Example program: tpa1

tpa1.c is the source code for the PPE, which spawns three copies of program tpa1_spu on SPEs 0, 1 and 2. The code in tpa1_spu executes the for-loop a different number of times in each of the SPEs. For each SPE, the loop is executed three times the number passed in as the parameter.

// file tpa1.c - error checking removed to improve readability

	...

	// the value of nr_spus is 3
	for (i = 0; i < nr_spus; i++) {
    spe_context_ptr_t spe;
    spe_program_handle_t *tpa1_spu;
    unsigned int entry = SPE_DEFAULT_ENTRY;
    union {
			void *ptr;
			unsigned int spe_num;
		} t_info;
		
   spe = spe_context_create(0, NULL);
   tpa1_spu = spe_image_open("tpa1_spu")
   (void)spe_program_load(spe, &tpa1_spu);
   printf("Spawning thread:  %d\n", i);
   t_tinfo.spe_num = i;
   (void)spe_context_run(spe, &entry, 0, t_info.ptr, NULL, NULL);
   (void)spe_context_detroy(spe);
	}


  // file tpa1_spu.c

	main(unsigned long long id, unsigned long long spe_num) 
	{
		int i;

		for( i=0; i<spe_num*3; i++ )
		  sim_printf("SPE#: %lld, Count: %d\n", spe_num, i);
	}