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utils.c
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utils.c
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/*
* The entirety of this work is licensed under the Apache License,
* Version 2.0 (the "License"); you may not use this file except
* in compliance with the License.
*
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <network_test.h>
/* these establish the size of the table written to STDOUT */
#ifdef VERBOSE
#define TBLSIZE 140
#else
#define TBLSIZE 80
#endif
char table_outerbar[TBLSIZE+1], table_innerbar[TBLSIZE+1], print_buffer[TBLSIZE+1];
void die(char* errmsg)
{
fprintf(stderr, "%s\n", errmsg);
exit(EXIT_FAILURE);
}
void mpi_error(int ierr)
{
if (ierr == MPI_SUCCESS) return;
char err_string[MPI_MAX_ERROR_STRING];
int err_length;
MPI_Error_string(ierr, err_string, &err_length);
fprintf(stderr, "%s\n", err_string);
exit(1);
}
/* simple string sorting routine for ordering hostnames */
int cstring_cmp(const void *a, const void *b)
{
const char **ia = (const char **)a;
const char **ib = (const char **)b;
return strcmp(*ia, *ib);
}
/* initialize MPI, detect node+rank layout, and setup various testing options */
int init_mpi(CommConfig_t *config, CommNodes_t *nodes, int *argc, char ***argv, int rmacnt, int p2pcnt,
int a2acnt, int incastcnt, int bcastcnt, int allreducecnt, int bw_outstanding)
{
int i, ierr, nranks, hname_len;
char local_hname[MPI_MAX_PROCESSOR_NAME], last_hname[MPI_MAX_PROCESSOR_NAME];
char *all_hnames, **sort_all_hnames;
config->bw_outstanding = bw_outstanding;
config->p2pbw_cnt = p2pcnt;
config->rmabw_cnt = rmacnt;
config->a2a_cnt = a2acnt;
config->ar_cnt = allreducecnt;
config->incast_cnt = incastcnt;
config->bcast_cnt = bcastcnt;
config->rma_window = MPI_WIN_NULL;
config->rma_a2a_window = MPI_WIN_NULL;
config->p2p_buffer = NULL;
config->a2a_sbuffer = NULL;
config->a2a_rbuffer = NULL;
config->ar_sbuffer = NULL;
config->ar_rbuffer = NULL;
mpi_error(MPI_Init(argc, argv));
mpi_error(MPI_Comm_rank(MPI_COMM_WORLD, &config->myrank));
mpi_error(MPI_Comm_size(MPI_COMM_WORLD, &config->nranks));
/* get the list of nodes across all ranks */
all_hnames = malloc(sizeof(char) * config->nranks * MPI_MAX_PROCESSOR_NAME);
if (all_hnames == NULL) {
die("Failed to allocate all_hnames in init_mpi()\n");
}
sort_all_hnames = malloc(sizeof(char *) * config->nranks);
if (sort_all_hnames == NULL) {
die("Failed to allocate sort_all_hnames in init_mpi()\n");
}
for (i = 0; i < config->nranks; i++) {
sort_all_hnames[i] = malloc(sizeof(char) * MPI_MAX_PROCESSOR_NAME);
if (sort_all_hnames[i] == NULL) {
die("Failed to allocate sort_all_hnames[] in init_mpi()\n");
}
}
mpi_error(MPI_Get_processor_name(local_hname, &hname_len));
mpi_error(MPI_Allgather(local_hname, MPI_MAX_PROCESSOR_NAME, MPI_CHAR, all_hnames,
MPI_MAX_PROCESSOR_NAME, MPI_CHAR, MPI_COMM_WORLD));
for (i = 0; i < config->nranks; i++) {
memcpy(sort_all_hnames[i], &all_hnames[i*MPI_MAX_PROCESSOR_NAME], MPI_MAX_PROCESSOR_NAME);
}
/* generate the list of unqiue nodes */
qsort(sort_all_hnames, config->nranks, sizeof(char *), cstring_cmp);
nodes->nnodes = 0;
nodes->nodes_head = NULL;
for (i = 0; i < config->nranks; i++) {
ierr = strncmp(last_hname, sort_all_hnames[i], MPI_MAX_PROCESSOR_NAME);
if (ierr != 0) {
CommNode_t *tmp = malloc(sizeof(CommNode_t));
if (tmp == NULL) {
