void Blob<Dtype>::scale_data(Dtype scale_factor) {
Dtype* data;
if (!data_) { return; }
switch (data_->head()) {
case SyncedMemory::SYNCED_PRV:
case SyncedMemory::HEAD_AT_PRV:
data = mutable_prv_data();
caffe_scal(prv_data_count(), scale_factor, data);
break;
case SyncedMemory::HEAD_AT_CPU:
data = mutable_cpu_data();
caffe_scal(count_, scale_factor, data);
return;
case SyncedMemory::HEAD_AT_GPU:
case SyncedMemory::SYNCED:
#ifndef CPU_ONLY
data = mutable_gpu_data();
caffe_gpu_scal(count_, scale_factor, data);
return;
#else
NO_GPU;
#endif
case SyncedMemory::UNINITIALIZED:
return;
default:
LOG(FATAL) << "Unknown SyncedMemory head state: " << data_->head();
}
}
void Blob<Dtype>::update(){
switch(data_->head()){
case SyncedMemory::SyncedHead::HEAD_AT_CPU:
dragon_axpy(count_, Dtype(-1), cpu_diff(), mutable_cpu_data());
break;
case SyncedMemory::SyncedHead::HEAD_AT_GPU:
case SyncedMemory::SyncedHead::SYNCED:
#ifndef CPU_ONLY
dragon_gpu_axpy<Dtype>(count_, Dtype(-1), gpu_diff(), mutable_gpu_data());
#endif
break;
default:
// UNINITIALIZED JUST DO NOTHING
;
}
}
void Blob<Dtype>::scale_data(Dtype scale_factor) {
Dtype* data;
if (!data_) {
return;
}
switch (data_->head()) {
case SyncedMemory::HEAD_AT_CPU: {
data = mutable_cpu_data();
caffe_scal(count_, scale_factor, data);
return;
}
case SyncedMemory::HEAD_AT_GPU:
case SyncedMemory::SYNCED: {
#ifndef CPU_ONLY
data = mutable_gpu_data();
if (device_->backend() == Backend::BACKEND_CUDA) {
#ifdef USE_CUDA
caffe_gpu_scal(count_, scale_factor, data);
#endif
} else {
#ifdef USE_GREENTEA
greentea_gpu_scal(device_->id(), count_, scale_factor,
(cl_mem) data, 0);
#endif
}
return;
#else
NO_GPU;
#endif
}
case SyncedMemory::UNINITIALIZED:
return;
default:
LOG(FATAL)<< "Unknown SyncedMemory head state: " << data_->head();
}
}