void ProblemDescription::prepareRun( bool subsample)
{
debug_status( "ProblemDescription", "prepareRun", "start");
if ( subsample ){ trajectory.subsample(); }
//if the factory is not empty of constraints,
// get all of the constraints for the current resolution
if ( !factory.empty() ){ factory.getAll( trajectory.N() ); }
//are we going to use the goalset on this iteration?
// If we are subsampling, then even if there is a goalset
// to use, do not use it.
bool use_goalset = goalset && !subsample;
if ( use_goalset ){
//do not subsample if doing goalset run.
trajectory.startGoalset();
//add the goal constraint to the constraints vector.
factory.addGoalset( goalset );
}
//are we doing covariant on the current
// optimization? Do not do covariant optimization
// if we are subsampling
doing_covariant = is_covariant && !subsample;
metric.initialize( trajectory.fullN(),
trajectory.getObjectiveType(),
false,
use_goalset );
if ( subsample ){
subsampled_metric.initialize( trajectory.N(),
trajectory.getObjectiveType(),
true);
}
//prepare the gradient for a run at this resolution
smoothness_function.prepareRun( trajectory, metric);
//are we doing covariant optimization at this stage of optimiation?
// do not do covariant optimization if there is subsampling
if ( doing_covariant ){
trajectory.getCovariantTrajectory(metric, covariant_trajectory);
}
debug_status( "ProblemDescription", "prepareRun", "end");
}
static void evg_cf_engine_fetch(struct evg_compute_unit_t *compute_unit)
{
struct evg_ndrange_t *ndrange = evg_gpu->ndrange;
struct evg_wavefront_t *wavefront;
char str[MAX_LONG_STRING_SIZE];
char str_trimmed[MAX_LONG_STRING_SIZE];
struct evg_inst_t *inst;
struct evg_uop_t *uop;
struct evg_work_item_uop_t *work_item_uop;
struct evg_work_item_t *work_item;
int work_item_id;
/* Schedule wavefront */
wavefront = evg_compute_unit_schedule(compute_unit);
if (!wavefront)
return;
/* Emulate CF instruction */
evg_wavefront_execute(wavefront);
inst = &wavefront->cf_inst;
/* Create uop */
uop = evg_uop_create();
uop->wavefront = wavefront;
uop->work_group = wavefront->work_group;
uop->compute_unit = compute_unit;
uop->id_in_compute_unit = compute_unit->gpu_uop_id_counter++;
uop->alu_clause_trigger = wavefront->clause_kind == EVG_CLAUSE_ALU;
uop->tex_clause_trigger = wavefront->clause_kind == EVG_CLAUSE_TEX;
uop->no_clause_trigger = wavefront->clause_kind == EVG_CLAUSE_CF;
uop->last = DOUBLE_LINKED_LIST_MEMBER(wavefront->work_group, finished, wavefront);
uop->wavefront_last = uop->last && uop->no_clause_trigger;
uop->global_mem_read = wavefront->global_mem_read;
uop->global_mem_write = wavefront->global_mem_write;
uop->active_mask_update = wavefront->active_mask_update;
uop->active_mask_push = wavefront->active_mask_push;
uop->active_mask_pop = wavefront->active_mask_pop;
uop->active_mask_stack_top = wavefront->stack_top;
uop->vliw_slots = 1;
/* If debugging active mask, store active state for work-items */
if (debug_status(evg_stack_debug_category))
evg_uop_save_active_mask(uop);
/* If instruction is a global memory write, record addresses */
if (uop->global_mem_write)