die("Failed to allocate tmp CommNode_t in init_mpi()\n");
}
strcpy(tmp->host_name, sort_all_hnames[i]);
tmp->ppn = 0;
tmp->node_id = nodes->nnodes;
tmp->next = NULL;
tmp->last = NULL;
tmp->ranks_head = NULL;
if (nodes->nodes_head == NULL) {
nodes->nodes_head = tmp;
} else {
tmp->last = nodes->nodes;
nodes->nodes->next = tmp;
}
nodes->nodes = tmp;
nodes->nnodes++;
}
strcpy(last_hname, sort_all_hnames[i]);
}
/* scan back through and generate the ranks for each unique node */
for (i = 0; i < config->nranks; i++) {
CommNode_t *tmp = nodes->nodes_head;
while (tmp != NULL) {
ierr = strncmp(&all_hnames[i*MPI_MAX_PROCESSOR_NAME], tmp->host_name, MPI_MAX_PROCESSOR_NAME);
if (ierr == 0) {
CommRank_t *rtmp = malloc(sizeof(CommRank_t));
if (tmp == NULL) {
die("Failed to allocate rtmp CommRank_t in init_mpi()\n");
}
rtmp->rank = i;
rtmp->next = NULL;
rtmp->last = NULL;
rtmp->node_rank = tmp->ppn;
if (rtmp->rank == config->myrank) {
config->mynode_rank = rtmp->node_rank;
config->mynode = tmp;
}
tmp->ppn++;
if (tmp->ranks_head == NULL) {
tmp->ranks_head = rtmp;
} else {
rtmp->last = tmp->ranks;
tmp->ranks->next = rtmp;
}
tmp->ranks = rtmp;
tmp = NULL;
} else {
tmp = tmp->next;
}
}
}
for (i = 0; i < config->nranks; i++) {
free(sort_all_hnames[i]);
}
free(sort_all_hnames);
free(all_hnames);
/* the factor of 4 is for 2 neighbors both send+recv */
int count = 4 * p2pcnt;
if (config->bcast_cnt > count) count = config->bcast_cnt;
MPI_Aint p2p_length = sizeof(double) * (MPI_Aint)count;
mpi_error(MPI_Alloc_mem(p2p_length, MPI_INFO_NULL, &config->p2p_buffer));
if (ierr != MPI_SUCCESS) {
die("Failed to allocate p2p_buffer in init_mpi()\n");
}
memset(config->p2p_buffer, 0, p2p_length);
/* last we initialize the pretty table row separators */
table_outerbar[TBLSIZE] = '\0';
table_innerbar[TBLSIZE] = '\0';
print_buffer[TBLSIZE] = '\0';
for (i = 0; i < TBLSIZE; i++) {
table_outerbar[i] = '-';
table_innerbar[i] = '-';
print_buffer[i] = '\0';
}
table_outerbar[0] = '+';
table_outerbar[TBLSIZE-1] = '+';
table_innerbar[0] = '+';
table_innerbar[TBLSIZE-1] = '+';
table_innerbar[34] = '+';
#ifdef VERBOSE
for (i = 1; i < 7; i++) {
#else
for (i = 1; i < 3; i++) {
#endif
table_innerbar[34+i*15] = '+';
}
return 0;
}
int init_rma(CommConfig_t *config, MPI_Comm comm)
{
int ierr;
int count = 4 * config->rmabw_cnt;
if (config->bcast_cnt > count) count = config->bcast_cnt;
/* the factor of 4 is for 2 neighbors both send+recv */
MPI_Aint window_length = (MPI_Aint)sizeof(double) * (MPI_Aint)count;
ierr = MPI_Win_allocate(window_length, sizeof(double), MPI_INFO_NULL, comm, &config->rma_buffer, &config->rma_window);
if (ierr != MPI_SUCCESS) {
die("Failed to allocate RMA window in init_rma()\n");
}
memset(config->rma_buffer, 0, window_length);
return 0;
}
int init_rma_a2a(CommConfig_t *config, MPI_Comm comm)
{
int ierr, comm_size, count;
count = config->a2a_cnt;
if (config->incast_cnt > count) count = config->incast_cnt;
mpi_error(MPI_Comm_size(comm, &comm_size));
MPI_Aint window_length = (MPI_Aint)sizeof(double) * 2L * (MPI_Aint)count * (MPI_Aint)comm_size;
ierr = MPI_Win_allocate(window_length, sizeof(double), MPI_INFO_NULL, comm, &config->rma_a2a_buffer, &config->rma_a2a_window);
if (ierr != MPI_SUCCESS) {
die("Failed to allocate RMA window in init_rma_a2a()\n");
}
memset(config->rma_a2a_buffer, 0, window_length);
return 0;
}
/* cleanup data structures and finalize MPI */
