Context Navigation

source: soft/giet_vm/applications/classif/classif.c @ 787

Last change on this file since 787 was 720, checked in by alain, 9 years ago
Adapt the router application to the POSIX API.
File size: 26.1 KB

Line
1	///////////////////////////////////////////////////////////////////////////////////////
2	// File : classif.c
3	// Date : november 2014
4	// author : Alain Greiner
5	///////////////////////////////////////////////////////////////////////////////////////
6	// This multi-threaded application takes a stream of Gigabit Ethernet packets,
7	// and makes packet analysis and classification, based on the source MAC address.
8	// It uses the NIC peripheral, and the distributed kernel chbufs accessed by the CMA
9	// component to receive and send packets on the Gigabit Ethernet port.
10	//
11	// It can run on architectures containing up to 16 * 16 clusters,
12	// and from 3 to 8 processors per cluster.
13	//
14	// It requires one shared TTY terminal.
15	//
16	// This application is described as a TCG (Thread and Communication Graph)
17	// containing (N+2) threads per cluster.
18	// - one "load" thread
19	// - one "store" thread
20	// - N "analyse" threads
21	// The containers are distributed (N+2 containers per cluster):
22	// - one RX container (part of the kernel rx_chbuf), in the kernel heap.
23	// - one TX container (part of the kernel tx-chbuf), in the kernel heap.
24	// - N working containers (one per analysis thread), in the user heap.
25	// In each cluster, the "load", analysis" and "store" threads communicates through
26	// three local MWMR fifos:
27	// - fifo_l2a : tranfer a full container from "load" to "analyse" thread.
28	// - fifo_a2s : transfer a full container from "analyse" to "store" thread.
29	// - fifo_s2l : transfer an empty container from "store" to "load" thread.
30	// For each fifo, one item is a 32 bits word defining the index of an
31	// available working container.
32	// The pointers on the working containers, and the pointers on the MWMR fifos
33	// are global arrays stored in cluster[0][0].
34	//
35	// The main thread exit after global initialisation, and launching the other threads:
36	// It does not use the pthread_join() construct. It is executed on P[0,0,1],
37	// toavoid overload on P[0,0,0].
38	//
39	// Initialisation is made in two steps:
40	//
41	// 1) The global, shared, variables are initialised by the main thread:
42	// - shared TTY
43	// - distributed heap (one heap per cluster)
44	// - distributed rx_barrier (between all "load" threads)
45	// - distributed tx_barrier (between all "store" threads)
46	// - RX kernel chbufs (used by "load" threads)
47	// - TX kernel chbufs (used by "store" threads)
48	// Then the main thread exit, after launching the "load, "store", and "analyse"
49	// threads in all clusters.
50	//
51	// 2) Each "load" thread allocates containers[x][y][n] from local heap,
52	// and register containers pointers in the local stack.
53	// Each "load" thread allocates data buffers & mwmr fifo descriptors
54	// from local heap, and register pointers in global arrays.
55	// Each "load" thread initialises the containers as empty in fifo_s2l.
56	// Then each "load" thread signals mwmr fifos initialisation completion
57	// to other threads in same cluster, using the local_sync[x][y] variables.
58	//
59	// When initialisation is completed, all threads are running in parallel:
60	//
61	// 1) The "load" thread get an empty working container from the fifo_s2l,
62	// transfer one container from the kernel rx_chbuf to this user container,
63	// and transfer ownership of this container to one "analysis" thread by writing
64	// into the fifo_l2a.
65	// 2) The "analyse" thread get one working container from the fifo_l2a, analyse
66	// each packet header, compute the packet type (depending on the SRC MAC address),
67	// increment the correspondint classification counter, and transpose the SRC
68	// and the DST MAC addresses fot TX tranmission.
69	// 3) The "store" thread transfer get a full working container from the fifo_a2s,
70	// transfer this user container content to the the kernel tx_chbuf,
71	// and transfer ownership of this empty container to the "load" thread by writing
72	// into the fifo_s2l.
73	//
74	// Instrumentation results display is done by the "store" thread in cluster[0][0]
75	// when all "store" threads completed the number of clusters specified by the
76	// CONTAINERS_MAX parameter.
