function main()
{
$noNodes = 0;
$noStreams = 0;
// the following is defined in the original C version but never used.
$arrivals = 16.0 / 3600;
/* 16 applications per hour */
/* Branching probabilities and weights */
$p12 = 0.3;
$p13 = 0.7;
$p23 = 0.2;
$p32 = 0.1;
$w3 = ($p13 + $p23 * $p12) / (1 - $p23 * $p32);
$w2 = $p12 + $p32 * $w3;
/* Initialize and solve the model */
PDQ_Init("Passport Office");
$noStreams = PDQ_CreateOpen("Applicant", 0.00427);
$noNodes = PDQ_CreateNode("Window1", CEN, FCFS);
$noNodes = PDQ_CreateNode("Window2", CEN, FCFS);
$noNodes = PDQ_CreateNode("Window3", CEN, FCFS);
$noNodes = PDQ_CreateNode("Window4", CEN, FCFS);
PDQ_SetDemand("Window1", "Applicant", 20.0);
PDQ_SetDemand("Window2", "Applicant", 600.0 * $w2);
PDQ_SetDemand("Window3", "Applicant", 300.0 * $w3);
PDQ_SetDemand("Window4", "Applicant", 60.0);
PDQ_Solve(CANON);
PDQ_Report();
}
function main()
{
$noNodes = 0;
$noStreams = 0;
$arrivals_per_second = 0.1;
/* Initialize and solve the model */
PDQ_Init("Simple Series Circuit");
$noStreams = PDQ_CreateOpen("Work", $arrivals_per_second);
$noNodes = PDQ_CreateNode("Center1", CEN, FCFS);
$noNodes = PDQ_CreateNode("Center2", CEN, FCFS);
$noNodes = PDQ_CreateNode("Center3", CEN, FCFS);
PDQ_SetDemand("Center1", "Work", 1.0);
PDQ_SetDemand("Center2", "Work", 2.0);
PDQ_SetDemand("Center3", "Work", 3.0);
PDQ_Solve(CANON);
PDQ_Report();
}
function main($argc, $argv)
{
global $nodes, $streams;
//---- Model specific variables -----
$rx_prob = 0.3;
$inter_arriv_rate = 0.5;
$service_time = 0.75;
$mean_visits = 1.0 / (1.0 - $rx_prob);
//----- Initialize the model -----
// Give model a name */
PDQ_Init("Open Feedback");
// Define the queueing center
$nodes = PDQ_CreateNode("channel", CEN, FCFS);
// Define the workload and circuit type
$streams = PDQ_CreateOpen("message", $inter_arriv_rate);
// Define service demand due to workload on the queueing center
PDQ_SetVisits("channel", "message", $mean_visits, $service_time);
//----- Solve the model -----
// Must use the CANONical method for an open circuit
PDQ_Solve(CANON);
// Generate a report
PDQ_Report();
}
function main($argc, $argv)
{
//----- Model specific variables -----
global $nodes, $streams;
$arrivRate = 0.75;
$service_time = 1.0;
//----- Initialize the model & Give it a name ------
PDQ_Init("OpenCenter");
//----- Change unit labels -----
PDQ_SetWUnit("Customers");
PDQ_SetTUnit("Seconds");
//----- Define the queueing center -----
$nodes = PDQ_CreateNode("server", CEN, FCFS);
//----- Define the workload and circuit type -----
$streams = PDQ_CreateOpen("work", $arrivRate);
//----- Define service demand due to workload on the queueing center ------
PDQ_SetDemand("server", "work", $service_time);
//----- Solve the model -----
// Must use the CANONical method for an open circuit
PDQ_Solve(CANON);
//----- Generate a report -----
PDQ_Report();
}
function main()
{
// Name of this model ...