int finalize_mpi(CommConfig_t *config, CommNodes_t *nodes)
{
int i, j;
CommNode_t *tmp = nodes->nodes;
for (i = 0; i < nodes->nnodes; i++) {
CommRank_t *rtmp = tmp->ranks;
for (j = 0; j < tmp->ppn; j++) {
CommRank_t *rprev = rtmp->last;
free(rtmp);
rtmp = rprev;
}
CommNode_t *prev = tmp->last;
free(tmp);
tmp = prev;
}
if (config->rma_window != MPI_WIN_NULL) {
mpi_error(MPI_Win_free(&config->rma_window));
}
if (config->rma_a2a_window != MPI_WIN_NULL) {
mpi_error(MPI_Win_free(&config->rma_a2a_window));
}
if (config->p2p_buffer != NULL ) MPI_Free_mem(config->p2p_buffer);
if (config->a2a_sbuffer != NULL) MPI_Free_mem(config->a2a_sbuffer);
if (config->a2a_rbuffer != NULL) MPI_Free_mem(config->a2a_rbuffer);
if (config->ar_sbuffer != NULL ) MPI_Free_mem(config->ar_sbuffer);
if (config->ar_rbuffer != NULL ) MPI_Free_mem(config->ar_rbuffer);
mpi_error(MPI_Finalize());
return 0;
}
/* shuffle a list in place */
void shuffle(int *list, int size, int seed, int call)
{
int i, j, buff;
if (call == 0) {
srand(seed);
}
for (i = (size-1); i > 0; i--) {
j = rand() % i;
buff = list[j];
list[j] = list[i];
list[i] = buff;
}
}
/* separate allocation for A2A buffers since they are optional and large */
int a2a_buffers(CommConfig_t *config, MPI_Comm comm)
{
int ierr, comm_size, count;
count = config->a2a_cnt;
if (config->incast_cnt > count) count = config->incast_cnt;
mpi_error(MPI_Comm_size(comm, &comm_size));
MPI_Aint length = sizeof(double) * count * comm_size;
ierr = MPI_Alloc_mem(length, MPI_INFO_NULL, &config->a2a_sbuffer);
if (ierr != MPI_SUCCESS) {
die("Failed to allocate a2a_sbuffer in a2a_buffers()\n");
}
ierr = MPI_Alloc_mem(length, MPI_INFO_NULL, &config->a2a_rbuffer);
if (ierr != MPI_SUCCESS) {
die("Failed to allocate a2a_rbuffer in a2a_buffers()\n");
}
memset(config->a2a_sbuffer, 0, length);
memset(config->a2a_rbuffer, 0, length);
return 0;
}
/* separate allocation for allreduce buffers since they are optional and large */
int allreduce_buffers(CommConfig_t *config, MPI_Comm comm)
{
int ierr, comm_size, count;
count = config->ar_cnt;
mpi_error(MPI_Comm_size(comm, &comm_size));
MPI_Aint length = sizeof(double) * count;
ierr = MPI_Alloc_mem(length, MPI_INFO_NULL, &config->ar_sbuffer);
if (ierr != MPI_SUCCESS) {
die("Failed to allocate a2a_sbuffer in a2a_buffers()\n");
}
ierr = MPI_Alloc_mem(length, MPI_INFO_NULL, &config->ar_rbuffer);
if (ierr != MPI_SUCCESS) {
die("Failed to allocate a2a_rbuffer in a2a_buffers()\n");
}
memset(config->ar_sbuffer, 0, length);
memset(config->ar_rbuffer, 0, length);
return 0;
}
int print_results(CommConfig_t *config, int localrank, int havedata, int from_min, char *name, char *units, CommResults_t * results)
{
if (havedata && localrank == 0) {
double avgworst = results->avgmin;
if (from_min) avgworst = results->avgmax;
#ifdef VERBOSE
snprintf(print_buffer, TBLSIZE+1, "| %31.31s | %12.1f | %12.1f | %12.1f | %12.1f | %12.1f | %12.1f | %12.12s |",
name, results->minval, results->maxval, results->avg, avgworst, results->percentile_99,
results->percentile_999, units);
#else
snprintf(print_buffer, TBLSIZE+1, "| %31.31s | %12.1f | %12.1f | %12.12s |",
name, results->avg, results->percentile_99, units);
#endif
}
/* if we are not comm_world rank 0 and we have forward it to comm_world rank 0 */
if (localrank == 0 && havedata && config->myrank != 0 ) {
mpi_error(MPI_Send(print_buffer, TBLSIZE, MPI_CHAR, 0, 511, MPI_COMM_WORLD));
} else if (config->myrank == 0 && (localrank != 0 || ! havedata)) {
mpi_error(MPI_Recv(print_buffer, TBLSIZE, MPI_CHAR, MPI_ANY_SOURCE, 511, MPI_COMM_WORLD, MPI_STATUS_IGNORE));
}
if (config->myrank == 0) {
printf("%s\n", print_buffer);
printf("%s\n", table_innerbar);
fflush(stdout);
}
return 0;
}
int print_comparison_results(CommConfig_t *config, int localrank, int havedata, int from_min,
char *name, CommResults_t * base_results, CommResults_t * results)
{
int fl=16;
if (havedata && localrank == 0) {
char b99[fl], bavg[fl], n99[fl], navg[fl];
snprintf(n99, fl, "%12.1f", results->percentile_99);
snprintf(navg, fl, "%12.1f", results->avg);
snprintf(b99, fl, "%12.1f", base_results->percentile_99);
snprintf(bavg, fl, "%12.1f", base_results->avg);
double slowdown99 = (from_min) ? atof(n99) / atof(b99) : atof(b99) / atof(n99);
double slowdownavg = (from_min) ? atof(navg) / atof(bavg) : atof(bavg) / atof(navg);
snprintf(print_buffer, TBLSIZE+1, "| %31.31s | %19.1fX | %18.1fX |", name, slowdownavg, slowdown99);
}
/* if we are not comm_world rank 0 and we have forward it to comm_world rank 0 */
if (localrank == 0 && havedata && config->myrank != 0 ) {
mpi_error(MPI_Send(print_buffer, TBLSIZE, MPI_CHAR, 0, 512, MPI_COMM_WORLD));
} else if (config->myrank == 0 && (localrank != 0 || ! havedata)) {
mpi_error(MPI_Recv(print_buffer, TBLSIZE, MPI_CHAR, MPI_ANY_SOURCE, 512, MPI_COMM_WORLD, MPI_STATUS_IGNORE));
}
if (config->myrank == 0) {
printf("%s\n", print_buffer);
printf("+---------------------------------+----------------------+---------------------+\n");
fflush(stdout);
}
return 0;
}
int print_header(CommConfig_t *config, int type, CommTest_t ntype)
{
int i;
if (config->myrank == 0) {
if (type < 3) printf("\n%s\n",table_outerbar);
if (type == 0) {
#ifdef VERBOSE
printf("| %57.57s%22.22s%57.57s |\n", " ", "Isolated Network Tests", " ");
#else
printf("| %27.27s%22.22s%27.27s |\n", " ", "Isolated Network Tests", " ");
#endif
} else if (type == 1) {
#ifdef VERBOSE
printf("| %55.55s%25.25s%56.56s |\n", " ", "Isolated Congestion Tests", " ");
#else
printf("| %25.25s%25.25s%26.26s |\n", " ", "Isolated Congestion Tests", " ");
#endif
} else if (type == 2) {
int nl=64;
char nname[nl];
for (i = 0; i < nl; i++) {
nname[i] = '\0';
}
switch (ntype) {
case P2P_LATENCY:
snprintf(nname, nl, "RR Two-sided Lat");
break;
case RMA_LATENCY:
snprintf(nname, nl, "RR Get Lat");
break;
case P2P_BANDWIDTH:
snprintf(nname, nl, "RR Two-sided BW");
break;
case RMA_BANDWIDTH:
snprintf(nname, nl, "RR Put BW");
break;
case P2P_BANDWIDTH_NAT:
snprintf(nname, nl, "Nat Two-sided BW");
break;
case P2P_NEIGHBORS:
snprintf(nname, nl, "RR Two-sided BW+Sync");
break;
case ALLREDUCE_LATENCY:
snprintf(nname, nl, "Multiple Allreduce");
break;
case A2A_BANDWIDTH:
snprintf(nname, nl, "Multiple Alltoall");
break;
default:
break;
}
#ifdef VERBOSE
printf("| %28.28s%43.43s (%20s Network Test)%29s |\n", " ", "Network Tests running with Congestion Tests", nname, " ");
#else
printf("| %16.16s%43.43s%17.17s |\n", " ", "Network Tests running with Congestion Tests", " ");
#endif
} else if (type == 3) {
printf("\n+------------------------------------------------------------------------------+\n");
printf("| %9.9s%57.57s%10.10s |\n", " ", "Network Tests running with Congestion Tests - Key Results", " ");
printf("+---------------------------------+--------------------------------------------+\n");