77	///////////////////////////////////////////////////////////////////////////////////////
78
79	#include "stdio.h"
80	#include "user_barrier.h"
81	#include "malloc.h"
82	#include "user_lock.h"
83	#include "mwmr_channel.h"
84
85	#define X_SIZE_MAX 16
86	#define Y_SIZE_MAX 16
87	#define NPROCS_MAX 8
88	#define CONTAINERS_MAX 5000
89	#define VERBOSE_ANALYSE 0
90
91	// macro to use a shared TTY
92	#define printf(...); { lock_acquire( &tty_lock ); \
93	giet_tty_printf(__VA_ARGS__); \
94	lock_release( &tty_lock ); }
95
96
97	///////////////////////////////////////////////////////////////////////////////////////
98	// Global variables
99	// The MWMR channels (descriptors and buffers), as well as the working containers
100	// used by the "analysis" threads are distributed in clusters.
101	// But the pointers on these distributed structures are stored in cluster[0][0].
102	///////////////////////////////////////////////////////////////////////////////////////
103
104	// pointers on distributed containers
105	unsigned int* container[X_SIZE_MAX][Y_SIZE_MAX][NPROCS_MAX-2];
106
107	// pointers on distributed mwmr fifos containing container descriptors
108	mwmr_channel_t* mwmr_l2a[X_SIZE_MAX][Y_SIZE_MAX];
109	mwmr_channel_t* mwmr_a2s[X_SIZE_MAX][Y_SIZE_MAX];
110	mwmr_channel_t* mwmr_s2l[X_SIZE_MAX][Y_SIZE_MAX];
111
112	// local synchros signaling local MWMR fifos initialisation completion
113	volatile unsigned int local_sync[X_SIZE_MAX][Y_SIZE_MAX];
114
115	// lock protecting shared TTY
116	user_lock_t tty_lock;
117
118	// distributed barrier between "load" threads
119	giet_sqt_barrier_t rx_barrier;
120
121	// distributed barrier between "store" threads
122	giet_sqt_barrier_t tx_barrier;
123
124	// instrumentation counters
125	unsigned int counter[16];
126
127	// threads arguments array
128	unsigned int thread_arg[16][16][4];
129
130	////////////////////////////////////////////////////////////
131	__attribute__ ((constructor)) void load( unsigned int* arg )
132	////////////////////////////////////////////////////////////
133	{
134	// get plat-form parameters
135	unsigned int x_size; // number of clusters in a row
136	unsigned int y_size; // number of clusters in a column
137	unsigned int nprocs; // number of processors per cluster
138	giet_procs_number( &x_size , &y_size , &nprocs );
139
140	// each "load" thread get processor identifiers
141	unsigned int x;
142	unsigned int y;
143	unsigned int p;
144	giet_proc_xyp( &x, &y, &p );
145
146	// each "load" thread allocates containers[x][y][n] (from local heap)
147	// and register pointers in the local stack
148	unsigned int n;
149	unsigned int* cont[NPROCS_MAX-2];
150
151	for ( n = 0 ; n < (nprocs - 2) ; n++ )
152	{
153	container[x][y][n] = malloc( 4096 );
154	cont[n] = container[x][y][n];
155	}
156
157	// each "load" thread allocates data buffers for mwmr fifos (from local heap)
158	unsigned int* data_l2a = malloc( (nprocs - 2)<<2 );
159	unsigned int* data_a2s = malloc( (nprocs - 2)<<2 );
160	unsigned int* data_s2l = malloc( (nprocs - 2)<<2 );
161
162	// each "load" thread allocates mwmr fifos descriptors (from local heap)
163	mwmr_l2a[x][y] = malloc( sizeof(mwmr_channel_t) );
164	mwmr_a2s[x][y] = malloc( sizeof(mwmr_channel_t) );
165	mwmr_s2l[x][y] = malloc( sizeof(mwmr_channel_t) );
166
167	// each "load" thread registers local pointers on mwmr fifos in local stack
168	mwmr_channel_t* fifo_l2a = mwmr_l2a[x][y];
169	mwmr_channel_t* fifo_a2s = mwmr_a2s[x][y];
170	mwmr_channel_t* fifo_s2l = mwmr_s2l[x][y];
171
172	// each "load" thread initialises local mwmr fifos descriptors
173	// ( width = 4 bytes / depth = number of analysis threads )
174	mwmr_init( fifo_l2a , data_l2a , 1 , (nprocs - 2) );
175	mwmr_init( fifo_a2s , data_a2s , 1 , (nprocs - 2) );
176	mwmr_init( fifo_s2l , data_s2l , 1 , (nprocs - 2) );
177
178
179	// each "load" thread initialises local containers as empty in fifo_s2l
180	for ( n = 0 ; n < (nprocs - 2) ; n++ ) mwmr_write( fifo_s2l , &n , 1 );
181
182	// each "load" thread signals mwmr fifos initialisation completion
183	// to other threads in same cluster.
