cpp_noname questions

• Does a call to MPI_Barrier affect every thread in an MPI process?
• Intermediate Code as a result of OpenMP pragmas
• Are C++ Vectors always contiguous? [duplicate]
• Optimal Sizes of data for sends and receives in MPI
• An exception gets thrown twice from a constructor with a function-try-block
• Differences between LAM MPI and OpenMPI
• pasting "::" and "Foo" does not give a valid preprocessing token
• What does the term "interrupt safe" mean?
• Declaring a variable with "class " keyword vs Declaring one without "class" keyword in function signatures
• Declaring vector as global variable in C++

cpp_noname answers