$scenario = "C/S Upgrade2";
global $job, $node;
$noNodes = 0;
$noStreams = 0;
$txCD = "";
$txRQ = "";
$txSU = "";
$dumCD = "";
$dumRQ = "";
$dumSU = "";
$X = 0.0;
$ulan = 0.0;
$ufs = 0.0;
$ugw = 0.0;
$umf = 0.0;
$work = 0;
$dev = 0;
$i = 0;
$j = 0;
$demand = array(array());
// double [MAXPROC][MAXDEV]
$util = array();
// double [MAXDEV]
$udsk = array();
// double [MAXDEV]
$upc = array();
// double [MAXDEV]
$udasd = array();
// double [MAXDEV];
for ($i = 0; $i < MAXDEV; $i++) {
$util[$i] = 0.0;
$udsk[$i] = 0.0;
$upc[$i] = 0.0;
$udasd[$i] = 0.0;
for ($j = 0; $j < MAXPROC; $j++) {
$demand[$j][$i] = 0.0;
}
}
$PCarray = array();
$FDarray = array();
$MDarray = array();
// Allocate PCarray
for ($i = 0; $i < 2; $i++) {
$PCarray[$i] = new DEVARRAY_TYPE();
}
// Allocate FDarray and MDarray
for ($i = 0; $i < 10; $i++) {
$FDarray[$i] = new DEVARRAY_TYPE();
$MDarray[$i] = new DEVARRAY_TYPE();
}
$PCarray[0]->id = 0;
$PCarray[0]->label = "PCreal";
$PCarray[1]->id = 50;
$PCarray[1]->label = "PCagg";
for ($i = 0; $i < FS_DISKS; $i++) {
$FDarray[$i]->id = FDA + $i;
$FDarray[$i]->label = sprintf("FD%d", $i);
}
for ($i = 0; $i < MF_DISKS; $i++) {
$MDarray[$i]->id = MDA + $i;
$MDarray[$i]->label = sprintf("MD%d", $i);
}
/*
* CPU service times are calculated from MIPS Instruction counts in
* tables presented in original 1993 CMG paper.
*/
$demand[CD_REQ][PC] = 200 * K / PC_MIPS;
$demand[CD_RPY][PC] = 100 * K / PC_MIPS;
$demand[RQ_REQ][PC] = 150 * K / PC_MIPS;
$demand[RQ_RPY][PC] = 200 * K / PC_MIPS;
$demand[SU_REQ][PC] = 300 * K / PC_MIPS;
$demand[SU_RPY][PC] = 300 * K / PC_MIPS;
$demand[REQ_CD][FS] = 50 * K / FS_MIPS;
$demand[REQ_RQ][FS] = 70 * K / FS_MIPS;
$demand[REQ_SU][FS] = 10 * K / FS_MIPS;
$demand[CD_MSG][FS] = 35 * K / FS_MIPS;
$demand[RQ_MSG][FS] = 35 * K / FS_MIPS;
$demand[SU_MSG][FS] = 35 * K / FS_MIPS;
$demand[GT_SND][GW] = 50 * K / GW_MIPS;
$demand[GT_RCV][GW] = 50 * K / GW_MIPS;
$demand[MF_CD][MF] = 50 * K / MF_MIPS;
$demand[MF_RQ][MF] = 150 * K / MF_MIPS;
$demand[MF_SU][MF] = 20 * K / MF_MIPS;
// packets generated at each of the following sources ...
$demand[LAN_TX][PC] = 2 * K * TR_FACT / TR_MBPS;
$demand[LAN_TX][FS] = 2 * K * TR_FACT / TR_MBPS;
$demand[LAN_TX][GW] = 2 * K * TR_FACT / TR_MBPS;
/* File server Disk I/Os = #accesses x caching / (max IOs/Sec) */
for ($i = 0; $i < FS_DISKS; $i++) {
$demand[REQ_CD][$FDarray[$i]->id] = 1.0 * 0.5 / 128.9 / FS_DISKS;
$demand[REQ_RQ][$FDarray[$i]->id] = 1.5 * 0.5 / 128.9 / FS_DISKS;
$demand[REQ_SU][$FDarray[$i]->id] = 0.2 * 0.5 / 128.9 / FS_DISKS;
$demand[CD_MSG][$FDarray[$i]->id] = 1.0 * 0.5 / 128.9 / FS_DISKS;
$demand[RQ_MSG][$FDarray[$i]->id] = 1.5 * 0.5 / 128.9 / FS_DISKS;
$demand[SU_MSG][$FDarray[$i]->id] = 0.5 * 0.5 / 128.9 / FS_DISKS;
}
/* Mainframe DASD I/Os = (#accesses / (max IOs/Sec)) / #disks */
for ($i = 0; $i < MF_DISKS; $i++) {
$demand[MF_CD][$MDarray[$i]->id] = 2.0 / 60.24 / MF_DISKS;
$demand[MF_RQ][$MDarray[$i]->id] = 4.0 / 60.24 / MF_DISKS;
$demand[MF_SU][$MDarray[$i]->id] = 1.0 / 60.24 / MF_DISKS;
}
// Start building the PDQ model ...