184	local_sync[x][y] = 1;
185
186	// only "load" thread[0][0] displays status
187	if ( (x==0) && (y==0) )
188	{
189	printf("\n[CLASSIF] load on P[%d,%d,%d] enters main loop at cycle %d\n"
190	" &mwmr_l2a = %x / &data_l2a = %x\n"
191	" &mwmr_a2s = %x / &data_a2s = %x\n"
192	" &mwmr_s2l = %x / &data_s2l = %x\n"
193	" &cont[0] = %x\n"
194	" x_size = %d / y_size = %d / nprocs = %d\n",
195	x , y , p , giet_proctime(),
196	(unsigned int)fifo_l2a, (unsigned int)data_l2a,
197	(unsigned int)fifo_a2s, (unsigned int)data_a2s,
198	(unsigned int)fifo_s2l, (unsigned int)data_s2l,
199	(unsigned int)cont[0],
200	x_size, y_size, nprocs );
201	}
202
203	/////////////////////////////////////////////////////////////
204	// "load" thread enters the main loop (on containers)
205	unsigned int count = 0; // loaded containers count
206	unsigned int index; // available container index
207	unsigned int* temp; // pointer on available container
208
209	while ( count < CONTAINERS_MAX )
210	{
211	// get one empty container index from fifo_s2l
212	mwmr_read( fifo_s2l , &index , 1 );
213	temp = cont[index];
214
215	// get one container from kernel rx_chbuf
216	giet_nic_rx_move( temp );
217
218	// get packets number
219	unsigned int npackets = temp[0] & 0x0000FFFF;
220	unsigned int nwords = temp[0] >> 16;
221
222	if ( (x==0) && (y==0) )
223	{
224	printf("\n[CLASSIF] load on P[%d,%d,%d] get container %d at cycle %d"
225	" : %d packets / %d words\n",
226	x, y, p, index, giet_proctime(), npackets, nwords );
227	}
228
229	// put the full container index to fifo_l2a
230	mwmr_write( fifo_l2a, &index , 1 );
231
232	count++;
233	}
234
235	// all "load" threads synchronise before stats
236	sqt_barrier_wait( &rx_barrier );
237
238	// "load" thread[0][0] displays stats
239	if ( (x==0) && (y==0) ) giet_nic_rx_stats();
240
241	// all "load" thread exit
242	giet_pthread_exit("completed");
243
244	} // end load()
245
246
247	//////////////////////////////////////////////////////////////
248	__attribute__ ((constructor)) void store( unsigned int * arg )
249	//////////////////////////////////////////////////////////////
250	{
251	// get plat-form parameters
252	unsigned int x_size; // number of clusters in a row
253	unsigned int y_size; // number of clusters in a column
254	unsigned int nprocs; // number of processors per cluster
255	giet_procs_number( &x_size , &y_size , &nprocs );
256
257	// get processor identifiers
258	unsigned int x;
259	unsigned int y;
260	unsigned int p;
261	giet_proc_xyp( &x, &y, &p );
262
263	// each "store" thread wait mwmr channels initialisation
264	while ( local_sync[x][y] == 0 ) asm volatile ("nop");
265
266	// each "store" thread registers pointers on working containers in local stack
267	unsigned int n;
268	unsigned int* cont[NPROCS_MAX-2];
269
270	for ( n = 0 ; n < (nprocs - 2) ; n++ )
271	{
272	cont[n] = container[x][y][n];
273	}
274
275	// each "store" thread registers pointers on mwmr fifos in local stack
276	mwmr_channel_t* fifo_l2a = mwmr_l2a[x][y];
277	mwmr_channel_t* fifo_a2s = mwmr_a2s[x][y];
278	mwmr_channel_t* fifo_s2l = mwmr_s2l[x][y];
279
