Question

我得到的似乎是Encog（3.x）线程/工作负载错误......

在两台服务器上使用Encog CS 3.1,3.2和3.3与VS.NET 2015，每台服务器都配备双X5400系列4核/ 4线程Xeon（总共8核/ 8线程系统），没有任何问题。一个拥有32Gb RAM而另一个拥有64Gb（虽然我实际上只看到一个忙线，但那是另一个故事......）。

我最近在双X7500系列8核/ 16线程Xeon服务器（总共16核/ 32线程64Gb系统）上尝试了完全相同的代码，编译（exe）和VS IDE，我得到了这个错误（ Encog CS直接从GitHub预编译DLL：

System.OverflowException, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089Arithmetic operation resulted in an overflow. at Encog.Util.Concurrency.DetermineWorkload..ctor(Int32 threads, Int32 workloadSize)
 at Encog.Neural.Networks.Training.Propagation.Propagation.Init()
 at Encog.Neural.Networks.Training.Propagation.Propagation.CalculateGradients()
 at Encog.Neural.Networks.Training.Propagation.Propagation.ProcessPureBatch()
 at Encog.Neural.Networks.Training.Propagation.Propagation.Iteration()
 at EncogConsole.modEncog.ElmanTypeA(Boolean boolErrorVerbose, Boolean boolTestOutput) in C:\Users\Administrator\Documents\Visual Studio 2015\Projects\NormalizedConsole_v4B\EncogConsole\modEncog.vb:line 126
 at EncogConsole.modEncog.Main() in C:\Users\Administrator\Documents\Visual Studio 2015\Projects\NormalizedConsole_v4B\EncogConsole\modEncog.vb:line 35
 at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
 at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
 at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
 at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
 at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
 at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
 at System.Threading.ThreadHelper.ThreadStart()System.OverflowException: Arithmetic operation resulted in an overflow.
 at Encog.Util.Concurrency.DetermineWorkload..ctor(Int32 threads, Int32 workloadSize)
 at Encog.Neural.Networks.Training.Propagation.Propagation.Init()
 at Encog.Neural.Networks.Training.Propagation.Propagation.CalculateGradients()
 at Encog.Neural.Networks.Training.Propagation.Propagation.ProcessPureBatch()
 at Encog.Neural.Networks.Training.Propagation.Propagation.Iteration()
 at EncogConsole.modEncog.ElmanTypeA(Boolean boolErrorVerbose, Boolean boolTestOutput) in C:\Users\Administrator\Documents\Visual Studio 2015\Projects\NormalizedConsole_v4B\EncogConsole\modEncog.vb:line 126
 at EncogConsole.modEncog.Main() in C:\Users\Administrator\Documents\Visual Studio 2015\Projects\NormalizedConsole_v4B\EncogConsole\modEncog.vb:line 35
 at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
 at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
 at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
 at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
 at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
 at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
 at System.Threading.ThreadHelper.ThreadStart() 0.31s

这里的问题是代码完全相同，具有完全相同的数据集等。尝试了在前两个X5400服务器上正常运行的不同代码（尽管似乎是单个线程）仍然是同样的问题（在X7500服务器上）。所有使用最新补丁等运行W2K8R2的机器

代码是用VB完成的，但如前所述，工作正常，除了这个更高线程数的服务器。

是什么给出了？

Answer 1

建议使用：

var num =（int）Environment.ProcessorCount;

而不是：

var num =（int）（Math.Log（（（int）Process.GetCurrentProcess（）。ProcessorAffinity + 1），2））;

获取处理器（线程）计数：

Encog.Util.Concurrency.DetermineWorkload＆gt; public DetermineWorkload（int threads，int workloadSize）

as var num =（int）（Math.Log（（（int）Process.GetCurrentProcess（）。ProcessorAffinity + 1），2））;对于双CPU，32线程系统返回4294967295，而Environment.ProcessorCount正确返回32。

Encog DotNet 3.3多线程错误

1 个答案: