Useful functions

Initialize_Gaugefields(NC,NDW,NN...;
    condition = "cold",mpi = false,PEs=nothing,mpiinit = nothing,verbose_level = 2,randomnumber="Random")

Initialize gaugefields. 2D or 4D is supported.

Examples

If you want to have randomely distributed gauge fields (so-called "hot start") in four dimension, just do:

U = Initialize_Gaugefields(NC,Nwing,NX,NY,NZ,NT,condition = "hot")

If you want to have uniform gauge fields (so-called "cold start") in four dimension, just do:

U = Initialize_Gaugefields(NC,Nwing,NX,NY,NZ,NT,condition = "cold")

Return values:

• U: Dim dimensional vector. Here, Dim is a dimension (Dim = 2 or 4).

Keyword arguments:

• condition: cold(cold start) or hot(hot start). The default is cold
• mpi: Using MPI or not. The default is false. If you want to use MPI, you should call using MPI.
• PEs: If mpi = true, we have to set PEs = [2,2,2,2], which is numbers of regions for MPI process. prod(PEs) should be the number of total MPI processes.

MPI

Gaugefields with using MPI is not well tested.