{
assert((inst->info->flags & EVG_INST_FLAG_MEM_WRITE));
EVG_FOREACH_WORK_ITEM_IN_WAVEFRONT(wavefront, work_item_id)
{
work_item = ndrange->work_items[work_item_id];
work_item_uop = &uop->work_item_uop[work_item->id_in_wavefront];
work_item_uop->global_mem_access_addr = work_item->global_mem_access_addr;
work_item_uop->global_mem_access_size = work_item->global_mem_access_size;
}
// single iteration of local smoothing
//
// precondition: prepareChompIter has been called since the last
// time xi was modified
void ChompLocalOptimizer::optimize()
{
debug_status( TAG, "optimize", "start" );
MatX h_t, H_t, P_t, P_t_inv, delta_t;
constraint_magnitude = 0;
debug_status( TAG, "optimize", "pre-for-loop" );
for (int t=0; t < problem.N(); ++t){
bool is_constrained = problem.evaluateConstraint( h_t, H_t, t );
if ( is_constrained ){
constraint_magnitude = std::max(constraint_magnitude,
h_t.lpNorm<Eigen::Infinity>());
P_t_inv = ( H_t*H_t.transpose() ).inverse();
const int M = problem.M();
problem.updateTrajectory(
(alpha *(MatX::Identity(M,M) - H_t.transpose()*P_t_inv*H_t )
* g.row(t).transpose()
+ H_t.transpose()*P_t_inv*h_t).transpose(),
t );
}
//there are no constraints, so just add the negative gradient
// into the trajectory (multiplied by the step size, of course.
else {
problem.updateTrajectory( alpha * g.row(t), t );
}
}
debug_status( TAG, "optimize", "end" );
}
void ProblemDescription::endRun()
{
debug_status( "ProblemDescription", "endRun", "start");
if ( doing_covariant ){
covariant_trajectory.getNonCovariantTrajectory( metric,
trajectory );
}
if( use_goalset ){
//Restore the trajectory to the non-goalset type
trajectory.endGoalset();
//remove the goal constraint, so that it is not deleted along
// with the other constraints.
factory.removeGoalset();
}
if ( trajectory.isSubsampled() ){
trajectory.endSubsample();
}
debug_status( "ProblemDescription", "endRun", "end");
}
/* Called before and ALU clause starts for a wavefront */
void evg_isa_alu_clause_start(struct evg_wavefront_t *wavefront)
{
/* Copy 'active' mask at the top of the stack to 'pred' mask */
bit_map_copy(wavefront->pred, 0, wavefront->active_stack,
wavefront->stack_top * wavefront->work_item_count, wavefront->work_item_count);
if (debug_status(evg_isa_debug_category))
{
evg_isa_debug(" %s:pred=", wavefront->name);
bit_map_dump(wavefront->pred, 0, wavefront->work_item_count,
debug_file(evg_isa_debug_category));
}
/* Flag 'push_before_done' will be set by the first PRED_SET* inst */
wavefront->push_before_done = 0;
/* Stats */
wavefront->alu_clause_count++;
}
/* FIXME - merge with ctx_execute */
void mips_isa_execute_inst(struct mips_ctx_t *ctx) {
// struct mips_regs_t *regs = ctx->regs;
ctx->next_ip = ctx->n_next_ip;
ctx->n_next_ip += 4;
/* Debug */
if (debug_status(mips_isa_inst_debug_category)) {
mips_isa_inst_debug("%d %8lld %x: ", ctx->pid,
asEmu(mips_emu)->instructions, ctx->regs->pc);
mips_inst_debug_dump(&ctx->inst, debug_file(mips_isa_inst_debug_category));
}
/* Call instruction emulation function */
// regs->pc = regs->pc + ctx->inst.info->size;
if (ctx->inst.info->opcode) mips_isa_inst_func[ctx->inst.info->opcode](ctx);
/* Statistics */
mips_inst_freq[ctx->inst.info->opcode]++;
/* Debug */
mips_isa_inst_debug("\n");
// if (debug_status(mips_isa_call_debug_category))
// mips_isa_debug_call(ctx);
}
static void X86ContextUpdateState(X86Context *self, X86ContextState state)
{
X86Emu *emu = self->emu;
X86ContextState status_diff;
char state_str[MAX_STRING_SIZE];
/* Remove contexts from the following lists:
* running, suspended, zombie */
if (DOUBLE_LINKED_LIST_MEMBER(emu, running, self))
DOUBLE_LINKED_LIST_REMOVE(emu, running, self);
if (DOUBLE_LINKED_LIST_MEMBER(emu, suspended, self))
DOUBLE_LINKED_LIST_REMOVE(emu, suspended, self);
if (DOUBLE_LINKED_LIST_MEMBER(emu, zombie, self))
DOUBLE_LINKED_LIST_REMOVE(emu, zombie, self);
if (DOUBLE_LINKED_LIST_MEMBER(emu, finished, self))
DOUBLE_LINKED_LIST_REMOVE(emu, finished, self);
/* If the difference between the old and new state lies in other
* states other than 'x86_ctx_specmode', a reschedule is marked. */
status_diff = self->state ^ state;
if (status_diff & ~X86ContextSpecMode)
emu->schedule_signal = 1;
/* Update state */
self->state = state;
if (self->state & X86ContextFinished)
self->state = X86ContextFinished
| (state & X86ContextAlloc)
| (state & X86ContextMapped);
if (self->state & X86ContextZombie)
self->state = X86ContextZombie
| (state & X86ContextAlloc)
| (state & X86ContextMapped);
if (!(self->state & X86ContextSuspended) &&
!(self->state & X86ContextFinished) &&
!(self->state & X86ContextZombie) &&
!(self->state & X86ContextLocked))
self->state |= X86ContextRunning;
else
self->state &= ~X86ContextRunning;
/* Insert context into the corresponding lists. */
if (self->state & X86ContextRunning)
DOUBLE_LINKED_LIST_INSERT_HEAD(emu, running, self);
if (self->state & X86ContextZombie)
DOUBLE_LINKED_LIST_INSERT_HEAD(emu, zombie, self);
if (self->state & X86ContextFinished)
DOUBLE_LINKED_LIST_INSERT_HEAD(emu, finished, self);
if (self->state & X86ContextSuspended)
DOUBLE_LINKED_LIST_INSERT_HEAD(emu, suspended, self);
/* Dump new state (ignore 'x86_ctx_specmode' state, it's too frequent) */
if (debug_status(x86_context_debug_category) && (status_diff & ~X86ContextSpecMode))
{
str_map_flags(&x86_context_state_map, self->state, state_str, sizeof state_str);
X86ContextDebug("inst %lld: ctx %d changed state to %s\n",
asEmu(emu)->instructions, self->pid, state_str);
}
/* Start/stop x86 timer depending on whether there are any contexts
* currently running. */
if (emu->running_list_count)
m2s_timer_start(asEmu(emu)->timer);
else
m2s_timer_stop(asEmu(emu)->timer);
}
void evg_isa_write_task_commit(struct evg_work_item_t *work_item)
{
struct linked_list_t *task_list = work_item->write_task_list;
struct evg_wavefront_t *wavefront = work_item->wavefront;
struct evg_work_group_t *work_group = work_item->work_group;
struct evg_isa_write_task_t *wt;
struct evg_inst_t *inst;
/* Process first tasks of type:
* - EVG_ISA_WRITE_TASK_WRITE_DEST
* - EVG_ISA_WRITE_TASK_WRITE_LDS
*/
for (linked_list_head(task_list); !linked_list_is_end(task_list); )
{
/* Get task */
