Added i/o for configurations in native BDIO format

src/Groups/SU2Types.jl

@@ -32,8 +32,8 @@ Base.zero(::Type{M2x2{T}})   where T <: AbstractFloat = M2x2{T}(zero(T),zero(T),
 Base.one(::Type{SU2{T}})     where T <: AbstractFloat = SU2{T}(one(T),zero(T))
 Base.one(::Type{M2x2{T}})    where T <: AbstractFloat = M2x2{T}(one(T),zero(T),zero(T),one(T))
 
-Base.convert(::Type{M2x2{T}}, a::SU3alg{T}) where T = alg2mat(a)
+Base.convert(::Type{M2x2{T}}, a::SU2alg{T}) where T = alg2mat(a)
-Base.convert(::Type{M2x2{T}}, a::SU3{T}) where T = M2x2{T}(a.t1,a.t2,-conj(a.t2), conj(a.t1))
+Base.convert(::Type{M2x2{T}}, a::SU2{T}) where T = M2x2{T}(a.t1,a.t2,-conj(a.t2), conj(a.t1))
 
 Random.rand(rng::AbstractRNG, ::Random.SamplerType{SU2alg{T}}) where T <: AbstractFloat = SU2alg{T}(randn(rng,T),randn(rng,T),randn(rng,T))
 Random.rand(rng::AbstractRNG, ::Random.SamplerType{SU2{T}})    where T <: AbstractFloat = exp(SU2alg{T}(randn(rng,T),randn(rng,T),randn(rng,T)))

src/LatticeGPU.jl

@@ -45,7 +45,7 @@ export Eoft_clover, Eoft_plaq, Qtop
 export FlowIntr, wfl_euler, zfl_euler, wfl_rk2, zfl_rk2, wfl_rk3, zfl_rk3
 export flw, flw_adapt
 export sfcoupling, bndfield, setbndfield
-export import_lex64, import_cern64, import_bsfqcd
+export import_lex64, import_cern64, import_bsfqcd, save_cnfg, read_cnfg
 
 include("Spinors/Spinors.jl")
 

src/YM/YM.jl

@@ -147,6 +147,6 @@ include("YMsf.jl")
 export sfcoupling, bndfield, setbndfield
 
 include("YMio.jl")
-export import_lex64, import_cern64, import_bsfqcd
+export import_lex64, import_cern64, import_bsfqcd, save_cnfg, read_cnfg
 
 end

src/YM/YMio.jl

@@ -10,9 +10,174 @@
 ###                               
 
 """
-    function import_lex64(fname::String, lp::SpaceParm)
+    read_cnfg(U, lp::SpaceParm{4,M,B,D},)
 