printf("| %31.31s | %42.42s |\n",
"Name", "Congestion Impact Factor");
printf("+---------------------------------+----------------------+---------------------+\n");
printf("| %31.31s | %20.20s | %19.19s |\n",
" ", "Avg", "99%");
printf("+---------------------------------+----------------------+---------------------+\n");
}
if (type < 3) {
printf("%s\n",table_innerbar);
#ifdef VERBOSE
printf("| %31.31s | %12.12s | %12.12s | %12.12s | %12.12s | %12.12s | %12.12s | %12.12s |\n",
"Name", "Min", "Max", "Avg", "Avg(Worst)", "99%", "99.9%", "Units");
#else
printf("| %31.31s | %12.12s | %12.12s | %12.12s |\n",
"Name", "Avg", "99%", "Units");
#endif
printf("%s\n",table_innerbar);
}
fflush(stdout);
}
return 0;
}
/* summarize performance stats */
int summarize_performance(CommConfig_t *config, double *myperf_vals_hires, double *myperf_vals,
int total_vals_hires, int total_vals, int from_min, MPI_Comm comm, CommResults_t *results)
{
int i, j, myrank, nranks;
double hires_min, hires_max, dres;
uint64_t *distribution, myvalid_hires_vals, valid_hires_vals;
mpi_error(MPI_Comm_rank(comm, &myrank));
mpi_error(MPI_Comm_size(comm, &nranks));
/* manage the high resolution data first */
results->ndist_buckets = 100000;
distribution = malloc(sizeof(double) * results->ndist_buckets);
if (distribution == NULL) {
die("Failed to allocate distribution in summarize_performance()\n");
}
for (j = 0; j < results->ndist_buckets; j++) distribution[j] = 0L;
hires_min = 1.0e8;
hires_max = -1.0e8;
for (i = 0; i < total_vals_hires; i++) {
hires_min = (hires_min > myperf_vals_hires[i] && myperf_vals_hires[i] >= 0.) ? myperf_vals_hires[i] : hires_min;
hires_max = (hires_max < myperf_vals_hires[i] && myperf_vals_hires[i] >= 0.) ? myperf_vals_hires[i] : hires_max;
}
mpi_error(MPI_Allreduce(MPI_IN_PLACE, &hires_min, 1, MPI_DOUBLE, MPI_MIN, comm));
mpi_error(MPI_Allreduce(MPI_IN_PLACE, &hires_max, 1, MPI_DOUBLE, MPI_MAX, comm));
myvalid_hires_vals = 0L;
dres = (hires_max - hires_min) / (double)(results->ndist_buckets - 1);
for (i = 0; i < total_vals_hires; i++) {
int bucket = (int)((myperf_vals_hires[i] - hires_min) / dres);
if (bucket >= 0 && bucket < results->ndist_buckets) {
distribution[bucket]++;
myvalid_hires_vals++;
}
}
if (myrank == 0) {
if (results->distribution != NULL) free(results->distribution);
results->distribution = malloc(sizeof(uint64_t) * results->ndist_buckets);
if (results->distribution == NULL) {
die("Failed to allocate results->distribution in summarize_performance()\n");
}
for (j = 0; j < results->ndist_buckets; j++) {
results->distribution[j] = 0L;
}
}
mpi_error(MPI_Reduce(distribution, results->distribution, results->ndist_buckets, MPI_UINT64_T, MPI_SUM, 0, comm));
free(distribution);
mpi_error(MPI_Reduce(&myvalid_hires_vals, &valid_hires_vals, 1, MPI_UINT64_T, MPI_SUM, 0, comm));
if (myrank == 0) {
uint64_t cnt_99 = (uint64_t)(0.99 * (double)valid_hires_vals);
uint64_t cnt_999 = (uint64_t)(0.999 * (double)valid_hires_vals);
int f99 = 0, f999 = 0;
uint64_t cnt = 0L;
if (from_min == 1) {
for (j = 0; j < results->ndist_buckets; j++) {
cnt += results->distribution[j];
if (cnt >= cnt_99 && f99 == 0) {
results->percentile_99 = hires_min + (double)(j+1)*dres;
f99 = 1;
}
if (cnt >= cnt_999 && f999 == 0) {
results->percentile_999 = hires_min + (double)(j+1)*dres;
f999 = 1;
}
}
} else {