280	// only "store" thread[0][0] displays status
281	if ( (x==0) && (y==0) )
282	{
283	printf("\n[CLASSIF] store on P[%d,%d,%d] enters main loop at cycle %d\n"
284	" &mwmr_l2a = %x\n"
285	" &mwmr_a2s = %x\n"
286	" &mwmr_s2l = %x\n"
287	" &cont[0] = %x\n",
288	x , y , p , giet_proctime(),
289	(unsigned int)fifo_l2a,
290	(unsigned int)fifo_a2s,
291	(unsigned int)fifo_s2l,
292	(unsigned int)cont[0] );
293	}
294
295	/////////////////////////////////////////////////////////////
296	// "store" thread enter the main loop (on containers)
297	unsigned int count = 0; // stored containers count
298	unsigned int index; // empty container index
299	unsigned int* temp; // pointer on empty container
300
301	while ( count < CONTAINERS_MAX )
302	{
303	// get one working container index from fifo_a2s
304	mwmr_read( fifo_a2s , &index , 1 );
305	temp = cont[index];
306
307	// put one container to kernel tx_chbuf
308	giet_nic_tx_move( temp );
309
310	// get packets number
311	unsigned int npackets = temp[0] & 0x0000FFFF;
312	unsigned int nwords = temp[0] >> 16;
313
314	if ( (x==0) && (y==0) )
315	{
316	printf("\n[CLASSIF] store on P[%d,%d,%d] get container %d at cycle %d"
317	" : %d packets / %d words\n",
318	x, y, p, index, giet_proctime(), npackets, nwords );
319	}
320
321	// put the working container index to fifo_s2l
322	mwmr_write( fifo_s2l, &index , 1 );
323
324	count++;
325	}
326
327	// all "store" threads synchronise before result display
328	sqt_barrier_wait( &tx_barrier );
329
330	// "store" thread[0,0] and displays results
331	if ( (x==0) && (y==0) )
332	{
333	printf("\nClassification Results\n"
334	" - TYPE 0 : %d packets\n"
335	" - TYPE 1 : %d packets\n"
336	" - TYPE 2 : %d packets\n"
337	" - TYPE 3 : %d packets\n"
338	" - TYPE 4 : %d packets\n"
339	" - TYPE 5 : %d packets\n"
340	" - TYPE 6 : %d packets\n"
341	" - TYPE 7 : %d packets\n"
342	" - TYPE 8 : %d packets\n"
343	" - TYPE 9 : %d packets\n"
344	" - TYPE A : %d packets\n"
345	" - TYPE B : %d packets\n"
346	" - TYPE C : %d packets\n"
347	" - TYPE D : %d packets\n"
348	" - TYPE E : %d packets\n"
349	" - TYPE F : %d packets\n"
350	" TOTAL = %d packets\n",
351	counter[0x0], counter[0x1], counter[0x2], counter[0x3],
352	counter[0x4], counter[0x5], counter[0x6], counter[0x7],
353	counter[0x8], counter[0x9], counter[0xA], counter[0xB],
354	counter[0xC], counter[0xD], counter[0xE], counter[0xF],
355	counter[0x0]+ counter[0x1]+ counter[0x2]+ counter[0x3]+
356	counter[0x4]+ counter[0x5]+ counter[0x6]+ counter[0x7]+
357	counter[0x8]+ counter[0x9]+ counter[0xA]+ counter[0xB]+
358	counter[0xC]+ counter[0xD]+ counter[0xE]+ counter[0xF] );
359
360	giet_nic_tx_stats();
361	}
362
363	// all "store" thread exit
364	giet_pthread_exit("Thread completed");
365
366	} // end store()
367
368
369	///////////////////////////////////////////////////////////////
370	__attribute__ ((constructor)) void analyse( unsigned int* arg )
371	///////////////////////////////////////////////////////////////
372	{
373	// get platform parameters
374	unsigned int x_size; // number of clusters in row
375	unsigned int y_size; // number of clusters in a column