-import a double precision configuration in lexicographic format. SF boundary conditions are assummed. 
+Reads configuration from file `fname` using the native (BDIO) format.
+"""
+function read_cnfg(fname::String)
+
+    UID_HDR = 14
+    fb = BDIO_open(fname, "r")
+    while BDIO_get_uinfo(fb) != UID_HDR
+        BDIO_seek!(fb)
+    end
+    ihdr = Vector{Int32}(undef, 2)
+    BDIO_read(fb, ihdr)
+    if (ihdr[1] != convert(Int32, 1653996111)) && (ihdr[2] != convert(Int32, 2))
+        error("Wrong file format [header]")
+    end
+
+    run = BDIO.BDIO_read_str(fb)
+
+    while BDIO_get_uinfo(fb) != 1
+        BDIO_seek!(fb)
+    end
+
+    ifoo = Vector{Int32}(undef, 4)
+    BDIO_read(fb, ifoo)
+    ndim = convert(Int64, ifoo[1])
+    npls = convert(Int64, round(ndim*(ndim-1)/2))
+    ibc  = convert(Int64, ifoo[2])
+    nf   = ifoo[4]
+    
+    ifoo = Vector{Int32}(undef, ndim+convert(Int32, npls))
+    BDIO_read(fb, ifoo)
+    iL  = ntuple(i -> convert(Int64, ifoo[i]),ndim)
+    ntw = ntuple(i -> convert(Int64, ifoo[i+ndim]), npls)
+
+    dfoo = Vector{Float64}(undef, 4)
+    BDIO_read(fb, dfoo)
+
+    lp = SpaceParm{ndim}(iL, (4,4,4,4), ibc, ntw)
+    gp = GaugeParm{Float64}(SU3{Float64}, dfoo[1], dfoo[2])
+    
+    dtr = (2,3,4,1)
+    assign(id, V, i3) = SU3{Float64}(V[1,dtr[id],i3],V[2,dtr[id],i3],V[3,dtr[id],i3],
+                                     V[4,dtr[id],i3],V[5,dtr[id],i3],V[6,dtr[id],i3])
+
+    while BDIO_get_uinfo(fb) != 8
+        BDIO_seek!(fb)
+    end
+    Ucpu = Array{SU3{Float64}, 3}(undef, lp.bsz, lp.ndim, lp.rsz)
+    V = Array{ComplexF64, 3}(undef, 9, lp.ndim, lp.iL[3])
+    for i4 in 1:lp.iL[4]
+        for i1 in 1:lp.iL[1]
+            for i2 in 1:lp.iL[2]
+                BDIO_read(fb, vec(V))
+                for i3 in 1:lp.iL[3]
+                    b, r = point_index(CartesianIndex(i1,i2,i3,i4), lp)
+                    for id in 1:lp.ndim
+                        Ucpu[b,id,r] = assign(id, V, i3)
+                    end
+                end
+            end
+        end
+    end
+
+    if ibc == BC_SF_AFWB || ibc == BC_SF_ORBI
+        BDIO_read(fb, V)
+        Ubnd = ntuple(i->assign(i, V, 1), 3)
+        BDIO_close!(fb)
+
+        return CuArray(Ucpu), Ubnd
+    else
+        BDIO_close!(fb)
+        return CuArray(Ucpu)
+    end
+end
+
+
+"""
+    save_cnfg(fname, U, lp::SpaceParm, gp::GaugeParm; run::Union{Nothing,String}=nothing)
+
+Saves configuration `U` in the file `fname` using the native (BDIO) format.
+"""
+function save_cnfg(fname::String, U, lp::SpaceParm{4,M,B,D}, gp::GaugeParm; run::Union{Nothing,String}=nothing) where {M,B,D}
+
+    ihdr = [convert(Int32, 1653996111),convert(Int32,2)]
+    UID_HDR = 14
+
+    if isfile(fname)
+        fb = BDIO_open(fname, "a")
+    else
+        fb = BDIO_open(fname, "w", "Configuration of LatticeGPU.jl")
+        BDIO_start_record!(fb, BDIO_BIN_GENERIC, UID_HDR)
+        BDIO_write!(fb, ihdr)
+        if run != nothing
+            BDIO_write!(fb, run*"\0")
+        end
+        BDIO_write_hash!(fb)
+        
+        dfoo = Vector{Float64}(undef, 16)
+        BDIO_start_record!(fb, BDIO_BIN_GENERIC, 1)
+        BDIO_write!(fb, [convert(Int32, 4)])
+        BDIO_write!(fb, [convert(Int32, B)])
+        BDIO_write!(fb, [convert(Int32, gp.ng)])
+        BDIO_write!(fb, [convert(Int32, 0)])
+        BDIO_write!(fb, [convert(Int32, lp.iL[i]) for i in 1:4])
+        BDIO_write!(fb, [convert(Int32, lp.ntw[i]) for i in 1:M])
+        BDIO_write!(fb, [gp.beta, gp.c0, gp.cG[1], gp.cG[2]])
+    end
+    BDIO_write_hash!(fb)
+    
+    dtr = (2,3,4,1)
+
+    function assign!(id, V, i3, M::M3x3{T}) where T
+
+        V[1,dtr[id],i3] = M.u11
+        V[2,dtr[id],i3] = M.u12
+        V[3,dtr[id],i3] = M.u13
+        V[4,dtr[id],i3] = M.u21
+        V[5,dtr[id],i3] = M.u22
+        V[6,dtr[id],i3] = M.u23
+        V[7,dtr[id],i3] = M.u31
+        V[8,dtr[id],i3] = M.u32
+        V[9,dtr[id],i3] = M.u33
+        return nothing
+    end
+    assign!(id, V, i3, g::SU3{T}) where T = assign!(id,V,i3,convert(M3x3{T}, g))
+
+    BDIO_start_record!(fb, BDIO_BIN_F64LE, 8, true)
+    Ucpu = Array(U)
+    V = Array{ComplexF64, 3}(undef, 9, lp.ndim, lp.iL[3])
+    for i4 in 1:lp.iL[4]
+        for i1 in 1:lp.iL[1]
+            for i2 in 1:lp.iL[2]
+                for i3 in 1:lp.iL[3]
+                    b, r = point_index(CartesianIndex(i1,i2,i3,i4), lp)
+                    for id in 1:lp.ndim
+                        assign!(id, V, i3, Ucpu[b,id,r])
+                    end
+                end
+                BDIO_write!(fb, V)
+            end
+        end
+    end
+    
+    if B == BC_SF_AFWB || B == BC_SF_ORBI
+        for i3 in 1:lp.iL[3]
+            for id in 1:lp.ndim-1
+                assign!(id, V, i3, Ubnd[id])
+            end
+            assign!(4, V, i3, zero(M3x3{Float64}))
+        end
+        for i1 in 1:lp.iL[1]
+            for i2 in 1:lp.iL[2]
+                BDIO_write!(fb, V)
+            end
+        end
+    end        
+    BDIO_write_hash!(fb)
+    BDIO_close!(fb)
+    
+    return nothing
+end
+
+
+"""
+    function import_bsfqcd(fname::String, lp::SpaceParm)
+
+import a double precision configuration in bsfqcd format. SF boundary conditions are assummed. 
 """
 function import_bsfqcd(fname, lp::SpaceParm)