PDQ_Init($scenario);
// Define physical resources as queues ...
$noNodes = PDQ_CreateNode($PCarray[0]->label, CEN, FCFS);
//$noNodes = PDQ_CreateNode(PCarray[1]->label, CEN, FCFS);
$noNodes = PDQ_CreateNode("FS", CEN, FCFS);
$noNodes = PDQ_CreateNode("GW", CEN, FCFS);
$noNodes = PDQ_CreateNode("MF", CEN, FCFS);
for ($i = 0; $i < FS_DISKS; $i++) {
$noNodes = PDQ_CreateNode($FDarray[$i]->label, CEN, FCFS);
}
for ($i = 0; $i < MF_DISKS; $i++) {
$noNodes = PDQ_CreateNode($MDarray[$i]->label, CEN, FCFS);
}
$noNodes = PDQ_CreateNode("TR", CEN, FCFS);
/*
* NOTE: Althought the Token Ring LAN is a passive device,
* it is treated as a separate node in order to agree to the results
* presented in the original CMG'93 paper.
*/
if ($noNodes > MAXDEV) {
printf("Number of noNodes %d exceeds MAXDEV = %d", $noNodes, MAXDEV);
}
// Assign transaction names ...
$txCD = "CatDsply";
$txRQ = "RemQuote";
$txSU = "StatusUp";
$dumCD = "CDdummy ";
$dumRQ = "RQdummy ";
$dumSU = "SUdummy ";
// Define an OPEN circuit workloads ...
$noStreams = PDQ_CreateOpen($txCD, 4.0 / 60.0);
$noStreams = PDQ_CreateOpen($txRQ, 8.0 / 60.0);
$noStreams = PDQ_CreateOpen($txSU, 1.0 / 60.0);
$noStreams = PDQ_CreateOpen($dumCD, (USERS - 1) * 4.0 / 60.0);
$noStreams = PDQ_CreateOpen($dumRQ, (USERS - 1) * 8.0 / 60.0);
$noStreams = PDQ_CreateOpen($dumSU, (USERS - 1) * 1.0 / 60.0);
// Define the service demands on each physical resource
// CD request + reply chain from workflow diagram
PDQ_SetDemand($PCarray[0]->label, $txCD, $demand[CD_REQ][PC] + 5 * $demand[CD_RPY][PC]);
// PDQ_SetDemand($PCarray[1]->label, $dumCD,($demand[CD_REQ][PC] + (5 * $demand[CD_RPY][PC])) / (USERS - 1));
PDQ_SetDemand("FS", $txCD, $demand[REQ_CD][FS] + 5 * $demand[CD_MSG][FS]);
PDQ_SetDemand("FS", $dumCD, $demand[REQ_CD][FS] + 5 * $demand[CD_MSG][FS]);
for ($i = 0; $i < FS_DISKS; $i++) {
PDQ_SetDemand($FDarray[$i]->label, $txCD, $demand[REQ_CD][$FDarray[$i]->id] + 5 * $demand[CD_MSG][$FDarray[$i]->id]);
PDQ_SetDemand($FDarray[$i]->label, $dumCD, $demand[REQ_CD][$FDarray[$i]->id] + 5 * $demand[CD_MSG][$FDarray[$i]->id]);
}
PDQ_SetDemand("GW", $txCD, $demand[GT_SND][GW] + 5 * $demand[GT_RCV][GW]);
PDQ_SetDemand("GW", $dumCD, $demand[GT_SND][GW] + 5 * $demand[GT_RCV][GW]);
PDQ_SetDemand("MF", $txCD, $demand[MF_CD][MF]);
PDQ_SetDemand("MF", $dumCD, $demand[MF_CD][MF]);
for ($i = 0; $i < MF_DISKS; $i++) {
PDQ_SetDemand($MDarray[$i]->label, $txCD, $demand[MF_CD][$MDarray[$i]->id]);
PDQ_SetDemand($MDarray[$i]->label, $dumCD, $demand[MF_CD][$MDarray[$i]->id]);
}
/*
* NOTE: Synchronous process execution causes data related to the the CD
* transaction to cross the LAN 12 times as depicted in the following
* parameterization of PDQ_SetDemand.