376	unsigned int nprocs; // number of processors per cluster
377	giet_procs_number( &x_size, &y_size, &nprocs );
378
379	// get processor identifiers
380	unsigned int x;
381	unsigned int y;
382	unsigned int p;
383	giet_proc_xyp( &x, &y, &p );
384
385	// each "analyse" thread wait mwmr channels initialisation
386	while ( local_sync[x][y] == 0 ) asm volatile ("nop");
387
388	// each "analyse" threads register pointers on working containers in local stack
389	unsigned int n;
390	unsigned int* cont[NPROCS_MAX-2];
391	for ( n = 0 ; n < (nprocs - 2) ; n++ )
392	{
393	cont[n] = container[x][y][n];
394	}
395
396	// each "analyse" threads register pointers on mwmr fifos in local stack
397	mwmr_channel_t* fifo_l2a = mwmr_l2a[x][y];
398	mwmr_channel_t* fifo_a2s = mwmr_a2s[x][y];
399
400	// only "analyse" thread[0][0] display status
401	if ( (x==0) && (y==0) )
402	{
403	printf("\n[CLASSIF] analyse on P[%d,%d,%d] enters main loop at cycle %d\n"
404	" &mwmr_l2a = %x\n"
405	" &mwmr_a2s = %x\n"
406	" &cont[0] = %x\n",
407	x, y, p, giet_proctime(),
408	(unsigned int)fifo_l2a,
409	(unsigned int)fifo_a2s,
410	(unsigned int)cont[0] );
411	}
412
413	//////////////////////////////////////////////////////////////////////
414	// all "analyse" threads enter the main infinite loop (on containers)
415	unsigned int index; // available container index
416	unsigned int* temp; // pointer on available container
417	unsigned int nwords; // number of words in container
418	unsigned int npackets; // number of packets in container
419	unsigned int length; // number of bytes in current packet
420	unsigned int first; // current packet first word in container
421	unsigned int type; // current packet type
422	unsigned int pid; // current packet index
423
424	#if VERBOSE_ANALYSE
425	unsigned int verbose_len[10]; // save length for 10 packets in one container
426	unsigned long long verbose_dst[10]; // save dest for 10 packets in one container
427	unsigned long long verbose_src[10]; // save source for 10 packets in one container
428	#endif
429
430	while ( 1 )
431	{
432
433	#if VERBOSE_ANALYSE
434	for( pid = 0 ; pid < 10 ; pid++ )
435	{
436	verbose_len[pid] = 0;
437	verbose_dst[pid] = 0;
438	verbose_src[pid] = 0;
439	}
440	#endif
441	// get one working container index from fifo_l2a
442	mwmr_read( fifo_l2a , &index , 1 );
443	temp = cont[index];
444
445	// get packets number and words number
446	npackets = temp[0] & 0x0000FFFF;
447	nwords = temp[0] >> 16;
448
449	if ( (x==0) && (y==0) )
450	{
451	printf("\n[CLASSIF] analyse on P[%d,%d,%d] get container at cycle %d"
452	" : %d packets / %d words\n",
453	x, y, p, giet_proctime(), npackets, nwords );
454	}
455
456	// initialize word index in container
457	first = 34;
458
459	// loop on packets
460	for( pid = 0 ; pid < npackets ; pid++ )
461	{
462	// get packet length from container header
463	if ( (pid & 0x1) == 0 ) length = temp[1+(pid>>1)] >> 16;
464	else length = temp[1+(pid>>1)] & 0x0000FFFF;
465
466	// compute packet DST and SRC MAC addresses
467	unsigned int word0 = temp[first];
468	unsigned int word1 = temp[first + 1];
469	unsigned int word2 = temp[first + 2];
470