for (j = results->ndist_buckets-1; j >=0; j--) {
cnt += results->distribution[j];
if (cnt >= cnt_99 && f99 == 0) {
results->percentile_99 = hires_min + (double)j*dres;
f99 = 1;
}
if (cnt >= cnt_999 && f999 == 0) {
results->percentile_999 = hires_min + (double)j*dres;
f999 = 1;
}
}
}
results->dlow = hires_min;
results->dhi = hires_max;
results->dres = dres;
}
/* now do the data averaged over iterations */
double *minperf_vals, *maxperf_vals, *avgperf_vals;
if (myrank == 0) {
minperf_vals = malloc(sizeof(double) * total_vals);
maxperf_vals = malloc(sizeof(double) * total_vals);
avgperf_vals = malloc(sizeof(double) * total_vals);
if (minperf_vals == NULL || maxperf_vals == NULL || avgperf_vals == NULL) {
die("Failed to allocate global metric arrays in summarize_performance()\n");
}
}
/* generate the cross-rank statistics. handle the case where our own data is not
of use likely because we are a root rank that did nothing. */
double *filt_perf_vals = malloc(sizeof(double) * total_vals);
int *have_valid_val = malloc(sizeof(int) * total_vals);
int *valid_vals = malloc(sizeof(int) * total_vals);
if (filt_perf_vals == NULL || have_valid_val == NULL || valid_vals == NULL) {
die("Failed to allocate metric arrays in summarize_performance()\n");
}
for (i = 0; i < total_vals; i++) have_valid_val[i] = (myperf_vals[i] > 0.) ? 1 : 0;
mpi_error(MPI_Reduce(have_valid_val, valid_vals, total_vals, MPI_INT, MPI_SUM, 0, comm));
for (i = 0; i < total_vals; i++) filt_perf_vals[i] = (myperf_vals[i] > 0.) ? myperf_vals[i] : 1.0e8;
mpi_error(MPI_Reduce(filt_perf_vals, minperf_vals, total_vals, MPI_DOUBLE, MPI_MIN, 0, comm));
for (i = 0; i < total_vals; i++) filt_perf_vals[i] = (myperf_vals[i] > 0.) ? myperf_vals[i] : -1.0e8;
mpi_error(MPI_Reduce(filt_perf_vals, maxperf_vals, total_vals, MPI_DOUBLE, MPI_MAX, 0, comm));
for (i = 0; i < total_vals; i++) filt_perf_vals[i] = (myperf_vals[i] > 0.) ? myperf_vals[i] : 0.;
mpi_error(MPI_Reduce(filt_perf_vals, avgperf_vals, total_vals, MPI_DOUBLE, MPI_SUM, 0, comm));
if (myrank == 0) {
for (i = 0; i < total_vals; i++) {
avgperf_vals[i] = avgperf_vals[i] / (double)valid_vals[i];
}
/* now compute statistics looking across the total measurments */
results->minval = 1.0e8;
results->maxval = -1.0e8;
results->avg = 0.;
results->avgmax = 0.;
results->avgmin = 0.;
for (i = 0; i < total_vals; i++) {
results->minval = (minperf_vals[i] < results->minval) ? minperf_vals[i] : results->minval;
results->maxval = (maxperf_vals[i] > results->maxval) ? maxperf_vals[i] : results->maxval;
results->avg += avgperf_vals[i];
results->avgmax += maxperf_vals[i];
results->avgmin += minperf_vals[i];
}
results->avg = results->avg / total_vals;
results->avgmax = results->avgmax / total_vals;
results->avgmin = results->avgmin / total_vals;
}
free(filt_perf_vals);
free(have_valid_val);
free(valid_vals);
if (myrank == 0) {
free(minperf_vals);
free(maxperf_vals);
free(avgperf_vals);
}
return 0;
}
int create_perf_filename(CommTest_t req_test, CommTest_t other_test, int isbaseline, char *suffix, char **fname)
{
int i, bl=16, ol=64, fl=256;
char bases[bl], othern[ol];
*fname = malloc(sizeof(char) * fl);
if (*fname == NULL) {
die("Failed to allocate fname in create_perf_filename()\n");
}
for (i = 0; i < bl; i++) {
bases[i] = '\0';
}
if (isbaseline) snprintf(bases, bl, "_baseline");
for (i = 0; i < ol; i++) {
othern[i] = '\0';
}
switch (other_test) {