*/
PDQ_SetDemand("TR", $txCD, 1 * $demand[LAN_TX][PC] + 1 * $demand[LAN_TX][FS] + 5 * $demand[LAN_TX][GW] + 5 * $demand[LAN_TX][FS]);
PDQ_SetDemand("TR", $dumCD, 1 * $demand[LAN_TX][PC] + 1 * $demand[LAN_TX][FS] + 5 * $demand[LAN_TX][GW] + 5 * $demand[LAN_TX][FS]);
// RQ request + reply chain ...
PDQ_SetDemand($PCarray[0]->label, $txRQ, $demand[RQ_REQ][PC] + 3 * $demand[RQ_RPY][PC]);
// PDQ_SetDemand($PCarray[1]->label, $dumRQ,($demand[RQ_REQ][PC] + (3 * $demand[RQ_RPY][PC])) / (USERS - 1));
PDQ_SetDemand("FS", $txRQ, $demand[REQ_RQ][FS] + 3 * $demand[RQ_MSG][FS]);
PDQ_SetDemand("FS", $dumRQ, $demand[REQ_RQ][FS] + 3 * $demand[RQ_MSG][FS]);
for ($i = 0; $i < FS_DISKS; $i++) {
PDQ_SetDemand($FDarray[$i]->label, $txRQ, $demand[REQ_RQ][$FDarray[$i]->id] + 3 * $demand[RQ_MSG][$FDarray[$i]->id]);
PDQ_SetDemand($FDarray[$i]->label, $dumRQ, $demand[REQ_RQ][$FDarray[$i]->id] + 3 * $demand[RQ_MSG][$FDarray[$i]->id]);
}
PDQ_SetDemand("GW", $txRQ, $demand[GT_SND][GW] + 3 * $demand[GT_RCV][GW]);
PDQ_SetDemand("GW", $dumRQ, $demand[GT_SND][GW] + 3 * $demand[GT_RCV][GW]);
PDQ_SetDemand("MF", $txRQ, $demand[MF_RQ][MF]);
PDQ_SetDemand("MF", $dumRQ, $demand[MF_RQ][MF]);
for ($i = 0; $i < MF_DISKS; $i++) {
PDQ_SetDemand($MDarray[$i]->label, $txRQ, $demand[MF_RQ][$MDarray[$i]->id]);
PDQ_SetDemand($MDarray[$i]->label, $dumRQ, $demand[MF_RQ][$MDarray[$i]->id]);
}
PDQ_SetDemand("TR", $txRQ, 1 * $demand[LAN_TX][PC] + 1 * $demand[LAN_TX][FS] + 3 * $demand[LAN_TX][GW] + 3 * $demand[LAN_TX][FS]);
PDQ_SetDemand("TR", $dumRQ, 1 * $demand[LAN_TX][PC] + 1 * $demand[LAN_TX][FS] + 3 * $demand[LAN_TX][GW] + 3 * $demand[LAN_TX][FS]);
// SU request + reply chain ...