471	#if VERBOSE_ANALYSE
472	unsigned long long dst = ((unsigned long long)(word1 & 0xFFFF0000)>>16) \|
473	(((unsigned long long)word0)<<16);
474	unsigned long long src = ((unsigned long long)(word1 & 0x0000FFFF)<<32) \|
475	((unsigned long long)word2);
476	if ( pid < 10 )
477	{
478	verbose_len[pid] = length;
479	verbose_dst[pid] = dst;
480	verbose_src[pid] = src;
481	}
482	#endif
483	// compute type from SRC MAC address and increment counter
484	type = word1 & 0x0000000F;
485	atomic_increment( &counter[type], 1 );
486
487	// exchange SRC & DST MAC addresses for TX
488	temp[first] = ((word1 & 0x0000FFFF)<<16) \| ((word2 & 0xFFFF0000)>>16);
489	temp[first + 1] = ((word2 & 0x0000FFFF)<<16) \| ((word0 & 0xFFFF0000)>>16);
490	temp[first + 2] = ((word0 & 0x0000FFFF)<<16) \| ((word1 & 0xFFFF0000)>>16);
491
492	// update first word index
493	if ( length & 0x3 ) first += (length>>2)+1;
494	else first += (length>>2);
495	}
496
497	#if VERBOSE_ANALYSE
498	if ( (x==0) && (y==0) )
499	{
500	printf("\n*** Thread analyse on P[%d,%d,%d] / container %d at cycle %d\n"
501	" - Packet 0 : plen = %d / dst_mac = %l / src_mac = %l\n"
502	" - Packet 1 : plen = %d / dst_mac = %l / src_mac = %l\n"
503	" - Packet 2 : plen = %d / dst_mac = %l / src_mac = %l\n"
504	" - Packet 3 : plen = %d / dst_mac = %l / src_mac = %l\n"
505	" - Packet 4 : plen = %d / dst_mac = %l / src_mac = %l\n"
506	" - Packet 5 : plen = %d / dst_mac = %l / src_mac = %l\n"
507	" - Packet 6 : plen = %d / dst_mac = %l / src_mac = %l\n"
508	" - Packet 7 : plen = %d / dst_mac = %l / src_mac = %l\n"
509	" - Packet 8 : plen = %d / dst_mac = %l / src_mac = %l\n"
510	" - Packet 9 : plen = %d / dst_mac = %l / src_mac = %l\n",
511	x , y , p , index , giet_proctime() ,
512	verbose_len[0] , verbose_dst[0] , verbose_src[0] ,
513	verbose_len[1] , verbose_dst[1] , verbose_src[1] ,
514	verbose_len[2] , verbose_dst[2] , verbose_src[2] ,
515	verbose_len[3] , verbose_dst[3] , verbose_src[3] ,
516	verbose_len[4] , verbose_dst[4] , verbose_src[4] ,
517	verbose_len[5] , verbose_dst[5] , verbose_src[5] ,
518	verbose_len[6] , verbose_dst[6] , verbose_src[6] ,
519	verbose_len[7] , verbose_dst[7] , verbose_src[7] ,
520	verbose_len[8] , verbose_dst[8] , verbose_src[8] ,
521	verbose_len[9] , verbose_dst[9] , verbose_src[9] );
522	}
523	#endif
524
525	// pseudo-random delay
526	unsigned int delay = giet_rand()>>3;
527	unsigned int time;
528	for( time = 0 ; time < delay ; time++ ) asm volatile ("nop");
529
530	// put the working container index to fifo_a2s
531	mwmr_write( fifo_a2s , &index , 1 );
532	}
533	} // end analyse()
534
535	//////////////////////////////////////////
536	__attribute__ ((constructor)) void main()
537	//////////////////////////////////////////
538	{
539	// indexes for loops
540	unsigned int x , y , n;
541
542	// get identifiers for proc executing main
543	unsigned int x_id; // x cluster coordinate
544	unsigned int y_id; // y cluster coordinate
545	unsigned int p_id; // local processor index
546	giet_proc_xyp( &x_id , &y_id , &p_id );
547
548	// get plat-form parameters
549	unsigned int x_size; // number of clusters in a row
