Two GMT.jl threads conflict?

[liming-he]

I have one command line with GMT.jl running a program. Trying to run the same code but for different part of data in another command line. I then found that the GMT.jl in the first command-line quitted with error. The GMT.jl won't work in the 2nd command line either. Question: could two GMT.jl work in the same machine?

Many thanks.
LH
=========error message from the 1st command line =====
Error: /undefined in e3
Operand stack:

Execution stack:
%interp_exit .runexec2 --nostringval-- --nostringval-- --nostringval-- 2 %stopped_push --nostringval-- --nostringval-- --nostringval-- false 1 %stopped_push 1974 1 3 %oparray_pop 1973 1 3 %oparray_pop 1961 1 3 %oparray_pop 1817 1 3 %oparray_pop --nostringval-- %errorexec_pop .runexec2 --nostringval-- --nostringval-- --nostringval-- 2 %stopped_push --nostringval--
Dictionary stack:
--dict:767/1123(ro)(G)-- --dict:0/20(G)-- --dict:75/200(L)-- --dict:159/250(L)--
Current allocation mode is local
Last OS error: No such file or directory
Current file position is 461267
psconvert [ERROR]: System call ['/home/liming/.julia/artifacts/4883a6685d86b068da934537a444a6d170d71730/bin/gs' -q -dNOSAFER -dNOPAUSE -dBATCH -sDEVICE=bbox -DPSL_no_pagefill -dMaxBitmap=2147483647 -dUseFastColor=true '/tmp/GMTjl_liming.ps' 2> './psconvert_2099957c.bb'] returned error 256.
ERROR: Something went wrong when calling the module. GMT error number = 79
Stacktrace:
[1] error(s::String)
@ Base ./error.jl:35
[2] gmt(::String)
@ GMT ~/.julia/packages/GMT/Mxc9g/src/gmt_main.jl:161
[3] showfig(d::Dict{Symbol, Any}, fname_ps::String, fname_ext::String, opt_T::String, K::Bool, fname::String)
@ GMT ~/.julia/packages/GMT/Mxc9g/src/common_options.jl:3929
[4] finish_PS_module(::Dict{Symbol, Any}, ::Vector{String}, ::String, ::Bool, ::Bool, ::Bool, ::GMTgrid{Float32, 2}, ::Vararg{Any})
@ GMT ~/.julia/packages/GMT/Mxc9g/src/common_options.jl:4214
[5] grdimage(cmd0::String, arg1::GMTgrid{Float32, 2}, arg2::Nothing, arg3::Nothing; first::Bool, kwargs::Base.Pairs{Symbol, Any, NTuple{9, Symbol}, NamedTuple{(:show, :interp, :frame, :coast, :colorbar, :par, :fmt, :savefig, :dpi), Tuple{Bool, String, NamedTuple{(:axes, :annot), Tuple{NTuple{4, Symbol}, Bool}}, NamedTuple{(:shore, :ocean, :coast, :frame, :show), Tuple{NamedTuple{(:level, :pen), Tuple{Int64, Tuple{Float64, Symbol}}}, Symbol, Bool, NamedTuple{(:axes, :grid, :annot, :ticks), Tuple{String, Int64, Int64, Int64}}, Bool}}, NamedTuple{(:pos, :color, :show, :frame), Tuple{NamedTuple{(:anchor, :length, :horizontal, :offset), Tuple{Symbol, Tuple{Float64, Float64}, Bool, Tuple{Int64, Float64}}}, GMT.GMTcpt, Bool, NamedTuple{(:ylabel, :ticks, :annot), Tuple{Symbol, Symbol, Symbol}}}}, NamedTuple{(:MAP_ANNOT_ORTHO, :MAP_TITLE_OFFSET), Tuple{Symbol, Float64}}, Symbol, String, Int64}}})
@ GMT ~/.julia/packages/GMT/Mxc9g/src/grdimage.jl:123
[6] grdimage
@ ~/.julia/packages/GMT/Mxc9g/src/grdimage.jl:53 [inlined]
[7] #grdimage#348
@ ~/.julia/packages/GMT/Mxc9g/src/grdimage.jl:218 [inlined]
[8] grdimage
@ ~/.julia/packages/GMT/Mxc9g/src/grdimage.jl:218 [inlined]
[9] plot_a_layer(x::GMTgrid{Float32, 2}, file_out::String, x_min::Int64, x_max::Int64, x_step::Int64, y_label::String)
@ Main ./REPL[3]:14
[10] process_layer_batch(x::GMTgrid{Float32, 2}, m::GMTgrid{Float32, 2}, data_path1::String, fig_path::String, this_variable::String, Pixel_type::String, x_min::Int64, x_max::Int64, x_step::Int64, y_label::String, year_list::Vector{DateTime}, freq::String)
@ Main ./REPL[4]:41
[11] top-level scope
@ ./REPL[58]:12