case P2P_LATENCY:
snprintf(othern, ol, "_with_p2p_latency");
break;
case RMA_LATENCY:
snprintf(othern, ol, "_with_get_latency");
break;
case P2P_BANDWIDTH:
snprintf(othern, ol, "_with_p2p_bandwidth");
break;
case P2P_BANDWIDTH_NAT:
snprintf(othern, ol, "_with_p2p_bandwidth_nat");
break;
case RMA_BANDWIDTH:
snprintf(othern, ol, "_with_put_bandwidth");
break;
case P2P_NEIGHBORS:
snprintf(othern, ol, "_with_p2p_neighbors");
break;
case ALLREDUCE_LATENCY:
snprintf(othern, ol, "_with_allreduce_latency");
break;
case A2A_BANDWIDTH:
snprintf(othern, ol, "_with_a2a_bandwidth");
break;
case A2A_CONGESTOR:
snprintf(othern, ol, "_with_a2a_congestor");
break;
case ALLREDUCE_CONGESTOR:
snprintf(othern, ol, "_with_allreduce_congestor");
break;
case P2P_INCAST_CONGESTOR:
snprintf(othern, ol, "_with_p2p_incast_congestor");
break;
case P2P_BCAST_CONGESTOR:
snprintf(othern, ol, "_with_p2p_bcast_congestor");
break;
case RMA_INCAST_CONGESTOR:
snprintf(othern, ol, "_with_put_incast_congestor");
break;
case RMA_BCAST_CONGESTOR:
snprintf(othern, ol, "_with_get_bcast_congestor");
break;
case TEST_CONGESTORS:
snprintf(othern, ol, "_with_congestors");
break;
default:
break;
}
switch (req_test) {
case P2P_LATENCY:
snprintf(*fname, fl, "p2p_latency%s%s.%s", bases, othern, suffix);
break;
case RMA_LATENCY:
snprintf(*fname, fl, "get_latency%s%s.%s", bases, othern, suffix);
break;
case P2P_BANDWIDTH:
snprintf(*fname, fl, "p2p_bandwidth%s%s.%s", bases, othern, suffix);
break;
case P2P_BANDWIDTH_NAT:
snprintf(*fname, fl, "p2p_bandwidth_nat%s%s.%s", bases, othern, suffix);
break;
case RMA_BANDWIDTH:
snprintf(*fname, fl, "put_bandwidth%s%s.%s", bases, othern, suffix);
break;
case P2P_NEIGHBORS:
snprintf(*fname, fl, "p2p_neighbors%s%s.%s", bases, othern, suffix);
break;
case ALLREDUCE_LATENCY:
snprintf(*fname, fl, "allreduce_latency%s%s.%s", bases, othern, suffix);
break;
case A2A_BANDWIDTH:
snprintf(*fname, fl, "a2a_bandwidth%s%s.%s", bases, othern, suffix);
break;
case A2A_CONGESTOR:
snprintf(*fname, fl, "a2a_congestor%s%s.%s", bases, othern, suffix);
break;
case ALLREDUCE_CONGESTOR:
snprintf(*fname, fl, "allreduce_congestor%s%s.%s", bases, othern, suffix);
break;
case P2P_INCAST_CONGESTOR:
snprintf(*fname, fl, "p2p_incast_congestor%s%s.%s", bases, othern, suffix);
break;
case P2P_BCAST_CONGESTOR:
snprintf(*fname, fl, "p2p_bcast_congestor%s%s.%s", bases, othern, suffix);
break;
case RMA_INCAST_CONGESTOR:
snprintf(*fname, fl, "put_incast_congestor%s%s.%s", bases, othern, suffix);
break;
case RMA_BCAST_CONGESTOR:
snprintf(*fname, fl, "get_bcast_congestor%s%s.%s", bases, othern, suffix);
break;
default:
break;
}
return 0;
}
/* create a string record of the performance a rank sees on a test */
int summarize_pairs_performance(CommConfig_t *config, MPI_Comm comm, char *lnode, char *rnode, double *myperf_vals,
int nsamps, int m, int r, CommTest_t req_test, CommTest_t other_test)
{
double minv, maxv, avgv;
int i, myrank, nranks, tl=64, pl=256;
char tname[tl], tunits[tl], stime[tl], perf_str[pl];
char *all_perf_strs;
struct timespec timestmp;
#ifndef VERBOSE
return 0;
#else
mpi_error(MPI_Comm_size(comm, &nranks));
mpi_error(MPI_Comm_rank(comm, &myrank));
if (myrank == 0) {
all_perf_strs = malloc(sizeof(char) * pl * nranks);
if (all_perf_strs == NULL) {
die("Root rank failed to allocate all_perf_strs in random_ring()\n");
}
}
for (i = 0; i < tl; i++) {
tname[i] = '\0';
