MAX_SIZE] = {0};
hsize_t nfound=0;
struct diffs_found diffs;
int i;
MPI_Status Status;
MPI_Comm_rank(MPI_COMM_WORLD, &nID);
outBuffOffset = 0;
MPI_Recv(filenames, 1024*2, MPI_CHAR, 0, MPI_ANY_TAG, MPI_COMM_WORLD, &Status);
if(Status.MPI_TAG == MPI_TAG_PARALLEL)
{
/* disable error reporting */
H5E_BEGIN_TRY
{
/* Open the files */
if ((file1_id = H5Fopen (filenames[0], H5F_ACC_RDONLY, H5P_DEFAULT)) < 0)
{
printf ("h5diff Task [%d]: <%s>: unable to open file\n", nID, filenames[0]);
MPI_Abort(MPI_COMM_WORLD, 0);
}
if ((file2_id = H5Fopen (filenames[1], H5F_ACC_RDONLY, H5P_DEFAULT)) < 0)
{
printf ("h5diff Task [%d]: <%s>: unable to open file\n", nID, filenames[1]);
MPI_Abort(MPI_COMM_WORLD, 0);
}
/* enable error reporting */
}
H5E_END_TRY;
while(1)
{
MPI_Probe(0, MPI_ANY_TAG, MPI_COMM_WORLD, &Status);
if(Status.MPI_TAG == MPI_TAG_ARGS)
{
/*Recv parameters for diff from manager task */
MPI_Recv(&args, sizeof(struct diff_args), MPI_BYTE, 0, MPI_TAG_ARGS, MPI_COMM_WORLD, &Status);
/*Do the diff */
nfound = diff(file1_id, args.name, file2_id, args.name, &(args.options), args.type);
diffs.nfound = nfound;
diffs.not_cmp = args.options.not_cmp;
/*If print buffer has something in it, request print token.*/
if(outBuffOffset>0)
{
MPI_Send(NULL, 0, MPI_BYTE, 0, MPI_TAG_TOK_REQUEST, MPI_COMM_WORLD);
/*Wait for print token. */
MPI_Recv(NULL, 0, MPI_BYTE, 0, MPI_TAG_PRINT_TOK, MPI_COMM_WORLD, &Status);
/*When get token, send all of our output to the manager task and then return the token */
for(i=0; i<outBuffOffset; i+=PRINT_DATA_MAX_SIZE)
MPI_Send(outBuff+i, PRINT_DATA_MAX_SIZE, MPI_BYTE, 0, MPI_TAG_PRINT_DATA, MPI_COMM_WORLD);
/* An overflow file exists, so we send it's output to the manager too and then delete it */
if(overflow_file)
{
int tmp;
memset(out_data, 0, PRINT_DATA_MAX_SIZE);
i=0;
rewind(overflow_file);
while((tmp = getc(overflow_file)) >= 0)
{
*(out_data + i++) = (char)tmp;
if(i==PRINT_DATA_MAX_SIZE)
{
MPI_Send(out_data, PRINT_DATA_MAX_SIZE, MPI_BYTE, 0, MPI_TAG_PRINT_DATA, MPI_COMM_WORLD);
i=0;
memset(out_data, 0, PRINT_DATA_MAX_SIZE);
}
}
if(i>0)
MPI_Send(out_data, PRINT_DATA_MAX_SIZE, MPI_BYTE, 0, MPI_TAG_PRINT_DATA, MPI_COMM_WORLD);
fclose(overflow_file);
overflow_file = NULL;
}
fflush(stdout);
memset(outBuff, 0, OUTBUFF_SIZE);
outBuffOffset = 0;
MPI_Send(&diffs, sizeof(diffs), MPI_BYTE, 0, MPI_TAG_TOK_RETURN, MPI_COMM_WORLD);
}
else
MPI_Send(&diffs, sizeof(diffs), MPI_BYTE, 0, MPI_TAG_DONE, MPI_COMM_WORLD);
}
else if(Status.MPI_TAG == MPI_TAG_END)
{
MPI_Recv(NULL, 0, MPI_BYTE, 0, MPI_TAG_END, MPI_COMM_WORLD, &Status);
/* printf("exiting..., task: %d\n", nID);
fflush(stdout);*/
break;
}
else
{
printf("ph5diff_worker: ERROR: invalid tag (%d) received\n", Status.MPI_TAG);
MPI_Abort(MPI_COMM_WORLD, 0);
}
}
}
MPI_Barrier(MPI_COMM_WORLD);
MPI_Finalize();
}
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