=========error message from the 2nd command line ===========
gmtset [ERROR]: Could not create file gmt.conf
ERROR 1: Point outside of projection domain
sh: 1: cannot create ./psconvert_2123775c.bb: Permission denied
psconvert [ERROR]: System call ['/home/liming/.julia/artifacts/4883a6685d86b068da934537a444a6d170d71730/bin/gs' -q -dNOSAFER -dNOPAUSE -dBATCH -sDEVICE=bbox -DPSL_no_pagefill -dMaxBitmap=2147483647 -dUseFastColor=true '/tmp/GMTjl_liming.ps' 2> './psconvert_2123775c.bb'] returned error 512.
ERROR: Something went wrong when calling the module. GMT error number = 79
Stacktrace:
[1] error(s::String)
@ Base ./error.jl:35
[2] gmt(::String)
@ GMT ~/.julia/packages/GMT/Mxc9g/src/gmt_main.jl:161
[3] showfig(d::Dict{Symbol, Any}, fname_ps::String, fname_ext::String, opt_T::String, K::Bool, fname::String)
@ GMT ~/.julia/packages/GMT/Mxc9g/src/common_options.jl:3929
[4] finish_PS_module(::Dict{Symbol, Any}, ::Vector{String}, ::String, ::Bool, ::Bool, ::Bool, ::GMTgrid{Float32, 2}, ::Vararg{Any})
@ GMT ~/.julia/packages/GMT/Mxc9g/src/common_options.jl:4214
[5] grdimage(cmd0::String, arg1::GMTgrid{Float32, 2}, arg2::Nothing, arg3::Nothing; first::Bool, kwargs::Base.Pairs{Symbol, Any, NTuple{9, Symbol}, NamedTuple{(:show, :interp, :frame, :coast, :colorbar, :par, :fmt, :savefig, :dpi), Tuple{Bool, String, NamedTuple{(:axes, :annot), Tuple{NTuple{4, Symbol}, Bool}}, NamedTuple{(:shore, :ocean, :coast, :frame, :show), Tuple{NamedTuple{(:level, :pen), Tuple{Int64, Tuple{Float64, Symbol}}}, Symbol, Bool, NamedTuple{(:axes, :grid, :annot, :ticks), Tuple{String, Int64, Int64, Int64}}, Bool}}, NamedTuple{(:pos, :color, :show, :frame), Tuple{NamedTuple{(:anchor, :length, :horizontal, :offset), Tuple{Symbol, Tuple{Float64, Float64}, Bool, Tuple{Int64, Float64}}}, GMT.GMTcpt, Bool, NamedTuple{(:ylabel, :ticks, :annot), Tuple{Symbol, Symbol, Symbol}}}}, NamedTuple{(:MAP_ANNOT_ORTHO, :MAP_TITLE_OFFSET), Tuple{Symbol, Float64}}, Symbol, String, Int64}}})
@ GMT ~/.julia/packages/GMT/Mxc9g/src/grdimage.jl:123
[6] grdimage
@ ~/.julia/packages/GMT/Mxc9g/src/grdimage.jl:53 [inlined]
[7] #grdimage#348
@ ~/.julia/packages/GMT/Mxc9g/src/grdimage.jl:218 [inlined]
[8] grdimage
@ ~/.julia/packages/GMT/Mxc9g/src/grdimage.jl:218 [inlined]
[9] plot_a_layer(x::GMTgrid{Float32, 2}, file_out::String, x_min::Int64, x_max::Int64, x_step::Int64, y_label::String)
@ Main ./REPL[3]:14
[10] process_layer_batch(x::GMTgrid{Float32, 2}, m::GMTgrid{Float32, 2}, data_path1::String, fig_path::String, this_variable::String, Pixel_type::String, x_min::Int64, x_max::Int64, x_step::Int64, y_label::String, year_list::Vector{DateTime}, freq::String)
@ Main ./REPL[4]:41
[11] top-level scope
@ ./REPL[53]:12

[joa-quim]

So if I got it right you want to run parallel jobs.
I'm afraid that is currently not possible if those jobs imply creating figures. The problem is that all figures are created in the tmp directory using the same name, so a second plotting command will actually corrupt the fist one and that is what you got with all those errors from Ghostscript.

Allowing this should be possible in principle but it needs a solution to create unique file names for each Julia session. I'll think more about this.

[liming-he]

Thanks for the clarification.

[joa-quim]

You could try this hack to see if works. The default PS file name is the one that you get with GMT.PSname[1]. The hack would be to manually set it to a different name right after the using GMT command. For example (with my values):

julia> GMT.PSname[1]
"c:\\TMP/GMTjl_j.ps"

# On the second session do
GMT.PSname[1] = "c:\\TMP/GMTjl_j2.ps"

Now the two names should not conflict (but there are some other tmp names used by some modules that would do, though their use is much less frequent).

[joa-quim]

Actually you can test it even a bit further. I committed a change in the master version where if the environment variable JULIA_GMT_MULTIFILE is set (doesn't matter what it contains, just that it is set) then you should be able to do what you asked. It would be nice if you could test it.

[liming-he]

I tested the first method (changing GMT.PSname[1]), and it worked great.
I will try the 2nd method later - just do not want to break my system that just works.