tunits[i] = '\0';
}
for (i = 0; i < pl; i++) {
perf_str[i] = '\0';
}
switch (req_test) {
case P2P_LATENCY:
snprintf(tname, tl, "p2p_latency");
snprintf(tunits, tl, "usec");
break;
case RMA_LATENCY:
snprintf(tname, tl, "get_latency");
snprintf(tunits, tl, "usec");
break;
case P2P_BANDWIDTH:
snprintf(tname, tl, "p2p_bandwidth");
snprintf(tunits, tl, "MiB/s");
break;
case P2P_BANDWIDTH_NAT:
snprintf(tname, tl, "p2p_bandwidth_nat");
snprintf(tunits, tl, "MiB/s");
break;
case RMA_BANDWIDTH:
snprintf(tname, tl, "put_bandwidth");
snprintf(tunits, tl, "MiB/s");
break;
case P2P_NEIGHBORS:
snprintf(tname, tl, "p2p_neighbors");
snprintf(tunits, tl, "MiB/s");
break;
case ALLREDUCE_LATENCY:
snprintf(tname, tl, "allreduce_latency");
snprintf(tunits, tl, "usec");
break;
case A2A_BANDWIDTH:
snprintf(tname, tl, "a2a_bandwidth");
snprintf(tunits, tl, "MiB/s");
break;
case A2A_CONGESTOR:
snprintf(tname, tl, "a2a_congestor");
snprintf(tunits, tl, "MiB/s");
break;
case P2P_INCAST_CONGESTOR:
snprintf(tname, tl, "p2p_incast_congestor");
snprintf(tunits, tl, "MiB/s");
break;
case P2P_BCAST_CONGESTOR:
snprintf(tname, tl, "p2p_bcast_congestor");
snprintf(tunits, tl, "MiB/s");
break;
case RMA_INCAST_CONGESTOR:
snprintf(tname, tl, "put_incast_congestor");
snprintf(tunits, tl, "MiB/s");
break;
case RMA_BCAST_CONGESTOR:
snprintf(tname, tl, "get_bcast_congestor");
snprintf(tunits, tl, "MiB/s");
break;
default:
break;
}
minv = 1e8;
maxv = -1e8;
avgv = 0.0;
for (i = 0; i < nsamps; i++) {
minv = (myperf_vals[i] < minv) ? myperf_vals[i] : minv;
maxv = (myperf_vals[i] > maxv) ? myperf_vals[i] : maxv;
avgv += myperf_vals[i];
}
avgv /= nsamps;
/* string is
datetime reporting_global_rank reporting_local_rank reporting_node left_remote_node right_remote_node meas_idx rand_idx test_name units #samps min max avg
*/
clock_gettime(CLOCK_REALTIME, ×tmp);
snprintf(stime, tl, "%19.4f", 1e-9 * (1000000000L * timestmp.tv_sec + timestmp.tv_nsec));
snprintf(perf_str, pl, "%20.20s %8i %8i %20.20s %20.20s %20.20s %6i %6i %10s %10s %8i %20.5f %20.5f %20.5f\n",
stime, config->myrank, config->mynode_rank, config->mynode->host_name, lnode, rnode, m, r, tname, tunits, nsamps, minv, maxv, avgv);
/* gather all pairs perf results to global_comm rank 0 and write them to a file */
mpi_error(MPI_Gather(perf_str, pl, MPI_CHAR, all_perf_strs, pl, MPI_CHAR, 0, comm));
if (myrank == 0) {
FILE *fp;
char *fname;
int isbaseline = (other_test == TEST_NULL) ? 1 : 0;
create_perf_filename(req_test, other_test, isbaseline, "rec", &fname);
fp = fopen(fname, "a+");
for (i = 0; i < nranks; i++) {
fprintf(fp, "%256.256s\n", &all_perf_strs[i*pl]);
}
fclose(fp);
free(fname);
}
if (myrank == 0) {
free(all_perf_strs);
}
return 0;
#endif
}
/* create a file with the distribution of hires measurements */
int write_distribution(CommTest_t req_test, CommTest_t other_test, int isbaseline,
CommResults_t * results, char * tname, char * tunits)
{
int i;
FILE *fp;
char *fname;
#ifndef VERBOSE
return 0;
#else
create_perf_filename(req_test, other_test, isbaseline, "dat", &fname);
fp = fopen(fname, "w+");
fprintf(fp, "%22.22s%20.20s\n", " ", tname);
fprintf(fp, "%20.20s %20.20s %20.20s\n", "Bin", tunits, "count");
for (i = 0; i < results->ndist_buckets; i++) {
fprintf(fp, "%20i %20.5f %20lu\n", i, (results->dlow+i*results->dres), results->distribution[i]);
}
fclose(fp);
free(fname);
return 0;
#endif
}