/* * Copyright (C) 2001 * National Center for Supercomputing Applications * All rights reserved. * */ /* * Parallel HDF5 Performance Testing Code * -------------------------------------- * * Portable code to test performance on the different platforms we support. * This is what the report should look like: * * nprocs = Max#Procs * IO Type = Raw * # Files = 1, # of dsets = 1000, Elements per dset = 37000 * Write Results = x MB/s * Read Results = x MB/s * # Files = 1, # of dsets = 3000, Elements per dset = 37000 * Write Results = x MB/s * Read Results = x MB/s * * . . . * * IO Type = MPIO * # Files = 1, # of dsets = 1000, Elements per dset = 37000 * Write Results = x MB/s * Read Results = x MB/s * # Files = 1, # of dsets = 3000, Elements per dset = 37000 * Write Results = x MB/s * Read Results = x MB/s * * . . . * * IO Type = PHDF5 * # Files = 1, # of dsets = 1000, Elements per dset = 37000 * Write Results = x MB/s * Read Results = x MB/s * # Files = 1, # of dsets = 3000, Elements per dset = 37000 * Write Results = x MB/s * Read Results = x MB/s * * . . . * * nprocs = Max#Procs / 2 * * . . . * */ /* system header files */ #include #include #include "hdf5.h" #ifdef H5_HAVE_PARALLEL /* library header files */ #include /* our header files */ #include "h5tools_utils.h" #include "pio_perf.h" /* useful macros */ #define TAB_SPACE 4 #define ONE_GB 1073741824UL #if 0 #define MIN_HDF5_BUF_SIZE 1024 #define MAX_HDF5_BUF_SIZE (ONE_GB / 2) #else #define MIN_HDF5_BUF_SIZE 1024*1024*8 #define MAX_HDF5_BUF_SIZE MIN_HDF5_BUF_SIZE*4 #endif /* local variables */ static const char *progname = "pio_perf"; /* * Command-line options: The user can specify short or long-named * parameters. The long-named ones can be partially spelled. When * adding more, make sure that they don't clash with each other. */ #if 1 static const char *s_opts = "ho:"; #else static const char *s_opts = "hbo:"; #endif /* 1 */ static struct long_options l_opts[] = { { "help", no_arg, 'h' }, { "hel", no_arg, 'h' }, { "he", no_arg, 'h' }, #if 0 /* a siting of the elusive binary option */ { "binary", no_arg, 'b' }, { "binar", no_arg, 'b' }, { "bina", no_arg, 'b' }, { "bin", no_arg, 'b' }, { "bi", no_arg, 'b' }, #endif /* 0 */ { "max-size", require_arg, 'm' }, { "max-siz", require_arg, 'm' }, { "max-si", require_arg, 'm' }, { "max-s", require_arg, 'm' }, { "max", require_arg, 'm' }, { "ma", require_arg, 'm' }, { "output", require_arg, 'o' }, { "outpu", require_arg, 'o' }, { "outp", require_arg, 'o' }, { "out", require_arg, 'o' }, { "ou", require_arg, 'o' }, { NULL, 0, '\0' } }; struct options { const char *output_file; /* file to print report to */ long max_size; /* maximum size of file in gigabytes */ }; /* local functions */ static struct options *parse_command_line(int argc, char *argv[]); static void run_test_loop(FILE *output, int max_num_procs, long max_size); static void print_indent(register FILE *output, register int indent); static void usage(const char *prog); /* * Function: main * Purpose: Start things up. Initialize MPI and then call the test looping * function. * Return: EXIT_SUCCESS or EXIT_FAILURE * Programmer: Bill Wendling, 30. October 2001 * Modifications: */ int main(int argc, char **argv) { int world_size, ret; int exit_value = EXIT_SUCCESS; FILE *output = stdout; struct options *opts; opts = parse_command_line(argc, argv); if (opts->output_file) { if ((output = fopen(opts->output_file, "w")) == NULL) { fprintf(stderr, "%s: cannot open output file\n", progname); perror(opts->output_file); goto onions; } } /* initialize MPI and get the maximum num of processors we started with */ MPI_Init(&argc, &argv); ret = MPI_Comm_size(MPI_COMM_WORLD, &world_size); if (ret != MPI_SUCCESS) { fprintf(stderr, "%s: MPI_Comm_size call failed\n", progname); if (ret == MPI_ERR_COMM) fprintf(stderr, "invalid MPI communicator\n"); else fprintf(stderr, "invalid argument\n"); exit_value = EXIT_FAILURE; goto cheese_and; } run_test_loop(output, world_size, opts->max_size); cheese_and: MPI_Finalize(); onions: free(opts); return exit_value; } /* * Function: run_test_loop * Purpose: Run the I/O tests. Write the results to OUTPUT. * * - The slowest changing part of the test is the number of * processors to use. For each loop iteration, we divide that * number by 2 and rerun the test. * * - The second slowest is what type of IO to perform. We have * three choices: RAW, MPI-IO, and PHDF5. * * - Then we change the size of the buffer. This information is * inferred from the number of datasets to create and the number * of integers to put into each dataset. The backend code figures * this out. * * Return: Nothing * Programmer: Bill Wendling, 30. October 2001 * Modifications: */ static void run_test_loop(FILE *output, int max_num_procs, long max_size) { parameters parms; /* num_files stays ``1'' for now but may change later */ parms.num_files = 1; parms.num_iters = 1; /* divide the maximum number of processors by 2 for each loop iter */ for (; max_num_procs > 0; max_num_procs /= 2) { register iotype i; parms.max_num_procs = max_num_procs; fprintf(output, "Number of processors = %u\n", parms.max_num_procs); for (i = RAW; i <= PHDF5; ++i) { register unsigned long j; parms.io_type = i; print_indent(output, TAB_SPACE * 1); fprintf(output, "Type of IO = "); if (i == RAW) fprintf(output, "Raw\n"); else if (i == MPIO) fprintf(output, "MPIO\n"); else fprintf(output, "PHDF5\n"); for (j = MIN_HDF5_BUF_SIZE; j <= MAX_HDF5_BUF_SIZE; j <<= 1) { parms.num_dsets = ONE_GB / j; parms.num_elmts = (max_size * j) / sizeof(int); print_indent(output, TAB_SPACE * 2); fprintf(output, "# of files: %u, # of dsets: %lu, Elements per dset: %lu\n", parms.num_files, parms.num_dsets, parms.num_elmts); /* call Albert's testing here */ do_pio(parms); /* get back ``result'' object and report */ } } } } /* * Function: print_indent * Purpose: Print spaces to indent a new line of text for pretty printing * things. * Return: Nothing * Programmer: Bill Wendling, 29. October 2001 * Modifications: */ static void print_indent(register FILE *output, register int indent) { for (; indent > 0; --indent) fputc(' ', output); fputc('\n', output); } /* * Function: usage * Purpose: Print a usage message and then exit. * Return: Nothing * Programmer: Bill Wendling, 31. October 2001 * Modifications: */ static void usage(const char *prog) { fflush(stdout); fprintf(stdout, "usage: %s [OPTIONS]\n", prog); fprintf(stdout, " OPTIONS\n"); fprintf(stdout, " -h, --help Print a usage message and exit\n"); fprintf(stdout, " -m #, --max-size=# Maximum size of file in gigabytes [default: 2]\n"); fprintf(stdout, " -o F, --output=F Output raw data into file F\n"); fprintf(stdout, "\n"); fprintf(stdout, " F - is a filename.\n"); fprintf(stdout, "\n"); } /* * Function: parse_command_line * Purpose: Parse the command line options and return a STRUCT OPTIONS * structure which will need to be freed by the calling function. * Return: Pointer to an OPTIONS structure * Programmer: Bill Wendling, 31. October 2001 * Modifications: */ static struct options * parse_command_line(int argc, char *argv[]) { int opt; struct options *cl_opts; cl_opts = (struct options *)calloc(1, sizeof(struct options)); cl_opts->max_size = 2; while ((opt = get_option(argc, (const char **)argv, s_opts, l_opts)) != EOF) { switch ((char)opt) { #if 0 case 'b': /* the future "binary" option */ break; #endif /* 0 */ case 'm': cl_opts->max_size = atol(opt_arg); break; case 'o': cl_opts->output_file = opt_arg; break; case 'h': usage(progname); exit(EXIT_SUCCESS); case '?': default: usage(progname); exit(EXIT_FAILURE); } } return cl_opts; } #else /* H5_HAVE_PARALLEL */ /* * Function: main * Purpose: Dummy main() function for if HDF5 was configured without * parallel stuff. * Return: EXIT_SUCCESS * Programmer: Bill Wendling, 14. November 2001 * Modifications: */ int main(void) { printf("No parallel IO performance because parallel is not configured\n"); return EXIT_SUCCESS; } #endif /* !H5_HAVE_PARALLEL */