wt = linked_list_get(task_list);
assert(wt->work_item == work_item);
inst = wt->inst;
switch (wt->kind)
{
case EVG_ISA_WRITE_TASK_WRITE_DEST:
{
if (wt->write_mask)
evg_isa_write_gpr(work_item, wt->gpr, wt->rel, wt->chan, wt->value);
work_item->pv.elem[wt->inst->alu] = wt->value;
/* Debug */
if (evg_isa_debugging())
{
evg_isa_debug(" i%d:%s", work_item->id,
map_value(&evg_pv_map, wt->inst->alu));
if (wt->write_mask)
{
evg_isa_debug(",");
evg_inst_dump_gpr(wt->gpr, wt->rel, wt->chan, 0,
debug_file(evg_isa_debug_category));
}
evg_isa_debug("<=");
gpu_isa_dest_value_dump(inst, &wt->value,
debug_file(evg_isa_debug_category));
}
break;
}
case EVG_ISA_WRITE_TASK_WRITE_LDS:
{
struct mem_t *local_mem;
union evg_reg_t lds_value;
local_mem = work_group->local_mem;
assert(local_mem);
assert(wt->lds_value_size);
mem_write(local_mem, wt->lds_addr, wt->lds_value_size, &wt->lds_value);
/* Debug */
lds_value.as_uint = wt->lds_value;
evg_isa_debug(" i%d:LDS[0x%x]<=(%u,%gf) (%d bytes)", work_item->id, wt->lds_addr,
lds_value.as_uint, lds_value.as_float, (int) wt->lds_value_size);
break;
}
default:
linked_list_next(task_list);
continue;
}
/* Done with this task */
repos_free_object(evg_isa_write_task_repos, wt);
linked_list_remove(task_list);
}
/* Process PUSH_BEFORE, PRED_SET */
for (linked_list_head(task_list); !linked_list_is_end(task_list); )
{
/* Get task */
wt = linked_list_get(task_list);
inst = wt->inst;
/* Process */
switch (wt->kind)
{
case EVG_ISA_WRITE_TASK_PUSH_BEFORE:
{
if (!wavefront->push_before_done)
evg_wavefront_stack_push(wavefront);
wavefront->push_before_done = 1;
break;
}
case EVG_ISA_WRITE_TASK_SET_PRED:
{
int update_pred = EVG_ALU_WORD1_OP2.update_pred;
int update_exec_mask = EVG_ALU_WORD1_OP2.update_exec_mask;
assert(inst->info->fmt[1] == EVG_FMT_ALU_WORD1_OP2);
if (update_pred)
evg_work_item_set_pred(work_item, wt->cond);
if (update_exec_mask)
evg_work_item_set_active(work_item, wt->cond);
/* Debug */
if (debug_status(evg_isa_debug_category))
{
if (update_pred && update_exec_mask)
evg_isa_debug(" i%d:act/pred<=%d", work_item->id, wt->cond);
else if (update_pred)
evg_isa_debug(" i%d:pred=%d", work_item->id, wt->cond);
else if (update_exec_mask)
evg_isa_debug(" i%d:pred=%d", work_item->id, wt->cond);
}
break;
}
default:
abort();
}
/* Done with task */
repos_free_object(evg_isa_write_task_repos, wt);
linked_list_remove(task_list);
}
/* List should be empty */
assert(!linked_list_count(task_list));
}
/* Execute one instruction in the wavefront */
void si_wavefront_execute(struct si_wavefront_t *wavefront)
{
struct si_ndrange_t *ndrange;
struct si_work_group_t *work_group;
struct si_work_item_t *work_item;
struct si_inst_t *inst;
char inst_dump[MAX_INST_STR_SIZE];
unsigned int pc;
ndrange = wavefront->ndrange;
int work_item_id;
/* Get current work-group */
ndrange = wavefront->ndrange;
work_group = wavefront->work_group;
work_item = NULL;
inst = NULL;
assert(!DOUBLE_LINKED_LIST_MEMBER(work_group, finished, wavefront));
/* Reset instruction flags */
wavefront->vector_mem_write = 0;
wavefront->vector_mem_read = 0;
wavefront->scalar_mem_read = 0;