550	unsigned int y_size; // number of clusters in a column
551	unsigned int nprocs; // number of processors per cluster
552	giet_procs_number( &x_size , &y_size , &nprocs );
553
554	// shared TTY allocation
555	giet_tty_alloc( 1 );
556	lock_init( &tty_lock);
557
558	// check plat-form parameters
559	giet_pthread_assert( ((nprocs >= 3) && (nprocs <= 8)),
560	"[CLASSIF ERROR] number of procs per cluster must in [3...8]");
561
562	giet_pthread_assert( ((x_size >= 1) && (x_size <= 16)),
563	"[CLASSIF ERROR] x_size must be in [1...16]");
564
565	giet_pthread_assert( ((y_size >= 1) && (y_size <= 16)),
566	"[CLASSIF ERROR] y_size must be in [1...16]");
567
568	// distributed heap initialisation
569	for ( x = 0 ; x < x_size ; x++ )
570	{
571	for ( y = 0 ; y < y_size ; y++ )
572	{
573	heap_init( x , y );
574	}
575	}
576
577	printf("\n[CLASSIF] start at cycle %d on %d cores\n",
578	giet_proctime(), (x_size * y_size * nprocs) );
579
580	// thread index
581	// required by pthread_create()
582	// unused in this appli because no pthread_join()
583	pthread_t trdid;
584
585	// rx_barrier initialisation
586	sqt_barrier_init( &rx_barrier, x_size , y_size , 1 );
587
588	// tx_barrier initialisation
589	sqt_barrier_init( &tx_barrier, x_size , y_size , 1 );
590
591	// allocate and start RX NIC and CMA channels
592	giet_nic_rx_alloc( x_size , y_size );
593	giet_nic_rx_start();
594
595	// allocate and start TX NIC and CMA channels
596	giet_nic_tx_alloc( x_size , y_size );
597	giet_nic_tx_start();
598
599	// Initialisation completed
600	printf("\n[CLASSIF] initialisation completed at cycle %d\n", giet_proctime() );
601
602	// launch load, store and analyse threads
603	for ( x = 0 ; x < x_size ; x++ )
604	{
605	for ( y = 0 ; y < y_size ; y++ )
606	{
607	for ( n = 0 ; n < nprocs ; n++ )
608	{
609	// compute argument value
610	thread_arg[x][y][n] = (x<<8) \| (y<<4) \| n;
611
612	if ( n == 0 ) // "load" thread
613	{
614	if ( giet_pthread_create( &trdid,
615	NULL, // no attribute
616	&load,
617	&thread_arg[x][y][n] ) )
618	{
619	printf("\n[CLASSIF ERROR] launching thread load\n" );
620	giet_pthread_exit( NULL );
621	}
622	else
623	{
624	printf("\n[CLASSIF] thread load activated : trdid = %x\n", trdid );
625	}
626	}
627	else if ( n == 1 ) // "store" thread
628	{
629	if ( giet_pthread_create( &trdid,
630	NULL, // no attribute
631	&store,
632	&thread_arg[x][y][n] ) )
633	{
634	printf("\n[CLASSIF ERROR] launching thread store\n" );
635	giet_pthread_exit( NULL );
636	}
637	else
638	{
639	printf("\n[CLASSIF] thread store activated : trdid = %x\n", trdid );
640	}
641	}
642	else // "analyse" threads
643	{
644	if ( giet_pthread_create( &trdid,
645	NULL, // no attribute
646	&analyse,
647	&thread_arg[x][y][n] ) )
648	{
649	printf("\n[CLASSIF ERROR] launching thread analyse\n" );
650	giet_pthread_exit( NULL );
651	}
652	else
653	{
654	printf("\n[CLASSIF] thread analyse activated : trdid = %x\n", trdid );
655	}
656	}
657	}
658	}
659	}
660
661	giet_pthread_exit( "completed" );
662
663	} // end main()
664

Note: See TracBrowser for help on using the repository browser.

Download in other formats: