Esempio n. 1
0
        /// <summary>
        /// Specifies the internal thread entry.
        /// </summary>
        /// <param name="obj"></param>
        protected void InternalThreadEntry(object obj)
        {
            ActionStateArgs <T> state = obj as ActionStateArgs <T>;

            m_evtCancel.Reset();

            if (DoWork != null)
            {
                DoWork(this, state);
            }
        }
        /// <summary>
        /// Specifies the internal thread entry.
        /// </summary>
        /// <param name="obj"></param>
        protected void InternalThreadEntry(object obj)
        {
            m_evtRunning.Set();
            ActionStateArgs <T> state = obj as ActionStateArgs <T>;

            try
            {
                if (state.InitialDelay > 0)
                {
                    Thread.Sleep(state.InitialDelay);
                }

                if (DoWork != null)
                {
                    DoWork(this, state);
                }
            }
            finally
            {
                m_evtRunning.Reset();
                m_evtDone.Set();
            }
        }
Esempio n. 3
0
        private void Worker_DoWork(object sender, ActionStateArgs <T> e)
        {
            SolverInfo <T> info = e.Arg as SolverInfo <T>;
            NCCL <T>       nccl = null;

            m_cuda = new common.CudaDnn <T>(e.DeviceID, DEVINIT.CUBLAS | DEVINIT.CURAND, null, info.CudaPath);

            try
            {
                Solver <T> rank0 = info.Rank0;
                Log        log   = new Log("Worker solver for DeviceID = " + e.DeviceID.ToString());

                //-----------------------------------------
                //  Transfer the NCCL handle from the
                //  main kernel that created it to the
                //  one used by the CudaDnn on this thread.
                //
                //  After the copy, this thread will 'own'
                //  the nccl and be responsible for its
                //  destruction.
                //-----------------------------------------
                long hNccl = m_cuda.KernelCopyNccl(info.KernelHandle, info.NcclHandle);

                // Create solver and install callbacks
                SolverParameter param = rank0.parameter.Clone();
                param.device_id = e.DeviceID;
                param.type      = rank0.parameter.type;
                Solver <T> solver = Solver <T> .Create(m_cuda, log, param, rank0.CancelEvent, null, null, rank0.Database, null, rank0.solver_count, info.SolverRank);

                info.StartedEvent.Set();
                log.CHECK_EQ((int)solver.type, (int)rank0.type, "The solver types should be the same.");

                //-----------------------------------------
                //  Turn off logging for all other
                //  operations on the worker thread.
                //-----------------------------------------
                log.Enable = false;

                nccl = new NCCL <T>(m_cuda, log, solver, e.DeviceID, hNccl, info.GradientReadyEvents);

                info.InitializedEvent.Set();
                m_cuda.SynchronizeDevice();

                List <WaitHandle> rgWait = new List <WaitHandle>();
                rgWait.AddRange(rank0.CancelEvent.Handles);
                rgWait.Add(info.AllCreatedEvent);

                int nWait = WaitHandle.WaitAny(rgWait.ToArray());
                if (nWait < rgWait.Count - 1)
                {
                    return;
                }

                nccl.Broadcast();

                int nIterations = param.max_iter - solver.iter;
                if (info.IterationOverride > 0)
                {
                    nIterations = info.IterationOverride;
                }

                solver.Step(nIterations);
                solver.Dispose();
            }
            catch (Exception excpt)
            {
                info.Error = excpt;
                info.ErrorEvent.Set();
            }
            finally
            {
                if (nccl != null)
                {
                    nccl.Dispose();
                }

                m_cuda.Dispose();
                m_cuda = null;
            }
        }