wavefront->local_mem_write = 0;
wavefront->local_mem_read = 0;
wavefront->pred_mask_update = 0;
wavefront->mem_wait = 0;
wavefront->barrier = 0;
assert(!wavefront->finished);
/* Grab the next instruction and update the pointer */
wavefront->inst_size = si_inst_decode(wavefront->wavefront_pool, &wavefront->inst, 0);
/* Stats */
si_emu->inst_count++;
wavefront->emu_inst_count++;
wavefront->inst_count++;
/* Set the current instruction */
inst = &wavefront->inst;
pc = wavefront->wavefront_pool - wavefront->wavefront_pool_start;
/*MIAOW start - Print the debug message to stdout, stderr to the open file stream*/
si_isa_debug("\n###%d_%d_%d", kernel_config_count - 1, wavefront->work_group->id, wavefront->id_in_work_group, pc, wavefront->inst_size);
/*MIAOW stop*/
/* Execute the current instruction */
switch (inst->info->fmt)
{
/* Scalar ALU Instructions */
case SI_FMT_SOP1:
{
/* Dump instruction string when debugging */
if (debug_status(si_isa_debug_category))
{
si_inst_dump_sop1(inst, wavefront->inst_size, pc, wavefront->wavefront_pool, inst_dump,
MAX_INST_STR_SIZE);
si_isa_debug("\n%s", inst_dump);
}
/* Stats */
si_emu->scalar_alu_inst_count++;
wavefront->scalar_alu_inst_count++;
/* Only one work item executes the instruction */
work_item = wavefront->scalar_work_item;
(*si_isa_inst_func[inst->info->inst])(work_item, inst);
if (debug_status(si_isa_debug_category))
{
si_isa_debug("\n");
}
break;
}
case SI_FMT_SOP2:
{
/* Dump instruction string when debugging */
if (debug_status(si_isa_debug_category))
{
si_inst_dump_sop2(inst, wavefront->inst_size, pc, wavefront->wavefront_pool, inst_dump,
MAX_INST_STR_SIZE);
si_isa_debug("\n%s", inst_dump);
}
/* Stats */
si_emu->scalar_alu_inst_count++;
wavefront->scalar_alu_inst_count++;
/* Only one work item executes the instruction */
work_item = wavefront->scalar_work_item;
(*si_isa_inst_func[inst->info->inst])(work_item, inst); //Calling a function pointer in machine.c
if (debug_status(si_isa_debug_category))
{
si_isa_debug("\n");
}
break;
}
case SI_FMT_SOPP:
{
/* Dump instruction string when debugging */
if (debug_status(si_isa_debug_category))
{
si_inst_dump_sopp(inst, wavefront->inst_size, pc, wavefront->wavefront_pool, inst_dump,
MAX_INST_STR_SIZE);
si_isa_debug("\n%s", inst_dump);
}
/* Stats */
if (wavefront->inst.micro_inst.sopp.op > 1 &&
wavefront->inst.micro_inst.sopp.op < 10)
{
si_emu->branch_inst_count++;
wavefront->branch_inst_count++;
} else
{
si_emu->scalar_alu_inst_count++;
wavefront->scalar_alu_inst_count++;
}
/* Only one work item executes the instruction */
work_item = wavefront->scalar_work_item;
(*si_isa_inst_func[inst->info->inst])(work_item, inst);
if (debug_status(si_isa_debug_category))
{
si_isa_debug("\n");
}
break;
}
case SI_FMT_SOPC:
{
/* Dump instruction string when debugging */
if (debug_status(si_isa_debug_category))
{
si_inst_dump_sopc(inst, wavefront->inst_size, pc, wavefront->wavefront_pool, inst_dump,
MAX_INST_STR_SIZE);
si_isa_debug("\n%s", inst_dump);
}
/* Stats */
si_emu->scalar_alu_inst_count++;
wavefront->scalar_alu_inst_count++;