PDQ_SetDemand($PCarray[0]->label, $txSU, $demand[SU_REQ][PC] + $demand[SU_RPY][PC]);
// PDQ_SetDemand($PCarray[1]->label, $dumSU,(($demand[SU_REQ][PC] + $demand[SU_RPY][PC])) / (USERS - 1));
PDQ_SetDemand("TR", $txSU, $demand[LAN_TX][PC]);
PDQ_SetDemand("TR", $dumSU, $demand[LAN_TX][PC]);
PDQ_SetDemand("FS", $txSU, $demand[REQ_SU][FS] + $demand[SU_MSG][FS]);
PDQ_SetDemand("FS", $dumSU, $demand[REQ_SU][FS] + $demand[SU_MSG][FS]);
for ($i = 0; $i < FS_DISKS; $i++) {
PDQ_SetDemand($FDarray[$i]->label, $txSU, $demand[REQ_SU][$FDarray[$i]->id] + $demand[SU_MSG][$FDarray[$i]->id]);
PDQ_SetDemand($FDarray[$i]->label, $dumSU, $demand[REQ_SU][$FDarray[$i]->id] + $demand[SU_MSG][$FDarray[$i]->id]);
}
PDQ_SetDemand("TR", $txSU, $demand[LAN_TX][FS]);
PDQ_SetDemand("TR", $dumSU, $demand[LAN_TX][FS]);
PDQ_SetDemand("GW", $txSU, $demand[GT_SND][GW] + $demand[GT_RCV][GW]);
PDQ_SetDemand("GW", $dumSU, $demand[GT_SND][GW] + $demand[GT_RCV][GW]);
PDQ_SetDemand("MF", $txSU, $demand[MF_SU][MF]);
PDQ_SetDemand("MF", $dumSU, $demand[MF_SU][MF]);
for ($i = 0; $i < MF_DISKS; $i++) {
PDQ_SetDemand($MDarray[$i]->label, $txSU, $demand[MF_SU][$MDarray[$i]->id]);
PDQ_SetDemand($MDarray[$i]->label, $dumSU, $demand[MF_SU][$MDarray[$i]->id]);
}
PDQ_SetDemand("TR", $txSU, 1 * $demand[LAN_TX][PC] + 1 * $demand[LAN_TX][FS] + 1 * $demand[LAN_TX][GW] + 1 * $demand[LAN_TX][FS]);
PDQ_SetDemand("TR", $dumSU, 1 * $demand[LAN_TX][PC] + 1 * $demand[LAN_TX][FS] + 1 * $demand[LAN_TX][GW] + 1 * $demand[LAN_TX][FS]);
PDQ_Solve(CANON);
PDQ_Report();
// Break out Tx response times and device utilizations ...
printf("*** PDQ Breakout \"%s\" (%d clients) ***\n\n", $scenario, USERS);
for ($dev = 0; $dev < $noNodes; $dev++) {
$util[$dev] = 0.0;
/* reset array */
for ($work = 0; $work < $noStreams; $work++) {
$util[$dev] += 100 * PDQ_GetUtilization($node[$dev]->devname, $job[$work]->trans->name, TRANS);
}
}
printf("Transaction \tLatency(Secs)\n");
printf("----------- \t-----------\n");
for ($work = 0; $work < $noStreams; $work++) {
printf("%s\t%7.4f\n", $job[$work]->trans->name, $job[$work]->trans->sys->response);
}
printf("\n\n");
for ($dev = 0; $dev < $noNodes; $dev++) {
// for ($i = 0; $i < USERS; $i++)
for ($i = 0; $i < 2; $i++) {
if ($node[$dev]->devname == $PCarray[$i]->label) {
$upc[$i] += $util[$dev];
}
// SZ NOTE: In the original C version you use upc but you have never initialized it!!
}
if ($node[$dev]->devname == "GW") {
$ugw += $util[$dev];
}
if ($node[$dev]->devname == "FS") {
$ufs += $util[$dev];
}
for ($i = 0; $i < FS_DISKS; $i++) {
if ($node[$dev]->devname == $FDarray[$i]->label) {
$udsk[$i] += $util[$dev];
}
// SZ NOTE: In the original C version you use udsk but you have never initialized it!!
}
if ($node[$dev]->devname == "MF") {
$umf += $util[$dev];
}
for ($i = 0; $i < MF_DISKS; $i++) {
if ($node[$dev]->devname == $MDarray[$i]->label) {
$udasd[$i] += $util[$dev];
}
// SZ NOTE: In the original C version you use udasd but you have never initialized it!!
}
if ($node[$dev]->devname == "TR") {
$ulan += $util[$dev];
}
}
printf("Node \t%% Utilization\n");
printf("---- \t--------------\n");
printf("%s\t%7.4f\n", "Token Ring ", $ulan);
printf("%s\t%7.4f\n", "Desktop PC ", $upc[0]);
printf("%s\t%7.4f\n", "FileServer ", $ufs);
for ($i = 0; $i < FS_DISKS; $i++) {
printf("%s%d\t%7.4f\n", "FS Disk", $FDarray[$i]->id, $udsk[$i]);
}
printf("%s\t%7.4f\n", "Gateway SNA", $ugw);
printf("%s\t%7.4f\n", "Mainframe ", $umf);
for ($i = 0; $i < MF_DISKS; $i++) {
printf("%s%d\t%7.4f\n", "MFrame DASD", $MDarray[$i]->id, $udasd[$i]);
}
}