SiPixelDigisSoAFromCUDA Class Reference

Inheritance diagram for SiPixelDigisSoAFromCUDA:

Public Member Functions
	SiPixelDigisSoAFromCUDA (const edm::ParameterSet &iConfig)
	~SiPixelDigisSoAFromCUDA () override=default
Public Member Functions inherited from edm::stream::EDProducer< edm::ExternalWork >
	EDProducer ()=default
	EDProducer (const EDProducer &)=delete
bool	hasAbilityToProduceInBeginLumis () const final
bool	hasAbilityToProduceInBeginProcessBlocks () const final
bool	hasAbilityToProduceInBeginRuns () const final
bool	hasAbilityToProduceInEndLumis () const final
bool	hasAbilityToProduceInEndProcessBlocks () const final
bool	hasAbilityToProduceInEndRuns () const final
const EDProducer &	operator= (const EDProducer &)=delete

Static Public Member Functions
static void	fillDescriptions (edm::ConfigurationDescriptions &descriptions)

Private Member Functions
void	acquire (const edm::Event &iEvent, const edm::EventSetup &iSetup, edm::WaitingTaskWithArenaHolder waitingTaskHolder) override
void	produce (edm::Event &iEvent, const edm::EventSetup &iSetup) override

Private Attributes
edm::EDGetTokenT< cms::cuda::Product< SiPixelDigisCUDA > >	digiGetToken_
edm::EDPutTokenT< SiPixelDigisSoA >	digiPutToken_
int	nDigis_
cms::cuda::host::unique_ptr< uint16_t[]>	store_

Additional Inherited Members
Public Types inherited from edm::stream::EDProducer< edm::ExternalWork >
using	CacheTypes = CacheContexts< T... >
using	GlobalCache = typename CacheTypes::GlobalCache
using	HasAbility = AbilityChecker< T... >
using	InputProcessBlockCache = typename CacheTypes::InputProcessBlockCache
using	LuminosityBlockCache = typename CacheTypes::LuminosityBlockCache
using	LuminosityBlockContext = LuminosityBlockContextT< LuminosityBlockCache, RunCache, GlobalCache >
using	LuminosityBlockSummaryCache = typename CacheTypes::LuminosityBlockSummaryCache
using	RunCache = typename CacheTypes::RunCache
using	RunContext = RunContextT< RunCache, GlobalCache >
using	RunSummaryCache = typename CacheTypes::RunSummaryCache

Detailed Description

Definition at line 14 of file SiPixelDigisSoAFromCUDA.cc.

Constructor & Destructor Documentation

SiPixelDigisSoAFromCUDA()

SiPixelDigisSoAFromCUDA::SiPixelDigisSoAFromCUDA ( const edm::ParameterSet &  iConfig )

explicit

Definition at line 35 of file SiPixelDigisSoAFromCUDA.cc.

    : digiGetToken_(consumes<cms::cuda::Product<SiPixelDigisCUDA>>(iConfig.getParameter<edm::InputTag>("src"))),
      digiPutToken_(produces<SiPixelDigisSoA>()) {}

~SiPixelDigisSoAFromCUDA()

SiPixelDigisSoAFromCUDA::~SiPixelDigisSoAFromCUDA ( )

overridedefault

Member Function Documentation

acquire()

void SiPixelDigisSoAFromCUDA::acquire ( const edm::Event &  iEvent, const edm::EventSetup &  iSetup, edm::WaitingTaskWithArenaHolder  waitingTaskHolder  )

overrideprivate

Definition at line 45 of file SiPixelDigisSoAFromCUDA.cc.

References digiGetToken_, iEvent, eostools::move(), nDigis_, and store_.

                                                                                       {
  // Do the transfer in a CUDA stream parallel to the computation CUDA stream
  cms::cuda::ScopedContextAcquire ctx{iEvent.streamID(), std::move(waitingTaskHolder)};

  const auto& gpuDigis = ctx.get(iEvent, digiGetToken_);

  nDigis_ = gpuDigis.nDigis();
  store_ = gpuDigis.copyAllToHostAsync(ctx.stream());
}

fillDescriptions()

void SiPixelDigisSoAFromCUDA::fillDescriptions ( edm::ConfigurationDescriptions &  descriptions )

static

Definition at line 39 of file SiPixelDigisSoAFromCUDA.cc.

References edm::ConfigurationDescriptions::addWithDefaultLabel(), submitPVResolutionJobs::desc, and HLT_2022v15_cff::InputTag.

                                                                                         {
  edm::ParameterSetDescription desc;
  desc.add<edm::InputTag>("src", edm::InputTag("siPixelClustersCUDA"));
  descriptions.addWithDefaultLabel(desc);
}

produce()

void SiPixelDigisSoAFromCUDA::produce ( edm::Event &  iEvent, const edm::EventSetup &  iSetup  )

overrideprivate

Definition at line 57 of file SiPixelDigisSoAFromCUDA.cc.

References digiPutToken_, iEvent, SiPixelDigisCUDASOAView::kMAX, nDigis_, and store_.

                                                                                   {
  // The following line copies the data from the pinned host memory to
  // regular host memory. In principle that feels unnecessary (why not
  // just use the pinned host memory?). There are a few arguments for
  // doing it though
  // - Now can release the pinned host memory back to the (caching) allocator
  //   * if we'd like to keep the pinned memory, we'd need to also
  //     keep the CUDA stream around as long as that, or allow pinned
  //     host memory to be allocated without a CUDA stream
  // - What if a CPU algorithm would produce the same SoA? We can't
  //   use cudaMallocHost without a GPU...

  auto tmp_view = SiPixelDigisCUDASOAView(store_, nDigis_, SiPixelDigisCUDASOAView::StorageLocationHost::kMAX);

  iEvent.emplace(digiPutToken_, nDigis_, tmp_view.pdigi(), tmp_view.rawIdArr(), tmp_view.adc(), tmp_view.clus());

  store_.reset();
}

Member Data Documentation

digiGetToken_

edm::EDGetTokenT<cms::cuda::Product<SiPixelDigisCUDA> > SiPixelDigisSoAFromCUDA::digiGetToken_

private

Definition at line 27 of file SiPixelDigisSoAFromCUDA.cc.

Referenced by acquire().

digiPutToken_

edm::EDPutTokenT<SiPixelDigisSoA> SiPixelDigisSoAFromCUDA::digiPutToken_

private

Definition at line 28 of file SiPixelDigisSoAFromCUDA.cc.

Referenced by produce().

nDigis_

int SiPixelDigisSoAFromCUDA::nDigis_

private

Definition at line 32 of file SiPixelDigisSoAFromCUDA.cc.

Referenced by acquire(), and produce().

store_

cms::cuda::host::unique_ptr<uint16_t[]> SiPixelDigisSoAFromCUDA::store_

private

Definition at line 30 of file SiPixelDigisSoAFromCUDA.cc.

Referenced by acquire(), and produce().