/* Only one work item executes the instruction */
work_item = wavefront->scalar_work_item;
(*si_isa_inst_func[inst->info->inst])(work_item, inst);
if (debug_status(si_isa_debug_category))
{
si_isa_debug("\n");
}
break;
}
case SI_FMT_SOPK:
{
/* Dump instruction string when debugging */
if (debug_status(si_isa_debug_category))
{
si_inst_dump_sopk(inst, wavefront->inst_size, pc, wavefront->wavefront_pool, inst_dump,
MAX_INST_STR_SIZE);
si_isa_debug("\n%s", inst_dump);
}
/* Stats */
si_emu->scalar_alu_inst_count++;
wavefront->scalar_alu_inst_count++;
/* Only one work item executes the instruction */
work_item = wavefront->scalar_work_item;
(*si_isa_inst_func[inst->info->inst])(work_item, inst);
if (debug_status(si_isa_debug_category))
{
si_isa_debug("\n");
}
break;
}
/* Scalar Memory Instructions */
case SI_FMT_SMRD:
{
/* Dump instruction string when debugging */
if (debug_status(si_isa_debug_category))
{
si_inst_dump_smrd(inst, wavefront->inst_size, pc, wavefront->wavefront_pool, inst_dump,
MAX_INST_STR_SIZE);
si_isa_debug("\n%s", inst_dump);
}
/* Stats */
si_emu->scalar_mem_inst_count++;
wavefront->scalar_mem_inst_count++;
/* Only one work item executes the instruction */
work_item = wavefront->scalar_work_item;
(*si_isa_inst_func[inst->info->inst])(work_item, inst);
if (debug_status(si_isa_debug_category))
{
si_isa_debug("\n");
}
break;
}
/* Vector ALU Instructions */
case SI_FMT_VOP2:
{
/* Dump instruction string when debugging */
if (debug_status(si_isa_debug_category))
{
si_inst_dump_vop2(inst, wavefront->inst_size, pc, wavefront->wavefront_pool, inst_dump,
MAX_INST_STR_SIZE);
si_isa_debug("\n%s", inst_dump);
}
/* Stats */
si_emu->vector_alu_inst_count++;
wavefront->vector_alu_inst_count++;
/* Execute the instruction */
SI_FOREACH_WORK_ITEM_IN_WAVEFRONT(wavefront, work_item_id)
{
work_item = ndrange->work_items[work_item_id];
if(si_wavefront_work_item_active(wavefront, work_item->id_in_wavefront))
(*si_isa_inst_func[inst->info->inst])(work_item, inst);
}
if (debug_status(si_isa_debug_category))
{
si_isa_debug("\n");
}
break;
}
case SI_FMT_VOP1:
{
/* Dump instruction string when debugging */
if (debug_status(si_isa_debug_category))
{
si_inst_dump_vop1(inst, wavefront->inst_size, pc, wavefront->wavefront_pool, inst_dump,
MAX_INST_STR_SIZE);
si_isa_debug("\n%s", inst_dump);
}
/* Stats */
si_emu->vector_alu_inst_count++;
wavefront->vector_alu_inst_count++;
if (inst->micro_inst.vop1.op == 2)
{
/* Instruction ignores execution mask and is only executed on one work item.
* Execute on the first active work item from the least significant bit in EXEC.
* (if exec is 0, execute work item 0) */
work_item = ndrange->work_items[wavefront->work_item_id_first];
if (si_isa_read_sreg(work_item, SI_EXEC) == 0 && si_isa_read_sreg(work_item, SI_EXEC + 1) == 0)
{
(*si_isa_inst_func[inst->info->inst])(work_item, inst);
}
else {
SI_FOREACH_WORK_ITEM_IN_WAVEFRONT(wavefront, work_item_id)
{
work_item = ndrange->work_items[work_item_id];
if(si_wavefront_work_item_active(wavefront, work_item->id_in_wavefront))
{
(*si_isa_inst_func[inst->info->inst])(work_item, inst);
break;
}
}
}
}
